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kern: General system stability improvements to enhance the user's experience.

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Michael Scire 2020-07-24 20:44:15 -07:00 committed by SciresM
parent 2ad9927a88
commit 583899ede3
5 changed files with 20 additions and 4 deletions
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1
libraries/libmesosphere/include/mesosphere/kern_k_memory_manager.hpp
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@ -176,6 +176,7 @@ namespace ams::kern {
NOINLINE void Initialize(KVirtualAddress metadata_region, size_t metadata_region_size);
NOINLINE Result InitializeOptimizedMemory(u64 process_id, Pool pool);
NOINLINE void FinalizeOptimizedMemory(u64 process_id, Pool pool);
NOINLINE KVirtualAddress AllocateContinuous(size_t num_pages, size_t align_pages, u32 option);
NOINLINE Result Allocate(KPageGroup *out, size_t num_pages, u32 option);

1
libraries/libmesosphere/source/arch/arm64/kern_k_page_table.cpp
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@ -498,6 +498,7 @@ namespace ams::kern::arch::arm64 {
const size_t cur_size = std::min(next_entry.block_size - (GetInteger(virt_addr) & (next_entry.block_size - 1)), remaining_pages * PageSize);
remaining_pages -= cur_size / PageSize;
virt_addr += cur_size;
next_valid = impl.ContinueTraversal(std::addressof(next_entry), std::addressof(context));
continue;
}

10
libraries/libmesosphere/source/kern_k_memory_manager.cpp
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@ -106,6 +106,16 @@ namespace ams::kern {
return ResultSuccess();
}
void KMemoryManager::FinalizeOptimizedMemory(u64 process_id, Pool pool) {
/* Lock the pool. */
KScopedLightLock lk(this->pool_locks[pool]);
/* If the process was optimized, clear it. */
if (this->has_optimized_process[pool] && this->optimized_process_ids[pool] == process_id) {
this->has_optimized_process[pool] = false;
}
}
KVirtualAddress KMemoryManager::AllocateContinuous(size_t num_pages, size_t align_pages, u32 option) {
/* Early return if we're allocating no pages. */

1
libraries/libmesosphere/source/kern_k_page_table_base.cpp
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@ -3419,6 +3419,7 @@ namespace ams::kern {
bool next_valid;
size_t tot_size = 0;
cur_address = address;
next_valid = impl.BeginTraversal(std::addressof(next_entry), std::addressof(context), cur_address);
next_entry.block_size = (next_entry.block_size - (GetInteger(next_entry.phys_addr) & (next_entry.block_size - 1)));

5
libraries/libmesosphere/source/kern_k_process.cpp
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@ -105,6 +105,9 @@ namespace ams::kern {
/* Clear our tracking variables. */
this->system_resource_address = Null<KVirtualAddress>;
this->system_resource_num_pages = 0;
/* Finalize optimized memory. If memory wasn't optimized, this is a no-op. */
Kernel::GetMemoryManager().FinalizeOptimizedMemory(this->GetId(), this->memory_pool);
}
/* Release memory to the resource limit. */
@ -359,7 +362,7 @@ namespace ams::kern {
MESOSPHERE_ABORT_UNLESS(this->process_id <= ProcessIdMax);
/* If we should optimize memory allocations, do so. */
if (this->system_resource_address != Null<KVirtualAddress>) {
if (this->system_resource_address != Null<KVirtualAddress> && (params.flags & ams::svc::CreateProcessFlag_OptimizeMemoryAllocation) != 0) {
R_TRY(Kernel::GetMemoryManager().InitializeOptimizedMemory(this->process_id, pool));
}