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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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15
src/core/hle/kernel/vm_manager.cpp
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@ -5,6 +5,7 @@
#include <algorithm>
#include <iterator>
#include <utility>
#include "common/alignment.h"
#include "common/assert.h"
#include "common/logging/log.h"
#include "common/memory_hook.h"
@ -103,7 +104,7 @@ bool VMManager::IsValidHandle(VMAHandle handle) const {
}
ResultVal<VMManager::VMAHandle> VMManager::MapMemoryBlock(VAddr target,
std::shared_ptr<std::vector<u8>> block,
std::shared_ptr<PhysicalMemory> block,
std::size_t offset, u64 size,
MemoryState state, VMAPermission perm) {
ASSERT(block != nullptr);
@ -260,7 +261,7 @@ ResultVal<VAddr> VMManager::SetHeapSize(u64 size) {
if (heap_memory == nullptr) {
// Initialize heap
heap_memory = std::make_shared<std::vector<u8>>(size);
heap_memory = std::make_shared<PhysicalMemory>(size);
heap_end = heap_region_base + size;
} else {
UnmapRange(heap_region_base, GetCurrentHeapSize());
@ -341,7 +342,7 @@ ResultCode VMManager::MapPhysicalMemory(VAddr target, u64 size) {
const auto map_size = std::min(end_addr - cur_addr, vma_end - cur_addr);
if (vma.state == MemoryState::Unmapped) {
const auto map_res =
MapMemoryBlock(cur_addr, std::make_shared<std::vector<u8>>(map_size, 0), 0,
MapMemoryBlock(cur_addr, std::make_shared<PhysicalMemory>(map_size, 0), 0,
map_size, MemoryState::Heap, VMAPermission::ReadWrite);
result = map_res.Code();
if (result.IsError()) {
@ -442,7 +443,7 @@ ResultCode VMManager::UnmapPhysicalMemory(VAddr target, u64 size) {
if (result.IsError()) {
for (const auto [map_address, map_size] : unmapped_regions) {
const auto remap_res =
MapMemoryBlock(map_address, std::make_shared<std::vector<u8>>(map_size, 0), 0,
MapMemoryBlock(map_address, std::make_shared<PhysicalMemory>(map_size, 0), 0,
map_size, MemoryState::Heap, VMAPermission::None);
ASSERT_MSG(remap_res.Succeeded(), "UnmapPhysicalMemory re-map on error");
}
@ -593,7 +594,7 @@ ResultCode VMManager::MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size, Mem
ASSERT_MSG(vma_offset + size <= vma->second.size,
"Shared memory exceeds bounds of mapped block");
const std::shared_ptr<std::vector<u8>>& backing_block = vma->second.backing_block;
const std::shared_ptr<PhysicalMemory>& backing_block = vma->second.backing_block;
const std::size_t backing_block_offset = vma->second.offset + vma_offset;
CASCADE_RESULT(auto new_vma,
@ -606,7 +607,7 @@ ResultCode VMManager::MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size, Mem
return RESULT_SUCCESS;
}
void VMManager::RefreshMemoryBlockMappings(const std::vector<u8>* block) {
void VMManager::RefreshMemoryBlockMappings(const PhysicalMemory* block) {
// If this ever proves to have a noticeable performance impact, allow users of the function to
// specify a specific range of addresses to limit the scan to.
for (const auto& p : vma_map) {
@ -764,7 +765,7 @@ void VMManager::MergeAdjacentVMA(VirtualMemoryArea& left, const VirtualMemoryAre
right.backing_block->begin() + right.offset + right.size);
} else {
// Slow case: make a new memory block for left and right.
auto new_memory = std::make_shared<std::vector<u8>>();
auto new_memory = std::make_shared<PhysicalMemory>();
new_memory->insert(new_memory->end(), left.backing_block->begin() + left.offset,
left.backing_block->begin() + left.offset + left.size);
new_memory->insert(new_memory->end(), right.backing_block->begin() + right.offset,