diff options
| -rw-r--r-- | src/core/hle/kernel/k_page_table.cpp | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/src/core/hle/kernel/k_page_table.cpp b/src/core/hle/kernel/k_page_table.cpp index 223c0d491..d78c5e37a 100644 --- a/src/core/hle/kernel/k_page_table.cpp +++ b/src/core/hle/kernel/k_page_table.cpp @@ -276,22 +276,23 @@ ResultCode KPageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_ ResultCode KPageTable::MapProcessCode(VAddr addr, std::size_t num_pages, KMemoryState state, KMemoryPermission perm) { - std::lock_guard lock{page_table_lock}; - const u64 size{num_pages * PageSize}; - if (!CanContain(addr, size, state)) { - return ResultInvalidCurrentMemory; - } + // Validate the mapping request. + R_UNLESS(this->CanContain(addr, size, state), ResultInvalidCurrentMemory); - if (IsRegionMapped(addr, size)) { - return ResultInvalidCurrentMemory; - } + // Lock the table. + std::lock_guard lock{page_table_lock}; + + // Verify that the destination memory is unmapped. + R_TRY(this->CheckMemoryState(addr, size, KMemoryState::All, KMemoryState::Free, + KMemoryPermission::None, KMemoryPermission::None, + KMemoryAttribute::None, KMemoryAttribute::None)); KPageLinkedList page_linked_list; - CASCADE_CODE(system.Kernel().MemoryManager().Allocate(page_linked_list, num_pages, memory_pool, - allocation_option)); - CASCADE_CODE(Operate(addr, num_pages, page_linked_list, OperationType::MapGroup)); + R_TRY(system.Kernel().MemoryManager().Allocate(page_linked_list, num_pages, memory_pool, + allocation_option)); + R_TRY(Operate(addr, num_pages, page_linked_list, OperationType::MapGroup)); block_manager->Update(addr, num_pages, state, perm); |