37 files changed, 2780 insertions, 737 deletions

diff --git a/src/core/hle/kernel/board/nintendo/nx/k_system_control.h b/src/core/hle/kernel/board/nintendo/nx/k_system_control.h
index fe375769e..4b717d091 100644
--- a/src/core/hle/kernel/board/nintendo/nx/k_system_control.h
+++ b/src/core/hle/kernel/board/nintendo/nx/k_system_control.h
@@ -9,6 +9,10 @@ namespace Kernel::Board::Nintendo::Nx {
 
 class KSystemControl {
 public:
+    // This can be overridden as needed.
+    static constexpr size_t SecureAppletMemorySize = 4 * 1024 * 1024; // 4_MB
+
+public:
     class Init {
     public:
         // Initialization.
diff --git a/src/core/hle/kernel/init/init_slab_setup.cpp b/src/core/hle/kernel/init/init_slab_setup.cpp
index 477e4e407..aa2dddcc6 100644
--- a/src/core/hle/kernel/init/init_slab_setup.cpp
+++ b/src/core/hle/kernel/init/init_slab_setup.cpp
@@ -10,7 +10,9 @@
 #include "core/hardware_properties.h"
 #include "core/hle/kernel/init/init_slab_setup.h"
 #include "core/hle/kernel/k_code_memory.h"
+#include "core/hle/kernel/k_debug.h"
 #include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_event_info.h"
 #include "core/hle/kernel/k_memory_layout.h"
 #include "core/hle/kernel/k_memory_manager.h"
 #include "core/hle/kernel/k_page_buffer.h"
@@ -22,6 +24,7 @@
 #include "core/hle/kernel/k_shared_memory.h"
 #include "core/hle/kernel/k_shared_memory_info.h"
 #include "core/hle/kernel/k_system_control.h"
+#include "core/hle/kernel/k_system_resource.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/k_thread_local_page.h"
 #include "core/hle/kernel/k_transfer_memory.h"
@@ -44,7 +47,10 @@ namespace Kernel::Init {
     HANDLER(KThreadLocalPage,                                                                      \
             (SLAB_COUNT(KProcess) + (SLAB_COUNT(KProcess) + SLAB_COUNT(KThread)) / 8),             \
             ##__VA_ARGS__)                                                                         \
-    HANDLER(KResourceLimit, (SLAB_COUNT(KResourceLimit)), ##__VA_ARGS__)
+    HANDLER(KResourceLimit, (SLAB_COUNT(KResourceLimit)), ##__VA_ARGS__)                           \
+    HANDLER(KEventInfo, (SLAB_COUNT(KThread) + SLAB_COUNT(KDebug)), ##__VA_ARGS__)                 \
+    HANDLER(KDebug, (SLAB_COUNT(KDebug)), ##__VA_ARGS__)                                           \
+    HANDLER(KSecureSystemResource, (SLAB_COUNT(KProcess)), ##__VA_ARGS__)
 
 namespace {
 
@@ -73,8 +79,20 @@ constexpr size_t SlabCountKResourceLimit = 5;
 constexpr size_t SlabCountKDebug = Core::Hardware::NUM_CPU_CORES;
 constexpr size_t SlabCountKIoPool = 1;
 constexpr size_t SlabCountKIoRegion = 6;
+constexpr size_t SlabcountKSessionRequestMappings = 40;
 
-constexpr size_t SlabCountExtraKThread = 160;
+constexpr size_t SlabCountExtraKThread = (1024 + 256 + 256) - SlabCountKThread;
+
+namespace test {
+
+static_assert(KernelPageBufferHeapSize ==
+              2 * PageSize + (SlabCountKProcess + SlabCountKThread +
+                              (SlabCountKProcess + SlabCountKThread) / 8) *
+                                 PageSize);
+static_assert(KernelPageBufferAdditionalSize ==
+              (SlabCountExtraKThread + (SlabCountExtraKThread / 8)) * PageSize);
+
+} // namespace test
 
 /// Helper function to translate from the slab virtual address to the reserved location in physical
 /// memory.
@@ -109,7 +127,7 @@ VAddr InitializeSlabHeap(Core::System& system, KMemoryLayout& memory_layout, VAd
 }
 
 size_t CalculateSlabHeapGapSize() {
-    constexpr size_t KernelSlabHeapGapSize = 2_MiB - 296_KiB;
+    constexpr size_t KernelSlabHeapGapSize = 2_MiB - 320_KiB;
     static_assert(KernelSlabHeapGapSize <= KernelSlabHeapGapsSizeMax);
     return KernelSlabHeapGapSize;
 }
@@ -134,6 +152,7 @@ KSlabResourceCounts KSlabResourceCounts::CreateDefault() {
         .num_KDebug = SlabCountKDebug,
         .num_KIoPool = SlabCountKIoPool,
         .num_KIoRegion = SlabCountKIoRegion,
+        .num_KSessionRequestMappings = SlabcountKSessionRequestMappings,
     };
 }
 
@@ -164,29 +183,6 @@ size_t CalculateTotalSlabHeapSize(const KernelCore& kernel) {
     return size;
 }
 
-void InitializeKPageBufferSlabHeap(Core::System& system) {
-    auto& kernel = system.Kernel();
-
-    const auto& counts = kernel.SlabResourceCounts();
-    const size_t num_pages =
-        counts.num_KProcess + counts.num_KThread + (counts.num_KProcess + counts.num_KThread) / 8;
-    const size_t slab_size = num_pages * PageSize;
-
-    // Reserve memory from the system resource limit.
-    ASSERT(kernel.GetSystemResourceLimit()->Reserve(LimitableResource::PhysicalMemory, slab_size));
-
-    // Allocate memory for the slab.
-    constexpr auto AllocateOption = KMemoryManager::EncodeOption(
-        KMemoryManager::Pool::System, KMemoryManager::Direction::FromFront);
-    const PAddr slab_address =
-        kernel.MemoryManager().AllocateAndOpenContinuous(num_pages, 1, AllocateOption);
-    ASSERT(slab_address != 0);
-
-    // Initialize the slabheap.
-    KPageBuffer::InitializeSlabHeap(kernel, system.DeviceMemory().GetPointer<void>(slab_address),
-                                    slab_size);
-}
-
 void InitializeSlabHeaps(Core::System& system, KMemoryLayout& memory_layout) {
     auto& kernel = system.Kernel();
 
@@ -258,3 +254,29 @@ void InitializeSlabHeaps(Core::System& system, KMemoryLayout& memory_layout) {
 }
 
 } // namespace Kernel::Init
+
+namespace Kernel {
+
+void KPageBufferSlabHeap::Initialize(Core::System& system) {
+    auto& kernel = system.Kernel();
+    const auto& counts = kernel.SlabResourceCounts();
+    const size_t num_pages =
+        counts.num_KProcess + counts.num_KThread + (counts.num_KProcess + counts.num_KThread) / 8;
+    const size_t slab_size = num_pages * PageSize;
+
+    // Reserve memory from the system resource limit.
+    ASSERT(kernel.GetSystemResourceLimit()->Reserve(LimitableResource::PhysicalMemory, slab_size));
+
+    // Allocate memory for the slab.
+    constexpr auto AllocateOption = KMemoryManager::EncodeOption(
+        KMemoryManager::Pool::System, KMemoryManager::Direction::FromFront);
+    const PAddr slab_address =
+        kernel.MemoryManager().AllocateAndOpenContinuous(num_pages, 1, AllocateOption);
+    ASSERT(slab_address != 0);
+
+    // Initialize the slabheap.
+    KPageBuffer::InitializeSlabHeap(kernel, system.DeviceMemory().GetPointer<void>(slab_address),
+                                    slab_size);
+}
+
+} // namespace Kernel
diff --git a/src/core/hle/kernel/init/init_slab_setup.h b/src/core/hle/kernel/init/init_slab_setup.h
index 13be63c87..5e22821bc 100644
--- a/src/core/hle/kernel/init/init_slab_setup.h
+++ b/src/core/hle/kernel/init/init_slab_setup.h
@@ -33,11 +33,11 @@ struct KSlabResourceCounts {
     size_t num_KDebug;
     size_t num_KIoPool;
     size_t num_KIoRegion;
+    size_t num_KSessionRequestMappings;
 };
 
 void InitializeSlabResourceCounts(KernelCore& kernel);
 size_t CalculateTotalSlabHeapSize(const KernelCore& kernel);
-void InitializeKPageBufferSlabHeap(Core::System& system);
 void InitializeSlabHeaps(Core::System& system, KMemoryLayout& memory_layout);
 
 } // namespace Kernel::Init
diff --git a/src/core/hle/kernel/k_class_token.cpp b/src/core/hle/kernel/k_class_token.cpp
index 10265c23c..a850db3c4 100644
--- a/src/core/hle/kernel/k_class_token.cpp
+++ b/src/core/hle/kernel/k_class_token.cpp
@@ -16,6 +16,7 @@
 #include "core/hle/kernel/k_session.h"
 #include "core/hle/kernel/k_shared_memory.h"
 #include "core/hle/kernel/k_synchronization_object.h"
+#include "core/hle/kernel/k_system_resource.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/k_transfer_memory.h"
 
@@ -119,4 +120,6 @@ static_assert(std::is_final_v<KTransferMemory> && std::is_base_of_v<KAutoObject,
 // static_assert(std::is_final_v<KCodeMemory> &&
 //              std::is_base_of_v<KAutoObject, KCodeMemory>);
 
+static_assert(std::is_base_of_v<KAutoObject, KSystemResource>);
+
 } // namespace Kernel
diff --git a/src/core/hle/kernel/k_class_token.h b/src/core/hle/kernel/k_class_token.h
index ab20e00ff..e75b1c035 100644
--- a/src/core/hle/kernel/k_class_token.h
+++ b/src/core/hle/kernel/k_class_token.h
@@ -10,6 +10,8 @@ namespace Kernel {
 
 class KAutoObject;
 
+class KSystemResource;
+
 class KClassTokenGenerator {
 public:
     using TokenBaseType = u16;
@@ -58,7 +60,7 @@ private:
         if constexpr (std::is_same<T, KAutoObject>::value) {
             static_assert(T::ObjectType == ObjectType::KAutoObject);
             return 0;
-        } else if constexpr (!std::is_final<T>::value) {
+        } else if constexpr (!std::is_final<T>::value && !std::same_as<T, KSystemResource>) {
             static_assert(ObjectType::BaseClassesStart <= T::ObjectType &&
                           T::ObjectType < ObjectType::BaseClassesEnd);
             constexpr auto ClassIndex = static_cast<TokenBaseType>(T::ObjectType) -
@@ -108,6 +110,8 @@ public:
         KSessionRequest,
         KCodeMemory,
 
+        KSystemResource,
+
         // NOTE: True order for these has not been determined yet.
         KAlpha,
         KBeta,
diff --git a/src/core/hle/kernel/k_debug.h b/src/core/hle/kernel/k_debug.h
new file mode 100644
index 000000000..e3a0689c8
--- /dev/null
+++ b/src/core/hle/kernel/k_debug.h
@@ -0,0 +1,20 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "core/hle/kernel/k_auto_object.h"
+#include "core/hle/kernel/slab_helpers.h"
+
+namespace Kernel {
+
+class KDebug final : public KAutoObjectWithSlabHeapAndContainer<KDebug, KAutoObjectWithList> {
+    KERNEL_AUTOOBJECT_TRAITS(KDebug, KAutoObject);
+
+public:
+    explicit KDebug(KernelCore& kernel_) : KAutoObjectWithSlabHeapAndContainer{kernel_} {}
+
+    static void PostDestroy([[maybe_unused]] uintptr_t arg) {}
+};
+
+} // namespace Kernel
diff --git a/src/core/hle/kernel/k_dynamic_page_manager.h b/src/core/hle/kernel/k_dynamic_page_manager.h
index 9076c8fa3..ac80d60a1 100644
--- a/src/core/hle/kernel/k_dynamic_page_manager.h
+++ b/src/core/hle/kernel/k_dynamic_page_manager.h
@@ -3,6 +3,8 @@
 
 #pragma once
 
+#include <vector>
+
 #include "common/alignment.h"
 #include "common/common_types.h"
 #include "core/hle/kernel/k_page_bitmap.h"
@@ -33,28 +35,36 @@ public:
         return reinterpret_cast<T*>(m_backing_memory.data() + (addr - m_address));
     }
 
-    Result Initialize(VAddr addr, size_t sz) {
+    Result Initialize(VAddr memory, size_t size, size_t align) {
         // We need to have positive size.
-        R_UNLESS(sz > 0, ResultOutOfMemory);
-        m_backing_memory.resize(sz);
+        R_UNLESS(size > 0, ResultOutOfMemory);
+        m_backing_memory.resize(size);
+
+        // Set addresses.
+        m_address = memory;
+        m_aligned_address = Common::AlignDown(memory, align);
 
-        // Calculate management overhead.
-        const size_t management_size =
-            KPageBitmap::CalculateManagementOverheadSize(sz / sizeof(PageBuffer));
-        const size_t allocatable_size = sz - management_size;
+        // Calculate extents.
+        const size_t managed_size = m_address + size - m_aligned_address;
+        const size_t overhead_size = Common::AlignUp(
+            KPageBitmap::CalculateManagementOverheadSize(managed_size / sizeof(PageBuffer)),
+            sizeof(PageBuffer));
+        R_UNLESS(overhead_size < size, ResultOutOfMemory);
 
         // Set tracking fields.
-        m_address = addr;
-        m_size = Common::AlignDown(allocatable_size, sizeof(PageBuffer));
-        m_count = allocatable_size / sizeof(PageBuffer);
-        R_UNLESS(m_count > 0, ResultOutOfMemory);
+        m_size = Common::AlignDown(size - overhead_size, sizeof(PageBuffer));
+        m_count = m_size / sizeof(PageBuffer);
 
         // Clear the management region.
-        u64* management_ptr = GetPointer<u64>(m_address + allocatable_size);
-        std::memset(management_ptr, 0, management_size);
+        u64* management_ptr = GetPointer<u64>(m_address + size - overhead_size);
+        std::memset(management_ptr, 0, overhead_size);
 
         // Initialize the bitmap.
-        m_page_bitmap.Initialize(management_ptr, m_count);
+        const size_t allocatable_region_size =
+            (m_address + size - overhead_size) - m_aligned_address;
+        ASSERT(allocatable_region_size >= sizeof(PageBuffer));
+
+        m_page_bitmap.Initialize(management_ptr, allocatable_region_size / sizeof(PageBuffer));
 
         // Free the pages to the bitmap.
         for (size_t i = 0; i < m_count; i++) {
@@ -62,7 +72,8 @@ public:
             std::memset(GetPointer<PageBuffer>(m_address) + i, 0, PageSize);
 
             // Set the bit for the free page.
-            m_page_bitmap.SetBit(i);
+            m_page_bitmap.SetBit((m_address + (i * sizeof(PageBuffer)) - m_aligned_address) /
+                                 sizeof(PageBuffer));
         }
 
         R_SUCCEED();
@@ -101,7 +112,28 @@ public:
         m_page_bitmap.ClearBit(offset);
         m_peak = std::max(m_peak, (++m_used));
 
-        return GetPointer<PageBuffer>(m_address) + offset;
+        return GetPointer<PageBuffer>(m_aligned_address) + offset;
+    }
+
+    PageBuffer* Allocate(size_t count) {
+        // Take the lock.
+        // TODO(bunnei): We should disable interrupts here via KScopedInterruptDisable.
+        KScopedSpinLock lk(m_lock);
+
+        // Find a random free block.
+        s64 soffset = m_page_bitmap.FindFreeRange(count);
+        if (soffset < 0) [[likely]] {
+            return nullptr;
+        }
+
+        const size_t offset = static_cast<size_t>(soffset);
+
+        // Update our tracking.
+        m_page_bitmap.ClearRange(offset, count);
+        m_used += count;
+        m_peak = std::max(m_peak, m_used);
+
+        return GetPointer<PageBuffer>(m_aligned_address) + offset;
     }
 
     void Free(PageBuffer* pb) {
@@ -113,7 +145,7 @@ public:
         KScopedSpinLock lk(m_lock);
 
         // Set the bit for the free page.
-        size_t offset = (reinterpret_cast<uintptr_t>(pb) - m_address) / sizeof(PageBuffer);
+        size_t offset = (reinterpret_cast<uintptr_t>(pb) - m_aligned_address) / sizeof(PageBuffer);
         m_page_bitmap.SetBit(offset);
 
         // Decrement our used count.
@@ -127,6 +159,7 @@ private:
     size_t m_peak{};
     size_t m_count{};
     VAddr m_address{};
+    VAddr m_aligned_address{};
     size_t m_size{};
 
     // TODO(bunnei): Back by host memory until we emulate kernel virtual address space.
diff --git a/src/core/hle/kernel/k_dynamic_resource_manager.h b/src/core/hle/kernel/k_dynamic_resource_manager.h
index 1ce517e8e..b6a27d648 100644
--- a/src/core/hle/kernel/k_dynamic_resource_manager.h
+++ b/src/core/hle/kernel/k_dynamic_resource_manager.h
@@ -6,6 +6,7 @@
 #include "common/common_funcs.h"
 #include "core/hle/kernel/k_dynamic_slab_heap.h"
 #include "core/hle/kernel/k_memory_block.h"
+#include "core/hle/kernel/k_page_group.h"
 
 namespace Kernel {
 
@@ -51,8 +52,10 @@ private:
     DynamicSlabType* m_slab_heap{};
 };
 
+class KBlockInfoManager : public KDynamicResourceManager<KBlockInfo> {};
 class KMemoryBlockSlabManager : public KDynamicResourceManager<KMemoryBlock> {};
 
+using KBlockInfoSlabHeap = typename KBlockInfoManager::DynamicSlabType;
 using KMemoryBlockSlabHeap = typename KMemoryBlockSlabManager::DynamicSlabType;
 
 } // namespace Kernel
diff --git a/src/core/hle/kernel/k_event_info.h b/src/core/hle/kernel/k_event_info.h
new file mode 100644
index 000000000..25b3ff594
--- /dev/null
+++ b/src/core/hle/kernel/k_event_info.h
@@ -0,0 +1,64 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+
+#include <boost/intrusive/list.hpp>
+
+#include "core/hle/kernel/slab_helpers.h"
+#include "core/hle/kernel/svc_types.h"
+
+namespace Kernel {
+
+class KEventInfo : public KSlabAllocated<KEventInfo>, public boost::intrusive::list_base_hook<> {
+public:
+    struct InfoCreateThread {
+        u32 thread_id{};
+        uintptr_t tls_address{};
+    };
+
+    struct InfoExitProcess {
+        Svc::ProcessExitReason reason{};
+    };
+
+    struct InfoExitThread {
+        Svc::ThreadExitReason reason{};
+    };
+
+    struct InfoException {
+        Svc::DebugException exception_type{};
+        s32 exception_data_count{};
+        uintptr_t exception_address{};
+        std::array<uintptr_t, 4> exception_data{};
+    };
+
+    struct InfoSystemCall {
+        s64 tick{};
+        s32 id{};
+    };
+
+public:
+    KEventInfo() = default;
+    ~KEventInfo() = default;
+
+public:
+    Svc::DebugEvent event{};
+    u32 thread_id{};
+    u32 flags{};
+    bool is_attached{};
+    bool continue_flag{};
+    bool ignore_continue{};
+    bool close_once{};
+    union {
+        InfoCreateThread create_thread;
+        InfoExitProcess exit_process;
+        InfoExitThread exit_thread;
+        InfoException exception;
+        InfoSystemCall system_call;
+    } info{};
+    KThread* debug_thread{};
+};
+
+} // namespace Kernel
diff --git a/src/core/hle/kernel/k_handle_table.cpp b/src/core/hle/kernel/k_handle_table.cpp
index e830ca46e..1c7a766c8 100644
--- a/src/core/hle/kernel/k_handle_table.cpp
+++ b/src/core/hle/kernel/k_handle_table.cpp
@@ -5,14 +5,11 @@
 
 namespace Kernel {
 
-KHandleTable::KHandleTable(KernelCore& kernel_) : kernel{kernel_} {}
-KHandleTable::~KHandleTable() = default;
-
 Result KHandleTable::Finalize() {
     // Get the table and clear our record of it.
     u16 saved_table_size = 0;
     {
-        KScopedDisableDispatch dd(kernel);
+        KScopedDisableDispatch dd{m_kernel};
         KScopedSpinLock lk(m_lock);
 
         std::swap(m_table_size, saved_table_size);
@@ -25,28 +22,28 @@ Result KHandleTable::Finalize() {
         }
     }
 
-    return ResultSuccess;
+    R_SUCCEED();
 }
 
 bool KHandleTable::Remove(Handle handle) {
     // Don't allow removal of a pseudo-handle.
-    if (Svc::IsPseudoHandle(handle)) {
+    if (Svc::IsPseudoHandle(handle)) [[unlikely]] {
         return false;
     }
 
     // Handles must not have reserved bits set.
     const auto handle_pack = HandlePack(handle);
-    if (handle_pack.reserved != 0) {
+    if (handle_pack.reserved != 0) [[unlikely]] {
         return false;
     }
 
     // Find the object and free the entry.
     KAutoObject* obj = nullptr;
     {
-        KScopedDisableDispatch dd(kernel);
+        KScopedDisableDispatch dd{m_kernel};
         KScopedSpinLock lk(m_lock);
 
-        if (this->IsValidHandle(handle)) {
+        if (this->IsValidHandle(handle)) [[likely]] {
             const auto index = handle_pack.index;
 
             obj = m_objects[index];
@@ -57,13 +54,13 @@ bool KHandleTable::Remove(Handle handle) {
     }
 
     // Close the object.
-    kernel.UnregisterInUseObject(obj);
+    m_kernel.UnregisterInUseObject(obj);
     obj->Close();
     return true;
 }
 
 Result KHandleTable::Add(Handle* out_handle, KAutoObject* obj) {
-    KScopedDisableDispatch dd(kernel);
+    KScopedDisableDispatch dd{m_kernel};
     KScopedSpinLock lk(m_lock);
 
     // Never exceed our capacity.
@@ -82,22 +79,22 @@ Result KHandleTable::Add(Handle* out_handle, KAutoObject* obj) {
         *out_handle = EncodeHandle(static_cast<u16>(index), linear_id);
     }
 
-    return ResultSuccess;
+    R_SUCCEED();
 }
 
 Result KHandleTable::Reserve(Handle* out_handle) {
-    KScopedDisableDispatch dd(kernel);
+    KScopedDisableDispatch dd{m_kernel};
     KScopedSpinLock lk(m_lock);
 
     // Never exceed our capacity.
     R_UNLESS(m_count < m_table_size, ResultOutOfHandles);
 
     *out_handle = EncodeHandle(static_cast<u16>(this->AllocateEntry()), this->AllocateLinearId());
-    return ResultSuccess;
+    R_SUCCEED();
 }
 
 void KHandleTable::Unreserve(Handle handle) {
-    KScopedDisableDispatch dd(kernel);
+    KScopedDisableDispatch dd{m_kernel};
     KScopedSpinLock lk(m_lock);
 
     // Unpack the handle.
@@ -108,7 +105,7 @@ void KHandleTable::Unreserve(Handle handle) {
     ASSERT(reserved == 0);
     ASSERT(linear_id != 0);
 
-    if (index < m_table_size) {
+    if (index < m_table_size) [[likely]] {
         // NOTE: This code does not check the linear id.
         ASSERT(m_objects[index] == nullptr);
         this->FreeEntry(index);
@@ -116,7 +113,7 @@ void KHandleTable::Unreserve(Handle handle) {
 }
 
 void KHandleTable::Register(Handle handle, KAutoObject* obj) {
-    KScopedDisableDispatch dd(kernel);
+    KScopedDisableDispatch dd{m_kernel};
     KScopedSpinLock lk(m_lock);
 
     // Unpack the handle.
@@ -127,7 +124,7 @@ void KHandleTable::Register(Handle handle, KAutoObject* obj) {
     ASSERT(reserved == 0);
     ASSERT(linear_id != 0);
 
-    if (index < m_table_size) {
+    if (index < m_table_size) [[likely]] {
         // Set the entry.
         ASSERT(m_objects[index] == nullptr);
 
diff --git a/src/core/hle/kernel/k_handle_table.h b/src/core/hle/kernel/k_handle_table.h
index 0864a737c..65cae3b27 100644
--- a/src/core/hle/kernel/k_handle_table.h
+++ b/src/core/hle/kernel/k_handle_table.h
@@ -21,33 +21,38 @@ namespace Kernel {
 class KernelCore;
 
 class KHandleTable {
-public:
     YUZU_NON_COPYABLE(KHandleTable);
     YUZU_NON_MOVEABLE(KHandleTable);
 
+public:
     static constexpr size_t MaxTableSize = 1024;
 
-    explicit KHandleTable(KernelCore& kernel_);
-    ~KHandleTable();
+public:
+    explicit KHandleTable(KernelCore& kernel) : m_kernel(kernel) {}
 
     Result Initialize(s32 size) {
+        // Check that the table size is valid.
         R_UNLESS(size <= static_cast<s32>(MaxTableSize), ResultOutOfMemory);
 
+        // Lock.
+        KScopedDisableDispatch dd{m_kernel};
+        KScopedSpinLock lk(m_lock);
+
         // Initialize all fields.
         m_max_count = 0;
-        m_table_size = static_cast<u16>((size <= 0) ? MaxTableSize : size);
+        m_table_size = static_cast<s16>((size <= 0) ? MaxTableSize : size);
         m_next_linear_id = MinLinearId;
         m_count = 0;
         m_free_head_index = -1;
 
         // Free all entries.
-        for (s16 i = 0; i < static_cast<s16>(m_table_size); ++i) {
+        for (s32 i = 0; i < static_cast<s32>(m_table_size); ++i) {
             m_objects[i] = nullptr;
-            m_entry_infos[i].next_free_index = i - 1;
+            m_entry_infos[i].next_free_index = static_cast<s16>(i - 1);
             m_free_head_index = i;
         }
 
-        return ResultSuccess;
+        R_SUCCEED();
     }
 
     size_t GetTableSize() const {
@@ -66,13 +71,13 @@ public:
     template <typename T = KAutoObject>
     KScopedAutoObject<T> GetObjectWithoutPseudoHandle(Handle handle) const {
         // Lock and look up in table.
-        KScopedDisableDispatch dd(kernel);
+        KScopedDisableDispatch dd{m_kernel};
         KScopedSpinLock lk(m_lock);
 
         if constexpr (std::is_same_v<T, KAutoObject>) {
             return this->GetObjectImpl(handle);
         } else {
-            if (auto* obj = this->GetObjectImpl(handle); obj != nullptr) {
+            if (auto* obj = this->GetObjectImpl(handle); obj != nullptr) [[likely]] {
                 return obj->DynamicCast<T*>();
             } else {
                 return nullptr;
@@ -85,13 +90,13 @@ public:
         // Handle pseudo-handles.
         if constexpr (std::derived_from<KProcess, T>) {
             if (handle == Svc::PseudoHandle::CurrentProcess) {
-                auto* const cur_process = kernel.CurrentProcess();
+                auto* const cur_process = m_kernel.CurrentProcess();
                 ASSERT(cur_process != nullptr);
                 return cur_process;
             }
         } else if constexpr (std::derived_from<KThread, T>) {
             if (handle == Svc::PseudoHandle::CurrentThread) {
-                auto* const cur_thread = GetCurrentThreadPointer(kernel);
+                auto* const cur_thread = GetCurrentThreadPointer(m_kernel);
                 ASSERT(cur_thread != nullptr);
                 return cur_thread;
             }
@@ -100,6 +105,37 @@ public:
         return this->template GetObjectWithoutPseudoHandle<T>(handle);
     }
 
+    KScopedAutoObject<KAutoObject> GetObjectForIpcWithoutPseudoHandle(Handle handle) const {
+        // Lock and look up in table.
+        KScopedDisableDispatch dd{m_kernel};
+        KScopedSpinLock lk(m_lock);
+
+        return this->GetObjectImpl(handle);
+    }
+
+    KScopedAutoObject<KAutoObject> GetObjectForIpc(Handle handle, KThread* cur_thread) const {
+        // Handle pseudo-handles.
+        ASSERT(cur_thread != nullptr);
+        if (handle == Svc::PseudoHandle::CurrentProcess) {
+            auto* const cur_process =
+                static_cast<KAutoObject*>(static_cast<void*>(cur_thread->GetOwnerProcess()));
+            ASSERT(cur_process != nullptr);
+            return cur_process;
+        }
+        if (handle == Svc::PseudoHandle::CurrentThread) {
+            return static_cast<KAutoObject*>(cur_thread);
+        }
+
+        return GetObjectForIpcWithoutPseudoHandle(handle);
+    }
+
+    KScopedAutoObject<KAutoObject> GetObjectByIndex(Handle* out_handle, size_t index) const {
+        KScopedDisableDispatch dd{m_kernel};
+        KScopedSpinLock lk(m_lock);
+
+        return this->GetObjectByIndexImpl(out_handle, index);
+    }
+
     Result Reserve(Handle* out_handle);
     void Unreserve(Handle handle);
 
@@ -112,7 +148,7 @@ public:
         size_t num_opened;
         {
             // Lock the table.
-            KScopedDisableDispatch dd(kernel);
+            KScopedDisableDispatch dd{m_kernel};
             KScopedSpinLock lk(m_lock);
             for (num_opened = 0; num_opened < num_handles; num_opened++) {
                 // Get the current handle.
@@ -120,13 +156,13 @@ public:
 
                 // Get the object for the current handle.
                 KAutoObject* cur_object = this->GetObjectImpl(cur_handle);
-                if (cur_object == nullptr) {
+                if (cur_object == nullptr) [[unlikely]] {
                     break;
                 }
 
                 // Cast the current object to the desired type.
                 T* cur_t = cur_object->DynamicCast<T*>();
-                if (cur_t == nullptr) {
+                if (cur_t == nullptr) [[unlikely]] {
                     break;
                 }
 
@@ -137,7 +173,7 @@ public:
         }
 
         // If we converted every object, succeed.
-        if (num_opened == num_handles) {
+        if (num_opened == num_handles) [[likely]] {
             return true;
         }
 
@@ -191,21 +227,21 @@ private:
         ASSERT(reserved == 0);
 
         // Validate our indexing information.
-        if (raw_value == 0) {
+        if (raw_value == 0) [[unlikely]] {
             return false;
         }
-        if (linear_id == 0) {
+        if (linear_id == 0) [[unlikely]] {
             return false;
         }
-        if (index >= m_table_size) {
+        if (index >= m_table_size) [[unlikely]] {
             return false;
         }
 
         // Check that there's an object, and our serial id is correct.
-        if (m_objects[index] == nullptr) {
+        if (m_objects[index] == nullptr) [[unlikely]] {
             return false;
         }
-        if (m_entry_infos[index].GetLinearId() != linear_id) {
+        if (m_entry_infos[index].GetLinearId() != linear_id) [[unlikely]] {
             return false;
         }
 
@@ -215,11 +251,11 @@ private:
     KAutoObject* GetObjectImpl(Handle handle) const {
         // Handles must not have reserved bits set.
         const auto handle_pack = HandlePack(handle);
-        if (handle_pack.reserved != 0) {
+        if (handle_pack.reserved != 0) [[unlikely]] {
             return nullptr;
         }
 
-        if (this->IsValidHandle(handle)) {
+        if (this->IsValidHandle(handle)) [[likely]] {
             return m_objects[handle_pack.index];
         } else {
             return nullptr;
@@ -227,9 +263,8 @@ private:
     }
 
     KAutoObject* GetObjectByIndexImpl(Handle* out_handle, size_t index) const {
-
         // Index must be in bounds.
-        if (index >= m_table_size) {
+        if (index >= m_table_size) [[unlikely]] {
             return nullptr;
         }
 
@@ -244,18 +279,15 @@ private:
 
 private:
     union HandlePack {
-        HandlePack() = default;
-        HandlePack(Handle handle) : raw{static_cast<u32>(handle)} {}
+        constexpr HandlePack() = default;
+        constexpr HandlePack(Handle handle) : raw{static_cast<u32>(handle)} {}
 
-        u32 raw;
+        u32 raw{};
         BitField<0, 15, u32> index;
         BitField<15, 15, u32> linear_id;
         BitField<30, 2, u32> reserved;
     };
 
-    static constexpr u16 MinLinearId = 1;
-    static constexpr u16 MaxLinearId = 0x7FFF;
-
     static constexpr Handle EncodeHandle(u16 index, u16 linear_id) {
         HandlePack handle{};
         handle.index.Assign(index);
@@ -264,6 +296,10 @@ private:
         return handle.raw;
     }
 
+private:
+    static constexpr u16 MinLinearId = 1;
+    static constexpr u16 MaxLinearId = 0x7FFF;
+
     union EntryInfo {
         u16 linear_id;
         s16 next_free_index;
@@ -271,21 +307,21 @@ private:
         constexpr u16 GetLinearId() const {
             return linear_id;
         }
-        constexpr s16 GetNextFreeIndex() const {
+        constexpr s32 GetNextFreeIndex() const {
             return next_free_index;
         }
     };
 
 private:
+    KernelCore& m_kernel;
     std::array<EntryInfo, MaxTableSize> m_entry_infos{};
     std::array<KAutoObject*, MaxTableSize> m_objects{};
-    s32 m_free_head_index{-1};
+    mutable KSpinLock m_lock;
+    s32 m_free_head_index{};
     u16 m_table_size{};
     u16 m_max_count{};
-    u16 m_next_linear_id{MinLinearId};
+    u16 m_next_linear_id{};
     u16 m_count{};
-    mutable KSpinLock m_lock;
-    KernelCore& kernel;
 };
 
 } // namespace Kernel
diff --git a/src/core/hle/kernel/k_memory_block.h b/src/core/hle/kernel/k_memory_block.h
index 9444f6bd2..6f845d675 100644
--- a/src/core/hle/kernel/k_memory_block.h
+++ b/src/core/hle/kernel/k_memory_block.h
@@ -35,26 +35,32 @@ enum class KMemoryState : u32 {
     FlagCanMapProcess = (1 << 23),
     FlagCanChangeAttribute = (1 << 24),
     FlagCanCodeMemory = (1 << 25),
+    FlagLinearMapped = (1 << 26),
 
     FlagsData = FlagCanReprotect | FlagCanUseIpc | FlagCanUseNonDeviceIpc | FlagCanUseNonSecureIpc |
                 FlagMapped | FlagCanAlias | FlagCanTransfer | FlagCanQueryPhysical |
                 FlagCanDeviceMap | FlagCanAlignedDeviceMap | FlagCanIpcUserBuffer |
-                FlagReferenceCounted | FlagCanChangeAttribute,
+                FlagReferenceCounted | FlagCanChangeAttribute | FlagLinearMapped,
 
     FlagsCode = FlagCanDebug | FlagCanUseIpc | FlagCanUseNonDeviceIpc | FlagCanUseNonSecureIpc |
                 FlagMapped | FlagCode | FlagCanQueryPhysical | FlagCanDeviceMap |
-                FlagCanAlignedDeviceMap | FlagReferenceCounted,
+                FlagCanAlignedDeviceMap | FlagReferenceCounted | FlagLinearMapped,
 
-    FlagsMisc = FlagMapped | FlagReferenceCounted | FlagCanQueryPhysical | FlagCanDeviceMap,
+    FlagsMisc = FlagMapped | FlagReferenceCounted | FlagCanQueryPhysical | FlagCanDeviceMap |
+                FlagLinearMapped,
 
     Free = static_cast<u32>(Svc::MemoryState::Free),
-    Io = static_cast<u32>(Svc::MemoryState::Io) | FlagMapped,
+    Io = static_cast<u32>(Svc::MemoryState::Io) | FlagMapped | FlagCanDeviceMap |
+         FlagCanAlignedDeviceMap,
     Static = static_cast<u32>(Svc::MemoryState::Static) | FlagMapped | FlagCanQueryPhysical,
     Code = static_cast<u32>(Svc::MemoryState::Code) | FlagsCode | FlagCanMapProcess,
     CodeData = static_cast<u32>(Svc::MemoryState::CodeData) | FlagsData | FlagCanMapProcess |
                FlagCanCodeMemory,
-    Shared = static_cast<u32>(Svc::MemoryState::Shared) | FlagMapped | FlagReferenceCounted,
     Normal = static_cast<u32>(Svc::MemoryState::Normal) | FlagsData | FlagCanCodeMemory,
+    Shared = static_cast<u32>(Svc::MemoryState::Shared) | FlagMapped | FlagReferenceCounted |
+             FlagLinearMapped,
+
+    // Alias was removed after 1.0.0.
 
     AliasCode = static_cast<u32>(Svc::MemoryState::AliasCode) | FlagsCode | FlagCanMapProcess |
                 FlagCanCodeAlias,
@@ -67,18 +73,18 @@ enum class KMemoryState : u32 {
     Stack = static_cast<u32>(Svc::MemoryState::Stack) | FlagsMisc | FlagCanAlignedDeviceMap |
             FlagCanUseIpc | FlagCanUseNonSecureIpc | FlagCanUseNonDeviceIpc,
 
-    ThreadLocal =
-        static_cast<u32>(Svc::MemoryState::ThreadLocal) | FlagMapped | FlagReferenceCounted,
+    ThreadLocal = static_cast<u32>(Svc::MemoryState::ThreadLocal) | FlagMapped | FlagLinearMapped,
 
-    Transfered = static_cast<u32>(Svc::MemoryState::Transferred) | FlagsMisc |
+    Transfered = static_cast<u32>(Svc::MemoryState::Transfered) | FlagsMisc |
                  FlagCanAlignedDeviceMap | FlagCanChangeAttribute | FlagCanUseIpc |
                  FlagCanUseNonSecureIpc | FlagCanUseNonDeviceIpc,
 
-    SharedTransfered = static_cast<u32>(Svc::MemoryState::SharedTransferred) | FlagsMisc |
+    SharedTransfered = static_cast<u32>(Svc::MemoryState::SharedTransfered) | FlagsMisc |
                        FlagCanAlignedDeviceMap | FlagCanUseNonSecureIpc | FlagCanUseNonDeviceIpc,
 
     SharedCode = static_cast<u32>(Svc::MemoryState::SharedCode) | FlagMapped |
-                 FlagReferenceCounted | FlagCanUseNonSecureIpc | FlagCanUseNonDeviceIpc,
+                 FlagReferenceCounted | FlagLinearMapped | FlagCanUseNonSecureIpc |
+                 FlagCanUseNonDeviceIpc,
 
     Inaccessible = static_cast<u32>(Svc::MemoryState::Inaccessible),
 
@@ -91,69 +97,69 @@ enum class KMemoryState : u32 {
     Kernel = static_cast<u32>(Svc::MemoryState::Kernel) | FlagMapped,
 
     GeneratedCode = static_cast<u32>(Svc::MemoryState::GeneratedCode) | FlagMapped |
-                    FlagReferenceCounted | FlagCanDebug,
-    CodeOut = static_cast<u32>(Svc::MemoryState::CodeOut) | FlagMapped | FlagReferenceCounted,
+                    FlagReferenceCounted | FlagCanDebug | FlagLinearMapped,
+    CodeOut = static_cast<u32>(Svc::MemoryState::CodeOut) | FlagMapped | FlagReferenceCounted |
+              FlagLinearMapped,
 
     Coverage = static_cast<u32>(Svc::MemoryState::Coverage) | FlagMapped,
+
+    Insecure = static_cast<u32>(Svc::MemoryState::Insecure) | FlagMapped | FlagReferenceCounted |
+               FlagLinearMapped | FlagCanChangeAttribute | FlagCanDeviceMap |
+               FlagCanAlignedDeviceMap | FlagCanUseNonSecureIpc | FlagCanUseNonDeviceIpc,
 };
 DECLARE_ENUM_FLAG_OPERATORS(KMemoryState);
 
 static_assert(static_cast<u32>(KMemoryState::Free) == 0x00000000);
-static_assert(static_cast<u32>(KMemoryState::Io) == 0x00002001);
+static_assert(static_cast<u32>(KMemoryState::Io) == 0x00182001);
 static_assert(static_cast<u32>(KMemoryState::Static) == 0x00042002);
-static_assert(static_cast<u32>(KMemoryState::Code) == 0x00DC7E03);
-static_assert(static_cast<u32>(KMemoryState::CodeData) == 0x03FEBD04);
-static_assert(static_cast<u32>(KMemoryState::Normal) == 0x037EBD05);
-static_assert(static_cast<u32>(KMemoryState::Shared) == 0x00402006);
-static_assert(static_cast<u32>(KMemoryState::AliasCode) == 0x00DD7E08);
-static_assert(static_cast<u32>(KMemoryState::AliasCodeData) == 0x03FFBD09);
-static_assert(static_cast<u32>(KMemoryState::Ipc) == 0x005C3C0A);
-static_assert(static_cast<u32>(KMemoryState::Stack) == 0x005C3C0B);
-static_assert(static_cast<u32>(KMemoryState::ThreadLocal) == 0x0040200C);
-static_assert(static_cast<u32>(KMemoryState::Transfered) == 0x015C3C0D);
-static_assert(static_cast<u32>(KMemoryState::SharedTransfered) == 0x005C380E);
-static_assert(static_cast<u32>(KMemoryState::SharedCode) == 0x0040380F);
+static_assert(static_cast<u32>(KMemoryState::Code) == 0x04DC7E03);
+static_assert(static_cast<u32>(KMemoryState::CodeData) == 0x07FEBD04);
+static_assert(static_cast<u32>(KMemoryState::Normal) == 0x077EBD05);
+static_assert(static_cast<u32>(KMemoryState::Shared) == 0x04402006);
+
+static_assert(static_cast<u32>(KMemoryState::AliasCode) == 0x04DD7E08);
+static_assert(static_cast<u32>(KMemoryState::AliasCodeData) == 0x07FFBD09);
+static_assert(static_cast<u32>(KMemoryState::Ipc) == 0x045C3C0A);
+static_assert(static_cast<u32>(KMemoryState::Stack) == 0x045C3C0B);
+static_assert(static_cast<u32>(KMemoryState::ThreadLocal) == 0x0400200C);
+static_assert(static_cast<u32>(KMemoryState::Transfered) == 0x055C3C0D);
+static_assert(static_cast<u32>(KMemoryState::SharedTransfered) == 0x045C380E);
+static_assert(static_cast<u32>(KMemoryState::SharedCode) == 0x0440380F);
 static_assert(static_cast<u32>(KMemoryState::Inaccessible) == 0x00000010);
-static_assert(static_cast<u32>(KMemoryState::NonSecureIpc) == 0x005C3811);
-static_assert(static_cast<u32>(KMemoryState::NonDeviceIpc) == 0x004C2812);
+static_assert(static_cast<u32>(KMemoryState::NonSecureIpc) == 0x045C3811);
+static_assert(static_cast<u32>(KMemoryState::NonDeviceIpc) == 0x044C2812);
 static_assert(static_cast<u32>(KMemoryState::Kernel) == 0x00002013);
-static_assert(static_cast<u32>(KMemoryState::GeneratedCode) == 0x00402214);
-static_assert(static_cast<u32>(KMemoryState::CodeOut) == 0x00402015);
+static_assert(static_cast<u32>(KMemoryState::GeneratedCode) == 0x04402214);
+static_assert(static_cast<u32>(KMemoryState::CodeOut) == 0x04402015);
 static_assert(static_cast<u32>(KMemoryState::Coverage) == 0x00002016);
+static_assert(static_cast<u32>(KMemoryState::Insecure) == 0x05583817);
 
 enum class KMemoryPermission : u8 {
     None = 0,
     All = static_cast<u8>(~None),
 
-    Read = 1 << 0,
-    Write = 1 << 1,
-    Execute = 1 << 2,
-
-    ReadAndWrite = Read | Write,
-    ReadAndExecute = Read | Execute,
-
-    UserMask = static_cast<u8>(Svc::MemoryPermission::Read | Svc::MemoryPermission::Write |
-                               Svc::MemoryPermission::Execute),
-
     KernelShift = 3,
 
-    KernelRead = Read << KernelShift,
-    KernelWrite = Write << KernelShift,
-    KernelExecute = Execute << KernelShift,
+    KernelRead = static_cast<u8>(Svc::MemoryPermission::Read) << KernelShift,
+    KernelWrite = static_cast<u8>(Svc::MemoryPermission::Write) << KernelShift,
+    KernelExecute = static_cast<u8>(Svc::MemoryPermission::Execute) << KernelShift,
 
     NotMapped = (1 << (2 * KernelShift)),
 
     KernelReadWrite = KernelRead | KernelWrite,
     KernelReadExecute = KernelRead | KernelExecute,
 
-    UserRead = Read | KernelRead,
-    UserWrite = Write | KernelWrite,
-    UserExecute = Execute,
+    UserRead = static_cast<u8>(Svc::MemoryPermission::Read) | KernelRead,
+    UserWrite = static_cast<u8>(Svc::MemoryPermission::Write) | KernelWrite,
+    UserExecute = static_cast<u8>(Svc::MemoryPermission::Execute),
 
     UserReadWrite = UserRead | UserWrite,
     UserReadExecute = UserRead | UserExecute,
 
-    IpcLockChangeMask = NotMapped | UserReadWrite
+    UserMask = static_cast<u8>(Svc::MemoryPermission::Read | Svc::MemoryPermission::Write |
+                               Svc::MemoryPermission::Execute),
+
+    IpcLockChangeMask = NotMapped | UserReadWrite,
 };
 DECLARE_ENUM_FLAG_OPERATORS(KMemoryPermission);
 
@@ -468,6 +474,7 @@ public:
 
     constexpr void UpdateDeviceDisableMergeStateForShareLeft(
         [[maybe_unused]] KMemoryPermission new_perm, bool left, [[maybe_unused]] bool right) {
+        // New permission/right aren't used.
         if (left) {
             m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>(
                 m_disable_merge_attribute | KMemoryBlockDisableMergeAttribute::DeviceLeft);
@@ -478,6 +485,7 @@ public:
 
     constexpr void UpdateDeviceDisableMergeStateForShareRight(
         [[maybe_unused]] KMemoryPermission new_perm, [[maybe_unused]] bool left, bool right) {
+        // New permission/left aren't used.
         if (right) {
             m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>(
                 m_disable_merge_attribute | KMemoryBlockDisableMergeAttribute::DeviceRight);
@@ -494,6 +502,8 @@ public:
 
     constexpr void ShareToDevice([[maybe_unused]] KMemoryPermission new_perm, bool left,
                                  bool right) {
+        // New permission isn't used.
+
         // We must either be shared or have a zero lock count.
         ASSERT((m_attribute & KMemoryAttribute::DeviceShared) == KMemoryAttribute::DeviceShared ||
                m_device_use_count == 0);
@@ -509,6 +519,7 @@ public:
 
     constexpr void UpdateDeviceDisableMergeStateForUnshareLeft(
         [[maybe_unused]] KMemoryPermission new_perm, bool left, [[maybe_unused]] bool right) {
+        // New permission/right aren't used.
 
         if (left) {
             if (!m_device_disable_merge_left_count) {
@@ -528,6 +539,8 @@ public:
 
     constexpr void UpdateDeviceDisableMergeStateForUnshareRight(
         [[maybe_unused]] KMemoryPermission new_perm, [[maybe_unused]] bool left, bool right) {
+        // New permission/left aren't used.
+
         if (right) {
             const u16 old_device_disable_merge_right_count = m_device_disable_merge_right_count--;
             ASSERT(old_device_disable_merge_right_count > 0);
@@ -546,6 +559,8 @@ public:
 
     constexpr void UnshareToDevice([[maybe_unused]] KMemoryPermission new_perm, bool left,
                                    bool right) {
+        // New permission isn't used.
+
         // We must be shared.
         ASSERT((m_attribute & KMemoryAttribute::DeviceShared) == KMemoryAttribute::DeviceShared);
 
@@ -563,6 +578,7 @@ public:
 
     constexpr void UnshareToDeviceRight([[maybe_unused]] KMemoryPermission new_perm, bool left,
                                         bool right) {
+        // New permission isn't used.
 
         // We must be shared.
         ASSERT((m_attribute & KMemoryAttribute::DeviceShared) == KMemoryAttribute::DeviceShared);
@@ -613,6 +629,8 @@ public:
 
     constexpr void UnlockForIpc([[maybe_unused]] KMemoryPermission new_perm, bool left,
                                 [[maybe_unused]] bool right) {
+        // New permission isn't used.
+
         // We must be locked.
         ASSERT((m_attribute & KMemoryAttribute::IpcLocked) == KMemoryAttribute::IpcLocked);
 
diff --git a/src/core/hle/kernel/k_memory_layout.cpp b/src/core/hle/kernel/k_memory_layout.cpp
index 55dc296d0..72c3ee4b7 100644
--- a/src/core/hle/kernel/k_memory_layout.cpp
+++ b/src/core/hle/kernel/k_memory_layout.cpp
@@ -153,13 +153,9 @@ void KMemoryLayout::InitializeLinearMemoryRegionTrees(PAddr aligned_linear_phys_
     }
 }
 
-size_t KMemoryLayout::GetResourceRegionSizeForInit() {
-    // Calculate resource region size based on whether we allow extra threads.
-    const bool use_extra_resources = KSystemControl::Init::ShouldIncreaseThreadResourceLimit();
-    size_t resource_region_size =
-        KernelResourceSize + (use_extra_resources ? KernelSlabHeapAdditionalSize : 0);
-
-    return resource_region_size;
+size_t KMemoryLayout::GetResourceRegionSizeForInit(bool use_extra_resource) {
+    return KernelResourceSize + KSystemControl::SecureAppletMemorySize +
+           (use_extra_resource ? KernelSlabHeapAdditionalSize + KernelPageBufferAdditionalSize : 0);
 }
 
 } // namespace Kernel
diff --git a/src/core/hle/kernel/k_memory_layout.h b/src/core/hle/kernel/k_memory_layout.h
index 884fc623a..fd6e1d3e6 100644
--- a/src/core/hle/kernel/k_memory_layout.h
+++ b/src/core/hle/kernel/k_memory_layout.h
@@ -60,10 +60,12 @@ constexpr std::size_t KernelSlabHeapGapsSizeMax = 2_MiB - 64_KiB;
 constexpr std::size_t KernelSlabHeapSize = KernelSlabHeapDataSize + KernelSlabHeapGapsSizeMax;
 
 // NOTE: This is calculated from KThread slab counts, assuming KThread size <= 0x860.
-constexpr std::size_t KernelSlabHeapAdditionalSize = 0x68000;
+constexpr size_t KernelPageBufferHeapSize = 0x3E0000;
+constexpr size_t KernelSlabHeapAdditionalSize = 0x148000;
+constexpr size_t KernelPageBufferAdditionalSize = 0x33C000;
 
-constexpr std::size_t KernelResourceSize =
-    KernelPageTableHeapSize + KernelInitialPageHeapSize + KernelSlabHeapSize;
+constexpr std::size_t KernelResourceSize = KernelPageTableHeapSize + KernelInitialPageHeapSize +
+                                           KernelSlabHeapSize + KernelPageBufferHeapSize;
 
 constexpr bool IsKernelAddressKey(VAddr key) {
     return KernelVirtualAddressSpaceBase <= key && key <= KernelVirtualAddressSpaceLast;
@@ -168,6 +170,11 @@ public:
             KMemoryRegionType_VirtualDramKernelTraceBuffer));
     }
 
+    const KMemoryRegion& GetSecureAppletMemoryRegion() {
+        return Dereference(GetVirtualMemoryRegionTree().FindByType(
+            KMemoryRegionType_VirtualDramKernelSecureAppletMemory));
+    }
+
     const KMemoryRegion& GetVirtualLinearRegion(VAddr address) const {
         return Dereference(FindVirtualLinear(address));
     }
@@ -229,7 +236,7 @@ public:
 
     void InitializeLinearMemoryRegionTrees(PAddr aligned_linear_phys_start,
                                            VAddr linear_virtual_start);
-    static size_t GetResourceRegionSizeForInit();
+    static size_t GetResourceRegionSizeForInit(bool use_extra_resource);
 
     auto GetKernelRegionExtents() const {
         return GetVirtualMemoryRegionTree().GetDerivedRegionExtents(KMemoryRegionType_Kernel);
@@ -279,6 +286,10 @@ public:
         return GetPhysicalMemoryRegionTree().GetDerivedRegionExtents(
             KMemoryRegionType_DramKernelSlab);
     }
+    auto GetKernelSecureAppletMemoryRegionPhysicalExtents() {
+        return GetPhysicalMemoryRegionTree().GetDerivedRegionExtents(
+            KMemoryRegionType_DramKernelSecureAppletMemory);
+    }
     auto GetKernelPageTableHeapRegionPhysicalExtents() const {
         return GetPhysicalMemoryRegionTree().GetDerivedRegionExtents(
             KMemoryRegionType_DramKernelPtHeap);
diff --git a/src/core/hle/kernel/k_memory_manager.cpp b/src/core/hle/kernel/k_memory_manager.cpp
index 646711505..c4bf306e8 100644
--- a/src/core/hle/kernel/k_memory_manager.cpp
+++ b/src/core/hle/kernel/k_memory_manager.cpp
@@ -29,43 +29,44 @@ constexpr KMemoryManager::Pool GetPoolFromMemoryRegionType(u32 type) {
     } else if ((type | KMemoryRegionType_DramSystemNonSecurePool) == type) {
         return KMemoryManager::Pool::SystemNonSecure;
     } else {
-        ASSERT_MSG(false, "InvalidMemoryRegionType for conversion to Pool");
-        return {};
+        UNREACHABLE_MSG("InvalidMemoryRegionType for conversion to Pool");
     }
 }
 
 } // namespace
 
-KMemoryManager::KMemoryManager(Core::System& system_)
-    : system{system_}, pool_locks{
-                           KLightLock{system_.Kernel()},
-                           KLightLock{system_.Kernel()},
-                           KLightLock{system_.Kernel()},
-                           KLightLock{system_.Kernel()},
-                       } {}
+KMemoryManager::KMemoryManager(Core::System& system)
+    : m_system{system}, m_memory_layout{system.Kernel().MemoryLayout()},
+      m_pool_locks{
+          KLightLock{system.Kernel()},
+          KLightLock{system.Kernel()},
+          KLightLock{system.Kernel()},
+          KLightLock{system.Kernel()},
+      } {}
 
 void KMemoryManager::Initialize(VAddr management_region, size_t management_region_size) {
 
     // Clear the management region to zero.
     const VAddr management_region_end = management_region + management_region_size;
+    // std::memset(GetVoidPointer(management_region), 0, management_region_size);
 
     // Reset our manager count.
-    num_managers = 0;
+    m_num_managers = 0;
 
     // Traverse the virtual memory layout tree, initializing each manager as appropriate.
-    while (num_managers != MaxManagerCount) {
+    while (m_num_managers != MaxManagerCount) {
         // Locate the region that should initialize the current manager.
         PAddr region_address = 0;
         size_t region_size = 0;
         Pool region_pool = Pool::Count;
-        for (const auto& it : system.Kernel().MemoryLayout().GetPhysicalMemoryRegionTree()) {
+        for (const auto& it : m_system.Kernel().MemoryLayout().GetPhysicalMemoryRegionTree()) {
             // We only care about regions that we need to create managers for.
             if (!it.IsDerivedFrom(KMemoryRegionType_DramUserPool)) {
                 continue;
             }
 
             // We want to initialize the managers in order.
-            if (it.GetAttributes() != num_managers) {
+            if (it.GetAttributes() != m_num_managers) {
                 continue;
             }
 
@@ -97,8 +98,8 @@ void KMemoryManager::Initialize(VAddr management_region, size_t management_regio
         }
 
         // Initialize a new manager for the region.
-        Impl* manager = std::addressof(managers[num_managers++]);
-        ASSERT(num_managers <= managers.size());
+        Impl* manager = std::addressof(m_managers[m_num_managers++]);
+        ASSERT(m_num_managers <= m_managers.size());
 
         const size_t cur_size = manager->Initialize(region_address, region_size, management_region,
                                                     management_region_end, region_pool);
@@ -107,13 +108,13 @@ void KMemoryManager::Initialize(VAddr management_region, size_t management_regio
 
         // Insert the manager into the pool list.
         const auto region_pool_index = static_cast<u32>(region_pool);
-        if (pool_managers_tail[region_pool_index] == nullptr) {
-            pool_managers_head[region_pool_index] = manager;
+        if (m_pool_managers_tail[region_pool_index] == nullptr) {
+            m_pool_managers_head[region_pool_index] = manager;
         } else {
-            pool_managers_tail[region_pool_index]->SetNext(manager);
-            manager->SetPrev(pool_managers_tail[region_pool_index]);
+            m_pool_managers_tail[region_pool_index]->SetNext(manager);
+            manager->SetPrev(m_pool_managers_tail[region_pool_index]);
         }
-        pool_managers_tail[region_pool_index] = manager;
+        m_pool_managers_tail[region_pool_index] = manager;
     }
 
     // Free each region to its corresponding heap.
@@ -121,11 +122,10 @@ void KMemoryManager::Initialize(VAddr management_region, size_t management_regio
     const PAddr ini_start = GetInitialProcessBinaryPhysicalAddress();
     const PAddr ini_end = ini_start + InitialProcessBinarySizeMax;
     const PAddr ini_last = ini_end - 1;
-    for (const auto& it : system.Kernel().MemoryLayout().GetPhysicalMemoryRegionTree()) {
+    for (const auto& it : m_system.Kernel().MemoryLayout().GetPhysicalMemoryRegionTree()) {
         if (it.IsDerivedFrom(KMemoryRegionType_DramUserPool)) {
             // Get the manager for the region.
-            auto index = it.GetAttributes();
-            auto& manager = managers[index];
+            auto& manager = m_managers[it.GetAttributes()];
 
             const PAddr cur_start = it.GetAddress();
             const PAddr cur_last = it.GetLastAddress();
@@ -162,11 +162,19 @@ void KMemoryManager::Initialize(VAddr management_region, size_t management_regio
     }
 
     // Update the used size for all managers.
-    for (size_t i = 0; i < num_managers; ++i) {
-        managers[i].SetInitialUsedHeapSize(reserved_sizes[i]);
+    for (size_t i = 0; i < m_num_managers; ++i) {
+        m_managers[i].SetInitialUsedHeapSize(reserved_sizes[i]);
     }
 }
 
+Result KMemoryManager::InitializeOptimizedMemory(u64 process_id, Pool pool) {
+    UNREACHABLE();
+}
+
+void KMemoryManager::FinalizeOptimizedMemory(u64 process_id, Pool pool) {
+    UNREACHABLE();
+}
+
 PAddr KMemoryManager::AllocateAndOpenContinuous(size_t num_pages, size_t align_pages, u32 option) {
     // Early return if we're allocating no pages.
     if (num_pages == 0) {
@@ -175,7 +183,7 @@ PAddr KMemoryManager::AllocateAndOpenContinuous(size_t num_pages, size_t align_p
 
     // Lock the pool that we're allocating from.
     const auto [pool, dir] = DecodeOption(option);
-    KScopedLightLock lk(pool_locks[static_cast<std::size_t>(pool)]);
+    KScopedLightLock lk(m_pool_locks[static_cast<std::size_t>(pool)]);
 
     // Choose a heap based on our page size request.
     const s32 heap_index = KPageHeap::GetAlignedBlockIndex(num_pages, align_pages);
@@ -185,7 +193,7 @@ PAddr KMemoryManager::AllocateAndOpenContinuous(size_t num_pages, size_t align_p
     PAddr allocated_block = 0;
     for (chosen_manager = this->GetFirstManager(pool, dir); chosen_manager != nullptr;
          chosen_manager = this->GetNextManager(chosen_manager, dir)) {
-        allocated_block = chosen_manager->AllocateBlock(heap_index, true);
+        allocated_block = chosen_manager->AllocateAligned(heap_index, num_pages, align_pages);
         if (allocated_block != 0) {
             break;
         }
@@ -196,10 +204,9 @@ PAddr KMemoryManager::AllocateAndOpenContinuous(size_t num_pages, size_t align_p
         return 0;
     }
 
-    // If we allocated more than we need, free some.
-    const size_t allocated_pages = KPageHeap::GetBlockNumPages(heap_index);
-    if (allocated_pages > num_pages) {
-        chosen_manager->Free(allocated_block + num_pages * PageSize, allocated_pages - num_pages);
+    // Maintain the optimized memory bitmap, if we should.
+    if (m_has_optimized_process[static_cast<size_t>(pool)]) {
+        UNIMPLEMENTED();
     }
 
     // Open the first reference to the pages.
@@ -209,20 +216,21 @@ PAddr KMemoryManager::AllocateAndOpenContinuous(size_t num_pages, size_t align_p
 }
 
 Result KMemoryManager::AllocatePageGroupImpl(KPageGroup* out, size_t num_pages, Pool pool,
-                                             Direction dir, bool random) {
+                                             Direction dir, bool unoptimized, bool random) {
     // Choose a heap based on our page size request.
     const s32 heap_index = KPageHeap::GetBlockIndex(num_pages);
     R_UNLESS(0 <= heap_index, ResultOutOfMemory);
 
     // Ensure that we don't leave anything un-freed.
-    auto group_guard = SCOPE_GUARD({
+    ON_RESULT_FAILURE {
         for (const auto& it : out->Nodes()) {
-            auto& manager = this->GetManager(system.Kernel().MemoryLayout(), it.GetAddress());
-            const size_t num_pages_to_free =
+            auto& manager = this->GetManager(it.GetAddress());
+            const size_t node_num_pages =
                 std::min(it.GetNumPages(), (manager.GetEndAddress() - it.GetAddress()) / PageSize);
-            manager.Free(it.GetAddress(), num_pages_to_free);
+            manager.Free(it.GetAddress(), node_num_pages);
         }
-    });
+        out->Finalize();
+    };
 
     // Keep allocating until we've allocated all our pages.
     for (s32 index = heap_index; index >= 0 && num_pages > 0; index--) {
@@ -236,12 +244,17 @@ Result KMemoryManager::AllocatePageGroupImpl(KPageGroup* out, size_t num_pages,
                     break;
                 }
 
-                // Safely add it to our group.
-                {
-                    auto block_guard =
-                        SCOPE_GUARD({ cur_manager->Free(allocated_block, pages_per_alloc); });
-                    R_TRY(out->AddBlock(allocated_block, pages_per_alloc));
-                    block_guard.Cancel();
+                // Ensure we don't leak the block if we fail.
+                ON_RESULT_FAILURE_2 {
+                    cur_manager->Free(allocated_block, pages_per_alloc);
+                };
+
+                // Add the block to our group.
+                R_TRY(out->AddBlock(allocated_block, pages_per_alloc));
+
+                // Maintain the optimized memory bitmap, if we should.
+                if (unoptimized) {
+                    UNIMPLEMENTED();
                 }
 
                 num_pages -= pages_per_alloc;
@@ -253,8 +266,7 @@ Result KMemoryManager::AllocatePageGroupImpl(KPageGroup* out, size_t num_pages,
     R_UNLESS(num_pages == 0, ResultOutOfMemory);
 
     // We succeeded!
-    group_guard.Cancel();
-    return ResultSuccess;
+    R_SUCCEED();
 }
 
 Result KMemoryManager::AllocateAndOpen(KPageGroup* out, size_t num_pages, u32 option) {
@@ -266,10 +278,11 @@ Result KMemoryManager::AllocateAndOpen(KPageGroup* out, size_t num_pages, u32 op
 
     // Lock the pool that we're allocating from.
     const auto [pool, dir] = DecodeOption(option);
-    KScopedLightLock lk(pool_locks[static_cast<size_t>(pool)]);
+    KScopedLightLock lk(m_pool_locks[static_cast<size_t>(pool)]);
 
     // Allocate the page group.
-    R_TRY(this->AllocatePageGroupImpl(out, num_pages, pool, dir, false));
+    R_TRY(this->AllocatePageGroupImpl(out, num_pages, pool, dir,
+                                      m_has_optimized_process[static_cast<size_t>(pool)], true));
 
     // Open the first reference to the pages.
     for (const auto& block : out->Nodes()) {
@@ -277,7 +290,7 @@ Result KMemoryManager::AllocateAndOpen(KPageGroup* out, size_t num_pages, u32 op
         size_t remaining_pages = block.GetNumPages();
         while (remaining_pages > 0) {
             // Get the manager for the current address.
-            auto& manager = this->GetManager(system.Kernel().MemoryLayout(), cur_address);
+            auto& manager = this->GetManager(cur_address);
 
             // Process part or all of the block.
             const size_t cur_pages =
@@ -290,11 +303,11 @@ Result KMemoryManager::AllocateAndOpen(KPageGroup* out, size_t num_pages, u32 op
         }
     }
 
-    return ResultSuccess;
+    R_SUCCEED();
 }
 
-Result KMemoryManager::AllocateAndOpenForProcess(KPageGroup* out, size_t num_pages, u32 option,
-                                                 u64 process_id, u8 fill_pattern) {
+Result KMemoryManager::AllocateForProcess(KPageGroup* out, size_t num_pages, u32 option,
+                                          u64 process_id, u8 fill_pattern) {
     ASSERT(out != nullptr);
     ASSERT(out->GetNumPages() == 0);
 
@@ -302,83 +315,89 @@ Result KMemoryManager::AllocateAndOpenForProcess(KPageGroup* out, size_t num_pag
     const auto [pool, dir] = DecodeOption(option);
 
     // Allocate the memory.
+    bool optimized;
     {
         // Lock the pool that we're allocating from.
-        KScopedLightLock lk(pool_locks[static_cast<size_t>(pool)]);
+        KScopedLightLock lk(m_pool_locks[static_cast<size_t>(pool)]);
+
+        // Check if we have an optimized process.
+        const bool has_optimized = m_has_optimized_process[static_cast<size_t>(pool)];
+        const bool is_optimized = m_optimized_process_ids[static_cast<size_t>(pool)] == process_id;
 
         // Allocate the page group.
-        R_TRY(this->AllocatePageGroupImpl(out, num_pages, pool, dir, false));
+        R_TRY(this->AllocatePageGroupImpl(out, num_pages, pool, dir, has_optimized && !is_optimized,
+                                          false));
 
-        // Open the first reference to the pages.
-        for (const auto& block : out->Nodes()) {
-            PAddr cur_address = block.GetAddress();
-            size_t remaining_pages = block.GetNumPages();
-            while (remaining_pages > 0) {
-                // Get the manager for the current address.
-                auto& manager = this->GetManager(system.Kernel().MemoryLayout(), cur_address);
-
-                // Process part or all of the block.
-                const size_t cur_pages =
-                    std::min(remaining_pages, manager.GetPageOffsetToEnd(cur_address));
-                manager.OpenFirst(cur_address, cur_pages);
-
-                // Advance.
-                cur_address += cur_pages * PageSize;
-                remaining_pages -= cur_pages;
-            }
-        }
+        // Set whether we should optimize.
+        optimized = has_optimized && is_optimized;
     }
 
-    // Set all the allocated memory.
-    for (const auto& block : out->Nodes()) {
-        std::memset(system.DeviceMemory().GetPointer<void>(block.GetAddress()), fill_pattern,
-                    block.GetSize());
-    }
+    // Perform optimized memory tracking, if we should.
+    if (optimized) {
+        // Iterate over the allocated blocks.
+        for (const auto& block : out->Nodes()) {
+            // Get the block extents.
+            const PAddr block_address = block.GetAddress();
+            const size_t block_pages = block.GetNumPages();
 
-    return ResultSuccess;
-}
+            // If it has no pages, we don't need to do anything.
+            if (block_pages == 0) {
+                continue;
+            }
 
-void KMemoryManager::Open(PAddr address, size_t num_pages) {
-    // Repeatedly open references until we've done so for all pages.
-    while (num_pages) {
-        auto& manager = this->GetManager(system.Kernel().MemoryLayout(), address);
-        const size_t cur_pages = std::min(num_pages, manager.GetPageOffsetToEnd(address));
+            // Fill all the pages that we need to fill.
+            bool any_new = false;
+            {
+                PAddr cur_address = block_address;
+                size_t remaining_pages = block_pages;
+                while (remaining_pages > 0) {
+                    // Get the manager for the current address.
+                    auto& manager = this->GetManager(cur_address);
+
+                    // Process part or all of the block.
+                    const size_t cur_pages =
+                        std::min(remaining_pages, manager.GetPageOffsetToEnd(cur_address));
+                    any_new =
+                        manager.ProcessOptimizedAllocation(cur_address, cur_pages, fill_pattern);
+
+                    // Advance.
+                    cur_address += cur_pages * PageSize;
+                    remaining_pages -= cur_pages;
+                }
+            }
 
-        {
-            KScopedLightLock lk(pool_locks[static_cast<size_t>(manager.GetPool())]);
-            manager.Open(address, cur_pages);
+            // If there are new pages, update tracking for the allocation.
+            if (any_new) {
+                // Update tracking for the allocation.
+                PAddr cur_address = block_address;
+                size_t remaining_pages = block_pages;
+                while (remaining_pages > 0) {
+                    // Get the manager for the current address.
+                    auto& manager = this->GetManager(cur_address);
+
+                    // Lock the pool for the manager.
+                    KScopedLightLock lk(m_pool_locks[static_cast<size_t>(manager.GetPool())]);
+
+                    // Track some or all of the current pages.
+                    const size_t cur_pages =
+                        std::min(remaining_pages, manager.GetPageOffsetToEnd(cur_address));
+                    manager.TrackOptimizedAllocation(cur_address, cur_pages);
+
+                    // Advance.
+                    cur_address += cur_pages * PageSize;
+                    remaining_pages -= cur_pages;
+                }
+            }
         }
-
-        num_pages -= cur_pages;
-        address += cur_pages * PageSize;
-    }
-}
-
-void KMemoryManager::Close(PAddr address, size_t num_pages) {
-    // Repeatedly close references until we've done so for all pages.
-    while (num_pages) {
-        auto& manager = this->GetManager(system.Kernel().MemoryLayout(), address);
-        const size_t cur_pages = std::min(num_pages, manager.GetPageOffsetToEnd(address));
-
-        {
-            KScopedLightLock lk(pool_locks[static_cast<size_t>(manager.GetPool())]);
-            manager.Close(address, cur_pages);
+    } else {
+        // Set all the allocated memory.
+        for (const auto& block : out->Nodes()) {
+            std::memset(m_system.DeviceMemory().GetPointer<void>(block.GetAddress()), fill_pattern,
+                        block.GetSize());
         }
-
-        num_pages -= cur_pages;
-        address += cur_pages * PageSize;
     }
-}
 
-void KMemoryManager::Close(const KPageGroup& pg) {
-    for (const auto& node : pg.Nodes()) {
-        Close(node.GetAddress(), node.GetNumPages());
-    }
-}
-void KMemoryManager::Open(const KPageGroup& pg) {
-    for (const auto& node : pg.Nodes()) {
-        Open(node.GetAddress(), node.GetNumPages());
-    }
+    R_SUCCEED();
 }
 
 size_t KMemoryManager::Impl::Initialize(PAddr address, size_t size, VAddr management,
@@ -394,18 +413,31 @@ size_t KMemoryManager::Impl::Initialize(PAddr address, size_t size, VAddr manage
     ASSERT(Common::IsAligned(total_management_size, PageSize));
 
     // Setup region.
-    pool = p;
-    management_region = management;
-    page_reference_counts.resize(
+    m_pool = p;
+    m_management_region = management;
+    m_page_reference_counts.resize(
         Kernel::Board::Nintendo::Nx::KSystemControl::Init::GetIntendedMemorySize() / PageSize);
-    ASSERT(Common::IsAligned(management_region, PageSize));
+    ASSERT(Common::IsAligned(m_management_region, PageSize));
 
     // Initialize the manager's KPageHeap.
-    heap.Initialize(address, size, management + manager_size, page_heap_size);
+    m_heap.Initialize(address, size, management + manager_size, page_heap_size);
 
     return total_management_size;
 }
 
+void KMemoryManager::Impl::TrackUnoptimizedAllocation(PAddr block, size_t num_pages) {
+    UNREACHABLE();
+}
+
+void KMemoryManager::Impl::TrackOptimizedAllocation(PAddr block, size_t num_pages) {
+    UNREACHABLE();
+}
+
+bool KMemoryManager::Impl::ProcessOptimizedAllocation(PAddr block, size_t num_pages,
+                                                      u8 fill_pattern) {
+    UNREACHABLE();
+}
+
 size_t KMemoryManager::Impl::CalculateManagementOverheadSize(size_t region_size) {
     const size_t ref_count_size = (region_size / PageSize) * sizeof(u16);
     const size_t optimize_map_size =
diff --git a/src/core/hle/kernel/k_memory_manager.h b/src/core/hle/kernel/k_memory_manager.h
index dcb9b6348..401d4e644 100644
--- a/src/core/hle/kernel/k_memory_manager.h
+++ b/src/core/hle/kernel/k_memory_manager.h
@@ -21,11 +21,8 @@ namespace Kernel {
 
 class KPageGroup;
 
-class KMemoryManager final {
+class KMemoryManager {
 public:
-    YUZU_NON_COPYABLE(KMemoryManager);
-    YUZU_NON_MOVEABLE(KMemoryManager);
-
     enum class Pool : u32 {
         Application = 0,
         Applet = 1,
@@ -45,16 +42,85 @@ public:
     enum class Direction : u32 {
         FromFront = 0,
         FromBack = 1,
-
         Shift = 0,
         Mask = (0xF << Shift),
     };
 
-    explicit KMemoryManager(Core::System& system_);
+    static constexpr size_t MaxManagerCount = 10;
+
+    explicit KMemoryManager(Core::System& system);
 
     void Initialize(VAddr management_region, size_t management_region_size);
 
-    constexpr size_t GetSize(Pool pool) const {
+    Result InitializeOptimizedMemory(u64 process_id, Pool pool);
+    void FinalizeOptimizedMemory(u64 process_id, Pool pool);
+
+    PAddr AllocateAndOpenContinuous(size_t num_pages, size_t align_pages, u32 option);
+    Result AllocateAndOpen(KPageGroup* out, size_t num_pages, u32 option);
+    Result AllocateForProcess(KPageGroup* out, size_t num_pages, u32 option, u64 process_id,
+                              u8 fill_pattern);
+
+    Pool GetPool(PAddr address) const {
+        return this->GetManager(address).GetPool();
+    }
+
+    void Open(PAddr address, size_t num_pages) {
+        // Repeatedly open references until we've done so for all pages.
+        while (num_pages) {
+            auto& manager = this->GetManager(address);
+            const size_t cur_pages = std::min(num_pages, manager.GetPageOffsetToEnd(address));
+
+            {
+                KScopedLightLock lk(m_pool_locks[static_cast<size_t>(manager.GetPool())]);
+                manager.Open(address, cur_pages);
+            }
+
+            num_pages -= cur_pages;
+            address += cur_pages * PageSize;
+        }
+    }
+
+    void OpenFirst(PAddr address, size_t num_pages) {
+        // Repeatedly open references until we've done so for all pages.
+        while (num_pages) {
+            auto& manager = this->GetManager(address);
+            const size_t cur_pages = std::min(num_pages, manager.GetPageOffsetToEnd(address));
+
+            {
+                KScopedLightLock lk(m_pool_locks[static_cast<size_t>(manager.GetPool())]);
+                manager.OpenFirst(address, cur_pages);
+            }
+
+            num_pages -= cur_pages;
+            address += cur_pages * PageSize;
+        }
+    }
+
+    void Close(PAddr address, size_t num_pages) {
+        // Repeatedly close references until we've done so for all pages.
+        while (num_pages) {
+            auto& manager = this->GetManager(address);
+            const size_t cur_pages = std::min(num_pages, manager.GetPageOffsetToEnd(address));
+
+            {
+                KScopedLightLock lk(m_pool_locks[static_cast<size_t>(manager.GetPool())]);
+                manager.Close(address, cur_pages);
+            }
+
+            num_pages -= cur_pages;
+            address += cur_pages * PageSize;
+        }
+    }
+
+    size_t GetSize() {
+        size_t total = 0;
+        for (size_t i = 0; i < m_num_managers; i++) {
+            total += m_managers[i].GetSize();
+        }
+        return total;
+    }
+
+    size_t GetSize(Pool pool) {
         constexpr Direction GetSizeDirection = Direction::FromFront;
         size_t total = 0;
         for (auto* manager = this->GetFirstManager(pool, GetSizeDirection); manager != nullptr;
@@ -64,18 +130,36 @@ public:
         return total;
     }
 
-    PAddr AllocateAndOpenContinuous(size_t num_pages, size_t align_pages, u32 option);
-    Result AllocateAndOpen(KPageGroup* out, size_t num_pages, u32 option);
-    Result AllocateAndOpenForProcess(KPageGroup* out, size_t num_pages, u32 option, u64 process_id,
-                                     u8 fill_pattern);
+    size_t GetFreeSize() {
+        size_t total = 0;
+        for (size_t i = 0; i < m_num_managers; i++) {
+            KScopedLightLock lk(m_pool_locks[static_cast<size_t>(m_managers[i].GetPool())]);
+            total += m_managers[i].GetFreeSize();
+        }
+        return total;
+    }
 
-    static constexpr size_t MaxManagerCount = 10;
+    size_t GetFreeSize(Pool pool) {
+        KScopedLightLock lk(m_pool_locks[static_cast<size_t>(pool)]);
+
+        constexpr Direction GetSizeDirection = Direction::FromFront;
+        size_t total = 0;
+        for (auto* manager = this->GetFirstManager(pool, GetSizeDirection); manager != nullptr;
+             manager = this->GetNextManager(manager, GetSizeDirection)) {
+            total += manager->GetFreeSize();
+        }
+        return total;
+    }
 
-    void Close(PAddr address, size_t num_pages);
-    void Close(const KPageGroup& pg);
+    void DumpFreeList(Pool pool) {
+        KScopedLightLock lk(m_pool_locks[static_cast<size_t>(pool)]);
 
-    void Open(PAddr address, size_t num_pages);
-    void Open(const KPageGroup& pg);
+        constexpr Direction DumpDirection = Direction::FromFront;
+        for (auto* manager = this->GetFirstManager(pool, DumpDirection); manager != nullptr;
+             manager = this->GetNextManager(manager, DumpDirection)) {
+            manager->DumpFreeList();
+        }
+    }
 
 public:
     static size_t CalculateManagementOverheadSize(size_t region_size) {
@@ -88,14 +172,13 @@ public:
     }
 
     static constexpr Pool GetPool(u32 option) {
-        return static_cast<Pool>((static_cast<u32>(option) & static_cast<u32>(Pool::Mask)) >>
+        return static_cast<Pool>((option & static_cast<u32>(Pool::Mask)) >>
                                  static_cast<u32>(Pool::Shift));
     }
 
     static constexpr Direction GetDirection(u32 option) {
-        return static_cast<Direction>(
-            (static_cast<u32>(option) & static_cast<u32>(Direction::Mask)) >>
-            static_cast<u32>(Direction::Shift));
+        return static_cast<Direction>((option & static_cast<u32>(Direction::Mask)) >>
+                                      static_cast<u32>(Direction::Shift));
     }
 
     static constexpr std::tuple<Pool, Direction> DecodeOption(u32 option) {
@@ -103,74 +186,88 @@ public:
     }
 
 private:
-    class Impl final {
+    class Impl {
     public:
-        YUZU_NON_COPYABLE(Impl);
-        YUZU_NON_MOVEABLE(Impl);
+        static size_t CalculateManagementOverheadSize(size_t region_size);
+
+        static constexpr size_t CalculateOptimizedProcessOverheadSize(size_t region_size) {
+            return (Common::AlignUp((region_size / PageSize), Common::BitSize<u64>()) /
+                    Common::BitSize<u64>()) *
+                   sizeof(u64);
+        }
 
+    public:
         Impl() = default;
-        ~Impl() = default;
 
         size_t Initialize(PAddr address, size_t size, VAddr management, VAddr management_end,
                           Pool p);
 
-        VAddr AllocateBlock(s32 index, bool random) {
-            return heap.AllocateBlock(index, random);
+        PAddr AllocateBlock(s32 index, bool random) {
+            return m_heap.AllocateBlock(index, random);
         }
-
-        void Free(VAddr addr, size_t num_pages) {
-            heap.Free(addr, num_pages);
+        PAddr AllocateAligned(s32 index, size_t num_pages, size_t align_pages) {
+            return m_heap.AllocateAligned(index, num_pages, align_pages);
+        }
+        void Free(PAddr addr, size_t num_pages) {
+            m_heap.Free(addr, num_pages);
         }
 
         void SetInitialUsedHeapSize(size_t reserved_size) {
-            heap.SetInitialUsedSize(reserved_size);
+            m_heap.SetInitialUsedSize(reserved_size);
         }
 
-        constexpr Pool GetPool() const {
-            return pool;
+        void InitializeOptimizedMemory() {
+            UNIMPLEMENTED();
         }
 
+        void TrackUnoptimizedAllocation(PAddr block, size_t num_pages);
+        void TrackOptimizedAllocation(PAddr block, size_t num_pages);
+
+        bool ProcessOptimizedAllocation(PAddr block, size_t num_pages, u8 fill_pattern);
+
+        constexpr Pool GetPool() const {
+            return m_pool;
+        }
         constexpr size_t GetSize() const {
-            return heap.GetSize();
+            return m_heap.GetSize();
+        }
+        constexpr PAddr GetEndAddress() const {
+            return m_heap.GetEndAddress();
         }
 
-        constexpr VAddr GetAddress() const {
-            return heap.GetAddress();
+        size_t GetFreeSize() const {
+            return m_heap.GetFreeSize();
         }
 
-        constexpr VAddr GetEndAddress() const {
-            return heap.GetEndAddress();
+        void DumpFreeList() const {
+            UNIMPLEMENTED();
         }
 
         constexpr size_t GetPageOffset(PAddr address) const {
-            return heap.GetPageOffset(address);
+            return m_heap.GetPageOffset(address);
         }
-
         constexpr size_t GetPageOffsetToEnd(PAddr address) const {
-            return heap.GetPageOffsetToEnd(address);
+            return m_heap.GetPageOffsetToEnd(address);
         }
 
         constexpr void SetNext(Impl* n) {
-            next = n;
+            m_next = n;
         }
-
         constexpr void SetPrev(Impl* n) {
-            prev = n;
+            m_prev = n;
         }
-
         constexpr Impl* GetNext() const {
-            return next;
+            return m_next;
         }
-
         constexpr Impl* GetPrev() const {
-            return prev;
+            return m_prev;
         }
 
         void OpenFirst(PAddr address, size_t num_pages) {
             size_t index = this->GetPageOffset(address);
             const size_t end = index + num_pages;
             while (index < end) {
-                const RefCount ref_count = (++page_reference_counts[index]);
+                const RefCount ref_count = (++m_page_reference_counts[index]);
                 ASSERT(ref_count == 1);
 
                 index++;
@@ -181,7 +278,7 @@ private:
             size_t index = this->GetPageOffset(address);
             const size_t end = index + num_pages;
             while (index < end) {
-                const RefCount ref_count = (++page_reference_counts[index]);
+                const RefCount ref_count = (++m_page_reference_counts[index]);
                 ASSERT(ref_count > 1);
 
                 index++;
@@ -195,8 +292,8 @@ private:
             size_t free_start = 0;
             size_t free_count = 0;
             while (index < end) {
-                ASSERT(page_reference_counts[index] > 0);
-                const RefCount ref_count = (--page_reference_counts[index]);
+                ASSERT(m_page_reference_counts[index] > 0);
+                const RefCount ref_count = (--m_page_reference_counts[index]);
 
                 // Keep track of how many zero refcounts we see in a row, to minimize calls to free.
                 if (ref_count == 0) {
@@ -208,7 +305,7 @@ private:
                     }
                 } else {
                     if (free_count > 0) {
-                        this->Free(heap.GetAddress() + free_start * PageSize, free_count);
+                        this->Free(m_heap.GetAddress() + free_start * PageSize, free_count);
                         free_count = 0;
                     }
                 }
@@ -217,44 +314,36 @@ private:
             }
 
             if (free_count > 0) {
-                this->Free(heap.GetAddress() + free_start * PageSize, free_count);
+                this->Free(m_heap.GetAddress() + free_start * PageSize, free_count);
             }
         }
 
-        static size_t CalculateManagementOverheadSize(size_t region_size);
-
-        static constexpr size_t CalculateOptimizedProcessOverheadSize(size_t region_size) {
-            return (Common::AlignUp((region_size / PageSize), Common::BitSize<u64>()) /
-                    Common::BitSize<u64>()) *
-                   sizeof(u64);
-        }
-
     private:
         using RefCount = u16;
 
-        KPageHeap heap;
-        std::vector<RefCount> page_reference_counts;
-        VAddr management_region{};
-        Pool pool{};
-        Impl* next{};
-        Impl* prev{};
+        KPageHeap m_heap;
+        std::vector<RefCount> m_page_reference_counts;
+        VAddr m_management_region{};
+        Pool m_pool{};
+        Impl* m_next{};
+        Impl* m_prev{};
     };
 
 private:
-    Impl& GetManager(const KMemoryLayout& memory_layout, PAddr address) {
-        return managers[memory_layout.GetPhysicalLinearRegion(address).GetAttributes()];
+    Impl& GetManager(PAddr address) {
+        return m_managers[m_memory_layout.GetPhysicalLinearRegion(address).GetAttributes()];
     }
 
-    const Impl& GetManager(const KMemoryLayout& memory_layout, PAddr address) const {
-        return managers[memory_layout.GetPhysicalLinearRegion(address).GetAttributes()];
+    const Impl& GetManager(PAddr address) const {
+        return m_managers[m_memory_layout.GetPhysicalLinearRegion(address).GetAttributes()];
     }
 
-    constexpr Impl* GetFirstManager(Pool pool, Direction dir) const {
-        return dir == Direction::FromBack ? pool_managers_tail[static_cast<size_t>(pool)]
-                                          : pool_managers_head[static_cast<size_t>(pool)];
+    constexpr Impl* GetFirstManager(Pool pool, Direction dir) {
+        return dir == Direction::FromBack ? m_pool_managers_tail[static_cast<size_t>(pool)]
+                                          : m_pool_managers_head[static_cast<size_t>(pool)];
     }
 
-    constexpr Impl* GetNextManager(Impl* cur, Direction dir) const {
+    constexpr Impl* GetNextManager(Impl* cur, Direction dir) {
         if (dir == Direction::FromBack) {
             return cur->GetPrev();
         } else {
@@ -263,15 +352,21 @@ private:
     }
 
     Result AllocatePageGroupImpl(KPageGroup* out, size_t num_pages, Pool pool, Direction dir,
-                                 bool random);
+                                 bool unoptimized, bool random);
 
 private:
-    Core::System& system;
-    std::array<KLightLock, static_cast<size_t>(Pool::Count)> pool_locks;
-    std::array<Impl*, MaxManagerCount> pool_managers_head{};
-    std::array<Impl*, MaxManagerCount> pool_managers_tail{};
-    std::array<Impl, MaxManagerCount> managers;
-    size_t num_managers{};
+    template <typename T>
+    using PoolArray = std::array<T, static_cast<size_t>(Pool::Count)>;
+
+    Core::System& m_system;
+    const KMemoryLayout& m_memory_layout;
+    PoolArray<KLightLock> m_pool_locks;
+    std::array<Impl*, MaxManagerCount> m_pool_managers_head{};
+    std::array<Impl*, MaxManagerCount> m_pool_managers_tail{};
+    std::array<Impl, MaxManagerCount> m_managers;
+    size_t m_num_managers{};
+    PoolArray<u64> m_optimized_process_ids{};
+    PoolArray<bool> m_has_optimized_process{};
 };
 
 } // namespace Kernel
diff --git a/src/core/hle/kernel/k_memory_region_type.h b/src/core/hle/kernel/k_memory_region_type.h
index 7e2fcccdc..e5630c1ac 100644
--- a/src/core/hle/kernel/k_memory_region_type.h
+++ b/src/core/hle/kernel/k_memory_region_type.h
@@ -142,32 +142,38 @@ private:
 
 } // namespace impl
 
-constexpr auto KMemoryRegionType_None = impl::KMemoryRegionTypeValue();
-constexpr auto KMemoryRegionType_Kernel = KMemoryRegionType_None.DeriveInitial(0, 2);
-constexpr auto KMemoryRegionType_Dram = KMemoryRegionType_None.DeriveInitial(1, 2);
+constexpr inline auto KMemoryRegionType_None = impl::KMemoryRegionTypeValue();
+
+constexpr inline auto KMemoryRegionType_Kernel = KMemoryRegionType_None.DeriveInitial(0, 2);
+constexpr inline auto KMemoryRegionType_Dram = KMemoryRegionType_None.DeriveInitial(1, 2);
 static_assert(KMemoryRegionType_Kernel.GetValue() == 0x1);
 static_assert(KMemoryRegionType_Dram.GetValue() == 0x2);
 
-constexpr auto KMemoryRegionType_DramKernelBase =
+// constexpr inline auto KMemoryRegionType_CoreLocalRegion =
+// KMemoryRegionType_None.DeriveInitial(2).Finalize();
+// static_assert(KMemoryRegionType_CoreLocalRegion.GetValue() == 0x4);
+
+constexpr inline auto KMemoryRegionType_DramKernelBase =
     KMemoryRegionType_Dram.DeriveSparse(0, 3, 0)
         .SetAttribute(KMemoryRegionAttr_NoUserMap)
         .SetAttribute(KMemoryRegionAttr_CarveoutProtected);
-constexpr auto KMemoryRegionType_DramReservedBase = KMemoryRegionType_Dram.DeriveSparse(0, 3, 1);
-constexpr auto KMemoryRegionType_DramHeapBase =
+constexpr inline auto KMemoryRegionType_DramReservedBase =
+    KMemoryRegionType_Dram.DeriveSparse(0, 3, 1);
+constexpr inline auto KMemoryRegionType_DramHeapBase =
     KMemoryRegionType_Dram.DeriveSparse(0, 3, 2).SetAttribute(KMemoryRegionAttr_LinearMapped);
 static_assert(KMemoryRegionType_DramKernelBase.GetValue() ==
               (0xE | KMemoryRegionAttr_CarveoutProtected | KMemoryRegionAttr_NoUserMap));
 static_assert(KMemoryRegionType_DramReservedBase.GetValue() == (0x16));
 static_assert(KMemoryRegionType_DramHeapBase.GetValue() == (0x26 | KMemoryRegionAttr_LinearMapped));
 
-constexpr auto KMemoryRegionType_DramKernelCode =
+constexpr inline auto KMemoryRegionType_DramKernelCode =
     KMemoryRegionType_DramKernelBase.DeriveSparse(0, 4, 0);
-constexpr auto KMemoryRegionType_DramKernelSlab =
+constexpr inline auto KMemoryRegionType_DramKernelSlab =
     KMemoryRegionType_DramKernelBase.DeriveSparse(0, 4, 1);
-constexpr auto KMemoryRegionType_DramKernelPtHeap =
+constexpr inline auto KMemoryRegionType_DramKernelPtHeap =
     KMemoryRegionType_DramKernelBase.DeriveSparse(0, 4, 2).SetAttribute(
         KMemoryRegionAttr_LinearMapped);
-constexpr auto KMemoryRegionType_DramKernelInitPt =
+constexpr inline auto KMemoryRegionType_DramKernelInitPt =
     KMemoryRegionType_DramKernelBase.DeriveSparse(0, 4, 3).SetAttribute(
         KMemoryRegionAttr_LinearMapped);
 static_assert(KMemoryRegionType_DramKernelCode.GetValue() ==
@@ -181,32 +187,40 @@ static_assert(KMemoryRegionType_DramKernelInitPt.GetValue() ==
               (0x44E | KMemoryRegionAttr_CarveoutProtected | KMemoryRegionAttr_NoUserMap |
                KMemoryRegionAttr_LinearMapped));
 
-constexpr auto KMemoryRegionType_DramReservedEarly =
+constexpr inline auto KMemoryRegionType_DramKernelSecureAppletMemory =
+    KMemoryRegionType_DramKernelBase.DeriveSparse(1, 3, 0).SetAttribute(
+        KMemoryRegionAttr_LinearMapped);
+static_assert(KMemoryRegionType_DramKernelSecureAppletMemory.GetValue() ==
+              (0x18E | KMemoryRegionAttr_CarveoutProtected | KMemoryRegionAttr_NoUserMap |
+               KMemoryRegionAttr_LinearMapped));
+
+constexpr inline auto KMemoryRegionType_DramReservedEarly =
     KMemoryRegionType_DramReservedBase.DeriveAttribute(KMemoryRegionAttr_NoUserMap);
 static_assert(KMemoryRegionType_DramReservedEarly.GetValue() ==
               (0x16 | KMemoryRegionAttr_NoUserMap));
 
-constexpr auto KMemoryRegionType_KernelTraceBuffer =
+constexpr inline auto KMemoryRegionType_KernelTraceBuffer =
     KMemoryRegionType_DramReservedBase.DeriveSparse(0, 3, 0)
         .SetAttribute(KMemoryRegionAttr_LinearMapped)
         .SetAttribute(KMemoryRegionAttr_UserReadOnly);
-constexpr auto KMemoryRegionType_OnMemoryBootImage =
+constexpr inline auto KMemoryRegionType_OnMemoryBootImage =
     KMemoryRegionType_DramReservedBase.DeriveSparse(0, 3, 1);
-constexpr auto KMemoryRegionType_DTB = KMemoryRegionType_DramReservedBase.DeriveSparse(0, 3, 2);
+constexpr inline auto KMemoryRegionType_DTB =
+    KMemoryRegionType_DramReservedBase.DeriveSparse(0, 3, 2);
 static_assert(KMemoryRegionType_KernelTraceBuffer.GetValue() ==
               (0xD6 | KMemoryRegionAttr_LinearMapped | KMemoryRegionAttr_UserReadOnly));
 static_assert(KMemoryRegionType_OnMemoryBootImage.GetValue() == 0x156);
 static_assert(KMemoryRegionType_DTB.GetValue() == 0x256);
 
-constexpr auto KMemoryRegionType_DramPoolPartition =
+constexpr inline auto KMemoryRegionType_DramPoolPartition =
     KMemoryRegionType_DramHeapBase.DeriveAttribute(KMemoryRegionAttr_NoUserMap);
 static_assert(KMemoryRegionType_DramPoolPartition.GetValue() ==
               (0x26 | KMemoryRegionAttr_LinearMapped | KMemoryRegionAttr_NoUserMap));
 
-constexpr auto KMemoryRegionType_DramPoolManagement =
+constexpr inline auto KMemoryRegionType_DramPoolManagement =
     KMemoryRegionType_DramPoolPartition.DeriveTransition(0, 2).DeriveTransition().SetAttribute(
         KMemoryRegionAttr_CarveoutProtected);
-constexpr auto KMemoryRegionType_DramUserPool =
+constexpr inline auto KMemoryRegionType_DramUserPool =
     KMemoryRegionType_DramPoolPartition.DeriveTransition(1, 2).DeriveTransition();
 static_assert(KMemoryRegionType_DramPoolManagement.GetValue() ==
               (0x166 | KMemoryRegionAttr_LinearMapped | KMemoryRegionAttr_NoUserMap |
@@ -214,11 +228,13 @@ static_assert(KMemoryRegionType_DramPoolManagement.GetValue() ==
 static_assert(KMemoryRegionType_DramUserPool.GetValue() ==
               (0x1A6 | KMemoryRegionAttr_LinearMapped | KMemoryRegionAttr_NoUserMap));
 
-constexpr auto KMemoryRegionType_DramApplicationPool = KMemoryRegionType_DramUserPool.Derive(4, 0);
-constexpr auto KMemoryRegionType_DramAppletPool = KMemoryRegionType_DramUserPool.Derive(4, 1);
-constexpr auto KMemoryRegionType_DramSystemNonSecurePool =
+constexpr inline auto KMemoryRegionType_DramApplicationPool =
+    KMemoryRegionType_DramUserPool.Derive(4, 0);
+constexpr inline auto KMemoryRegionType_DramAppletPool =
+    KMemoryRegionType_DramUserPool.Derive(4, 1);
+constexpr inline auto KMemoryRegionType_DramSystemNonSecurePool =
     KMemoryRegionType_DramUserPool.Derive(4, 2);
-constexpr auto KMemoryRegionType_DramSystemPool =
+constexpr inline auto KMemoryRegionType_DramSystemPool =
     KMemoryRegionType_DramUserPool.Derive(4, 3).SetAttribute(KMemoryRegionAttr_CarveoutProtected);
 static_assert(KMemoryRegionType_DramApplicationPool.GetValue() ==
               (0x7A6 | KMemoryRegionAttr_LinearMapped | KMemoryRegionAttr_NoUserMap));
@@ -230,50 +246,55 @@ static_assert(KMemoryRegionType_DramSystemPool.GetValue() ==
               (0x13A6 | KMemoryRegionAttr_LinearMapped | KMemoryRegionAttr_NoUserMap |
                KMemoryRegionAttr_CarveoutProtected));
 
-constexpr auto KMemoryRegionType_VirtualDramHeapBase = KMemoryRegionType_Dram.DeriveSparse(1, 3, 0);
-constexpr auto KMemoryRegionType_VirtualDramKernelPtHeap =
+constexpr inline auto KMemoryRegionType_VirtualDramHeapBase =
+    KMemoryRegionType_Dram.DeriveSparse(1, 3, 0);
+constexpr inline auto KMemoryRegionType_VirtualDramKernelPtHeap =
     KMemoryRegionType_Dram.DeriveSparse(1, 3, 1);
-constexpr auto KMemoryRegionType_VirtualDramKernelTraceBuffer =
+constexpr inline auto KMemoryRegionType_VirtualDramKernelTraceBuffer =
     KMemoryRegionType_Dram.DeriveSparse(1, 3, 2);
 static_assert(KMemoryRegionType_VirtualDramHeapBase.GetValue() == 0x1A);
 static_assert(KMemoryRegionType_VirtualDramKernelPtHeap.GetValue() == 0x2A);
 static_assert(KMemoryRegionType_VirtualDramKernelTraceBuffer.GetValue() == 0x4A);
 
 // UNUSED: .DeriveSparse(2, 2, 0);
-constexpr auto KMemoryRegionType_VirtualDramUnknownDebug =
+constexpr inline auto KMemoryRegionType_VirtualDramUnknownDebug =
     KMemoryRegionType_Dram.DeriveSparse(2, 2, 1);
 static_assert(KMemoryRegionType_VirtualDramUnknownDebug.GetValue() == (0x52));
 
-constexpr auto KMemoryRegionType_VirtualDramKernelInitPt =
+constexpr inline auto KMemoryRegionType_VirtualDramKernelSecureAppletMemory =
+    KMemoryRegionType_Dram.DeriveSparse(3, 1, 0);
+static_assert(KMemoryRegionType_VirtualDramKernelSecureAppletMemory.GetValue() == (0x62));
+
+constexpr inline auto KMemoryRegionType_VirtualDramKernelInitPt =
     KMemoryRegionType_VirtualDramHeapBase.Derive(3, 0);
-constexpr auto KMemoryRegionType_VirtualDramPoolManagement =
+constexpr inline auto KMemoryRegionType_VirtualDramPoolManagement =
     KMemoryRegionType_VirtualDramHeapBase.Derive(3, 1);
-constexpr auto KMemoryRegionType_VirtualDramUserPool =
+constexpr inline auto KMemoryRegionType_VirtualDramUserPool =
     KMemoryRegionType_VirtualDramHeapBase.Derive(3, 2);
 static_assert(KMemoryRegionType_VirtualDramKernelInitPt.GetValue() == 0x19A);
 static_assert(KMemoryRegionType_VirtualDramPoolManagement.GetValue() == 0x29A);
 static_assert(KMemoryRegionType_VirtualDramUserPool.GetValue() == 0x31A);
 
-// NOTE: For unknown reason, the pools are derived out-of-order here. It's worth eventually trying
-// to understand why Nintendo made this choice.
+// NOTE: For unknown reason, the pools are derived out-of-order here.
+// It's worth eventually trying to understand why Nintendo made this choice.
 // UNUSED: .Derive(6, 0);
 // UNUSED: .Derive(6, 1);
-constexpr auto KMemoryRegionType_VirtualDramAppletPool =
+constexpr inline auto KMemoryRegionType_VirtualDramAppletPool =
     KMemoryRegionType_VirtualDramUserPool.Derive(6, 2);
-constexpr auto KMemoryRegionType_VirtualDramApplicationPool =
+constexpr inline auto KMemoryRegionType_VirtualDramApplicationPool =
     KMemoryRegionType_VirtualDramUserPool.Derive(6, 3);
-constexpr auto KMemoryRegionType_VirtualDramSystemNonSecurePool =
+constexpr inline auto KMemoryRegionType_VirtualDramSystemNonSecurePool =
     KMemoryRegionType_VirtualDramUserPool.Derive(6, 4);
-constexpr auto KMemoryRegionType_VirtualDramSystemPool =
+constexpr inline auto KMemoryRegionType_VirtualDramSystemPool =
     KMemoryRegionType_VirtualDramUserPool.Derive(6, 5);
 static_assert(KMemoryRegionType_VirtualDramAppletPool.GetValue() == 0x1B1A);
 static_assert(KMemoryRegionType_VirtualDramApplicationPool.GetValue() == 0x271A);
 static_assert(KMemoryRegionType_VirtualDramSystemNonSecurePool.GetValue() == 0x2B1A);
 static_assert(KMemoryRegionType_VirtualDramSystemPool.GetValue() == 0x331A);
 
-constexpr auto KMemoryRegionType_ArchDeviceBase =
+constexpr inline auto KMemoryRegionType_ArchDeviceBase =
     KMemoryRegionType_Kernel.DeriveTransition(0, 1).SetSparseOnly();
-constexpr auto KMemoryRegionType_BoardDeviceBase =
+constexpr inline auto KMemoryRegionType_BoardDeviceBase =
     KMemoryRegionType_Kernel.DeriveTransition(0, 2).SetDenseOnly();
 static_assert(KMemoryRegionType_ArchDeviceBase.GetValue() == 0x5);
 static_assert(KMemoryRegionType_BoardDeviceBase.GetValue() == 0x5);
@@ -284,7 +305,7 @@ static_assert(KMemoryRegionType_BoardDeviceBase.GetValue() == 0x5);
 #error "Unimplemented"
 #else
 // Default to no architecture devices.
-constexpr auto NumArchitectureDeviceRegions = 0;
+constexpr inline auto NumArchitectureDeviceRegions = 0;
 #endif
 static_assert(NumArchitectureDeviceRegions >= 0);
 
@@ -292,34 +313,35 @@ static_assert(NumArchitectureDeviceRegions >= 0);
 #include "core/hle/kernel/board/nintendo/nx/k_memory_region_device_types.inc"
 #else
 // Default to no board devices.
-constexpr auto NumBoardDeviceRegions = 0;
+constexpr inline auto NumBoardDeviceRegions = 0;
 #endif
 static_assert(NumBoardDeviceRegions >= 0);
 
-constexpr auto KMemoryRegionType_KernelCode = KMemoryRegionType_Kernel.DeriveSparse(1, 4, 0);
-constexpr auto KMemoryRegionType_KernelStack = KMemoryRegionType_Kernel.DeriveSparse(1, 4, 1);
-constexpr auto KMemoryRegionType_KernelMisc = KMemoryRegionType_Kernel.DeriveSparse(1, 4, 2);
-constexpr auto KMemoryRegionType_KernelSlab = KMemoryRegionType_Kernel.DeriveSparse(1, 4, 3);
+constexpr inline auto KMemoryRegionType_KernelCode = KMemoryRegionType_Kernel.DeriveSparse(1, 4, 0);
+constexpr inline auto KMemoryRegionType_KernelStack =
+    KMemoryRegionType_Kernel.DeriveSparse(1, 4, 1);
+constexpr inline auto KMemoryRegionType_KernelMisc = KMemoryRegionType_Kernel.DeriveSparse(1, 4, 2);
+constexpr inline auto KMemoryRegionType_KernelSlab = KMemoryRegionType_Kernel.DeriveSparse(1, 4, 3);
 static_assert(KMemoryRegionType_KernelCode.GetValue() == 0x19);
 static_assert(KMemoryRegionType_KernelStack.GetValue() == 0x29);
 static_assert(KMemoryRegionType_KernelMisc.GetValue() == 0x49);
 static_assert(KMemoryRegionType_KernelSlab.GetValue() == 0x89);
 
-constexpr auto KMemoryRegionType_KernelMiscDerivedBase =
+constexpr inline auto KMemoryRegionType_KernelMiscDerivedBase =
     KMemoryRegionType_KernelMisc.DeriveTransition();
 static_assert(KMemoryRegionType_KernelMiscDerivedBase.GetValue() == 0x149);
 
 // UNUSED: .Derive(7, 0);
-constexpr auto KMemoryRegionType_KernelMiscMainStack =
+constexpr inline auto KMemoryRegionType_KernelMiscMainStack =
     KMemoryRegionType_KernelMiscDerivedBase.Derive(7, 1);
-constexpr auto KMemoryRegionType_KernelMiscMappedDevice =
+constexpr inline auto KMemoryRegionType_KernelMiscMappedDevice =
     KMemoryRegionType_KernelMiscDerivedBase.Derive(7, 2);
-constexpr auto KMemoryRegionType_KernelMiscExceptionStack =
+constexpr inline auto KMemoryRegionType_KernelMiscExceptionStack =
     KMemoryRegionType_KernelMiscDerivedBase.Derive(7, 3);
-constexpr auto KMemoryRegionType_KernelMiscUnknownDebug =
+constexpr inline auto KMemoryRegionType_KernelMiscUnknownDebug =
     KMemoryRegionType_KernelMiscDerivedBase.Derive(7, 4);
 // UNUSED: .Derive(7, 5);
-constexpr auto KMemoryRegionType_KernelMiscIdleStack =
+constexpr inline auto KMemoryRegionType_KernelMiscIdleStack =
     KMemoryRegionType_KernelMiscDerivedBase.Derive(7, 6);
 static_assert(KMemoryRegionType_KernelMiscMainStack.GetValue() == 0xB49);
 static_assert(KMemoryRegionType_KernelMiscMappedDevice.GetValue() == 0xD49);
@@ -327,7 +349,8 @@ static_assert(KMemoryRegionType_KernelMiscExceptionStack.GetValue() == 0x1349);
 static_assert(KMemoryRegionType_KernelMiscUnknownDebug.GetValue() == 0x1549);
 static_assert(KMemoryRegionType_KernelMiscIdleStack.GetValue() == 0x2349);
 
-constexpr auto KMemoryRegionType_KernelTemp = KMemoryRegionType_Kernel.Advance(2).Derive(2, 0);
+constexpr inline auto KMemoryRegionType_KernelTemp =
+    KMemoryRegionType_Kernel.Advance(2).Derive(2, 0);
 static_assert(KMemoryRegionType_KernelTemp.GetValue() == 0x31);
 
 constexpr KMemoryRegionType GetTypeForVirtualLinearMapping(u32 type_id) {
@@ -335,6 +358,8 @@ constexpr KMemoryRegionType GetTypeForVirtualLinearMapping(u32 type_id) {
         return KMemoryRegionType_VirtualDramKernelTraceBuffer;
     } else if (KMemoryRegionType_DramKernelPtHeap.IsAncestorOf(type_id)) {
         return KMemoryRegionType_VirtualDramKernelPtHeap;
+    } else if (KMemoryRegionType_DramKernelSecureAppletMemory.IsAncestorOf(type_id)) {
+        return KMemoryRegionType_VirtualDramKernelSecureAppletMemory;
     } else if ((type_id | KMemoryRegionAttr_ShouldKernelMap) == type_id) {
         return KMemoryRegionType_VirtualDramUnknownDebug;
     } else {
diff --git a/src/core/hle/kernel/k_page_bitmap.h b/src/core/hle/kernel/k_page_bitmap.h
index c97b3dc0b..0ff987732 100644
--- a/src/core/hle/kernel/k_page_bitmap.h
+++ b/src/core/hle/kernel/k_page_bitmap.h
@@ -16,107 +16,126 @@
 namespace Kernel {
 
 class KPageBitmap {
-private:
+public:
     class RandomBitGenerator {
-    private:
-        Common::TinyMT rng{};
-        u32 entropy{};
-        u32 bits_available{};
+    public:
+        RandomBitGenerator() {
+            m_rng.Initialize(static_cast<u32>(KSystemControl::GenerateRandomU64()));
+        }
+
+        u64 SelectRandomBit(u64 bitmap) {
+            u64 selected = 0;
+
+            for (size_t cur_num_bits = Common::BitSize<decltype(bitmap)>() / 2; cur_num_bits != 0;
+                 cur_num_bits /= 2) {
+                const u64 high = (bitmap >> cur_num_bits);
+                const u64 low = (bitmap & (~(UINT64_C(0xFFFFFFFFFFFFFFFF) << cur_num_bits)));
+
+                // Choose high if we have high and (don't have low or select high randomly).
+                if (high && (low == 0 || this->GenerateRandomBit())) {
+                    bitmap = high;
+                    selected += cur_num_bits;
+                } else {
+                    bitmap = low;
+                    selected += 0;
+                }
+            }
+
+            return selected;
+        }
+
+        u64 GenerateRandom(u64 max) {
+            // Determine the number of bits we need.
+            const u64 bits_needed = 1 + (Common::BitSize<decltype(max)>() - std::countl_zero(max));
+
+            // Generate a random value of the desired bitwidth.
+            const u64 rnd = this->GenerateRandomBits(static_cast<u32>(bits_needed));
+
+            // Adjust the value to be in range.
+            return rnd - ((rnd / max) * max);
+        }
 
     private:
         void RefreshEntropy() {
-            entropy = rng.GenerateRandomU32();
-            bits_available = static_cast<u32>(Common::BitSize<decltype(entropy)>());
+            m_entropy = m_rng.GenerateRandomU32();
+            m_bits_available = static_cast<u32>(Common::BitSize<decltype(m_entropy)>());
         }
 
         bool GenerateRandomBit() {
-            if (bits_available == 0) {
+            if (m_bits_available == 0) {
                 this->RefreshEntropy();
             }
 
-            const bool rnd_bit = (entropy & 1) != 0;
-            entropy >>= 1;
-            --bits_available;
+            const bool rnd_bit = (m_entropy & 1) != 0;
+            m_entropy >>= 1;
+            --m_bits_available;
             return rnd_bit;
         }
 
-    public:
-        RandomBitGenerator() {
-            rng.Initialize(static_cast<u32>(KSystemControl::GenerateRandomU64()));
-        }
+        u64 GenerateRandomBits(u32 num_bits) {
+            u64 result = 0;
 
-        std::size_t SelectRandomBit(u64 bitmap) {
-            u64 selected = 0;
+            // Iteratively add random bits to our result.
+            while (num_bits > 0) {
+                // Ensure we have random bits to take from.
+                if (m_bits_available == 0) {
+                    this->RefreshEntropy();
+                }
 
-            u64 cur_num_bits = Common::BitSize<decltype(bitmap)>() / 2;
-            u64 cur_mask = (1ULL << cur_num_bits) - 1;
+                // Determine how many bits to take this round.
+                const auto cur_bits = std::min(num_bits, m_bits_available);
 
-            while (cur_num_bits) {
-                const u64 low = (bitmap >> 0) & cur_mask;
-                const u64 high = (bitmap >> cur_num_bits) & cur_mask;
+                // Generate mask for our current bits.
+                const u64 mask = (static_cast<u64>(1) << cur_bits) - 1;
 
-                bool choose_low;
-                if (high == 0) {
-                    // If only low val is set, choose low.
-                    choose_low = true;
-                } else if (low == 0) {
-                    // If only high val is set, choose high.
-                    choose_low = false;
-                } else {
-                    // If both are set, choose random.
-                    choose_low = this->GenerateRandomBit();
-                }
+                // Add bits to output from our entropy.
+                result <<= cur_bits;
+                result |= (m_entropy & mask);
 
-                // If we chose low, proceed with low.
-                if (choose_low) {
-                    bitmap = low;
-                    selected += 0;
-                } else {
-                    bitmap = high;
-                    selected += cur_num_bits;
-                }
+                // Remove bits from our entropy.
+                m_entropy >>= cur_bits;
+                m_bits_available -= cur_bits;
 
-                // Proceed.
-                cur_num_bits /= 2;
-                cur_mask >>= cur_num_bits;
+                // Advance.
+                num_bits -= cur_bits;
             }
 
-            return selected;
+            return result;
         }
+
+    private:
+        Common::TinyMT m_rng;
+        u32 m_entropy{};
+        u32 m_bits_available{};
     };
 
 public:
-    static constexpr std::size_t MaxDepth = 4;
-
-private:
-    std::array<u64*, MaxDepth> bit_storages{};
-    RandomBitGenerator rng{};
-    std::size_t num_bits{};
-    std::size_t used_depths{};
+    static constexpr size_t MaxDepth = 4;
 
 public:
     KPageBitmap() = default;
 
-    constexpr std::size_t GetNumBits() const {
-        return num_bits;
+    constexpr size_t GetNumBits() const {
+        return m_num_bits;
     }
     constexpr s32 GetHighestDepthIndex() const {
-        return static_cast<s32>(used_depths) - 1;
+        return static_cast<s32>(m_used_depths) - 1;
     }
 
-    u64* Initialize(u64* storage, std::size_t size) {
+    u64* Initialize(u64* storage, size_t size) {
         // Initially, everything is un-set.
-        num_bits = 0;
+        m_num_bits = 0;
 
         // Calculate the needed bitmap depth.
-        used_depths = static_cast<std::size_t>(GetRequiredDepth(size));
-        ASSERT(used_depths <= MaxDepth);
+        m_used_depths = static_cast<size_t>(GetRequiredDepth(size));
+        ASSERT(m_used_depths <= MaxDepth);
 
         // Set the bitmap pointers.
         for (s32 depth = this->GetHighestDepthIndex(); depth >= 0; depth--) {
-            bit_storages[depth] = storage;
+            m_bit_storages[depth] = storage;
             size = Common::AlignUp(size, Common::BitSize<u64>()) / Common::BitSize<u64>();
             storage += size;
+            m_end_storages[depth] = storage;
         }
 
         return storage;
@@ -128,19 +147,19 @@ public:
 
         if (random) {
             do {
-                const u64 v = bit_storages[depth][offset];
+                const u64 v = m_bit_storages[depth][offset];
                 if (v == 0) {
                     // If depth is bigger than zero, then a previous level indicated a block was
                     // free.
                     ASSERT(depth == 0);
                     return -1;
                 }
-                offset = offset * Common::BitSize<u64>() + rng.SelectRandomBit(v);
+                offset = offset * Common::BitSize<u64>() + m_rng.SelectRandomBit(v);
                 ++depth;
-            } while (depth < static_cast<s32>(used_depths));
+            } while (depth < static_cast<s32>(m_used_depths));
         } else {
             do {
-                const u64 v = bit_storages[depth][offset];
+                const u64 v = m_bit_storages[depth][offset];
                 if (v == 0) {
                     // If depth is bigger than zero, then a previous level indicated a block was
                     // free.
@@ -149,28 +168,69 @@ public:
                 }
                 offset = offset * Common::BitSize<u64>() + std::countr_zero(v);
                 ++depth;
-            } while (depth < static_cast<s32>(used_depths));
+            } while (depth < static_cast<s32>(m_used_depths));
         }
 
         return static_cast<s64>(offset);
     }
 
-    void SetBit(std::size_t offset) {
+    s64 FindFreeRange(size_t count) {
+        // Check that it is possible to find a range.
+        const u64* const storage_start = m_bit_storages[m_used_depths - 1];
+        const u64* const storage_end = m_end_storages[m_used_depths - 1];
+
+        // If we don't have a storage to iterate (or want more blocks than fit in a single storage),
+        // we can't find a free range.
+        if (!(storage_start < storage_end && count <= Common::BitSize<u64>())) {
+            return -1;
+        }
+
+        // Walk the storages to select a random free range.
+        const size_t options_per_storage = std::max<size_t>(Common::BitSize<u64>() / count, 1);
+        const size_t num_entries = std::max<size_t>(storage_end - storage_start, 1);
+
+        const u64 free_mask = (static_cast<u64>(1) << count) - 1;
+
+        size_t num_valid_options = 0;
+        s64 chosen_offset = -1;
+        for (size_t storage_index = 0; storage_index < num_entries; ++storage_index) {
+            u64 storage = storage_start[storage_index];
+            for (size_t option = 0; option < options_per_storage; ++option) {
+                if ((storage & free_mask) == free_mask) {
+                    // We've found a new valid option.
+                    ++num_valid_options;
+
+                    // Select the Kth valid option with probability 1/K. This leads to an overall
+                    // uniform distribution.
+                    if (num_valid_options == 1 || m_rng.GenerateRandom(num_valid_options) == 0) {
+                        // This is our first option, so select it.
+                        chosen_offset = storage_index * Common::BitSize<u64>() + option * count;
+                    }
+                }
+                storage >>= count;
+            }
+        }
+
+        // Return the random offset we chose.*/
+        return chosen_offset;
+    }
+
+    void SetBit(size_t offset) {
         this->SetBit(this->GetHighestDepthIndex(), offset);
-        num_bits++;
+        m_num_bits++;
     }
 
-    void ClearBit(std::size_t offset) {
+    void ClearBit(size_t offset) {
         this->ClearBit(this->GetHighestDepthIndex(), offset);
-        num_bits--;
+        m_num_bits--;
     }
 
-    bool ClearRange(std::size_t offset, std::size_t count) {
+    bool ClearRange(size_t offset, size_t count) {
         s32 depth = this->GetHighestDepthIndex();
-        u64* bits = bit_storages[depth];
-        std::size_t bit_ind = offset / Common::BitSize<u64>();
-        if (count < Common::BitSize<u64>()) {
-            const std::size_t shift = offset % Common::BitSize<u64>();
+        u64* bits = m_bit_storages[depth];
+        size_t bit_ind = offset / Common::BitSize<u64>();
+        if (count < Common::BitSize<u64>()) [[likely]] {
+            const size_t shift = offset % Common::BitSize<u64>();
             ASSERT(shift + count <= Common::BitSize<u64>());
             // Check that all the bits are set.
             const u64 mask = ((u64(1) << count) - 1) << shift;
@@ -189,8 +249,8 @@ public:
             ASSERT(offset % Common::BitSize<u64>() == 0);
             ASSERT(count % Common::BitSize<u64>() == 0);
             // Check that all the bits are set.
-            std::size_t remaining = count;
-            std::size_t i = 0;
+            size_t remaining = count;
+            size_t i = 0;
             do {
                 if (bits[bit_ind + i++] != ~u64(0)) {
                     return false;
@@ -209,18 +269,18 @@ public:
             } while (remaining > 0);
         }
 
-        num_bits -= count;
+        m_num_bits -= count;
         return true;
     }
 
 private:
-    void SetBit(s32 depth, std::size_t offset) {
+    void SetBit(s32 depth, size_t offset) {
         while (depth >= 0) {
-            std::size_t ind = offset / Common::BitSize<u64>();
-            std::size_t which = offset % Common::BitSize<u64>();
+            size_t ind = offset / Common::BitSize<u64>();
+            size_t which = offset % Common::BitSize<u64>();
             const u64 mask = u64(1) << which;
 
-            u64* bit = std::addressof(bit_storages[depth][ind]);
+            u64* bit = std::addressof(m_bit_storages[depth][ind]);
             u64 v = *bit;
             ASSERT((v & mask) == 0);
             *bit = v | mask;
@@ -232,13 +292,13 @@ private:
         }
     }
 
-    void ClearBit(s32 depth, std::size_t offset) {
+    void ClearBit(s32 depth, size_t offset) {
         while (depth >= 0) {
-            std::size_t ind = offset / Common::BitSize<u64>();
-            std::size_t which = offset % Common::BitSize<u64>();
+            size_t ind = offset / Common::BitSize<u64>();
+            size_t which = offset % Common::BitSize<u64>();
             const u64 mask = u64(1) << which;
 
-            u64* bit = std::addressof(bit_storages[depth][ind]);
+            u64* bit = std::addressof(m_bit_storages[depth][ind]);
             u64 v = *bit;
             ASSERT((v & mask) != 0);
             v &= ~mask;
@@ -252,7 +312,7 @@ private:
     }
 
 private:
-    static constexpr s32 GetRequiredDepth(std::size_t region_size) {
+    static constexpr s32 GetRequiredDepth(size_t region_size) {
         s32 depth = 0;
         while (true) {
             region_size /= Common::BitSize<u64>();
@@ -264,8 +324,8 @@ private:
     }
 
 public:
-    static constexpr std::size_t CalculateManagementOverheadSize(std::size_t region_size) {
-        std::size_t overhead_bits = 0;
+    static constexpr size_t CalculateManagementOverheadSize(size_t region_size) {
+        size_t overhead_bits = 0;
         for (s32 depth = GetRequiredDepth(region_size) - 1; depth >= 0; depth--) {
             region_size =
                 Common::AlignUp(region_size, Common::BitSize<u64>()) / Common::BitSize<u64>();
@@ -273,6 +333,13 @@ public:
         }
         return overhead_bits * sizeof(u64);
     }
+
+private:
+    std::array<u64*, MaxDepth> m_bit_storages{};
+    std::array<u64*, MaxDepth> m_end_storages{};
+    RandomBitGenerator m_rng;
+    size_t m_num_bits{};
+    size_t m_used_depths{};
 };
 
 } // namespace Kernel
diff --git a/src/core/hle/kernel/k_page_buffer.h b/src/core/hle/kernel/k_page_buffer.h
index aef06e213..cfedaae61 100644
--- a/src/core/hle/kernel/k_page_buffer.h
+++ b/src/core/hle/kernel/k_page_buffer.h
@@ -11,6 +11,16 @@
 
 namespace Kernel {
 
+class KernelCore;
+
+class KPageBufferSlabHeap : protected impl::KSlabHeapImpl {
+public:
+    static constexpr size_t BufferSize = PageSize;
+
+public:
+    void Initialize(Core::System& system);
+};
+
 class KPageBuffer final : public KSlabAllocated<KPageBuffer> {
 public:
     explicit KPageBuffer(KernelCore&) {}
@@ -21,8 +31,6 @@ public:
 private:
     [[maybe_unused]] alignas(PageSize) std::array<u8, PageSize> m_buffer{};
 };
-
-static_assert(sizeof(KPageBuffer) == PageSize);
-static_assert(alignof(KPageBuffer) == PageSize);
+static_assert(sizeof(KPageBuffer) == KPageBufferSlabHeap::BufferSize);
 
 } // namespace Kernel
diff --git a/src/core/hle/kernel/k_page_group.h b/src/core/hle/kernel/k_page_group.h
index 968753992..316f172f2 100644
--- a/src/core/hle/kernel/k_page_group.h
+++ b/src/core/hle/kernel/k_page_group.h
@@ -5,6 +5,7 @@
 
 #include <list>
 
+#include "common/alignment.h"
 #include "common/assert.h"
 #include "common/common_types.h"
 #include "core/hle/kernel/memory_types.h"
@@ -12,6 +13,89 @@
 
 namespace Kernel {
 
+class KPageGroup;
+
+class KBlockInfo {
+private:
+    friend class KPageGroup;
+
+public:
+    constexpr KBlockInfo() = default;
+
+    constexpr void Initialize(PAddr addr, size_t np) {
+        ASSERT(Common::IsAligned(addr, PageSize));
+        ASSERT(static_cast<u32>(np) == np);
+
+        m_page_index = static_cast<u32>(addr) / PageSize;
+        m_num_pages = static_cast<u32>(np);
+    }
+
+    constexpr PAddr GetAddress() const {
+        return m_page_index * PageSize;
+    }
+    constexpr size_t GetNumPages() const {
+        return m_num_pages;
+    }
+    constexpr size_t GetSize() const {
+        return this->GetNumPages() * PageSize;
+    }
+    constexpr PAddr GetEndAddress() const {
+        return (m_page_index + m_num_pages) * PageSize;
+    }
+    constexpr PAddr GetLastAddress() const {
+        return this->GetEndAddress() - 1;
+    }
+
+    constexpr KBlockInfo* GetNext() const {
+        return m_next;
+    }
+
+    constexpr bool IsEquivalentTo(const KBlockInfo& rhs) const {
+        return m_page_index == rhs.m_page_index && m_num_pages == rhs.m_num_pages;
+    }
+
+    constexpr bool operator==(const KBlockInfo& rhs) const {
+        return this->IsEquivalentTo(rhs);
+    }
+
+    constexpr bool operator!=(const KBlockInfo& rhs) const {
+        return !(*this == rhs);
+    }
+
+    constexpr bool IsStrictlyBefore(PAddr addr) const {
+        const PAddr end = this->GetEndAddress();
+
+        if (m_page_index != 0 && end == 0) {
+            return false;
+        }
+
+        return end < addr;
+    }
+
+    constexpr bool operator<(PAddr addr) const {
+        return this->IsStrictlyBefore(addr);
+    }
+
+    constexpr bool TryConcatenate(PAddr addr, size_t np) {
+        if (addr != 0 && addr == this->GetEndAddress()) {
+            m_num_pages += static_cast<u32>(np);
+            return true;
+        }
+        return false;
+    }
+
+private:
+    constexpr void SetNext(KBlockInfo* next) {
+        m_next = next;
+    }
+
+private:
+    KBlockInfo* m_next{};
+    u32 m_page_index{};
+    u32 m_num_pages{};
+};
+static_assert(sizeof(KBlockInfo) <= 0x10);
+
 class KPageGroup final {
 public:
     class Node final {
@@ -92,6 +176,8 @@ public:
         return nodes.empty();
     }
 
+    void Finalize() {}
+
 private:
     std::list<Node> nodes;
 };
diff --git a/src/core/hle/kernel/k_page_heap.cpp b/src/core/hle/kernel/k_page_heap.cpp
index 5ede60168..7b02c7d8b 100644
--- a/src/core/hle/kernel/k_page_heap.cpp
+++ b/src/core/hle/kernel/k_page_heap.cpp
@@ -44,11 +44,11 @@ size_t KPageHeap::GetNumFreePages() const {
     return num_free;
 }
 
-PAddr KPageHeap::AllocateBlock(s32 index, bool random) {
+PAddr KPageHeap::AllocateByLinearSearch(s32 index) {
     const size_t needed_size = m_blocks[index].GetSize();
 
     for (s32 i = index; i < static_cast<s32>(m_num_blocks); i++) {
-        if (const PAddr addr = m_blocks[i].PopBlock(random); addr != 0) {
+        if (const PAddr addr = m_blocks[i].PopBlock(false); addr != 0) {
             if (const size_t allocated_size = m_blocks[i].GetSize(); allocated_size > needed_size) {
                 this->Free(addr + needed_size, (allocated_size - needed_size) / PageSize);
             }
@@ -59,6 +59,88 @@ PAddr KPageHeap::AllocateBlock(s32 index, bool random) {
     return 0;
 }
 
+PAddr KPageHeap::AllocateByRandom(s32 index, size_t num_pages, size_t align_pages) {
+    // Get the size and required alignment.
+    const size_t needed_size = num_pages * PageSize;
+    const size_t align_size = align_pages * PageSize;
+
+    // Determine meta-alignment of our desired alignment size.
+    const size_t align_shift = std::countr_zero(align_size);
+
+    // Decide on a block to allocate from.
+    constexpr size_t MinimumPossibleAlignmentsForRandomAllocation = 4;
+    {
+        // By default, we'll want to look at all blocks larger than our current one.
+        s32 max_blocks = static_cast<s32>(m_num_blocks);
+
+        // Determine the maximum block we should try to allocate from.
+        size_t possible_alignments = 0;
+        for (s32 i = index; i < max_blocks; ++i) {
+            // Add the possible alignments from blocks at the current size.
+            possible_alignments += (1 + ((m_blocks[i].GetSize() - needed_size) >> align_shift)) *
+                                   m_blocks[i].GetNumFreeBlocks();
+
+            // If there are enough possible alignments, we don't need to look at larger blocks.
+            if (possible_alignments >= MinimumPossibleAlignmentsForRandomAllocation) {
+                max_blocks = i + 1;
+                break;
+            }
+        }
+
+        // If we have any possible alignments which require a larger block, we need to pick one.
+        if (possible_alignments > 0 && index + 1 < max_blocks) {
+            // Select a random alignment from the possibilities.
+            const size_t rnd = m_rng.GenerateRandom(possible_alignments);
+
+            // Determine which block corresponds to the random alignment we chose.
+            possible_alignments = 0;
+            for (s32 i = index; i < max_blocks; ++i) {
+                // Add the possible alignments from blocks at the current size.
+                possible_alignments +=
+                    (1 + ((m_blocks[i].GetSize() - needed_size) >> align_shift)) *
+                    m_blocks[i].GetNumFreeBlocks();
+
+                // If the current block gets us to our random choice, use the current block.
+                if (rnd < possible_alignments) {
+                    index = i;
+                    break;
+                }
+            }
+        }
+    }
+
+    // Pop a block from the index we selected.
+    if (PAddr addr = m_blocks[index].PopBlock(true); addr != 0) {
+        // Determine how much size we have left over.
+        if (const size_t leftover_size = m_blocks[index].GetSize() - needed_size;
+            leftover_size > 0) {
+            // Determine how many valid alignments we can have.
+            const size_t possible_alignments = 1 + (leftover_size >> align_shift);
+
+            // Select a random valid alignment.
+            const size_t random_offset = m_rng.GenerateRandom(possible_alignments) << align_shift;
+
+            // Free memory before the random offset.
+            if (random_offset != 0) {
+                this->Free(addr, random_offset / PageSize);
+            }
+
+            // Advance our block by the random offset.
+            addr += random_offset;
+
+            // Free memory after our allocated block.
+            if (random_offset != leftover_size) {
+                this->Free(addr + needed_size, (leftover_size - random_offset) / PageSize);
+            }
+        }
+
+        // Return the block we allocated.
+        return addr;
+    }
+
+    return 0;
+}
+
 void KPageHeap::FreeBlock(PAddr block, s32 index) {
     do {
         block = m_blocks[index++].PushBlock(block);
diff --git a/src/core/hle/kernel/k_page_heap.h b/src/core/hle/kernel/k_page_heap.h
index 0917a8bed..9021edcf7 100644
--- a/src/core/hle/kernel/k_page_heap.h
+++ b/src/core/hle/kernel/k_page_heap.h
@@ -14,13 +14,9 @@
 
 namespace Kernel {
 
-class KPageHeap final {
+class KPageHeap {
 public:
-    YUZU_NON_COPYABLE(KPageHeap);
-    YUZU_NON_MOVEABLE(KPageHeap);
-
     KPageHeap() = default;
-    ~KPageHeap() = default;
 
     constexpr PAddr GetAddress() const {
         return m_heap_address;
@@ -57,7 +53,20 @@ public:
         m_initial_used_size = m_heap_size - free_size - reserved_size;
     }
 
-    PAddr AllocateBlock(s32 index, bool random);
+    PAddr AllocateBlock(s32 index, bool random) {
+        if (random) {
+            const size_t block_pages = m_blocks[index].GetNumPages();
+            return this->AllocateByRandom(index, block_pages, block_pages);
+        } else {
+            return this->AllocateByLinearSearch(index);
+        }
+    }
+
+    PAddr AllocateAligned(s32 index, size_t num_pages, size_t align_pages) {
+        // TODO: linear search support?
+        return this->AllocateByRandom(index, num_pages, align_pages);
+    }
+
     void Free(PAddr addr, size_t num_pages);
 
     static size_t CalculateManagementOverheadSize(size_t region_size) {
@@ -68,7 +77,7 @@ public:
     static constexpr s32 GetAlignedBlockIndex(size_t num_pages, size_t align_pages) {
         const size_t target_pages = std::max(num_pages, align_pages);
         for (size_t i = 0; i < NumMemoryBlockPageShifts; i++) {
-            if (target_pages <= (size_t(1) << MemoryBlockPageShifts[i]) / PageSize) {
+            if (target_pages <= (static_cast<size_t>(1) << MemoryBlockPageShifts[i]) / PageSize) {
                 return static_cast<s32>(i);
             }
         }
@@ -77,7 +86,7 @@ public:
 
     static constexpr s32 GetBlockIndex(size_t num_pages) {
         for (s32 i = static_cast<s32>(NumMemoryBlockPageShifts) - 1; i >= 0; i--) {
-            if (num_pages >= (size_t(1) << MemoryBlockPageShifts[i]) / PageSize) {
+            if (num_pages >= (static_cast<size_t>(1) << MemoryBlockPageShifts[i]) / PageSize) {
                 return i;
             }
         }
@@ -85,7 +94,7 @@ public:
     }
 
     static constexpr size_t GetBlockSize(size_t index) {
-        return size_t(1) << MemoryBlockPageShifts[index];
+        return static_cast<size_t>(1) << MemoryBlockPageShifts[index];
     }
 
     static constexpr size_t GetBlockNumPages(size_t index) {
@@ -93,13 +102,9 @@ public:
     }
 
 private:
-    class Block final {
+    class Block {
     public:
-        YUZU_NON_COPYABLE(Block);
-        YUZU_NON_MOVEABLE(Block);
-
         Block() = default;
-        ~Block() = default;
 
         constexpr size_t GetShift() const {
             return m_block_shift;
@@ -201,6 +206,9 @@ private:
     };
 
 private:
+    PAddr AllocateByLinearSearch(s32 index);
+    PAddr AllocateByRandom(s32 index, size_t num_pages, size_t align_pages);
+
     static size_t CalculateManagementOverheadSize(size_t region_size, const size_t* block_shifts,
                                                   size_t num_block_shifts);
 
@@ -209,7 +217,8 @@ private:
     size_t m_heap_size{};
     size_t m_initial_used_size{};
     size_t m_num_blocks{};
-    std::array<Block, NumMemoryBlockPageShifts> m_blocks{};
+    std::array<Block, NumMemoryBlockPageShifts> m_blocks;
+    KPageBitmap::RandomBitGenerator m_rng;
     std::vector<u64> m_management_data;
 };
 
diff --git a/src/core/hle/kernel/k_page_table.cpp b/src/core/hle/kernel/k_page_table.cpp
index 307e491cb..fab55a057 100644
--- a/src/core/hle/kernel/k_page_table.cpp
+++ b/src/core/hle/kernel/k_page_table.cpp
@@ -15,6 +15,7 @@
 #include "core/hle/kernel/k_resource_limit.h"
 #include "core/hle/kernel/k_scoped_resource_reservation.h"
 #include "core/hle/kernel/k_system_control.h"
+#include "core/hle/kernel/k_system_resource.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/svc_results.h"
 #include "core/memory.h"
@@ -23,6 +24,61 @@ namespace Kernel {
 
 namespace {
 
+class KScopedLightLockPair {
+    YUZU_NON_COPYABLE(KScopedLightLockPair);
+    YUZU_NON_MOVEABLE(KScopedLightLockPair);
+
+private:
+    KLightLock* m_lower;
+    KLightLock* m_upper;
+
+public:
+    KScopedLightLockPair(KLightLock& lhs, KLightLock& rhs) {
+        // Ensure our locks are in a consistent order.
+        if (std::addressof(lhs) <= std::addressof(rhs)) {
+            m_lower = std::addressof(lhs);
+            m_upper = std::addressof(rhs);
+        } else {
+            m_lower = std::addressof(rhs);
+            m_upper = std::addressof(lhs);
+        }
+
+        // Acquire both locks.
+        m_lower->Lock();
+        if (m_lower != m_upper) {
+            m_upper->Lock();
+        }
+    }
+
+    ~KScopedLightLockPair() {
+        // Unlock the upper lock.
+        if (m_upper != nullptr && m_upper != m_lower) {
+            m_upper->Unlock();
+        }
+
+        // Unlock the lower lock.
+        if (m_lower != nullptr) {
+            m_lower->Unlock();
+        }
+    }
+
+public:
+    // Utility.
+    void TryUnlockHalf(KLightLock& lock) {
+        // Only allow unlocking if the lock is half the pair.
+        if (m_lower != m_upper) {
+            // We want to be sure the lock is one we own.
+            if (m_lower == std::addressof(lock)) {
+                lock.Unlock();
+                m_lower = nullptr;
+            } else if (m_upper == std::addressof(lock)) {
+                lock.Unlock();
+                m_upper = nullptr;
+            }
+        }
+    }
+};
+
 using namespace Common::Literals;
 
 constexpr size_t GetAddressSpaceWidthFromType(FileSys::ProgramAddressSpaceType as_type) {
@@ -49,9 +105,10 @@ KPageTable::KPageTable(Core::System& system_)
 KPageTable::~KPageTable() = default;
 
 Result KPageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_type, bool enable_aslr,
-                                        VAddr code_addr, size_t code_size,
-                                        KMemoryBlockSlabManager* mem_block_slab_manager,
-                                        KMemoryManager::Pool pool) {
+                                        bool enable_das_merge, bool from_back,
+                                        KMemoryManager::Pool pool, VAddr code_addr,
+                                        size_t code_size, KSystemResource* system_resource,
+                                        KResourceLimit* resource_limit) {
 
     const auto GetSpaceStart = [this](KAddressSpaceInfo::Type type) {
         return KAddressSpaceInfo::GetAddressSpaceStart(m_address_space_width, type);
@@ -112,11 +169,13 @@ Result KPageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_type
 
     // Set other basic fields
     m_enable_aslr = enable_aslr;
-    m_enable_device_address_space_merge = false;
+    m_enable_device_address_space_merge = enable_das_merge;
     m_address_space_start = start;
     m_address_space_end = end;
     m_is_kernel = false;
-    m_memory_block_slab_manager = mem_block_slab_manager;
+    m_memory_block_slab_manager = system_resource->GetMemoryBlockSlabManagerPointer();
+    m_block_info_manager = system_resource->GetBlockInfoManagerPointer();
+    m_resource_limit = resource_limit;
 
     // Determine the region we can place our undetermineds in
     VAddr alloc_start{};
@@ -215,10 +274,22 @@ Result KPageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_type
         }
     }
 
-    // Set heap members
+    // Set heap and fill members.
     m_current_heap_end = m_heap_region_start;
     m_max_heap_size = 0;
-    m_max_physical_memory_size = 0;
+    m_mapped_physical_memory_size = 0;
+    m_mapped_unsafe_physical_memory = 0;
+    m_mapped_insecure_memory = 0;
+    m_mapped_ipc_server_memory = 0;
+
+    m_heap_fill_value = 0;
+    m_ipc_fill_value = 0;
+    m_stack_fill_value = 0;
+
+    // Set allocation option.
+    m_allocate_option =
+        KMemoryManager::EncodeOption(pool, from_back ? KMemoryManager::Direction::FromBack
+                                                     : KMemoryManager::Direction::FromFront);
 
     // Ensure that we regions inside our address space
     auto IsInAddressSpace = [&](VAddr addr) {
@@ -267,6 +338,16 @@ void KPageTable::Finalize() {
         m_system.Memory().UnmapRegion(*m_page_table_impl, addr, size);
     });
 
+    // Release any insecure mapped memory.
+    if (m_mapped_insecure_memory) {
+        UNIMPLEMENTED();
+    }
+
+    // Release any ipc server memory.
+    if (m_mapped_ipc_server_memory) {
+        UNIMPLEMENTED();
+    }
+
     // Close the backing page table, as the destructor is not called for guest objects.
     m_page_table_impl.reset();
 }
@@ -650,7 +731,8 @@ bool KPageTable::IsValidPageGroup(const KPageGroup& pg_ll, VAddr addr, size_t nu
 
 Result KPageTable::UnmapProcessMemory(VAddr dst_addr, size_t size, KPageTable& src_page_table,
                                       VAddr src_addr) {
-    KScopedLightLock lk(m_general_lock);
+    // Acquire the table locks.
+    KScopedLightLockPair lk(src_page_table.m_general_lock, m_general_lock);
 
     const size_t num_pages{size / PageSize};
 
@@ -686,9 +768,753 @@ Result KPageTable::UnmapProcessMemory(VAddr dst_addr, size_t size, KPageTable& s
     R_SUCCEED();
 }
 
+Result KPageTable::SetupForIpcClient(PageLinkedList* page_list, size_t* out_blocks_needed,
+                                     VAddr address, size_t size, KMemoryPermission test_perm,
+                                     KMemoryState dst_state) {
+    // Validate pre-conditions.
+    ASSERT(this->IsLockedByCurrentThread());
+    ASSERT(test_perm == KMemoryPermission::UserReadWrite ||
+           test_perm == KMemoryPermission::UserRead);
+
+    // Check that the address is in range.
+    R_UNLESS(this->Contains(address, size), ResultInvalidCurrentMemory);
+
+    // Get the source permission.
+    const auto src_perm = (test_perm == KMemoryPermission::UserReadWrite)
+                              ? KMemoryPermission::KernelReadWrite | KMemoryPermission::NotMapped
+                              : KMemoryPermission::UserRead;
+
+    // Get aligned extents.
+    const VAddr aligned_src_start = Common::AlignDown((address), PageSize);
+    const VAddr aligned_src_end = Common::AlignUp((address) + size, PageSize);
+    const VAddr mapping_src_start = Common::AlignUp((address), PageSize);
+    const VAddr mapping_src_end = Common::AlignDown((address) + size, PageSize);
+
+    const auto aligned_src_last = (aligned_src_end)-1;
+    const auto mapping_src_last = (mapping_src_end)-1;
+
+    // Get the test state and attribute mask.
+    KMemoryState test_state;
+    KMemoryAttribute test_attr_mask;
+    switch (dst_state) {
+    case KMemoryState::Ipc:
+        test_state = KMemoryState::FlagCanUseIpc;
+        test_attr_mask =
+            KMemoryAttribute::Uncached | KMemoryAttribute::DeviceShared | KMemoryAttribute::Locked;
+        break;
+    case KMemoryState::NonSecureIpc:
+        test_state = KMemoryState::FlagCanUseNonSecureIpc;
+        test_attr_mask = KMemoryAttribute::Uncached | KMemoryAttribute::Locked;
+        break;
+    case KMemoryState::NonDeviceIpc:
+        test_state = KMemoryState::FlagCanUseNonDeviceIpc;
+        test_attr_mask = KMemoryAttribute::Uncached | KMemoryAttribute::Locked;
+        break;
+    default:
+        R_THROW(ResultInvalidCombination);
+    }
+
+    // Ensure that on failure, we roll back appropriately.
+    size_t mapped_size = 0;
+    ON_RESULT_FAILURE {
+        if (mapped_size > 0) {
+            this->CleanupForIpcClientOnServerSetupFailure(page_list, mapping_src_start, mapped_size,
+                                                          src_perm);
+        }
+    };
+
+    size_t blocks_needed = 0;
+
+    // Iterate, mapping as needed.
+    KMemoryBlockManager::const_iterator it = m_memory_block_manager.FindIterator(aligned_src_start);
+    while (true) {
+        const KMemoryInfo info = it->GetMemoryInfo();
+
+        // Validate the current block.
+        R_TRY(this->CheckMemoryState(info, test_state, test_state, test_perm, test_perm,
+                                     test_attr_mask, KMemoryAttribute::None));
+
+        if (mapping_src_start < mapping_src_end && (mapping_src_start) < info.GetEndAddress() &&
+            info.GetAddress() < (mapping_src_end)) {
+            const auto cur_start =
+                info.GetAddress() >= (mapping_src_start) ? info.GetAddress() : (mapping_src_start);
+            const auto cur_end = mapping_src_last >= info.GetLastAddress() ? info.GetEndAddress()
+                                                                           : (mapping_src_end);
+            const size_t cur_size = cur_end - cur_start;
+
+            if (info.GetAddress() < (mapping_src_start)) {
+                ++blocks_needed;
+            }
+            if (mapping_src_last < info.GetLastAddress()) {
+                ++blocks_needed;
+            }
+
+            // Set the permissions on the block, if we need to.
+            if ((info.GetPermission() & KMemoryPermission::IpcLockChangeMask) != src_perm) {
+                R_TRY(Operate(cur_start, cur_size / PageSize, src_perm,
+                              OperationType::ChangePermissions));
+            }
+
+            // Note that we mapped this part.
+            mapped_size += cur_size;
+        }
+
+        // If the block is at the end, we're done.
+        if (aligned_src_last <= info.GetLastAddress()) {
+            break;
+        }
+
+        // Advance.
+        ++it;
+        ASSERT(it != m_memory_block_manager.end());
+    }
+
+    if (out_blocks_needed != nullptr) {
+        ASSERT(blocks_needed <= KMemoryBlockManagerUpdateAllocator::MaxBlocks);
+        *out_blocks_needed = blocks_needed;
+    }
+
+    R_SUCCEED();
+}
+
+Result KPageTable::SetupForIpcServer(VAddr* out_addr, size_t size, VAddr src_addr,
+                                     KMemoryPermission test_perm, KMemoryState dst_state,
+                                     KPageTable& src_page_table, bool send) {
+    ASSERT(this->IsLockedByCurrentThread());
+    ASSERT(src_page_table.IsLockedByCurrentThread());
+
+    // Check that we can theoretically map.
+    const VAddr region_start = m_alias_region_start;
+    const size_t region_size = m_alias_region_end - m_alias_region_start;
+    R_UNLESS(size < region_size, ResultOutOfAddressSpace);
+
+    // Get aligned source extents.
+    const VAddr src_start = src_addr;
+    const VAddr src_end = src_addr + size;
+    const VAddr aligned_src_start = Common::AlignDown((src_start), PageSize);
+    const VAddr aligned_src_end = Common::AlignUp((src_start) + size, PageSize);
+    const VAddr mapping_src_start = Common::AlignUp((src_start), PageSize);
+    const VAddr mapping_src_end = Common::AlignDown((src_start) + size, PageSize);
+    const size_t aligned_src_size = aligned_src_end - aligned_src_start;
+    const size_t mapping_src_size =
+        (mapping_src_start < mapping_src_end) ? (mapping_src_end - mapping_src_start) : 0;
+
+    // Select a random address to map at.
+    VAddr dst_addr =
+        this->FindFreeArea(region_start, region_size / PageSize, aligned_src_size / PageSize,
+                           PageSize, 0, this->GetNumGuardPages());
+
+    R_UNLESS(dst_addr != 0, ResultOutOfAddressSpace);
+
+    // Check that we can perform the operation we're about to perform.
+    ASSERT(this->CanContain(dst_addr, aligned_src_size, dst_state));
+
+    // Create an update allocator.
+    Result allocator_result;
+    KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
+                                                 m_memory_block_slab_manager);
+    R_TRY(allocator_result);
+
+    // We're going to perform an update, so create a helper.
+    KScopedPageTableUpdater updater(this);
+
+    // Reserve space for any partial pages we allocate.
+    const size_t unmapped_size = aligned_src_size - mapping_src_size;
+    KScopedResourceReservation memory_reservation(m_resource_limit,
+                                                  LimitableResource::PhysicalMemory, unmapped_size);
+    R_UNLESS(memory_reservation.Succeeded(), ResultLimitReached);
+
+    // Ensure that we manage page references correctly.
+    PAddr start_partial_page = 0;
+    PAddr end_partial_page = 0;
+    VAddr cur_mapped_addr = dst_addr;
+
+    // If the partial pages are mapped, an extra reference will have been opened. Otherwise, they'll
+    // free on scope exit.
+    SCOPE_EXIT({
+        if (start_partial_page != 0) {
+            m_system.Kernel().MemoryManager().Close(start_partial_page, 1);
+        }
+        if (end_partial_page != 0) {
+            m_system.Kernel().MemoryManager().Close(end_partial_page, 1);
+        }
+    });
+
+    ON_RESULT_FAILURE {
+        if (cur_mapped_addr != dst_addr) {
+            // HACK: Manually close the pages.
+            HACK_ClosePages(dst_addr, (cur_mapped_addr - dst_addr) / PageSize);
+
+            ASSERT(Operate(dst_addr, (cur_mapped_addr - dst_addr) / PageSize,
+                           KMemoryPermission::None, OperationType::Unmap)
+                       .IsSuccess());
+        }
+    };
+
+    // Allocate the start page as needed.
+    if (aligned_src_start < mapping_src_start) {
+        start_partial_page =
+            m_system.Kernel().MemoryManager().AllocateAndOpenContinuous(1, 1, m_allocate_option);
+        R_UNLESS(start_partial_page != 0, ResultOutOfMemory);
+    }
+
+    // Allocate the end page as needed.
+    if (mapping_src_end < aligned_src_end &&
+        (aligned_src_start < mapping_src_end || aligned_src_start == mapping_src_start)) {
+        end_partial_page =
+            m_system.Kernel().MemoryManager().AllocateAndOpenContinuous(1, 1, m_allocate_option);
+        R_UNLESS(end_partial_page != 0, ResultOutOfMemory);
+    }
+
+    // Get the implementation.
+    auto& src_impl = src_page_table.PageTableImpl();
+
+    // Get the fill value for partial pages.
+    const auto fill_val = m_ipc_fill_value;
+
+    // Begin traversal.
+    Common::PageTable::TraversalContext context;
+    Common::PageTable::TraversalEntry next_entry;
+    bool traverse_valid = src_impl.BeginTraversal(next_entry, context, aligned_src_start);
+    ASSERT(traverse_valid);
+
+    // Prepare tracking variables.
+    PAddr cur_block_addr = next_entry.phys_addr;
+    size_t cur_block_size =
+        next_entry.block_size - ((cur_block_addr) & (next_entry.block_size - 1));
+    size_t tot_block_size = cur_block_size;
+
+    // Map the start page, if we have one.
+    if (start_partial_page != 0) {
+        // Ensure the page holds correct data.
+        const VAddr start_partial_virt =
+            GetHeapVirtualAddress(m_system.Kernel().MemoryLayout(), start_partial_page);
+        if (send) {
+            const size_t partial_offset = src_start - aligned_src_start;
+            size_t copy_size, clear_size;
+            if (src_end < mapping_src_start) {
+                copy_size = size;
+                clear_size = mapping_src_start - src_end;
+            } else {
+                copy_size = mapping_src_start - src_start;
+                clear_size = 0;
+            }
+
+            std::memset(m_system.Memory().GetPointer<void>(start_partial_virt), fill_val,
+                        partial_offset);
+            std::memcpy(
+                m_system.Memory().GetPointer<void>(start_partial_virt + partial_offset),
+                m_system.Memory().GetPointer<void>(
+                    GetHeapVirtualAddress(m_system.Kernel().MemoryLayout(), cur_block_addr) +
+                    partial_offset),
+                copy_size);
+            if (clear_size > 0) {
+                std::memset(m_system.Memory().GetPointer<void>(start_partial_virt + partial_offset +
+                                                               copy_size),
+                            fill_val, clear_size);
+            }
+        } else {
+            std::memset(m_system.Memory().GetPointer<void>(start_partial_virt), fill_val, PageSize);
+        }
+
+        // Map the page.
+        R_TRY(Operate(cur_mapped_addr, 1, test_perm, OperationType::Map, start_partial_page));
+
+        // HACK: Manually open the pages.
+        HACK_OpenPages(start_partial_page, 1);
+
+        // Update tracking extents.
+        cur_mapped_addr += PageSize;
+        cur_block_addr += PageSize;
+        cur_block_size -= PageSize;
+
+        // If the block's size was one page, we may need to continue traversal.
+        if (cur_block_size == 0 && aligned_src_size > PageSize) {
+            traverse_valid = src_impl.ContinueTraversal(next_entry, context);
+            ASSERT(traverse_valid);
+
+            cur_block_addr = next_entry.phys_addr;
+            cur_block_size = next_entry.block_size;
+            tot_block_size += next_entry.block_size;
+        }
+    }
+
+    // Map the remaining pages.
+    while (aligned_src_start + tot_block_size < mapping_src_end) {
+        // Continue the traversal.
+        traverse_valid = src_impl.ContinueTraversal(next_entry, context);
+        ASSERT(traverse_valid);
+
+        // Process the block.
+        if (next_entry.phys_addr != cur_block_addr + cur_block_size) {
+            // Map the block we've been processing so far.
+            R_TRY(Operate(cur_mapped_addr, cur_block_size / PageSize, test_perm, OperationType::Map,
+                          cur_block_addr));
+
+            // HACK: Manually open the pages.
+            HACK_OpenPages(cur_block_addr, cur_block_size / PageSize);
+
+            // Update tracking extents.
+            cur_mapped_addr += cur_block_size;
+            cur_block_addr = next_entry.phys_addr;
+            cur_block_size = next_entry.block_size;
+        } else {
+            cur_block_size += next_entry.block_size;
+        }
+        tot_block_size += next_entry.block_size;
+    }
+
+    // Handle the last direct-mapped page.
+    if (const VAddr mapped_block_end = aligned_src_start + tot_block_size - cur_block_size;
+        mapped_block_end < mapping_src_end) {
+        const size_t last_block_size = mapping_src_end - mapped_block_end;
+
+        // Map the last block.
+        R_TRY(Operate(cur_mapped_addr, last_block_size / PageSize, test_perm, OperationType::Map,
+                      cur_block_addr));
+
+        // HACK: Manually open the pages.
+        HACK_OpenPages(cur_block_addr, last_block_size / PageSize);
+
+        // Update tracking extents.
+        cur_mapped_addr += last_block_size;
+        cur_block_addr += last_block_size;
+        if (mapped_block_end + cur_block_size < aligned_src_end &&
+            cur_block_size == last_block_size) {
+            traverse_valid = src_impl.ContinueTraversal(next_entry, context);
+            ASSERT(traverse_valid);
+
+            cur_block_addr = next_entry.phys_addr;
+        }
+    }
+
+    // Map the end page, if we have one.
+    if (end_partial_page != 0) {
+        // Ensure the page holds correct data.
+        const VAddr end_partial_virt =
+            GetHeapVirtualAddress(m_system.Kernel().MemoryLayout(), end_partial_page);
+        if (send) {
+            const size_t copy_size = src_end - mapping_src_end;
+            std::memcpy(m_system.Memory().GetPointer<void>(end_partial_virt),
+                        m_system.Memory().GetPointer<void>(GetHeapVirtualAddress(
+                            m_system.Kernel().MemoryLayout(), cur_block_addr)),
+                        copy_size);
+            std::memset(m_system.Memory().GetPointer<void>(end_partial_virt + copy_size), fill_val,
+                        PageSize - copy_size);
+        } else {
+            std::memset(m_system.Memory().GetPointer<void>(end_partial_virt), fill_val, PageSize);
+        }
+
+        // Map the page.
+        R_TRY(Operate(cur_mapped_addr, 1, test_perm, OperationType::Map, end_partial_page));
+
+        // HACK: Manually open the pages.
+        HACK_OpenPages(end_partial_page, 1);
+    }
+
+    // Update memory blocks to reflect our changes
+    m_memory_block_manager.Update(std::addressof(allocator), dst_addr, aligned_src_size / PageSize,
+                                  dst_state, test_perm, KMemoryAttribute::None,
+                                  KMemoryBlockDisableMergeAttribute::Normal,
+                                  KMemoryBlockDisableMergeAttribute::None);
+
+    // Set the output address.
+    *out_addr = dst_addr + (src_start - aligned_src_start);
+
+    // We succeeded.
+    memory_reservation.Commit();
+    R_SUCCEED();
+}
+
+Result KPageTable::SetupForIpc(VAddr* out_dst_addr, size_t size, VAddr src_addr,
+                               KPageTable& src_page_table, KMemoryPermission test_perm,
+                               KMemoryState dst_state, bool send) {
+    // For convenience, alias this.
+    KPageTable& dst_page_table = *this;
+
+    // Acquire the table locks.
+    KScopedLightLockPair lk(src_page_table.m_general_lock, dst_page_table.m_general_lock);
+
+    // We're going to perform an update, so create a helper.
+    KScopedPageTableUpdater updater(std::addressof(src_page_table));
+
+    // Perform client setup.
+    size_t num_allocator_blocks;
+    R_TRY(src_page_table.SetupForIpcClient(updater.GetPageList(),
+                                           std::addressof(num_allocator_blocks), src_addr, size,
+                                           test_perm, dst_state));
+
+    // Create an update allocator.
+    Result allocator_result;
+    KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
+                                                 src_page_table.m_memory_block_slab_manager,
+                                                 num_allocator_blocks);
+    R_TRY(allocator_result);
+
+    // Get the mapped extents.
+    const VAddr src_map_start = Common::AlignUp((src_addr), PageSize);
+    const VAddr src_map_end = Common::AlignDown((src_addr) + size, PageSize);
+    const size_t src_map_size = src_map_end - src_map_start;
+
+    // Ensure that we clean up appropriately if we fail after this.
+    const auto src_perm = (test_perm == KMemoryPermission::UserReadWrite)
+                              ? KMemoryPermission::KernelReadWrite | KMemoryPermission::NotMapped
+                              : KMemoryPermission::UserRead;
+    ON_RESULT_FAILURE {
+        if (src_map_end > src_map_start) {
+            src_page_table.CleanupForIpcClientOnServerSetupFailure(
+                updater.GetPageList(), src_map_start, src_map_size, src_perm);
+        }
+    };
+
+    // Perform server setup.
+    R_TRY(dst_page_table.SetupForIpcServer(out_dst_addr, size, src_addr, test_perm, dst_state,
+                                           src_page_table, send));
+
+    // If anything was mapped, ipc-lock the pages.
+    if (src_map_start < src_map_end) {
+        // Get the source permission.
+        src_page_table.m_memory_block_manager.UpdateLock(std::addressof(allocator), src_map_start,
+                                                         (src_map_end - src_map_start) / PageSize,
+                                                         &KMemoryBlock::LockForIpc, src_perm);
+    }
+
+    R_SUCCEED();
+}
+
+Result KPageTable::CleanupForIpcServer(VAddr address, size_t size, KMemoryState dst_state) {
+    // Validate the address.
+    R_UNLESS(this->Contains(address, size), ResultInvalidCurrentMemory);
+
+    // Lock the table.
+    KScopedLightLock lk(m_general_lock);
+
+    // Validate the memory state.
+    size_t num_allocator_blocks;
+    R_TRY(this->CheckMemoryState(std::addressof(num_allocator_blocks), address, size,
+                                 KMemoryState::All, dst_state, KMemoryPermission::UserRead,
+                                 KMemoryPermission::UserRead, KMemoryAttribute::All,
+                                 KMemoryAttribute::None));
+
+    // Create an update allocator.
+    Result allocator_result;
+    KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
+                                                 m_memory_block_slab_manager, num_allocator_blocks);
+    R_TRY(allocator_result);
+
+    // We're going to perform an update, so create a helper.
+    KScopedPageTableUpdater updater(this);
+
+    // Get aligned extents.
+    const VAddr aligned_start = Common::AlignDown((address), PageSize);
+    const VAddr aligned_end = Common::AlignUp((address) + size, PageSize);
+    const size_t aligned_size = aligned_end - aligned_start;
+    const size_t aligned_num_pages = aligned_size / PageSize;
+
+    // HACK: Manually close the pages.
+    HACK_ClosePages(aligned_start, aligned_num_pages);
+
+    // Unmap the pages.
+    R_TRY(Operate(aligned_start, aligned_num_pages, KMemoryPermission::None, OperationType::Unmap));
+
+    // Update memory blocks.
+    m_memory_block_manager.Update(std::addressof(allocator), aligned_start, aligned_num_pages,
+                                  KMemoryState::None, KMemoryPermission::None,
+                                  KMemoryAttribute::None, KMemoryBlockDisableMergeAttribute::None,
+                                  KMemoryBlockDisableMergeAttribute::Normal);
+
+    // Release from the resource limit as relevant.
+    const VAddr mapping_start = Common::AlignUp((address), PageSize);
+    const VAddr mapping_end = Common::AlignDown((address) + size, PageSize);
+    const size_t mapping_size = (mapping_start < mapping_end) ? mapping_end - mapping_start : 0;
+    m_resource_limit->Release(LimitableResource::PhysicalMemory, aligned_size - mapping_size);
+
+    R_SUCCEED();
+}
+
+Result KPageTable::CleanupForIpcClient(VAddr address, size_t size, KMemoryState dst_state) {
+    // Validate the address.
+    R_UNLESS(this->Contains(address, size), ResultInvalidCurrentMemory);
+
+    // Get aligned source extents.
+    const VAddr mapping_start = Common::AlignUp((address), PageSize);
+    const VAddr mapping_end = Common::AlignDown((address) + size, PageSize);
+    const VAddr mapping_last = mapping_end - 1;
+    const size_t mapping_size = (mapping_start < mapping_end) ? (mapping_end - mapping_start) : 0;
+
+    // If nothing was mapped, we're actually done immediately.
+    R_SUCCEED_IF(mapping_size == 0);
+
+    // Get the test state and attribute mask.
+    KMemoryState test_state;
+    KMemoryAttribute test_attr_mask;
+    switch (dst_state) {
+    case KMemoryState::Ipc:
+        test_state = KMemoryState::FlagCanUseIpc;
+        test_attr_mask =
+            KMemoryAttribute::Uncached | KMemoryAttribute::DeviceShared | KMemoryAttribute::Locked;
+        break;
+    case KMemoryState::NonSecureIpc:
+        test_state = KMemoryState::FlagCanUseNonSecureIpc;
+        test_attr_mask = KMemoryAttribute::Uncached | KMemoryAttribute::Locked;
+        break;
+    case KMemoryState::NonDeviceIpc:
+        test_state = KMemoryState::FlagCanUseNonDeviceIpc;
+        test_attr_mask = KMemoryAttribute::Uncached | KMemoryAttribute::Locked;
+        break;
+    default:
+        R_THROW(ResultInvalidCombination);
+    }
+
+    // Lock the table.
+    // NOTE: Nintendo does this *after* creating the updater below, but this does not follow
+    // convention elsewhere in KPageTable.
+    KScopedLightLock lk(m_general_lock);
+
+    // We're going to perform an update, so create a helper.
+    KScopedPageTableUpdater updater(this);
+
+    // Ensure that on failure, we roll back appropriately.
+    size_t mapped_size = 0;
+    ON_RESULT_FAILURE {
+        if (mapped_size > 0) {
+            // Determine where the mapping ends.
+            const auto mapped_end = (mapping_start) + mapped_size;
+            const auto mapped_last = mapped_end - 1;
+
+            // Get current and next iterators.
+            KMemoryBlockManager::const_iterator start_it =
+                m_memory_block_manager.FindIterator(mapping_start);
+            KMemoryBlockManager::const_iterator next_it = start_it;
+            ++next_it;
+
+            // Get the current block info.
+            KMemoryInfo cur_info = start_it->GetMemoryInfo();
+
+            // Create tracking variables.
+            VAddr cur_address = cur_info.GetAddress();
+            size_t cur_size = cur_info.GetSize();
+            bool cur_perm_eq = cur_info.GetPermission() == cur_info.GetOriginalPermission();
+            bool cur_needs_set_perm = !cur_perm_eq && cur_info.GetIpcLockCount() == 1;
+            bool first =
+                cur_info.GetIpcDisableMergeCount() == 1 &&
+                (cur_info.GetDisableMergeAttribute() & KMemoryBlockDisableMergeAttribute::Locked) ==
+                    KMemoryBlockDisableMergeAttribute::None;
+
+            while (((cur_address) + cur_size - 1) < mapped_last) {
+                // Check that we have a next block.
+                ASSERT(next_it != m_memory_block_manager.end());
+
+                // Get the next info.
+                const KMemoryInfo next_info = next_it->GetMemoryInfo();
+
+                // Check if we can consolidate the next block's permission set with the current one.
+
+                const bool next_perm_eq =
+                    next_info.GetPermission() == next_info.GetOriginalPermission();
+                const bool next_needs_set_perm = !next_perm_eq && next_info.GetIpcLockCount() == 1;
+                if (cur_perm_eq == next_perm_eq && cur_needs_set_perm == next_needs_set_perm &&
+                    cur_info.GetOriginalPermission() == next_info.GetOriginalPermission()) {
+                    // We can consolidate the reprotection for the current and next block into a
+                    // single call.
+                    cur_size += next_info.GetSize();
+                } else {
+                    // We have to operate on the current block.
+                    if ((cur_needs_set_perm || first) && !cur_perm_eq) {
+                        ASSERT(Operate(cur_address, cur_size / PageSize, cur_info.GetPermission(),
+                                       OperationType::ChangePermissions)
+                                   .IsSuccess());
+                    }
+
+                    // Advance.
+                    cur_address = next_info.GetAddress();
+                    cur_size = next_info.GetSize();
+                    first = false;
+                }
+
+                // Advance.
+                cur_info = next_info;
+                cur_perm_eq = next_perm_eq;
+                cur_needs_set_perm = next_needs_set_perm;
+                ++next_it;
+            }
+
+            // Process the last block.
+            if ((first || cur_needs_set_perm) && !cur_perm_eq) {
+                ASSERT(Operate(cur_address, cur_size / PageSize, cur_info.GetPermission(),
+                               OperationType::ChangePermissions)
+                           .IsSuccess());
+            }
+        }
+    };
+
+    // Iterate, reprotecting as needed.
+    {
+        // Get current and next iterators.
+        KMemoryBlockManager::const_iterator start_it =
+            m_memory_block_manager.FindIterator(mapping_start);
+        KMemoryBlockManager::const_iterator next_it = start_it;
+        ++next_it;
+
+        // Validate the current block.
+        KMemoryInfo cur_info = start_it->GetMemoryInfo();
+        ASSERT(this->CheckMemoryState(cur_info, test_state, test_state, KMemoryPermission::None,
+                                      KMemoryPermission::None,
+                                      test_attr_mask | KMemoryAttribute::IpcLocked,
+                                      KMemoryAttribute::IpcLocked)
+                   .IsSuccess());
+
+        // Create tracking variables.
+        VAddr cur_address = cur_info.GetAddress();
+        size_t cur_size = cur_info.GetSize();
+        bool cur_perm_eq = cur_info.GetPermission() == cur_info.GetOriginalPermission();
+        bool cur_needs_set_perm = !cur_perm_eq && cur_info.GetIpcLockCount() == 1;
+        bool first =
+            cur_info.GetIpcDisableMergeCount() == 1 &&
+            (cur_info.GetDisableMergeAttribute() & KMemoryBlockDisableMergeAttribute::Locked) ==
+                KMemoryBlockDisableMergeAttribute::None;
+
+        while ((cur_address + cur_size - 1) < mapping_last) {
+            // Check that we have a next block.
+            ASSERT(next_it != m_memory_block_manager.end());
+
+            // Get the next info.
+            const KMemoryInfo next_info = next_it->GetMemoryInfo();
+
+            // Validate the next block.
+            ASSERT(this->CheckMemoryState(next_info, test_state, test_state,
+                                          KMemoryPermission::None, KMemoryPermission::None,
+                                          test_attr_mask | KMemoryAttribute::IpcLocked,
+                                          KMemoryAttribute::IpcLocked)
+                       .IsSuccess());
+
+            // Check if we can consolidate the next block's permission set with the current one.
+            const bool next_perm_eq =
+                next_info.GetPermission() == next_info.GetOriginalPermission();
+            const bool next_needs_set_perm = !next_perm_eq && next_info.GetIpcLockCount() == 1;
+            if (cur_perm_eq == next_perm_eq && cur_needs_set_perm == next_needs_set_perm &&
+                cur_info.GetOriginalPermission() == next_info.GetOriginalPermission()) {
+                // We can consolidate the reprotection for the current and next block into a single
+                // call.
+                cur_size += next_info.GetSize();
+            } else {
+                // We have to operate on the current block.
+                if ((cur_needs_set_perm || first) && !cur_perm_eq) {
+                    R_TRY(Operate(cur_address, cur_size / PageSize,
+                                  cur_needs_set_perm ? cur_info.GetOriginalPermission()
+                                                     : cur_info.GetPermission(),
+                                  OperationType::ChangePermissions));
+                }
+
+                // Mark that we mapped the block.
+                mapped_size += cur_size;
+
+                // Advance.
+                cur_address = next_info.GetAddress();
+                cur_size = next_info.GetSize();
+                first = false;
+            }
+
+            // Advance.
+            cur_info = next_info;
+            cur_perm_eq = next_perm_eq;
+            cur_needs_set_perm = next_needs_set_perm;
+            ++next_it;
+        }
+
+        // Process the last block.
+        const auto lock_count =
+            cur_info.GetIpcLockCount() +
+            (next_it != m_memory_block_manager.end()
+                 ? (next_it->GetIpcDisableMergeCount() - next_it->GetIpcLockCount())
+                 : 0);
+        if ((first || cur_needs_set_perm || (lock_count == 1)) && !cur_perm_eq) {
+            R_TRY(Operate(cur_address, cur_size / PageSize,
+                          cur_needs_set_perm ? cur_info.GetOriginalPermission()
+                                             : cur_info.GetPermission(),
+                          OperationType::ChangePermissions));
+        }
+    }
+
+    // Create an update allocator.
+    // NOTE: Guaranteed zero blocks needed here.
+    Result allocator_result;
+    KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
+                                                 m_memory_block_slab_manager, 0);
+    R_TRY(allocator_result);
+
+    // Unlock the pages.
+    m_memory_block_manager.UpdateLock(std::addressof(allocator), mapping_start,
+                                      mapping_size / PageSize, &KMemoryBlock::UnlockForIpc,
+                                      KMemoryPermission::None);
+
+    R_SUCCEED();
+}
+
+void KPageTable::CleanupForIpcClientOnServerSetupFailure([[maybe_unused]] PageLinkedList* page_list,
+                                                         VAddr address, size_t size,
+                                                         KMemoryPermission prot_perm) {
+    ASSERT(this->IsLockedByCurrentThread());
+    ASSERT(Common::IsAligned(address, PageSize));
+    ASSERT(Common::IsAligned(size, PageSize));
+
+    // Get the mapped extents.
+    const VAddr src_map_start = address;
+    const VAddr src_map_end = address + size;
+    const VAddr src_map_last = src_map_end - 1;
+
+    // This function is only invoked when there's something to do.
+    ASSERT(src_map_end > src_map_start);
+
+    // Iterate over blocks, fixing permissions.
+    KMemoryBlockManager::const_iterator it = m_memory_block_manager.FindIterator(address);
+    while (true) {
+        const KMemoryInfo info = it->GetMemoryInfo();
+
+        const auto cur_start =
+            info.GetAddress() >= src_map_start ? info.GetAddress() : src_map_start;
+        const auto cur_end =
+            src_map_last <= info.GetLastAddress() ? src_map_end : info.GetEndAddress();
+
+        // If we can, fix the protections on the block.
+        if ((info.GetIpcLockCount() == 0 &&
+             (info.GetPermission() & KMemoryPermission::IpcLockChangeMask) != prot_perm) ||
+            (info.GetIpcLockCount() != 0 &&
+             (info.GetOriginalPermission() & KMemoryPermission::IpcLockChangeMask) != prot_perm)) {
+            // Check if we actually need to fix the protections on the block.
+            if (cur_end == src_map_end || info.GetAddress() <= src_map_start ||
+                (info.GetPermission() & KMemoryPermission::IpcLockChangeMask) != prot_perm) {
+                ASSERT(Operate(cur_start, (cur_end - cur_start) / PageSize, info.GetPermission(),
+                               OperationType::ChangePermissions)
+                           .IsSuccess());
+            }
+        }
+
+        // If we're past the end of the region, we're done.
+        if (src_map_last <= info.GetLastAddress()) {
+            break;
+        }
+
+        // Advance.
+        ++it;
+        ASSERT(it != m_memory_block_manager.end());
+    }
+}
+
+void KPageTable::HACK_OpenPages(PAddr phys_addr, size_t num_pages) {
+    m_system.Kernel().MemoryManager().OpenFirst(phys_addr, num_pages);
+}
+
+void KPageTable::HACK_ClosePages(VAddr virt_addr, size_t num_pages) {
+    for (size_t index = 0; index < num_pages; ++index) {
+        const auto paddr = GetPhysicalAddr(virt_addr + (index * PageSize));
+        m_system.Kernel().MemoryManager().Close(paddr, 1);
+    }
+}
+
 Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) {
     // Lock the physical memory lock.
-    KScopedLightLock map_phys_mem_lk(m_map_physical_memory_lock);
+    KScopedLightLock phys_lk(m_map_physical_memory_lock);
 
     // Calculate the last address for convenience.
     const VAddr last_address = address + size - 1;
@@ -742,15 +1568,19 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) {
         {
             // Reserve the memory from the process resource limit.
             KScopedResourceReservation memory_reservation(
-                m_system.Kernel().CurrentProcess()->GetResourceLimit(),
-                LimitableResource::PhysicalMemory, size - mapped_size);
+                m_resource_limit, LimitableResource::PhysicalMemory, size - mapped_size);
             R_UNLESS(memory_reservation.Succeeded(), ResultLimitReached);
 
             // Allocate pages for the new memory.
             KPageGroup pg;
-            R_TRY(m_system.Kernel().MemoryManager().AllocateAndOpenForProcess(
-                &pg, (size - mapped_size) / PageSize,
-                KMemoryManager::EncodeOption(m_memory_pool, m_allocation_option), 0, 0));
+            R_TRY(m_system.Kernel().MemoryManager().AllocateForProcess(
+                &pg, (size - mapped_size) / PageSize, m_allocate_option, 0, 0));
+
+            // If we fail in the next bit (or retry), we need to cleanup the pages.
+            // auto pg_guard = SCOPE_GUARD {
+            //    pg.OpenFirst();
+            //    pg.Close();
+            //};
 
             // Map the memory.
             {
@@ -810,15 +1640,24 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) {
 
                 // Create an update allocator.
                 ASSERT(num_allocator_blocks <= KMemoryBlockManagerUpdateAllocator::MaxBlocks);
-                Result allocator_result{ResultSuccess};
+                Result allocator_result;
                 KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
                                                              m_memory_block_slab_manager,
                                                              num_allocator_blocks);
                 R_TRY(allocator_result);
 
+                // We're going to perform an update, so create a helper.
+                KScopedPageTableUpdater updater(this);
+
+                // Prepare to iterate over the memory.
+                auto pg_it = pg.Nodes().begin();
+                PAddr pg_phys_addr = pg_it->GetAddress();
+                size_t pg_pages = pg_it->GetNumPages();
+
                 // Reset the current tracking address, and make sure we clean up on failure.
+                // pg_guard.Cancel();
                 cur_address = address;
-                auto unmap_guard = detail::ScopeExit([&] {
+                ON_RESULT_FAILURE {
                     if (cur_address > address) {
                         const VAddr last_unmap_address = cur_address - 1;
 
@@ -841,6 +1680,9 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) {
                                              last_unmap_address + 1 - cur_address) /
                                     PageSize;
 
+                                // HACK: Manually close the pages.
+                                HACK_ClosePages(cur_address, cur_pages);
+
                                 // Unmap.
                                 ASSERT(Operate(cur_address, cur_pages, KMemoryPermission::None,
                                                OperationType::Unmap)
@@ -857,12 +1699,17 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) {
                             ++it;
                         }
                     }
-                });
 
-                // Iterate over the memory.
-                auto pg_it = pg.Nodes().begin();
-                PAddr pg_phys_addr = pg_it->GetAddress();
-                size_t pg_pages = pg_it->GetNumPages();
+                    // Release any remaining unmapped memory.
+                    m_system.Kernel().MemoryManager().OpenFirst(pg_phys_addr, pg_pages);
+                    m_system.Kernel().MemoryManager().Close(pg_phys_addr, pg_pages);
+                    for (++pg_it; pg_it != pg.Nodes().end(); ++pg_it) {
+                        m_system.Kernel().MemoryManager().OpenFirst(pg_it->GetAddress(),
+                                                                    pg_it->GetNumPages());
+                        m_system.Kernel().MemoryManager().Close(pg_it->GetAddress(),
+                                                                pg_it->GetNumPages());
+                    }
+                };
 
                 auto it = m_memory_block_manager.FindIterator(cur_address);
                 while (true) {
@@ -897,6 +1744,9 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) {
                             R_TRY(Operate(cur_address, cur_pages, KMemoryPermission::UserReadWrite,
                                           OperationType::Map, pg_phys_addr));
 
+                            // HACK: Manually open the pages.
+                            HACK_OpenPages(pg_phys_addr, cur_pages);
+
                             // Advance.
                             cur_address += cur_pages * PageSize;
                             map_pages -= cur_pages;
@@ -928,9 +1778,6 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) {
                     KMemoryPermission::None, KMemoryAttribute::None, KMemoryState::Normal,
                     KMemoryPermission::UserReadWrite, KMemoryAttribute::None);
 
-                // Cancel our guard.
-                unmap_guard.Cancel();
-
                 R_SUCCEED();
             }
         }
@@ -939,7 +1786,7 @@ Result KPageTable::MapPhysicalMemory(VAddr address, size_t size) {
 
 Result KPageTable::UnmapPhysicalMemory(VAddr address, size_t size) {
     // Lock the physical memory lock.
-    KScopedLightLock map_phys_mem_lk(m_map_physical_memory_lock);
+    KScopedLightLock phys_lk(m_map_physical_memory_lock);
 
     // Lock the table.
     KScopedLightLock lk(m_general_lock);
@@ -948,8 +1795,11 @@ Result KPageTable::UnmapPhysicalMemory(VAddr address, size_t size) {
     const VAddr last_address = address + size - 1;
 
     // Define iteration variables.
-    VAddr cur_address = 0;
-    size_t mapped_size = 0;
+    VAddr map_start_address = 0;
+    VAddr map_last_address = 0;
+
+    VAddr cur_address;
+    size_t mapped_size;
     size_t num_allocator_blocks = 0;
 
     // Check if the memory is mapped.
@@ -975,27 +1825,27 @@ Result KPageTable::UnmapPhysicalMemory(VAddr address, size_t size) {
             if (is_normal) {
                 R_UNLESS(info.GetAttribute() == KMemoryAttribute::None, ResultInvalidCurrentMemory);
 
+                if (map_start_address == 0) {
+                    map_start_address = cur_address;
+                }
+                map_last_address =
+                    (last_address >= info.GetLastAddress()) ? info.GetLastAddress() : last_address;
+
                 if (info.GetAddress() < address) {
                     ++num_allocator_blocks;
                 }
                 if (last_address < info.GetLastAddress()) {
                     ++num_allocator_blocks;
                 }
+
+                mapped_size += (map_last_address + 1 - cur_address);
             }
 
             // Check if we're done.
             if (last_address <= info.GetLastAddress()) {
-                if (is_normal) {
-                    mapped_size += (last_address + 1 - cur_address);
-                }
                 break;
             }
 
-            // Track the memory if it's mapped.
-            if (is_normal) {
-                mapped_size += VAddr(info.GetEndAddress()) - cur_address;
-            }
-
             // Advance.
             cur_address = info.GetEndAddress();
             ++it;
@@ -1005,125 +1855,22 @@ Result KPageTable::UnmapPhysicalMemory(VAddr address, size_t size) {
         R_SUCCEED_IF(mapped_size == 0);
     }
 
-    // Make a page group for the unmap region.
-    KPageGroup pg;
-    {
-        auto& impl = this->PageTableImpl();
-
-        // Begin traversal.
-        Common::PageTable::TraversalContext context;
-        Common::PageTable::TraversalEntry cur_entry = {.phys_addr = 0, .block_size = 0};
-        bool cur_valid = false;
-        Common::PageTable::TraversalEntry next_entry;
-        bool next_valid = false;
-        size_t tot_size = 0;
-
-        cur_address = address;
-        next_valid = impl.BeginTraversal(next_entry, context, cur_address);
-        next_entry.block_size =
-            (next_entry.block_size - (next_entry.phys_addr & (next_entry.block_size - 1)));
-
-        // Iterate, building the group.
-        while (true) {
-            if ((!next_valid && !cur_valid) ||
-                (next_valid && cur_valid &&
-                 next_entry.phys_addr == cur_entry.phys_addr + cur_entry.block_size)) {
-                cur_entry.block_size += next_entry.block_size;
-            } else {
-                if (cur_valid) {
-                    // ASSERT(IsHeapPhysicalAddress(cur_entry.phys_addr));
-                    R_TRY(pg.AddBlock(cur_entry.phys_addr, cur_entry.block_size / PageSize));
-                }
-
-                // Update tracking variables.
-                tot_size += cur_entry.block_size;
-                cur_entry = next_entry;
-                cur_valid = next_valid;
-            }
-
-            if (cur_entry.block_size + tot_size >= size) {
-                break;
-            }
-
-            next_valid = impl.ContinueTraversal(next_entry, context);
-        }
-
-        // Add the last block.
-        if (cur_valid) {
-            // ASSERT(IsHeapPhysicalAddress(cur_entry.phys_addr));
-            R_TRY(pg.AddBlock(cur_entry.phys_addr, (size - tot_size) / PageSize));
-        }
-    }
-    ASSERT(pg.GetNumPages() == mapped_size / PageSize);
-
     // Create an update allocator.
     ASSERT(num_allocator_blocks <= KMemoryBlockManagerUpdateAllocator::MaxBlocks);
-    Result allocator_result{ResultSuccess};
+    Result allocator_result;
     KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
                                                  m_memory_block_slab_manager, num_allocator_blocks);
     R_TRY(allocator_result);
 
-    // Reset the current tracking address, and make sure we clean up on failure.
-    cur_address = address;
-    auto remap_guard = detail::ScopeExit([&] {
-        if (cur_address > address) {
-            const VAddr last_map_address = cur_address - 1;
-            cur_address = address;
-
-            // Iterate over the memory we unmapped.
-            auto it = m_memory_block_manager.FindIterator(cur_address);
-            auto pg_it = pg.Nodes().begin();
-            PAddr pg_phys_addr = pg_it->GetAddress();
-            size_t pg_pages = pg_it->GetNumPages();
-
-            while (true) {
-                // Get the memory info for the pages we unmapped, convert to property.
-                const KMemoryInfo info = it->GetMemoryInfo();
-
-                // If the memory is normal, we unmapped it and need to re-map it.
-                if (info.GetState() == KMemoryState::Normal) {
-                    // Determine the range to map.
-                    size_t map_pages = std::min(VAddr(info.GetEndAddress()) - cur_address,
-                                                last_map_address + 1 - cur_address) /
-                                       PageSize;
-
-                    // While we have pages to map, map them.
-                    while (map_pages > 0) {
-                        // Check if we're at the end of the physical block.
-                        if (pg_pages == 0) {
-                            // Ensure there are more pages to map.
-                            ASSERT(pg_it != pg.Nodes().end());
-
-                            // Advance our physical block.
-                            ++pg_it;
-                            pg_phys_addr = pg_it->GetAddress();
-                            pg_pages = pg_it->GetNumPages();
-                        }
-
-                        // Map whatever we can.
-                        const size_t cur_pages = std::min(pg_pages, map_pages);
-                        ASSERT(this->Operate(cur_address, cur_pages, info.GetPermission(),
-                                             OperationType::Map, pg_phys_addr) == ResultSuccess);
+    // We're going to perform an update, so create a helper.
+    KScopedPageTableUpdater updater(this);
 
-                        // Advance.
-                        cur_address += cur_pages * PageSize;
-                        map_pages -= cur_pages;
+    // Separate the mapping.
+    R_TRY(Operate(map_start_address, (map_last_address + 1 - map_start_address) / PageSize,
+                  KMemoryPermission::None, OperationType::Separate));
 
-                        pg_phys_addr += cur_pages * PageSize;
-                        pg_pages -= cur_pages;
-                    }
-                }
-
-                // Check if we're done.
-                if (last_map_address <= info.GetLastAddress()) {
-                    break;
-                }
-
-                // Advance.
-                ++it;
-            }
-        }
-    });
+    // Reset the current tracking address, and make sure we clean up on failure.
+    cur_address = address;
 
     // Iterate over the memory, unmapping as we go.
     auto it = m_memory_block_manager.FindIterator(cur_address);
@@ -1141,8 +1888,12 @@ Result KPageTable::UnmapPhysicalMemory(VAddr address, size_t size) {
                                               last_address + 1 - cur_address) /
                                      PageSize;
 
+            // HACK: Manually close the pages.
+            HACK_ClosePages(cur_address, cur_pages);
+
             // Unmap.
-            R_TRY(Operate(cur_address, cur_pages, KMemoryPermission::None, OperationType::Unmap));
+            ASSERT(Operate(cur_address, cur_pages, KMemoryPermission::None, OperationType::Unmap)
+                       .IsSuccess());
         }
 
         // Check if we're done.
@@ -1157,8 +1908,7 @@ Result KPageTable::UnmapPhysicalMemory(VAddr address, size_t size) {
 
     // Release the memory resource.
     m_mapped_physical_memory_size -= mapped_size;
-    auto process{m_system.Kernel().CurrentProcess()};
-    process->GetResourceLimit()->Release(LimitableResource::PhysicalMemory, mapped_size);
+    m_resource_limit->Release(LimitableResource::PhysicalMemory, mapped_size);
 
     // Update memory blocks.
     m_memory_block_manager.Update(std::addressof(allocator), address, size / PageSize,
@@ -1166,14 +1916,7 @@ Result KPageTable::UnmapPhysicalMemory(VAddr address, size_t size) {
                                   KMemoryAttribute::None, KMemoryBlockDisableMergeAttribute::None,
                                   KMemoryBlockDisableMergeAttribute::None);
 
-    // TODO(bunnei): This is a workaround until the next set of changes, where we add reference
-    // counting for mapped pages. Until then, we must manually close the reference to the page
-    // group.
-    m_system.Kernel().MemoryManager().Close(pg);
-
     // We succeeded.
-    remap_guard.Cancel();
-
     R_SUCCEED();
 }
 
@@ -1749,8 +2492,7 @@ Result KPageTable::SetHeapSize(VAddr* out, size_t size) {
                           OperationType::Unmap));
 
             // Release the memory from the resource limit.
-            m_system.Kernel().CurrentProcess()->GetResourceLimit()->Release(
-                LimitableResource::PhysicalMemory, num_pages * PageSize);
+            m_resource_limit->Release(LimitableResource::PhysicalMemory, num_pages * PageSize);
 
             // Apply the memory block update.
             m_memory_block_manager.Update(std::addressof(allocator), m_heap_region_start + size,
@@ -1780,8 +2522,7 @@ Result KPageTable::SetHeapSize(VAddr* out, size_t size) {
 
     // Reserve memory for the heap extension.
     KScopedResourceReservation memory_reservation(
-        m_system.Kernel().CurrentProcess()->GetResourceLimit(), LimitableResource::PhysicalMemory,
-        allocation_size);
+        m_resource_limit, LimitableResource::PhysicalMemory, allocation_size);
     R_UNLESS(memory_reservation.Succeeded(), ResultLimitReached);
 
     // Allocate pages for the heap extension.
@@ -1869,7 +2610,7 @@ ResultVal<VAddr> KPageTable::AllocateAndMapMemory(size_t needed_num_pages, size_
         R_TRY(Operate(addr, needed_num_pages, perm, OperationType::Map, map_addr));
     } else {
         KPageGroup page_group;
-        R_TRY(m_system.Kernel().MemoryManager().AllocateAndOpenForProcess(
+        R_TRY(m_system.Kernel().MemoryManager().AllocateForProcess(
             &page_group, needed_num_pages,
             KMemoryManager::EncodeOption(m_memory_pool, m_allocation_option), 0, 0));
         R_TRY(Operate(addr, needed_num_pages, page_group, OperationType::MapGroup));
@@ -1883,8 +2624,9 @@ ResultVal<VAddr> KPageTable::AllocateAndMapMemory(size_t needed_num_pages, size_
     return addr;
 }
 
-Result KPageTable::LockForMapDeviceAddressSpace(VAddr address, size_t size, KMemoryPermission perm,
-                                                bool is_aligned) {
+Result KPageTable::LockForMapDeviceAddressSpace(bool* out_is_io, VAddr address, size_t size,
+                                                KMemoryPermission perm, bool is_aligned,
+                                                bool check_heap) {
     // Lightly validate the range before doing anything else.
     const size_t num_pages = size / PageSize;
     R_UNLESS(this->Contains(address, size), ResultInvalidCurrentMemory);
@@ -1894,15 +2636,18 @@ Result KPageTable::LockForMapDeviceAddressSpace(VAddr address, size_t size, KMem
 
     // Check the memory state.
     const auto test_state =
-        (is_aligned ? KMemoryState::FlagCanAlignedDeviceMap : KMemoryState::FlagCanDeviceMap);
+        (is_aligned ? KMemoryState::FlagCanAlignedDeviceMap : KMemoryState::FlagCanDeviceMap) |
+        (check_heap ? KMemoryState::FlagReferenceCounted : KMemoryState::None);
     size_t num_allocator_blocks;
-    R_TRY(this->CheckMemoryState(std::addressof(num_allocator_blocks), address, size, test_state,
+    KMemoryState old_state;
+    R_TRY(this->CheckMemoryState(std::addressof(old_state), nullptr, nullptr,
+                                 std::addressof(num_allocator_blocks), address, size, test_state,
                                  test_state, perm, perm,
                                  KMemoryAttribute::IpcLocked | KMemoryAttribute::Locked,
                                  KMemoryAttribute::None, KMemoryAttribute::DeviceShared));
 
     // Create an update allocator.
-    Result allocator_result{ResultSuccess};
+    Result allocator_result;
     KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
                                                  m_memory_block_slab_manager, num_allocator_blocks);
     R_TRY(allocator_result);
@@ -1911,10 +2656,13 @@ Result KPageTable::LockForMapDeviceAddressSpace(VAddr address, size_t size, KMem
     m_memory_block_manager.UpdateLock(std::addressof(allocator), address, num_pages,
                                       &KMemoryBlock::ShareToDevice, KMemoryPermission::None);
 
+    // Set whether the locked memory was io.
+    *out_is_io = old_state == KMemoryState::Io;
+
     R_SUCCEED();
 }
 
-Result KPageTable::LockForUnmapDeviceAddressSpace(VAddr address, size_t size) {
+Result KPageTable::LockForUnmapDeviceAddressSpace(VAddr address, size_t size, bool check_heap) {
     // Lightly validate the range before doing anything else.
     const size_t num_pages = size / PageSize;
     R_UNLESS(this->Contains(address, size), ResultInvalidCurrentMemory);
@@ -1923,16 +2671,16 @@ Result KPageTable::LockForUnmapDeviceAddressSpace(VAddr address, size_t size) {
     KScopedLightLock lk(m_general_lock);
 
     // Check the memory state.
+    const auto test_state = KMemoryState::FlagCanDeviceMap |
+                            (check_heap ? KMemoryState::FlagReferenceCounted : KMemoryState::None);
     size_t num_allocator_blocks;
     R_TRY(this->CheckMemoryStateContiguous(
-        std::addressof(num_allocator_blocks), address, size,
-        KMemoryState::FlagReferenceCounted | KMemoryState::FlagCanDeviceMap,
-        KMemoryState::FlagReferenceCounted | KMemoryState::FlagCanDeviceMap,
+        std::addressof(num_allocator_blocks), address, size, test_state, test_state,
         KMemoryPermission::None, KMemoryPermission::None,
         KMemoryAttribute::DeviceShared | KMemoryAttribute::Locked, KMemoryAttribute::DeviceShared));
 
     // Create an update allocator.
-    Result allocator_result{ResultSuccess};
+    Result allocator_result;
     KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result),
                                                  m_memory_block_slab_manager, num_allocator_blocks);
     R_TRY(allocator_result);
@@ -1976,13 +2724,28 @@ Result KPageTable::UnlockForDeviceAddressSpace(VAddr address, size_t size) {
     R_SUCCEED();
 }
 
+Result KPageTable::LockForIpcUserBuffer(PAddr* out, VAddr address, size_t size) {
+    R_RETURN(this->LockMemoryAndOpen(
+        nullptr, out, address, size, KMemoryState::FlagCanIpcUserBuffer,
+        KMemoryState::FlagCanIpcUserBuffer, KMemoryPermission::All,
+        KMemoryPermission::UserReadWrite, KMemoryAttribute::All, KMemoryAttribute::None,
+        KMemoryPermission::NotMapped | KMemoryPermission::KernelReadWrite,
+        KMemoryAttribute::Locked));
+}
+
+Result KPageTable::UnlockForIpcUserBuffer(VAddr address, size_t size) {
+    R_RETURN(this->UnlockMemory(address, size, KMemoryState::FlagCanIpcUserBuffer,
+                                KMemoryState::FlagCanIpcUserBuffer, KMemoryPermission::None,
+                                KMemoryPermission::None, KMemoryAttribute::All,
+                                KMemoryAttribute::Locked, KMemoryPermission::UserReadWrite,
+                                KMemoryAttribute::Locked, nullptr));
+}
+
 Result KPageTable::LockForCodeMemory(KPageGroup* out, VAddr addr, size_t size) {
     R_RETURN(this->LockMemoryAndOpen(
         out, nullptr, addr, size, KMemoryState::FlagCanCodeMemory, KMemoryState::FlagCanCodeMemory,
         KMemoryPermission::All, KMemoryPermission::UserReadWrite, KMemoryAttribute::All,
-        KMemoryAttribute::None,
-        static_cast<KMemoryPermission>(KMemoryPermission::NotMapped |
-                                       KMemoryPermission::KernelReadWrite),
+        KMemoryAttribute::None, KMemoryPermission::NotMapped | KMemoryPermission::KernelReadWrite,
         KMemoryAttribute::Locked));
 }
 
@@ -2066,6 +2829,10 @@ Result KPageTable::Operate(VAddr addr, size_t num_pages, KMemoryPermission perm,
         m_system.Memory().MapMemoryRegion(*m_page_table_impl, addr, num_pages * PageSize, map_addr);
         break;
     }
+    case OperationType::Separate: {
+        // HACK: Unimplemented.
+        break;
+    }
     case OperationType::ChangePermissions:
     case OperationType::ChangePermissionsAndRefresh:
         break;
@@ -2075,6 +2842,17 @@ Result KPageTable::Operate(VAddr addr, size_t num_pages, KMemoryPermission perm,
     R_SUCCEED();
 }
 
+void KPageTable::FinalizeUpdate(PageLinkedList* page_list) {
+    while (page_list->Peek()) {
+        [[maybe_unused]] auto page = page_list->Pop();
+
+        // TODO(bunnei): Free pages once they are allocated in guest memory
+        // ASSERT(this->GetPageTableManager().IsInPageTableHeap(page));
+        // ASSERT(this->GetPageTableManager().GetRefCount(page) == 0);
+        // this->GetPageTableManager().Free(page);
+    }
+}
+
 VAddr KPageTable::GetRegionAddress(KMemoryState state) const {
     switch (state) {
     case KMemoryState::Free:
@@ -2101,6 +2879,7 @@ VAddr KPageTable::GetRegionAddress(KMemoryState state) const {
     case KMemoryState::GeneratedCode:
     case KMemoryState::CodeOut:
     case KMemoryState::Coverage:
+    case KMemoryState::Insecure:
         return m_alias_code_region_start;
     case KMemoryState::Code:
     case KMemoryState::CodeData:
@@ -2136,6 +2915,7 @@ size_t KPageTable::GetRegionSize(KMemoryState state) const {
     case KMemoryState::GeneratedCode:
     case KMemoryState::CodeOut:
     case KMemoryState::Coverage:
+    case KMemoryState::Insecure:
         return m_alias_code_region_end - m_alias_code_region_start;
     case KMemoryState::Code:
     case KMemoryState::CodeData:
@@ -2177,6 +2957,7 @@ bool KPageTable::CanContain(VAddr addr, size_t size, KMemoryState state) const {
     case KMemoryState::GeneratedCode:
     case KMemoryState::CodeOut:
     case KMemoryState::Coverage:
+    case KMemoryState::Insecure:
         return is_in_region && !is_in_heap && !is_in_alias;
     case KMemoryState::Normal:
         ASSERT(is_in_heap);
diff --git a/src/core/hle/kernel/k_page_table.h b/src/core/hle/kernel/k_page_table.h
index c6aeacd96..950850291 100644
--- a/src/core/hle/kernel/k_page_table.h
+++ b/src/core/hle/kernel/k_page_table.h
@@ -16,6 +16,7 @@
 #include "core/hle/kernel/k_memory_layout.h"
 #include "core/hle/kernel/k_memory_manager.h"
 #include "core/hle/result.h"
+#include "core/memory.h"
 
 namespace Core {
 class System;
@@ -23,7 +24,10 @@ class System;
 
 namespace Kernel {
 
+class KBlockInfoManager;
 class KMemoryBlockManager;
+class KResourceLimit;
+class KSystemResource;
 
 class KPageTable final {
 public:
@@ -36,9 +40,9 @@ public:
     ~KPageTable();
 
     Result InitializeForProcess(FileSys::ProgramAddressSpaceType as_type, bool enable_aslr,
-                                VAddr code_addr, size_t code_size,
-                                KMemoryBlockSlabManager* mem_block_slab_manager,
-                                KMemoryManager::Pool pool);
+                                bool enable_das_merge, bool from_back, KMemoryManager::Pool pool,
+                                VAddr code_addr, size_t code_size, KSystemResource* system_resource,
+                                KResourceLimit* resource_limit);
 
     void Finalize();
 
@@ -74,12 +78,20 @@ public:
                                           KMemoryState state, KMemoryPermission perm,
                                           PAddr map_addr = 0);
 
-    Result LockForMapDeviceAddressSpace(VAddr address, size_t size, KMemoryPermission perm,
-                                        bool is_aligned);
-    Result LockForUnmapDeviceAddressSpace(VAddr address, size_t size);
+    Result LockForMapDeviceAddressSpace(bool* out_is_io, VAddr address, size_t size,
+                                        KMemoryPermission perm, bool is_aligned, bool check_heap);
+    Result LockForUnmapDeviceAddressSpace(VAddr address, size_t size, bool check_heap);
 
     Result UnlockForDeviceAddressSpace(VAddr addr, size_t size);
 
+    Result LockForIpcUserBuffer(PAddr* out, VAddr address, size_t size);
+    Result UnlockForIpcUserBuffer(VAddr address, size_t size);
+
+    Result SetupForIpc(VAddr* out_dst_addr, size_t size, VAddr src_addr, KPageTable& src_page_table,
+                       KMemoryPermission test_perm, KMemoryState dst_state, bool send);
+    Result CleanupForIpcServer(VAddr address, size_t size, KMemoryState dst_state);
+    Result CleanupForIpcClient(VAddr address, size_t size, KMemoryState dst_state);
+
     Result LockForCodeMemory(KPageGroup* out, VAddr addr, size_t size);
     Result UnlockForCodeMemory(VAddr addr, size_t size, const KPageGroup& pg);
     Result MakeAndOpenPageGroup(KPageGroup* out, VAddr address, size_t num_pages,
@@ -97,13 +109,54 @@ public:
 
     bool CanContain(VAddr addr, size_t size, KMemoryState state) const;
 
+protected:
+    struct PageLinkedList {
+    private:
+        struct Node {
+            Node* m_next;
+            std::array<u8, PageSize - sizeof(Node*)> m_buffer;
+        };
+
+    public:
+        constexpr PageLinkedList() = default;
+
+        void Push(Node* n) {
+            ASSERT(Common::IsAligned(reinterpret_cast<uintptr_t>(n), PageSize));
+            n->m_next = m_root;
+            m_root = n;
+        }
+
+        void Push(Core::Memory::Memory& memory, VAddr addr) {
+            this->Push(memory.GetPointer<Node>(addr));
+        }
+
+        Node* Peek() const {
+            return m_root;
+        }
+
+        Node* Pop() {
+            Node* const r = m_root;
+
+            m_root = r->m_next;
+            r->m_next = nullptr;
+
+            return r;
+        }
+
+    private:
+        Node* m_root{};
+    };
+    static_assert(std::is_trivially_destructible<PageLinkedList>::value);
+
 private:
     enum class OperationType : u32 {
-        Map,
-        MapGroup,
-        Unmap,
-        ChangePermissions,
-        ChangePermissionsAndRefresh,
+        Map = 0,
+        MapFirst = 1,
+        MapGroup = 2,
+        Unmap = 3,
+        ChangePermissions = 4,
+        ChangePermissionsAndRefresh = 5,
+        Separate = 6,
     };
 
     static constexpr KMemoryAttribute DefaultMemoryIgnoreAttr =
@@ -123,6 +176,7 @@ private:
                    OperationType operation);
     Result Operate(VAddr addr, size_t num_pages, KMemoryPermission perm, OperationType operation,
                    PAddr map_addr = 0);
+    void FinalizeUpdate(PageLinkedList* page_list);
     VAddr GetRegionAddress(KMemoryState state) const;
     size_t GetRegionSize(KMemoryState state) const;
 
@@ -199,6 +253,18 @@ private:
         return *out != 0;
     }
 
+    Result SetupForIpcClient(PageLinkedList* page_list, size_t* out_blocks_needed, VAddr address,
+                             size_t size, KMemoryPermission test_perm, KMemoryState dst_state);
+    Result SetupForIpcServer(VAddr* out_addr, size_t size, VAddr src_addr,
+                             KMemoryPermission test_perm, KMemoryState dst_state,
+                             KPageTable& src_page_table, bool send);
+    void CleanupForIpcClientOnServerSetupFailure(PageLinkedList* page_list, VAddr address,
+                                                 size_t size, KMemoryPermission prot_perm);
+
+    // HACK: These will be removed once we automatically manage page reference counts.
+    void HACK_OpenPages(PAddr phys_addr, size_t num_pages);
+    void HACK_ClosePages(VAddr virt_addr, size_t num_pages);
+
     mutable KLightLock m_general_lock;
     mutable KLightLock m_map_physical_memory_lock;
 
@@ -316,6 +382,31 @@ public:
                addr + size - 1 <= m_address_space_end - 1;
     }
 
+public:
+    static VAddr GetLinearMappedVirtualAddress(const KMemoryLayout& layout, PAddr addr) {
+        return layout.GetLinearVirtualAddress(addr);
+    }
+
+    static PAddr GetLinearMappedPhysicalAddress(const KMemoryLayout& layout, VAddr addr) {
+        return layout.GetLinearPhysicalAddress(addr);
+    }
+
+    static VAddr GetHeapVirtualAddress(const KMemoryLayout& layout, PAddr addr) {
+        return GetLinearMappedVirtualAddress(layout, addr);
+    }
+
+    static PAddr GetHeapPhysicalAddress(const KMemoryLayout& layout, VAddr addr) {
+        return GetLinearMappedPhysicalAddress(layout, addr);
+    }
+
+    static VAddr GetPageTableVirtualAddress(const KMemoryLayout& layout, PAddr addr) {
+        return GetLinearMappedVirtualAddress(layout, addr);
+    }
+
+    static PAddr GetPageTablePhysicalAddress(const KMemoryLayout& layout, VAddr addr) {
+        return GetLinearMappedPhysicalAddress(layout, addr);
+    }
+
 private:
     constexpr bool IsKernel() const {
         return m_is_kernel;
@@ -331,6 +422,24 @@ private:
     }
 
 private:
+    class KScopedPageTableUpdater {
+    private:
+        KPageTable* m_pt{};
+        PageLinkedList m_ll;
+
+    public:
+        explicit KScopedPageTableUpdater(KPageTable* pt) : m_pt(pt) {}
+        explicit KScopedPageTableUpdater(KPageTable& pt) : KScopedPageTableUpdater(&pt) {}
+        ~KScopedPageTableUpdater() {
+            m_pt->FinalizeUpdate(this->GetPageList());
+        }
+
+        PageLinkedList* GetPageList() {
+            return &m_ll;
+        }
+    };
+
+private:
     VAddr m_address_space_start{};
     VAddr m_address_space_end{};
     VAddr m_heap_region_start{};
@@ -347,20 +456,27 @@ private:
     VAddr m_alias_code_region_start{};
     VAddr m_alias_code_region_end{};
 
-    size_t m_mapped_physical_memory_size{};
     size_t m_max_heap_size{};
-    size_t m_max_physical_memory_size{};
+    size_t m_mapped_physical_memory_size{};
+    size_t m_mapped_unsafe_physical_memory{};
+    size_t m_mapped_insecure_memory{};
+    size_t m_mapped_ipc_server_memory{};
     size_t m_address_space_width{};
 
     KMemoryBlockManager m_memory_block_manager;
+    u32 m_allocate_option{};
 
     bool m_is_kernel{};
     bool m_enable_aslr{};
     bool m_enable_device_address_space_merge{};
 
     KMemoryBlockSlabManager* m_memory_block_slab_manager{};
+    KBlockInfoManager* m_block_info_manager{};
+    KResourceLimit* m_resource_limit{};
 
     u32 m_heap_fill_value{};
+    u32 m_ipc_fill_value{};
+    u32 m_stack_fill_value{};
     const KMemoryRegion* m_cached_physical_heap_region{};
 
     KMemoryManager::Pool m_memory_pool{KMemoryManager::Pool::Application};
diff --git a/src/core/hle/kernel/k_page_table_manager.h b/src/core/hle/kernel/k_page_table_manager.h
new file mode 100644
index 000000000..91a45cde3
--- /dev/null
+++ b/src/core/hle/kernel/k_page_table_manager.h
@@ -0,0 +1,55 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <atomic>
+
+#include "common/common_types.h"
+#include "core/hle/kernel/k_dynamic_resource_manager.h"
+#include "core/hle/kernel/k_page_table_slab_heap.h"
+
+namespace Kernel {
+
+class KPageTableManager : public KDynamicResourceManager<impl::PageTablePage, true> {
+public:
+    using RefCount = KPageTableSlabHeap::RefCount;
+    static constexpr size_t PageTableSize = KPageTableSlabHeap::PageTableSize;
+
+public:
+    KPageTableManager() = default;
+
+    void Initialize(KDynamicPageManager* page_allocator, KPageTableSlabHeap* pt_heap) {
+        m_pt_heap = pt_heap;
+
+        static_assert(std::derived_from<KPageTableSlabHeap, DynamicSlabType>);
+        BaseHeap::Initialize(page_allocator, pt_heap);
+    }
+
+    VAddr Allocate() {
+        return VAddr(BaseHeap::Allocate());
+    }
+
+    RefCount GetRefCount(VAddr addr) const {
+        return m_pt_heap->GetRefCount(addr);
+    }
+
+    void Open(VAddr addr, int count) {
+        return m_pt_heap->Open(addr, count);
+    }
+
+    bool Close(VAddr addr, int count) {
+        return m_pt_heap->Close(addr, count);
+    }
+
+    bool IsInPageTableHeap(VAddr addr) const {
+        return m_pt_heap->IsInRange(addr);
+    }
+
+private:
+    using BaseHeap = KDynamicResourceManager<impl::PageTablePage, true>;
+
+    KPageTableSlabHeap* m_pt_heap{};
+};
+
+} // namespace Kernel
diff --git a/src/core/hle/kernel/k_page_table_slab_heap.h b/src/core/hle/kernel/k_page_table_slab_heap.h
new file mode 100644
index 000000000..a9543cbd0
--- /dev/null
+++ b/src/core/hle/kernel/k_page_table_slab_heap.h
@@ -0,0 +1,93 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <vector>
+
+#include "common/common_types.h"
+#include "core/hle/kernel/k_dynamic_slab_heap.h"
+#include "core/hle/kernel/slab_helpers.h"
+
+namespace Kernel {
+
+namespace impl {
+
+class PageTablePage {
+public:
+    // Do not initialize anything.
+    PageTablePage() = default;
+
+private:
+    std::array<u8, PageSize> m_buffer{};
+};
+static_assert(sizeof(PageTablePage) == PageSize);
+
+} // namespace impl
+
+class KPageTableSlabHeap : public KDynamicSlabHeap<impl::PageTablePage, true> {
+public:
+    using RefCount = u16;
+    static constexpr size_t PageTableSize = sizeof(impl::PageTablePage);
+    static_assert(PageTableSize == PageSize);
+
+public:
+    KPageTableSlabHeap() = default;
+
+    static constexpr size_t CalculateReferenceCountSize(size_t size) {
+        return (size / PageSize) * sizeof(RefCount);
+    }
+
+    void Initialize(KDynamicPageManager* page_allocator, size_t object_count, RefCount* rc) {
+        BaseHeap::Initialize(page_allocator, object_count);
+        this->Initialize(rc);
+    }
+
+    RefCount GetRefCount(VAddr addr) {
+        ASSERT(this->IsInRange(addr));
+        return *this->GetRefCountPointer(addr);
+    }
+
+    void Open(VAddr addr, int count) {
+        ASSERT(this->IsInRange(addr));
+
+        *this->GetRefCountPointer(addr) += static_cast<RefCount>(count);
+
+        ASSERT(this->GetRefCount(addr) > 0);
+    }
+
+    bool Close(VAddr addr, int count) {
+        ASSERT(this->IsInRange(addr));
+        ASSERT(this->GetRefCount(addr) >= count);
+
+        *this->GetRefCountPointer(addr) -= static_cast<RefCount>(count);
+        return this->GetRefCount(addr) == 0;
+    }
+
+    bool IsInPageTableHeap(VAddr addr) const {
+        return this->IsInRange(addr);
+    }
+
+private:
+    void Initialize([[maybe_unused]] RefCount* rc) {
+        // TODO(bunnei): Use rc once we support kernel virtual memory allocations.
+        const auto count = this->GetSize() / PageSize;
+        m_ref_counts.resize(count);
+
+        for (size_t i = 0; i < count; i++) {
+            m_ref_counts[i] = 0;
+        }
+    }
+
+    RefCount* GetRefCountPointer(VAddr addr) {
+        return m_ref_counts.data() + ((addr - this->GetAddress()) / PageSize);
+    }
+
+private:
+    using BaseHeap = KDynamicSlabHeap<impl::PageTablePage, true>;
+
+    std::vector<RefCount> m_ref_counts;
+};
+
+} // namespace Kernel
diff --git a/src/core/hle/kernel/k_process.cpp b/src/core/hle/kernel/k_process.cpp
index 8c3495e5a..4ddeea73b 100644
--- a/src/core/hle/kernel/k_process.cpp
+++ b/src/core/hle/kernel/k_process.cpp
@@ -358,8 +358,8 @@ Result KProcess::LoadFromMetadata(const FileSys::ProgramMetadata& metadata, std:
     }
     // Initialize proces address space
     if (const Result result{page_table.InitializeForProcess(
-            metadata.GetAddressSpaceType(), false, 0x8000000, code_size,
-            &kernel.GetApplicationMemoryBlockManager(), KMemoryManager::Pool::Application)};
+            metadata.GetAddressSpaceType(), false, false, false, KMemoryManager::Pool::Application,
+            0x8000000, code_size, &kernel.GetSystemSystemResource(), resource_limit)};
         result.IsError()) {
         R_RETURN(result);
     }
diff --git a/src/core/hle/kernel/k_system_resource.cpp b/src/core/hle/kernel/k_system_resource.cpp
new file mode 100644
index 000000000..4cc377a6c
--- /dev/null
+++ b/src/core/hle/kernel/k_system_resource.cpp
@@ -0,0 +1,26 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "core/hle/kernel/k_system_resource.h"
+
+namespace Kernel {
+
+Result KSecureSystemResource::Initialize([[maybe_unused]] size_t size,
+                                         [[maybe_unused]] KResourceLimit* resource_limit,
+                                         [[maybe_unused]] KMemoryManager::Pool pool) {
+    // Unimplemented
+    UNREACHABLE();
+}
+
+void KSecureSystemResource::Finalize() {
+    // Unimplemented
+    UNREACHABLE();
+}
+
+size_t KSecureSystemResource::CalculateRequiredSecureMemorySize(
+    [[maybe_unused]] size_t size, [[maybe_unused]] KMemoryManager::Pool pool) {
+    // Unimplemented
+    UNREACHABLE();
+}
+
+} // namespace Kernel
diff --git a/src/core/hle/kernel/k_system_resource.h b/src/core/hle/kernel/k_system_resource.h
new file mode 100644
index 000000000..9a991f725
--- /dev/null
+++ b/src/core/hle/kernel/k_system_resource.h
@@ -0,0 +1,137 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "common/assert.h"
+#include "common/common_types.h"
+#include "core/hle/kernel/k_auto_object.h"
+#include "core/hle/kernel/k_dynamic_resource_manager.h"
+#include "core/hle/kernel/k_memory_manager.h"
+#include "core/hle/kernel/k_page_table_manager.h"
+#include "core/hle/kernel/k_resource_limit.h"
+#include "core/hle/kernel/slab_helpers.h"
+
+namespace Kernel {
+
+// NOTE: Nintendo's implementation does not have the "is_secure_resource" field, and instead uses
+// virtual IsSecureResource().
+
+class KSystemResource : public KAutoObject {
+    KERNEL_AUTOOBJECT_TRAITS(KSystemResource, KAutoObject);
+
+public:
+    explicit KSystemResource(KernelCore& kernel_) : KAutoObject(kernel_) {}
+
+protected:
+    void SetSecureResource() {
+        m_is_secure_resource = true;
+    }
+
+public:
+    virtual void Destroy() override {
+        UNREACHABLE_MSG("KSystemResource::Destroy() was called");
+    }
+
+    bool IsSecureResource() const {
+        return m_is_secure_resource;
+    }
+
+    void SetManagers(KMemoryBlockSlabManager& mb, KBlockInfoManager& bi, KPageTableManager& pt) {
+        ASSERT(m_p_memory_block_slab_manager == nullptr);
+        ASSERT(m_p_block_info_manager == nullptr);
+        ASSERT(m_p_page_table_manager == nullptr);
+
+        m_p_memory_block_slab_manager = std::addressof(mb);
+        m_p_block_info_manager = std::addressof(bi);
+        m_p_page_table_manager = std::addressof(pt);
+    }
+
+    const KMemoryBlockSlabManager& GetMemoryBlockSlabManager() const {
+        return *m_p_memory_block_slab_manager;
+    }
+    const KBlockInfoManager& GetBlockInfoManager() const {
+        return *m_p_block_info_manager;
+    }
+    const KPageTableManager& GetPageTableManager() const {
+        return *m_p_page_table_manager;
+    }
+
+    KMemoryBlockSlabManager& GetMemoryBlockSlabManager() {
+        return *m_p_memory_block_slab_manager;
+    }
+    KBlockInfoManager& GetBlockInfoManager() {
+        return *m_p_block_info_manager;
+    }
+    KPageTableManager& GetPageTableManager() {
+        return *m_p_page_table_manager;
+    }
+
+    KMemoryBlockSlabManager* GetMemoryBlockSlabManagerPointer() {
+        return m_p_memory_block_slab_manager;
+    }
+    KBlockInfoManager* GetBlockInfoManagerPointer() {
+        return m_p_block_info_manager;
+    }
+    KPageTableManager* GetPageTableManagerPointer() {
+        return m_p_page_table_manager;
+    }
+
+private:
+    KMemoryBlockSlabManager* m_p_memory_block_slab_manager{};
+    KBlockInfoManager* m_p_block_info_manager{};
+    KPageTableManager* m_p_page_table_manager{};
+    bool m_is_secure_resource{false};
+};
+
+class KSecureSystemResource final
+    : public KAutoObjectWithSlabHeap<KSecureSystemResource, KSystemResource> {
+public:
+    explicit KSecureSystemResource(KernelCore& kernel_)
+        : KAutoObjectWithSlabHeap<KSecureSystemResource, KSystemResource>(kernel_) {
+        // Mark ourselves as being a secure resource.
+        this->SetSecureResource();
+    }
+
+    Result Initialize(size_t size, KResourceLimit* resource_limit, KMemoryManager::Pool pool);
+    void Finalize();
+
+    bool IsInitialized() const {
+        return m_is_initialized;
+    }
+    static void PostDestroy([[maybe_unused]] uintptr_t arg) {}
+
+    size_t CalculateRequiredSecureMemorySize() const {
+        return CalculateRequiredSecureMemorySize(m_resource_size, m_resource_pool);
+    }
+
+    size_t GetSize() const {
+        return m_resource_size;
+    }
+    size_t GetUsedSize() const {
+        return m_dynamic_page_manager.GetUsed() * PageSize;
+    }
+
+    const KDynamicPageManager& GetDynamicPageManager() const {
+        return m_dynamic_page_manager;
+    }
+
+public:
+    static size_t CalculateRequiredSecureMemorySize(size_t size, KMemoryManager::Pool pool);
+
+private:
+    bool m_is_initialized{};
+    KMemoryManager::Pool m_resource_pool{};
+    KDynamicPageManager m_dynamic_page_manager;
+    KMemoryBlockSlabManager m_memory_block_slab_manager;
+    KBlockInfoManager m_block_info_manager;
+    KPageTableManager m_page_table_manager;
+    KMemoryBlockSlabHeap m_memory_block_heap;
+    KBlockInfoSlabHeap m_block_info_heap;
+    KPageTableSlabHeap m_page_table_heap;
+    KResourceLimit* m_resource_limit{};
+    VAddr m_resource_address{};
+    size_t m_resource_size{};
+};
+
+} // namespace Kernel
diff --git a/src/core/hle/kernel/kernel.cpp b/src/core/hle/kernel/kernel.cpp
index 09c36ee09..47b760a9c 100644
--- a/src/core/hle/kernel/kernel.cpp
+++ b/src/core/hle/kernel/kernel.cpp
@@ -28,10 +28,12 @@
 #include "core/hle/kernel/k_handle_table.h"
 #include "core/hle/kernel/k_memory_layout.h"
 #include "core/hle/kernel/k_memory_manager.h"
+#include "core/hle/kernel/k_page_buffer.h"
 #include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_resource_limit.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_shared_memory.h"
+#include "core/hle/kernel/k_system_resource.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/k_worker_task_manager.h"
 #include "core/hle/kernel/kernel.h"
@@ -47,6 +49,11 @@ MICROPROFILE_DEFINE(Kernel_SVC, "Kernel", "SVC", MP_RGB(70, 200, 70));
 namespace Kernel {
 
 struct KernelCore::Impl {
+    static constexpr size_t ApplicationMemoryBlockSlabHeapSize = 20000;
+    static constexpr size_t SystemMemoryBlockSlabHeapSize = 10000;
+    static constexpr size_t BlockInfoSlabHeapSize = 4000;
+    static constexpr size_t ReservedDynamicPageCount = 64;
+
     explicit Impl(Core::System& system_, KernelCore& kernel_)
         : time_manager{system_}, service_threads_manager{1, "ServiceThreadsManager"},
           service_thread_barrier{2}, system{system_} {}
@@ -71,7 +78,6 @@ struct KernelCore::Impl {
         // Initialize kernel memory and resources.
         InitializeSystemResourceLimit(kernel, system.CoreTiming());
         InitializeMemoryLayout();
-        Init::InitializeKPageBufferSlabHeap(system);
         InitializeShutdownThreads();
         InitializePhysicalCores();
         InitializePreemption(kernel);
@@ -81,7 +87,8 @@ struct KernelCore::Impl {
             const auto& pt_heap_region = memory_layout->GetPageTableHeapRegion();
             ASSERT(pt_heap_region.GetEndAddress() != 0);
 
-            InitializeResourceManagers(pt_heap_region.GetAddress(), pt_heap_region.GetSize());
+            InitializeResourceManagers(kernel, pt_heap_region.GetAddress(),
+                                       pt_heap_region.GetSize());
         }
 
         RegisterHostThread();
@@ -253,16 +260,82 @@ struct KernelCore::Impl {
         system.CoreTiming().ScheduleLoopingEvent(time_interval, time_interval, preemption_event);
     }
 
-    void InitializeResourceManagers(VAddr address, size_t size) {
-        dynamic_page_manager = std::make_unique<KDynamicPageManager>();
-        memory_block_heap = std::make_unique<KMemoryBlockSlabHeap>();
+    void InitializeResourceManagers(KernelCore& kernel, VAddr address, size_t size) {
+        // Ensure that the buffer is suitable for our use.
+        ASSERT(Common::IsAligned(address, PageSize));
+        ASSERT(Common::IsAligned(size, PageSize));
+
+        // Ensure that we have space for our reference counts.
+        const size_t rc_size =
+            Common::AlignUp(KPageTableSlabHeap::CalculateReferenceCountSize(size), PageSize);
+        ASSERT(rc_size < size);
+        size -= rc_size;
+
+        // Initialize the resource managers' shared page manager.
+        resource_manager_page_manager = std::make_unique<KDynamicPageManager>();
+        resource_manager_page_manager->Initialize(
+            address, size, std::max<size_t>(PageSize, KPageBufferSlabHeap::BufferSize));
+
+        // Initialize the KPageBuffer slab heap.
+        page_buffer_slab_heap.Initialize(system);
+
+        // Initialize the fixed-size slabheaps.
+        app_memory_block_heap = std::make_unique<KMemoryBlockSlabHeap>();
+        sys_memory_block_heap = std::make_unique<KMemoryBlockSlabHeap>();
+        block_info_heap = std::make_unique<KBlockInfoSlabHeap>();
+        app_memory_block_heap->Initialize(resource_manager_page_manager.get(),
+                                          ApplicationMemoryBlockSlabHeapSize);
+        sys_memory_block_heap->Initialize(resource_manager_page_manager.get(),
+                                          SystemMemoryBlockSlabHeapSize);
+        block_info_heap->Initialize(resource_manager_page_manager.get(), BlockInfoSlabHeapSize);
+
+        // Reserve all but a fixed number of remaining pages for the page table heap.
+        const size_t num_pt_pages = resource_manager_page_manager->GetCount() -
+                                    resource_manager_page_manager->GetUsed() -
+                                    ReservedDynamicPageCount;
+        page_table_heap = std::make_unique<KPageTableSlabHeap>();
+
+        // TODO(bunnei): Pass in address once we support kernel virtual memory allocations.
+        page_table_heap->Initialize(
+            resource_manager_page_manager.get(), num_pt_pages,
+            /*GetPointer<KPageTableManager::RefCount>(address + size)*/ nullptr);
+
+        // Setup the slab managers.
+        KDynamicPageManager* const app_dynamic_page_manager = nullptr;
+        KDynamicPageManager* const sys_dynamic_page_manager =
+            /*KTargetSystem::IsDynamicResourceLimitsEnabled()*/ true
+                ? resource_manager_page_manager.get()
+                : nullptr;
         app_memory_block_manager = std::make_unique<KMemoryBlockSlabManager>();
-
-        dynamic_page_manager->Initialize(address, size);
-        static constexpr size_t ApplicationMemoryBlockSlabHeapSize = 20000;
-        memory_block_heap->Initialize(dynamic_page_manager.get(),
-                                      ApplicationMemoryBlockSlabHeapSize);
-        app_memory_block_manager->Initialize(nullptr, memory_block_heap.get());
+        sys_memory_block_manager = std::make_unique<KMemoryBlockSlabManager>();
+        app_block_info_manager = std::make_unique<KBlockInfoManager>();
+        sys_block_info_manager = std::make_unique<KBlockInfoManager>();
+        app_page_table_manager = std::make_unique<KPageTableManager>();
+        sys_page_table_manager = std::make_unique<KPageTableManager>();
+
+        app_memory_block_manager->Initialize(app_dynamic_page_manager, app_memory_block_heap.get());
+        sys_memory_block_manager->Initialize(sys_dynamic_page_manager, sys_memory_block_heap.get());
+
+        app_block_info_manager->Initialize(app_dynamic_page_manager, block_info_heap.get());
+        sys_block_info_manager->Initialize(sys_dynamic_page_manager, block_info_heap.get());
+
+        app_page_table_manager->Initialize(app_dynamic_page_manager, page_table_heap.get());
+        sys_page_table_manager->Initialize(sys_dynamic_page_manager, page_table_heap.get());
+
+        // Check that we have the correct number of dynamic pages available.
+        ASSERT(resource_manager_page_manager->GetCount() -
+                   resource_manager_page_manager->GetUsed() ==
+               ReservedDynamicPageCount);
+
+        // Create the system page table managers.
+        app_system_resource = std::make_unique<KSystemResource>(kernel);
+        sys_system_resource = std::make_unique<KSystemResource>(kernel);
+
+        // Set the managers for the system resources.
+        app_system_resource->SetManagers(*app_memory_block_manager, *app_block_info_manager,
+                                         *app_page_table_manager);
+        sys_system_resource->SetManagers(*sys_memory_block_manager, *sys_block_info_manager,
+                                         *sys_page_table_manager);
     }
 
     void InitializeShutdownThreads() {
@@ -446,6 +519,9 @@ struct KernelCore::Impl {
         ASSERT(memory_layout->GetVirtualMemoryRegionTree().Insert(
             misc_region_start, misc_region_size, KMemoryRegionType_KernelMisc));
 
+        // Determine if we'll use extra thread resources.
+        const bool use_extra_resources = KSystemControl::Init::ShouldIncreaseThreadResourceLimit();
+
         // Setup the stack region.
         constexpr size_t StackRegionSize = 14_MiB;
         constexpr size_t StackRegionAlign = KernelAslrAlignment;
@@ -456,7 +532,8 @@ struct KernelCore::Impl {
             stack_region_start, StackRegionSize, KMemoryRegionType_KernelStack));
 
         // Determine the size of the resource region.
-        const size_t resource_region_size = memory_layout->GetResourceRegionSizeForInit();
+        const size_t resource_region_size =
+            memory_layout->GetResourceRegionSizeForInit(use_extra_resources);
 
         // Determine the size of the slab region.
         const size_t slab_region_size =
@@ -751,6 +828,8 @@ struct KernelCore::Impl {
     Init::KSlabResourceCounts slab_resource_counts{};
     KResourceLimit* system_resource_limit{};
 
+    KPageBufferSlabHeap page_buffer_slab_heap;
+
     std::shared_ptr<Core::Timing::EventType> preemption_event;
 
     // This is the kernel's handle table or supervisor handle table which
@@ -776,10 +855,20 @@ struct KernelCore::Impl {
     // Kernel memory management
     std::unique_ptr<KMemoryManager> memory_manager;
 
-    // Dynamic slab managers
-    std::unique_ptr<KDynamicPageManager> dynamic_page_manager;
-    std::unique_ptr<KMemoryBlockSlabHeap> memory_block_heap;
+    // Resource managers
+    std::unique_ptr<KDynamicPageManager> resource_manager_page_manager;
+    std::unique_ptr<KPageTableSlabHeap> page_table_heap;
+    std::unique_ptr<KMemoryBlockSlabHeap> app_memory_block_heap;
+    std::unique_ptr<KMemoryBlockSlabHeap> sys_memory_block_heap;
+    std::unique_ptr<KBlockInfoSlabHeap> block_info_heap;
+    std::unique_ptr<KPageTableManager> app_page_table_manager;
+    std::unique_ptr<KPageTableManager> sys_page_table_manager;
     std::unique_ptr<KMemoryBlockSlabManager> app_memory_block_manager;
+    std::unique_ptr<KMemoryBlockSlabManager> sys_memory_block_manager;
+    std::unique_ptr<KBlockInfoManager> app_block_info_manager;
+    std::unique_ptr<KBlockInfoManager> sys_block_info_manager;
+    std::unique_ptr<KSystemResource> app_system_resource;
+    std::unique_ptr<KSystemResource> sys_system_resource;
 
     // Shared memory for services
     Kernel::KSharedMemory* hid_shared_mem{};
@@ -1057,12 +1146,12 @@ const KMemoryManager& KernelCore::MemoryManager() const {
     return *impl->memory_manager;
 }
 
-KMemoryBlockSlabManager& KernelCore::GetApplicationMemoryBlockManager() {
-    return *impl->app_memory_block_manager;
+KSystemResource& KernelCore::GetSystemSystemResource() {
+    return *impl->sys_system_resource;
 }
 
-const KMemoryBlockSlabManager& KernelCore::GetApplicationMemoryBlockManager() const {
-    return *impl->app_memory_block_manager;
+const KSystemResource& KernelCore::GetSystemSystemResource() const {
+    return *impl->sys_system_resource;
 }
 
 Kernel::KSharedMemory& KernelCore::GetHidSharedMem() {
diff --git a/src/core/hle/kernel/kernel.h b/src/core/hle/kernel/kernel.h
index 4ae6b3923..caca60586 100644
--- a/src/core/hle/kernel/kernel.h
+++ b/src/core/hle/kernel/kernel.h
@@ -34,13 +34,16 @@ class KClientPort;
 class GlobalSchedulerContext;
 class KAutoObjectWithListContainer;
 class KClientSession;
+class KDebug;
+class KDynamicPageManager;
 class KEvent;
+class KEventInfo;
 class KHandleTable;
 class KLinkedListNode;
-class KMemoryBlockSlabManager;
 class KMemoryLayout;
 class KMemoryManager;
 class KPageBuffer;
+class KPageBufferSlabHeap;
 class KPort;
 class KProcess;
 class KResourceLimit;
@@ -51,6 +54,7 @@ class KSession;
 class KSessionRequest;
 class KSharedMemory;
 class KSharedMemoryInfo;
+class KSecureSystemResource;
 class KThread;
 class KThreadLocalPage;
 class KTransferMemory;
@@ -244,11 +248,11 @@ public:
     /// Gets the virtual memory manager for the kernel.
     const KMemoryManager& MemoryManager() const;
 
-    /// Gets the application memory block manager for the kernel.
-    KMemoryBlockSlabManager& GetApplicationMemoryBlockManager();
+    /// Gets the system resource manager.
+    KSystemResource& GetSystemSystemResource();
 
-    /// Gets the application memory block manager for the kernel.
-    const KMemoryBlockSlabManager& GetApplicationMemoryBlockManager() const;
+    /// Gets the system resource manager.
+    const KSystemResource& GetSystemSystemResource() const;
 
     /// Gets the shared memory object for HID services.
     Kernel::KSharedMemory& GetHidSharedMem();
@@ -364,6 +368,12 @@ public:
             return slab_heap_container->thread_local_page;
         } else if constexpr (std::is_same_v<T, KSessionRequest>) {
             return slab_heap_container->session_request;
+        } else if constexpr (std::is_same_v<T, KSecureSystemResource>) {
+            return slab_heap_container->secure_system_resource;
+        } else if constexpr (std::is_same_v<T, KEventInfo>) {
+            return slab_heap_container->event_info;
+        } else if constexpr (std::is_same_v<T, KDebug>) {
+            return slab_heap_container->debug;
         }
     }
 
@@ -427,6 +437,9 @@ private:
         KSlabHeap<KPageBuffer> page_buffer;
         KSlabHeap<KThreadLocalPage> thread_local_page;
         KSlabHeap<KSessionRequest> session_request;
+        KSlabHeap<KSecureSystemResource> secure_system_resource;
+        KSlabHeap<KEventInfo> event_info;
+        KSlabHeap<KDebug> debug;
     };
 
     std::unique_ptr<SlabHeapContainer> slab_heap_container;
diff --git a/src/core/hle/kernel/slab_helpers.h b/src/core/hle/kernel/slab_helpers.h
index 06b51e919..0228ce188 100644
--- a/src/core/hle/kernel/slab_helpers.h
+++ b/src/core/hle/kernel/slab_helpers.h
@@ -53,6 +53,84 @@ public:
 };
 
 template <typename Derived, typename Base>
+class KAutoObjectWithSlabHeap : public Base {
+    static_assert(std::is_base_of<KAutoObject, Base>::value);
+
+private:
+    static Derived* Allocate(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().Allocate(kernel);
+    }
+
+    static void Free(KernelCore& kernel, Derived* obj) {
+        kernel.SlabHeap<Derived>().Free(obj);
+    }
+
+public:
+    explicit KAutoObjectWithSlabHeap(KernelCore& kernel_) : Base(kernel_), kernel(kernel_) {}
+    virtual ~KAutoObjectWithSlabHeap() = default;
+
+    virtual void Destroy() override {
+        const bool is_initialized = this->IsInitialized();
+        uintptr_t arg = 0;
+        if (is_initialized) {
+            arg = this->GetPostDestroyArgument();
+            this->Finalize();
+        }
+        Free(kernel, static_cast<Derived*>(this));
+        if (is_initialized) {
+            Derived::PostDestroy(arg);
+        }
+    }
+
+    virtual bool IsInitialized() const {
+        return true;
+    }
+    virtual uintptr_t GetPostDestroyArgument() const {
+        return 0;
+    }
+
+    size_t GetSlabIndex() const {
+        return SlabHeap<Derived>(kernel).GetObjectIndex(static_cast<const Derived*>(this));
+    }
+
+public:
+    static void InitializeSlabHeap(KernelCore& kernel, void* memory, size_t memory_size) {
+        kernel.SlabHeap<Derived>().Initialize(memory, memory_size);
+    }
+
+    static Derived* Create(KernelCore& kernel) {
+        Derived* obj = Allocate(kernel);
+        if (obj != nullptr) {
+            KAutoObject::Create(obj);
+        }
+        return obj;
+    }
+
+    static size_t GetObjectSize(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().GetObjectSize();
+    }
+
+    static size_t GetSlabHeapSize(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().GetSlabHeapSize();
+    }
+
+    static size_t GetPeakIndex(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().GetPeakIndex();
+    }
+
+    static uintptr_t GetSlabHeapAddress(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().GetSlabHeapAddress();
+    }
+
+    static size_t GetNumRemaining(KernelCore& kernel) {
+        return kernel.SlabHeap<Derived>().GetNumRemaining();
+    }
+
+protected:
+    KernelCore& kernel;
+};
+
+template <typename Derived, typename Base>
 class KAutoObjectWithSlabHeapAndContainer : public Base {
     static_assert(std::is_base_of<KAutoObjectWithList, Base>::value);
 
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp
index 4c819f4b6..ecac97a52 100644
--- a/src/core/hle/kernel/svc.cpp
+++ b/src/core/hle/kernel/svc.cpp
@@ -2247,7 +2247,7 @@ static u64 GetSystemTick(Core::System& system) {
     auto& core_timing = system.CoreTiming();
 
     // Returns the value of cntpct_el0 (https://switchbrew.org/wiki/SVC#svcGetSystemTick)
-    const u64 result{system.CoreTiming().GetClockTicks()};
+    const u64 result{core_timing.GetClockTicks()};
 
     if (!system.Kernel().IsMulticore()) {
         core_timing.AddTicks(400U);
diff --git a/src/core/hle/kernel/svc_results.h b/src/core/hle/kernel/svc_results.h
index f27cade33..b7ca53085 100644
--- a/src/core/hle/kernel/svc_results.h
+++ b/src/core/hle/kernel/svc_results.h
@@ -37,6 +37,7 @@ constexpr Result ResultInvalidState{ErrorModule::Kernel, 125};
 constexpr Result ResultReservedUsed{ErrorModule::Kernel, 126};
 constexpr Result ResultPortClosed{ErrorModule::Kernel, 131};
 constexpr Result ResultLimitReached{ErrorModule::Kernel, 132};
+constexpr Result ResultOutOfAddressSpace{ErrorModule::Kernel, 259};
 constexpr Result ResultInvalidId{ErrorModule::Kernel, 519};
 
 } // namespace Kernel
diff --git a/src/core/hle/kernel/svc_types.h b/src/core/hle/kernel/svc_types.h
index abb9847fe..9b0305552 100644
--- a/src/core/hle/kernel/svc_types.h
+++ b/src/core/hle/kernel/svc_types.h
@@ -22,8 +22,8 @@ enum class MemoryState : u32 {
     Ipc = 0x0A,
     Stack = 0x0B,
     ThreadLocal = 0x0C,
-    Transferred = 0x0D,
-    SharedTransferred = 0x0E,
+    Transfered = 0x0D,
+    SharedTransfered = 0x0E,
     SharedCode = 0x0F,
     Inaccessible = 0x10,
     NonSecureIpc = 0x11,
@@ -32,6 +32,7 @@ enum class MemoryState : u32 {
     GeneratedCode = 0x14,
     CodeOut = 0x15,
     Coverage = 0x16,
+    Insecure = 0x17,
 };
 DECLARE_ENUM_FLAG_OPERATORS(MemoryState);
 
@@ -83,6 +84,13 @@ enum class YieldType : s64 {
     ToAnyThread = -2,
 };
 
+enum class ThreadExitReason : u32 {
+    ExitThread = 0,
+    TerminateThread = 1,
+    ExitProcess = 2,
+    TerminateProcess = 3,
+};
+
 enum class ThreadActivity : u32 {
     Runnable = 0,
     Paused = 1,
@@ -108,6 +116,34 @@ enum class ProcessState : u32 {
     DebugBreak = 7,
 };
 
+enum class ProcessExitReason : u32 {
+    ExitProcess = 0,
+    TerminateProcess = 1,
+    Exception = 2,
+};
+
 constexpr inline size_t ThreadLocalRegionSize = 0x200;
 
+// Debug types.
+enum class DebugEvent : u32 {
+    CreateProcess = 0,
+    CreateThread = 1,
+    ExitProcess = 2,
+    ExitThread = 3,
+    Exception = 4,
+};
+
+enum class DebugException : u32 {
+    UndefinedInstruction = 0,
+    InstructionAbort = 1,
+    DataAbort = 2,
+    AlignmentFault = 3,
+    DebuggerAttached = 4,
+    BreakPoint = 5,
+    UserBreak = 6,
+    DebuggerBreak = 7,
+    UndefinedSystemCall = 8,
+    MemorySystemError = 9,
+};
+
 } // namespace Kernel::Svc
diff --git a/src/core/hle/result.h b/src/core/hle/result.h
index ef4b2d417..56c990728 100644
--- a/src/core/hle/result.h
+++ b/src/core/hle/result.h
@@ -423,16 +423,17 @@ constexpr void UpdateCurrentResultReference<const Result>(Result result_referenc
 } // namespace ResultImpl
 
 #define DECLARE_CURRENT_RESULT_REFERENCE_AND_STORAGE(COUNTER_VALUE)                                \
-    [[maybe_unused]] constexpr bool HasPrevRef_##COUNTER_VALUE =                                   \
+    [[maybe_unused]] constexpr bool CONCAT2(HasPrevRef_, COUNTER_VALUE) =                          \
         std::same_as<decltype(__TmpCurrentResultReference), Result&>;                              \
-    [[maybe_unused]] auto& PrevRef_##COUNTER_VALUE = __TmpCurrentResultReference;                  \
-    [[maybe_unused]] Result __tmp_result_##COUNTER_VALUE = ResultSuccess;                          \
-    Result& __TmpCurrentResultReference =                                                          \
-        HasPrevRef_##COUNTER_VALUE ? PrevRef_##COUNTER_VALUE : __tmp_result_##COUNTER_VALUE
+    [[maybe_unused]] Result CONCAT2(PrevRef_, COUNTER_VALUE) = __TmpCurrentResultReference;        \
+    [[maybe_unused]] Result CONCAT2(__tmp_result_, COUNTER_VALUE) = ResultSuccess;                 \
+    Result& __TmpCurrentResultReference = CONCAT2(HasPrevRef_, COUNTER_VALUE)                      \
+                                              ? CONCAT2(PrevRef_, COUNTER_VALUE)                   \
+                                              : CONCAT2(__tmp_result_, COUNTER_VALUE)
 
 #define ON_RESULT_RETURN_IMPL(...)                                                                 \
     static_assert(std::same_as<decltype(__TmpCurrentResultReference), Result&>);                   \
-    auto RESULT_GUARD_STATE_##__COUNTER__ =                                                        \
+    auto CONCAT2(RESULT_GUARD_STATE_, __COUNTER__) =                                               \
         ResultImpl::ResultReferenceForScopedResultGuard<__VA_ARGS__>(                              \
             __TmpCurrentResultReference) +                                                         \
         [&]()
diff --git a/src/core/hle/service/nvdrv/devices/nvmap.cpp b/src/core/hle/service/nvdrv/devices/nvmap.cpp
index 44388655d..fa29db758 100644
--- a/src/core/hle/service/nvdrv/devices/nvmap.cpp
+++ b/src/core/hle/service/nvdrv/devices/nvmap.cpp
@@ -126,10 +126,12 @@ NvResult nvmap::IocAlloc(const std::vector<u8>& input, std::vector<u8>& output)
         LOG_CRITICAL(Service_NVDRV, "Object failed to allocate, handle={:08X}", params.handle);
         return result;
     }
+    bool is_out_io{};
     ASSERT(system.CurrentProcess()
                ->PageTable()
-               .LockForMapDeviceAddressSpace(handle_description->address, handle_description->size,
-                                             Kernel::KMemoryPermission::None, true)
+               .LockForMapDeviceAddressSpace(&is_out_io, handle_description->address,
+                                             handle_description->size,
+                                             Kernel::KMemoryPermission::None, true, false)
                .IsSuccess());
     std::memcpy(output.data(), &params, sizeof(params));
     return result;