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authorbunnei <bunneidev@gmail.com>2022-01-15 08:00:55 +0100
committerbunnei <bunneidev@gmail.com>2022-01-22 10:33:26 +0100
commit6d8e498f76b8150a4c1c7944c475f7a43215ba4a (patch)
tree649d5fe7ecee4cc51437604d850b694932502114 /src/core/hle/kernel
parentcore: hle: kernel: Rename Un/Map to Un/MapMeory. (diff)
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Diffstat (limited to '')
-rw-r--r--src/core/hle/kernel/k_page_table.cpp87
-rw-r--r--src/core/hle/kernel/k_page_table.h2
2 files changed, 39 insertions, 50 deletions
diff --git a/src/core/hle/kernel/k_page_table.cpp b/src/core/hle/kernel/k_page_table.cpp
index 32a1bf462..5ec183b9e 100644
--- a/src/core/hle/kernel/k_page_table.cpp
+++ b/src/core/hle/kernel/k_page_table.cpp
@@ -395,39 +395,12 @@ ResultCode KPageTable::UnmapProcessMemory(VAddr dst_addr, std::size_t size,
return ResultSuccess;
}
-void KPageTable::MapPhysicalMemory(KPageLinkedList& page_linked_list, VAddr start, VAddr end) {
- auto node{page_linked_list.Nodes().begin()};
- PAddr map_addr{node->GetAddress()};
- std::size_t src_num_pages{node->GetNumPages()};
-
- block_manager->IterateForRange(start, end, [&](const KMemoryInfo& info) {
- if (info.state != KMemoryState::Free) {
- return;
- }
-
- std::size_t dst_num_pages{GetSizeInRange(info, start, end) / PageSize};
- VAddr dst_addr{GetAddressInRange(info, start)};
-
- while (dst_num_pages) {
- if (!src_num_pages) {
- node = std::next(node);
- map_addr = node->GetAddress();
- src_num_pages = node->GetNumPages();
- }
-
- const std::size_t num_pages{std::min(src_num_pages, dst_num_pages)};
- Operate(dst_addr, num_pages, KMemoryPermission::UserReadWrite, OperationType::Map,
- map_addr);
-
- dst_addr += num_pages * PageSize;
- map_addr += num_pages * PageSize;
- src_num_pages -= num_pages;
- dst_num_pages -= num_pages;
- }
- });
-}
ResultCode KPageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {
+ // Lock the physical memory lock.
+ std::lock_guard phys_lk(map_physical_memory_lock);
+
+ // Lock the table.
std::lock_guard lock{page_table_lock};
std::size_t mapped_size{};
@@ -463,7 +436,35 @@ ResultCode KPageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {
// We succeeded, so commit the memory reservation.
memory_reservation.Commit();
- MapPhysicalMemory(page_linked_list, addr, end_addr);
+ // Map the memory.
+ auto node{page_linked_list.Nodes().begin()};
+ PAddr map_addr{node->GetAddress()};
+ std::size_t src_num_pages{node->GetNumPages()};
+ block_manager->IterateForRange(addr, end_addr, [&](const KMemoryInfo& info) {
+ if (info.state != KMemoryState::Free) {
+ return;
+ }
+
+ std::size_t dst_num_pages{GetSizeInRange(info, addr, end_addr) / PageSize};
+ VAddr dst_addr{GetAddressInRange(info, addr)};
+
+ while (dst_num_pages) {
+ if (!src_num_pages) {
+ node = std::next(node);
+ map_addr = node->GetAddress();
+ src_num_pages = node->GetNumPages();
+ }
+
+ const std::size_t num_pages{std::min(src_num_pages, dst_num_pages)};
+ Operate(dst_addr, num_pages, KMemoryPermission::UserReadWrite, OperationType::Map,
+ map_addr);
+
+ dst_addr += num_pages * PageSize;
+ map_addr += num_pages * PageSize;
+ src_num_pages -= num_pages;
+ dst_num_pages -= num_pages;
+ }
+ });
mapped_physical_memory_size += remaining_size;
@@ -503,23 +504,8 @@ ResultCode KPageTable::UnmapPhysicalMemory(VAddr addr, std::size_t size) {
return ResultSuccess;
}
- CASCADE_CODE(UnmapMemory(addr, size));
-
- auto process{system.Kernel().CurrentProcess()};
- process->GetResourceLimit()->Release(LimitableResource::PhysicalMemory, mapped_size);
- mapped_physical_memory_size -= mapped_size;
-
- return ResultSuccess;
-}
-
-ResultCode KPageTable::UnmapMemory(VAddr addr, std::size_t size) {
- std::lock_guard lock{page_table_lock};
-
- const VAddr end_addr{addr + size};
- ResultCode result{ResultSuccess};
- KPageLinkedList page_linked_list;
-
// Unmap each region within the range
+ KPageLinkedList page_linked_list;
block_manager->IterateForRange(addr, end_addr, [&](const KMemoryInfo& info) {
if (info.state == KMemoryState::Normal) {
const std::size_t block_size{GetSizeInRange(info, addr, end_addr)};
@@ -535,7 +521,6 @@ ResultCode KPageTable::UnmapMemory(VAddr addr, std::size_t size) {
}
}
});
-
if (result.IsError()) {
return result;
}
@@ -546,6 +531,10 @@ ResultCode KPageTable::UnmapMemory(VAddr addr, std::size_t size) {
block_manager->Update(addr, num_pages, KMemoryState::Free);
+ auto process{system.Kernel().CurrentProcess()};
+ process->GetResourceLimit()->Release(LimitableResource::PhysicalMemory, mapped_size);
+ mapped_physical_memory_size -= mapped_size;
+
return ResultSuccess;
}
diff --git a/src/core/hle/kernel/k_page_table.h b/src/core/hle/kernel/k_page_table.h
index 1a9740c92..e57d225e6 100644
--- a/src/core/hle/kernel/k_page_table.h
+++ b/src/core/hle/kernel/k_page_table.h
@@ -87,7 +87,6 @@ private:
ResultCode MapPages(VAddr addr, const KPageLinkedList& page_linked_list,
KMemoryPermission perm);
ResultCode UnmapPages(VAddr addr, const KPageLinkedList& page_linked_list);
- void MapPhysicalMemory(KPageLinkedList& page_linked_list, VAddr start, VAddr end);
bool IsRegionMapped(VAddr address, u64 size);
bool IsRegionContiguous(VAddr addr, u64 size) const;
void AddRegionToPages(VAddr start, std::size_t num_pages, KPageLinkedList& page_linked_list);
@@ -147,6 +146,7 @@ private:
}
std::recursive_mutex page_table_lock;
+ std::mutex map_physical_memory_lock;
std::unique_ptr<KMemoryBlockManager> block_manager;
public: