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VMManager: change MapMemoryBlockToBase to use raw backing memory

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And let ServerSession.MappedBufferContext hold the mapped memory
This commit is contained in:
Weiyi Wang 2018-11-08 14:05:54 -05:00
parent 0b8d2ecabe
commit 7f9873d7ec
4 changed files with 27 additions and 24 deletions
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32
src/core/hle/kernel/ipc.cpp
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@ -181,29 +181,31 @@ ResultCode TranslateCommandBuffer(SharedPtr<Thread> src_thread, SharedPtr<Thread
// TODO(Subv): Perform permission checks.
// Reserve a page of memory before the mapped buffer
auto reserve_buffer = std::make_shared<std::vector<u8>>(Memory::PAGE_SIZE);
dst_process->vm_manager.MapMemoryBlockToBase(
Memory::IPC_MAPPING_VADDR, Memory::IPC_MAPPING_SIZE, reserve_buffer, 0,
static_cast<u32>(reserve_buffer->size()), Kernel::MemoryState::Reserved);
auto reserve_buffer = std::make_unique<u8[]>(Memory::PAGE_SIZE);
dst_process->vm_manager.MapBackingMemoryToBase(
Memory::IPC_MAPPING_VADDR, Memory::IPC_MAPPING_SIZE, reserve_buffer.get(),
Memory::PAGE_SIZE, Kernel::MemoryState::Reserved);
auto buffer = std::make_shared<std::vector<u8>>(num_pages * Memory::PAGE_SIZE);
Memory::ReadBlock(*src_process, source_address, buffer->data() + page_offset, size);
auto buffer = std::make_unique<u8[]>(num_pages * Memory::PAGE_SIZE);
Memory::ReadBlock(*src_process, source_address, buffer.get() + page_offset, size);
// Map the page(s) into the target process' address space.
target_address = dst_process->vm_manager
.MapMemoryBlockToBase(
Memory::IPC_MAPPING_VADDR, Memory::IPC_MAPPING_SIZE, buffer, 0,
static_cast<u32>(buffer->size()), Kernel::MemoryState::Shared)
.Unwrap();
target_address =
dst_process->vm_manager
.MapBackingMemoryToBase(Memory::IPC_MAPPING_VADDR, Memory::IPC_MAPPING_SIZE,
buffer.get(), num_pages * Memory::PAGE_SIZE,
Kernel::MemoryState::Shared)
.Unwrap();
cmd_buf[i++] = target_address + page_offset;
// Reserve a page of memory after the mapped buffer
dst_process->vm_manager.MapMemoryBlockToBase(
Memory::IPC_MAPPING_VADDR, Memory::IPC_MAPPING_SIZE, reserve_buffer, 0,
static_cast<u32>(reserve_buffer->size()), Kernel::MemoryState::Reserved);
dst_process->vm_manager.MapBackingMemoryToBase(
Memory::IPC_MAPPING_VADDR, Memory::IPC_MAPPING_SIZE, reserve_buffer.get(),
Memory::PAGE_SIZE, Kernel::MemoryState::Reserved);
mapped_buffer_context.push_back({permissions, size, source_address, target_address});
mapped_buffer_context.push_back({permissions, size, source_address, target_address,
std::move(buffer), std::move(reserve_buffer)});
break;
}