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hle: kernel: KPageTable: Migrate locks to KScopedLightLock.
- More accurately reflects real kernel behavior by using guest locks.
This commit is contained in:
bunnei
parent
50e9ba34b4
commit
995e27e9b7
2 changed files with 46 additions and 34 deletions
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@ -61,7 +61,8 @@ constexpr std::size_t GetSizeInRange(const KMemoryInfo& info, VAddr start, VAddr
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} // namespace
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KPageTable::KPageTable(Core::System& system_) : system{system_} {}
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KPageTable::KPageTable(Core::System& system_)
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: general_lock{system_.Kernel()}, map_physical_memory_lock{system_.Kernel()}, system{system_} {}
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ResultCode KPageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_type,
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bool enable_aslr, VAddr code_addr,
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@ -282,7 +283,7 @@ ResultCode KPageTable::MapProcessCode(VAddr addr, std::size_t num_pages, KMemory
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R_UNLESS(this->CanContain(addr, size, state), ResultInvalidCurrentMemory);
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// Lock the table.
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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// Verify that the destination memory is unmapped.
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R_TRY(this->CheckMemoryState(addr, size, KMemoryState::All, KMemoryState::Free,
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@ -300,7 +301,7 @@ ResultCode KPageTable::MapProcessCode(VAddr addr, std::size_t num_pages, KMemory
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}
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ResultCode KPageTable::MapCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size) {
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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const std::size_t num_pages{size / PageSize};
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@ -337,7 +338,7 @@ ResultCode KPageTable::MapCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t
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}
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ResultCode KPageTable::UnmapCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size) {
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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if (!size) {
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return ResultSuccess;
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@ -371,7 +372,7 @@ ResultCode KPageTable::UnmapCodeMemory(VAddr dst_addr, VAddr src_addr, std::size
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ResultCode KPageTable::UnmapProcessMemory(VAddr dst_addr, std::size_t size,
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KPageTable& src_page_table, VAddr src_addr) {
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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const std::size_t num_pages{size / PageSize};
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@ -399,10 +400,10 @@ ResultCode KPageTable::UnmapProcessMemory(VAddr dst_addr, std::size_t size,
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ResultCode KPageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {
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// Lock the physical memory lock.
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std::lock_guard phys_lk(map_physical_memory_lock);
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KScopedLightLock map_phys_mem_lk(map_physical_memory_lock);
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// Lock the table.
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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std::size_t mapped_size{};
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const VAddr end_addr{addr + size};
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@ -478,7 +479,11 @@ ResultCode KPageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {
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}
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ResultCode KPageTable::UnmapPhysicalMemory(VAddr addr, std::size_t size) {
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std::lock_guard lock{page_table_lock};
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// Lock the physical memory lock.
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KScopedLightLock map_phys_mem_lk(map_physical_memory_lock);
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// Lock the table.
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KScopedLightLock lk(general_lock);
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const VAddr end_addr{addr + size};
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ResultCode result{ResultSuccess};
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@ -540,7 +545,7 @@ ResultCode KPageTable::UnmapPhysicalMemory(VAddr addr, std::size_t size) {
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}
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ResultCode KPageTable::MapMemory(VAddr dst_addr, VAddr src_addr, std::size_t size) {
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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KMemoryState src_state{};
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CASCADE_CODE(CheckMemoryState(
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@ -579,7 +584,7 @@ ResultCode KPageTable::MapMemory(VAddr dst_addr, VAddr src_addr, std::size_t siz
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}
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ResultCode KPageTable::UnmapMemory(VAddr dst_addr, VAddr src_addr, std::size_t size) {
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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KMemoryState src_state{};
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CASCADE_CODE(CheckMemoryState(
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@ -622,6 +627,8 @@ ResultCode KPageTable::UnmapMemory(VAddr dst_addr, VAddr src_addr, std::size_t s
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ResultCode KPageTable::MapPages(VAddr addr, const KPageLinkedList& page_linked_list,
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KMemoryPermission perm) {
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ASSERT(this->IsLockedByCurrentThread());
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VAddr cur_addr{addr};
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for (const auto& node : page_linked_list.Nodes()) {
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@ -650,7 +657,7 @@ ResultCode KPageTable::MapPages(VAddr address, KPageLinkedList& page_linked_list
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R_UNLESS(this->CanContain(address, size, state), ResultInvalidCurrentMemory);
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// Lock the table.
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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// Check the memory state.
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R_TRY(this->CheckMemoryState(address, size, KMemoryState::All, KMemoryState::Free,
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@ -667,6 +674,8 @@ ResultCode KPageTable::MapPages(VAddr address, KPageLinkedList& page_linked_list
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}
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ResultCode KPageTable::UnmapPages(VAddr addr, const KPageLinkedList& page_linked_list) {
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ASSERT(this->IsLockedByCurrentThread());
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VAddr cur_addr{addr};
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for (const auto& node : page_linked_list.Nodes()) {
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@ -691,7 +700,7 @@ ResultCode KPageTable::UnmapPages(VAddr addr, KPageLinkedList& page_linked_list,
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R_UNLESS(this->Contains(addr, size), ResultInvalidCurrentMemory);
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// Lock the table.
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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// Check the memory state.
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R_TRY(this->CheckMemoryState(addr, size, KMemoryState::All, state, KMemoryPermission::None,
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@ -712,7 +721,7 @@ ResultCode KPageTable::SetProcessMemoryPermission(VAddr addr, std::size_t size,
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const size_t num_pages = size / PageSize;
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// Lock the table.
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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// Verify we can change the memory permission.
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KMemoryState old_state;
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@ -766,7 +775,7 @@ ResultCode KPageTable::SetProcessMemoryPermission(VAddr addr, std::size_t size,
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}
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KMemoryInfo KPageTable::QueryInfoImpl(VAddr addr) {
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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return block_manager->FindBlock(addr).GetMemoryInfo();
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}
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@ -781,7 +790,7 @@ KMemoryInfo KPageTable::QueryInfo(VAddr addr) {
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}
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ResultCode KPageTable::ReserveTransferMemory(VAddr addr, std::size_t size, KMemoryPermission perm) {
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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KMemoryState state{};
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KMemoryAttribute attribute{};
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@ -799,7 +808,7 @@ ResultCode KPageTable::ReserveTransferMemory(VAddr addr, std::size_t size, KMemo
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}
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ResultCode KPageTable::ResetTransferMemory(VAddr addr, std::size_t size) {
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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KMemoryState state{};
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@ -818,7 +827,7 @@ ResultCode KPageTable::SetMemoryPermission(VAddr addr, std::size_t size,
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const size_t num_pages = size / PageSize;
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// Lock the table.
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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// Verify we can change the memory permission.
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KMemoryState old_state;
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@ -847,7 +856,7 @@ ResultCode KPageTable::SetMemoryAttribute(VAddr addr, std::size_t size, u32 mask
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KMemoryAttribute::SetMask);
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// Lock the table.
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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// Verify we can change the memory attribute.
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KMemoryState old_state;
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@ -878,7 +887,7 @@ ResultCode KPageTable::SetMemoryAttribute(VAddr addr, std::size_t size, u32 mask
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ResultCode KPageTable::SetMaxHeapSize(std::size_t size) {
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// Lock the table.
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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// Only process page tables are allowed to set heap size.
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ASSERT(!this->IsKernel());
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@ -889,15 +898,15 @@ ResultCode KPageTable::SetMaxHeapSize(std::size_t size) {
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}
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ResultCode KPageTable::SetHeapSize(VAddr* out, std::size_t size) {
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// Lock the physical memory lock.
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std::lock_guard phys_lk(map_physical_memory_lock);
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// Lock the physical memory mutex.
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KScopedLightLock map_phys_mem_lk(map_physical_memory_lock);
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// Try to perform a reduction in heap, instead of an extension.
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VAddr cur_address{};
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std::size_t allocation_size{};
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{
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// Lock the table.
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std::lock_guard lk(page_table_lock);
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KScopedLightLock lk(general_lock);
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// Validate that setting heap size is possible at all.
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R_UNLESS(!is_kernel, ResultOutOfMemory);
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@ -962,7 +971,7 @@ ResultCode KPageTable::SetHeapSize(VAddr* out, std::size_t size) {
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// Map the pages.
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{
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// Lock the table.
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std::lock_guard lk(page_table_lock);
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KScopedLightLock lk(general_lock);
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// Ensure that the heap hasn't changed since we began executing.
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ASSERT(cur_address == current_heap_end);
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@ -1004,7 +1013,7 @@ ResultVal<VAddr> KPageTable::AllocateAndMapMemory(std::size_t needed_num_pages,
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bool is_map_only, VAddr region_start,
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std::size_t region_num_pages, KMemoryState state,
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KMemoryPermission perm, PAddr map_addr) {
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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if (!CanContain(region_start, region_num_pages * PageSize, state)) {
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return ResultInvalidCurrentMemory;
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@ -1035,7 +1044,7 @@ ResultVal<VAddr> KPageTable::AllocateAndMapMemory(std::size_t needed_num_pages,
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}
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ResultCode KPageTable::LockForDeviceAddressSpace(VAddr addr, std::size_t size) {
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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KMemoryPermission perm{};
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if (const ResultCode result{CheckMemoryState(
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@ -1058,7 +1067,7 @@ ResultCode KPageTable::LockForDeviceAddressSpace(VAddr addr, std::size_t size) {
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}
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ResultCode KPageTable::UnlockForDeviceAddressSpace(VAddr addr, std::size_t size) {
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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KMemoryPermission perm{};
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if (const ResultCode result{CheckMemoryState(
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@ -1081,7 +1090,7 @@ ResultCode KPageTable::UnlockForDeviceAddressSpace(VAddr addr, std::size_t size)
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}
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ResultCode KPageTable::LockForCodeMemory(VAddr addr, std::size_t size) {
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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KMemoryPermission new_perm = KMemoryPermission::NotMapped | KMemoryPermission::KernelReadWrite;
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@ -1108,7 +1117,7 @@ ResultCode KPageTable::LockForCodeMemory(VAddr addr, std::size_t size) {
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}
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ResultCode KPageTable::UnlockForCodeMemory(VAddr addr, std::size_t size) {
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std::lock_guard lock{page_table_lock};
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KScopedLightLock lk(general_lock);
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KMemoryPermission new_perm = KMemoryPermission::UserReadWrite;
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@ -5,11 +5,11 @@
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#pragma once
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#include <memory>
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#include <mutex>
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#include "common/common_types.h"
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#include "common/page_table.h"
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#include "core/file_sys/program_metadata.h"
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#include "core/hle/kernel/k_light_lock.h"
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#include "core/hle/kernel/k_memory_block.h"
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#include "core/hle/kernel/k_memory_manager.h"
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#include "core/hle/result.h"
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@ -142,11 +142,12 @@ private:
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}
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bool IsLockedByCurrentThread() const {
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return true;
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return general_lock.IsLockedByCurrentThread();
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}
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std::recursive_mutex page_table_lock;
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std::mutex map_physical_memory_lock;
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mutable KLightLock general_lock;
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mutable KLightLock map_physical_memory_lock;
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std::unique_ptr<KMemoryBlockManager> block_manager;
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public:
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@ -205,7 +206,7 @@ public:
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return alias_code_region_end - alias_code_region_start;
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}
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size_t GetNormalMemorySize() {
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std::lock_guard lk(page_table_lock);
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KScopedLightLock lk(general_lock);
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return GetHeapSize() + mapped_physical_memory_size;
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}
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constexpr std::size_t GetAddressSpaceWidth() const {
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@ -247,7 +248,9 @@ public:
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constexpr bool IsInsideASLRRegion(VAddr address, std::size_t size) const {
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return !IsOutsideASLRRegion(address, size);
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}
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constexpr PAddr GetPhysicalAddr(VAddr addr) {
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PAddr GetPhysicalAddr(VAddr addr) {
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ASSERT(IsLockedByCurrentThread());
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const auto backing_addr = page_table_impl.backing_addr[addr >> PageBits];
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ASSERT(backing_addr);
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return backing_addr + addr;
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