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kern: Update page bitmaps/alloc to reflect 10.0.0 changes

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This commit is contained in:
Michael Scire 2020-04-18 17:10:26 -07:00
parent 3da0cda4ae
commit 152a945561
18 changed files with 498 additions and 267 deletions
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35
libraries/libmesosphere/source/kern_k_memory_manager.cpp
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@ -104,7 +104,7 @@ namespace ams::kern {
Impl *chosen_manager = nullptr;
KVirtualAddress allocated_block = Null<KVirtualAddress>;
for (chosen_manager = this->GetFirstManager(pool, dir); chosen_manager != nullptr; chosen_manager = this->GetNextManager(chosen_manager, dir)) {
allocated_block = chosen_manager->AllocateBlock(heap_index);
allocated_block = chosen_manager->AllocateBlock(heap_index, true);
if (allocated_block != Null<KVirtualAddress>) {
break;
}
@ -129,19 +129,7 @@ namespace ams::kern {
return allocated_block;
}
Result KMemoryManager::Allocate(KPageGroup *out, size_t num_pages, u32 option) {
MESOSPHERE_ASSERT(out != nullptr);
MESOSPHERE_ASSERT(out->GetNumPages() == 0);
/* Early return if we're allocating no pages. */
if (num_pages == 0) {
return ResultSuccess();
}
/* Lock the pool that we're allocating from. */
const auto [pool, dir] = DecodeOption(option);
KScopedLightLock lk(this->pool_locks[pool]);
Result KMemoryManager::AllocatePageGroupImpl(KPageGroup *out, size_t num_pages, Pool pool, Direction dir, bool optimize, bool random) {
/* Choose a heap based on our page size request. */
const s32 heap_index = KPageHeap::GetBlockIndex(num_pages);
R_UNLESS(0 <= heap_index, svc::ResultOutOfMemory());
@ -162,7 +150,7 @@ namespace ams::kern {
for (Impl *cur_manager = this->GetFirstManager(pool, dir); cur_manager != nullptr; cur_manager = this->GetNextManager(cur_manager, dir)) {
while (num_pages >= pages_per_alloc) {
/* Allocate a block. */
KVirtualAddress allocated_block = cur_manager->AllocateBlock(index);
KVirtualAddress allocated_block = cur_manager->AllocateBlock(index, random);
if (allocated_block == Null<KVirtualAddress>) {
break;
}
@ -175,7 +163,7 @@ namespace ams::kern {
}
/* Maintain the optimized memory bitmap, if we should. */
if (this->has_optimized_process[pool]) {
if (optimize) {
cur_manager->TrackAllocationForOptimizedProcess(allocated_block, pages_per_alloc);
}
@ -193,6 +181,21 @@ namespace ams::kern {
return ResultSuccess();
}
Result KMemoryManager::Allocate(KPageGroup *out, size_t num_pages, u32 option) {
MESOSPHERE_ASSERT(out != nullptr);
MESOSPHERE_ASSERT(out->GetNumPages() == 0);
/* Early return if we're allocating no pages. */
R_SUCCEED_IF(num_pages == 0);
/* Lock the pool that we're allocating from. */
const auto [pool, dir] = DecodeOption(option);
KScopedLightLock lk(this->pool_locks[pool]);
/* Allocate the page group. */
return this->AllocatePageGroupImpl(out, num_pages, pool, dir, this->has_optimized_process[pool], true);
}
size_t KMemoryManager::Impl::Initialize(const KMemoryRegion *region, Pool p, KVirtualAddress metadata, KVirtualAddress metadata_end) {
/* Calculate metadata sizes. */
const size_t ref_count_size = (region->GetSize() / PageSize) * sizeof(u16);