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VM_Manager: Align allocated memory to 256bytes

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This commit ensures that all backing memory allocated for the Guest CPU
is aligned to 256 bytes. This due to how gpu memory works and the heavy
constraints it has in the alignment of physical memory.
This commit is contained in:
Fernando Sahmkow
2019-07-18 18:15:53 -04:00
committed by FernandoS27
parent 5d369112d9
commit 9bede4eeed
15 changed files with 131 additions and 36 deletions
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9
src/core/hle/kernel/vm_manager.h
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@ -11,6 +11,7 @@
#include "common/common_types.h"
#include "common/memory_hook.h"
#include "common/page_table.h"
#include "core/hle/kernel/physical_memory.h"
#include "core/hle/result.h"
#include "core/memory.h"
@ -290,7 +291,7 @@ struct VirtualMemoryArea {
// Settings for type = AllocatedMemoryBlock
/// Memory block backing this VMA.
std::shared_ptr<std::vector<u8>> backing_block = nullptr;
std::shared_ptr<PhysicalMemory> backing_block = nullptr;
/// Offset into the backing_memory the mapping starts from.
std::size_t offset = 0;
@ -348,7 +349,7 @@ public:
* @param size Size of the mapping.
* @param state MemoryState tag to attach to the VMA.
*/
ResultVal<VMAHandle> MapMemoryBlock(VAddr target, std::shared_ptr<std::vector<u8>> block,
ResultVal<VMAHandle> MapMemoryBlock(VAddr target, std::shared_ptr<PhysicalMemory> block,
std::size_t offset, u64 size, MemoryState state,
VMAPermission perm = VMAPermission::ReadWrite);
@ -547,7 +548,7 @@ public:
* Scans all VMAs and updates the page table range of any that use the given vector as backing
* memory. This should be called after any operation that causes reallocation of the vector.
*/
void RefreshMemoryBlockMappings(const std::vector<u8>* block);
void RefreshMemoryBlockMappings(const PhysicalMemory* block);
/// Dumps the address space layout to the log, for debugging
void LogLayout() const;
@ -777,7 +778,7 @@ private:
// the entire virtual address space extents that bound the allocations, including any holes.
// This makes deallocation and reallocation of holes fast and keeps process memory contiguous
// in the emulator address space, allowing Memory::GetPointer to be reasonably safe.
std::shared_ptr<std::vector<u8>> heap_memory;
std::shared_ptr<PhysicalMemory> heap_memory;
// The end of the currently allocated heap. This is not an inclusive
// end of the range. This is essentially 'base_address + current_size'.