diff options
Diffstat (limited to 'src/core/hle/kernel/memory/page_table.cpp')
| -rw-r--r-- | src/core/hle/kernel/memory/page_table.cpp | 85 |
1 files changed, 45 insertions, 40 deletions
diff --git a/src/core/hle/kernel/memory/page_table.cpp b/src/core/hle/kernel/memory/page_table.cpp index 7de91c768..00ed9b881 100644 --- a/src/core/hle/kernel/memory/page_table.cpp +++ b/src/core/hle/kernel/memory/page_table.cpp @@ -6,8 +6,7 @@ #include "common/assert.h" #include "common/scope_exit.h" #include "core/core.h" -#include "core/hle/kernel/errors.h" -#include "core/hle/kernel/k_resource_limit.h" +#include "core/hle/kernel/k_scoped_resource_reservation.h" #include "core/hle/kernel/kernel.h" #include "core/hle/kernel/memory/address_space_info.h" #include "core/hle/kernel/memory/memory_block.h" @@ -16,6 +15,7 @@ #include "core/hle/kernel/memory/page_table.h" #include "core/hle/kernel/memory/system_control.h" #include "core/hle/kernel/process.h" +#include "core/hle/kernel/svc_results.h" #include "core/memory.h" namespace Kernel::Memory { @@ -141,7 +141,7 @@ ResultCode PageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_t (alias_region_size + heap_region_size + stack_region_size + kernel_map_region_size)}; if (alloc_size < needed_size) { UNREACHABLE(); - return ERR_OUT_OF_MEMORY; + return ResultOutOfMemory; } const std::size_t remaining_size{alloc_size - needed_size}; @@ -277,11 +277,11 @@ ResultCode PageTable::MapProcessCode(VAddr addr, std::size_t num_pages, MemorySt const u64 size{num_pages * PageSize}; if (!CanContain(addr, size, state)) { - return ERR_INVALID_ADDRESS_STATE; + return ResultInvalidCurrentMemory; } if (IsRegionMapped(addr, size)) { - return ERR_INVALID_ADDRESS_STATE; + return ResultInvalidCurrentMemory; } PageLinkedList page_linked_list; @@ -307,7 +307,7 @@ ResultCode PageTable::MapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std:: MemoryAttribute::None, MemoryAttribute::IpcAndDeviceMapped)); if (IsRegionMapped(dst_addr, size)) { - return ERR_INVALID_ADDRESS_STATE; + return ResultInvalidCurrentMemory; } PageLinkedList page_linked_list; @@ -409,27 +409,25 @@ ResultCode PageTable::MapPhysicalMemory(VAddr addr, std::size_t size) { return RESULT_SUCCESS; } - auto process{system.Kernel().CurrentProcess()}; const std::size_t remaining_size{size - mapped_size}; const std::size_t remaining_pages{remaining_size / PageSize}; - if (process->GetResourceLimit() && - !process->GetResourceLimit()->Reserve(LimitableResource::PhysicalMemory, remaining_size)) { - return ERR_RESOURCE_LIMIT_EXCEEDED; + // Reserve the memory from the process resource limit. + KScopedResourceReservation memory_reservation( + system.Kernel().CurrentProcess()->GetResourceLimit(), LimitableResource::PhysicalMemory, + remaining_size); + if (!memory_reservation.Succeeded()) { + LOG_ERROR(Kernel, "Could not reserve remaining {:X} bytes", remaining_size); + return ResultResourceLimitedExceeded; } PageLinkedList page_linked_list; - { - auto block_guard = detail::ScopeExit([&] { - system.Kernel().MemoryManager().Free(page_linked_list, remaining_pages, memory_pool); - process->GetResourceLimit()->Release(LimitableResource::PhysicalMemory, remaining_size); - }); - CASCADE_CODE(system.Kernel().MemoryManager().Allocate(page_linked_list, remaining_pages, - memory_pool)); + CASCADE_CODE( + system.Kernel().MemoryManager().Allocate(page_linked_list, remaining_pages, memory_pool)); - block_guard.Cancel(); - } + // We succeeded, so commit the memory reservation. + memory_reservation.Commit(); MapPhysicalMemory(page_linked_list, addr, end_addr); @@ -454,12 +452,12 @@ ResultCode PageTable::UnmapPhysicalMemory(VAddr addr, std::size_t size) { block_manager->IterateForRange(addr, end_addr, [&](const MemoryInfo& info) { if (info.state == MemoryState::Normal) { if (info.attribute != MemoryAttribute::None) { - result = ERR_INVALID_ADDRESS_STATE; + result = ResultInvalidCurrentMemory; return; } mapped_size += GetSizeInRange(info, addr, end_addr); } else if (info.state != MemoryState::Free) { - result = ERR_INVALID_ADDRESS_STATE; + result = ResultInvalidCurrentMemory; } }); @@ -526,7 +524,7 @@ ResultCode PageTable::Map(VAddr dst_addr, VAddr src_addr, std::size_t size) { MemoryAttribute::Mask, MemoryAttribute::None, MemoryAttribute::IpcAndDeviceMapped)); if (IsRegionMapped(dst_addr, size)) { - return ERR_INVALID_ADDRESS_STATE; + return ResultInvalidCurrentMemory; } PageLinkedList page_linked_list; @@ -577,7 +575,7 @@ ResultCode PageTable::Unmap(VAddr dst_addr, VAddr src_addr, std::size_t size) { AddRegionToPages(dst_addr, num_pages, dst_pages); if (!dst_pages.IsEqual(src_pages)) { - return ERR_INVALID_MEMORY_RANGE; + return ResultInvalidMemoryRange; } { @@ -626,11 +624,11 @@ ResultCode PageTable::MapPages(VAddr addr, PageLinkedList& page_linked_list, Mem const std::size_t size{num_pages * PageSize}; if (!CanContain(addr, size, state)) { - return ERR_INVALID_ADDRESS_STATE; + return ResultInvalidCurrentMemory; } if (IsRegionMapped(addr, num_pages * PageSize)) { - return ERR_INVALID_ADDRESS_STATE; + return ResultInvalidCurrentMemory; } CASCADE_CODE(MapPages(addr, page_linked_list, perm)); @@ -768,7 +766,7 @@ ResultCode PageTable::SetHeapCapacity(std::size_t new_heap_capacity) { ResultVal<VAddr> PageTable::SetHeapSize(std::size_t size) { if (size > heap_region_end - heap_region_start) { - return ERR_OUT_OF_MEMORY; + return ResultOutOfMemory; } const u64 previous_heap_size{GetHeapSize()}; @@ -781,10 +779,14 @@ ResultVal<VAddr> PageTable::SetHeapSize(std::size_t size) { const u64 delta{size - previous_heap_size}; - auto process{system.Kernel().CurrentProcess()}; - if (process->GetResourceLimit() && delta != 0 && - !process->GetResourceLimit()->Reserve(LimitableResource::PhysicalMemory, delta)) { - return ERR_RESOURCE_LIMIT_EXCEEDED; + // Reserve memory for the heap extension. + KScopedResourceReservation memory_reservation( + system.Kernel().CurrentProcess()->GetResourceLimit(), LimitableResource::PhysicalMemory, + delta); + + if (!memory_reservation.Succeeded()) { + LOG_ERROR(Kernel, "Could not reserve heap extension of size {:X} bytes", delta); + return ResultResourceLimitedExceeded; } PageLinkedList page_linked_list; @@ -794,12 +796,15 @@ ResultVal<VAddr> PageTable::SetHeapSize(std::size_t size) { system.Kernel().MemoryManager().Allocate(page_linked_list, num_pages, memory_pool)); if (IsRegionMapped(current_heap_addr, delta)) { - return ERR_INVALID_ADDRESS_STATE; + return ResultInvalidCurrentMemory; } CASCADE_CODE( Operate(current_heap_addr, num_pages, page_linked_list, OperationType::MapGroup)); + // Succeeded in allocation, commit the resource reservation + memory_reservation.Commit(); + block_manager->Update(current_heap_addr, num_pages, MemoryState::Normal, MemoryPermission::ReadAndWrite); @@ -816,17 +821,17 @@ ResultVal<VAddr> PageTable::AllocateAndMapMemory(std::size_t needed_num_pages, s std::lock_guard lock{page_table_lock}; if (!CanContain(region_start, region_num_pages * PageSize, state)) { - return ERR_INVALID_ADDRESS_STATE; + return ResultInvalidCurrentMemory; } if (region_num_pages <= needed_num_pages) { - return ERR_OUT_OF_MEMORY; + return ResultOutOfMemory; } const VAddr addr{ AllocateVirtualMemory(region_start, region_num_pages, needed_num_pages, align)}; if (!addr) { - return ERR_OUT_OF_MEMORY; + return ResultOutOfMemory; } if (is_map_only) { @@ -1105,13 +1110,13 @@ constexpr ResultCode PageTable::CheckMemoryState(const MemoryInfo& info, MemoryS MemoryAttribute attr) const { // Validate the states match expectation if ((info.state & state_mask) != state) { - return ERR_INVALID_ADDRESS_STATE; + return ResultInvalidCurrentMemory; } if ((info.perm & perm_mask) != perm) { - return ERR_INVALID_ADDRESS_STATE; + return ResultInvalidCurrentMemory; } if ((info.attribute & attr_mask) != attr) { - return ERR_INVALID_ADDRESS_STATE; + return ResultInvalidCurrentMemory; } return RESULT_SUCCESS; @@ -1138,14 +1143,14 @@ ResultCode PageTable::CheckMemoryState(MemoryState* out_state, MemoryPermission* while (true) { // Validate the current block if (!(info.state == first_state)) { - return ERR_INVALID_ADDRESS_STATE; + return ResultInvalidCurrentMemory; } if (!(info.perm == first_perm)) { - return ERR_INVALID_ADDRESS_STATE; + return ResultInvalidCurrentMemory; } if (!((info.attribute | static_cast<MemoryAttribute>(ignore_attr)) == (first_attr | static_cast<MemoryAttribute>(ignore_attr)))) { - return ERR_INVALID_ADDRESS_STATE; + return ResultInvalidCurrentMemory; } // Validate against the provided masks |