OpenPunk/yuzu
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

kernel/process: Replace process resource limit instance with the kernel's resource limit

Browse Source 
This commit addresses the inaccurate behavior of kernel processes creating their own resource limit, rather than utilizing the kernel's system-wide resource limit instance.
This commit is contained in:
ameerj
2021-04-12 16:14:19 -04:00
parent ddbd1387aa
commit 5e85bc3d23
2 changed files with 27 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
src/core/hle/kernel/kernel.cpp
View File

@@ -67,8 +67,13 @@ struct KernelCore::Impl {
is_phantom_mode_for_singlecore = false;
InitializePhysicalCores();
InitializeSystemResourceLimit(kernel, system);
InitializeMemoryLayout();
// Derive the initial memory layout from the emulated board
KMemoryLayout memory_layout;
DeriveInitialMemoryLayout(memory_layout);
InitializeMemoryLayout(memory_layout);
InitializeSystemResourceLimit(kernel, system, memory_layout);
InitializeSlabHeaps();
InitializeSchedulers();
InitializeSuspendThreads();
InitializePreemption(kernel);
@@ -137,27 +142,32 @@ struct KernelCore::Impl {
}
// Creates the default system resource limit
void InitializeSystemResourceLimit(KernelCore& kernel, Core::System& system) {
void InitializeSystemResourceLimit(KernelCore& kernel, Core::System& system,
const KMemoryLayout& memory_layout) {
system_resource_limit = std::make_shared<KResourceLimit>(kernel, system);
const auto [total_size, kernel_size] = memory_layout.GetTotalAndKernelMemorySizes();
// If setting the default system values fails, then something seriously wrong has occurred.
ASSERT(system_resource_limit->SetLimitValue(LimitableResource::PhysicalMemory, 0x100000000)
ASSERT(system_resource_limit->SetLimitValue(LimitableResource::PhysicalMemory, total_size)
.IsSuccess());
ASSERT(system_resource_limit->SetLimitValue(LimitableResource::Threads, 800).IsSuccess());
ASSERT(system_resource_limit->SetLimitValue(LimitableResource::Events, 900).IsSuccess());
ASSERT(system_resource_limit->SetLimitValue(LimitableResource::TransferMemory, 200)
.IsSuccess());
ASSERT(system_resource_limit->SetLimitValue(LimitableResource::Sessions, 1133).IsSuccess());
system_resource_limit->Reserve(LimitableResource::PhysicalMemory, kernel_size);
// Derived from recent software updates. The kernel reserves 27MB
constexpr u64 kernel_size{0x1b00000};
if (!system_resource_limit->Reserve(LimitableResource::PhysicalMemory, kernel_size)) {
UNREACHABLE();
}
// Reserve secure applet memory, introduced in firmware 5.0.0
constexpr u64 secure_applet_memory_size{0x400000};
constexpr u64 secure_applet_memory_size{Common::Size_4_MB};
ASSERT(system_resource_limit->Reserve(LimitableResource::PhysicalMemory,
secure_applet_memory_size));
// This memory seems to be reserved on hardware, but is not reserved/used by yuzu.
// Likely Horizon OS reserved memory
// TODO(ameerj): Derive the memory rather than hardcode it.
constexpr u64 unknown_reserved_memory{0x2f896000};
ASSERT(system_resource_limit->Reserve(LimitableResource::PhysicalMemory,
unknown_reserved_memory));
}
void InitializePreemption(KernelCore& kernel) {
@@ -531,11 +541,7 @@ struct KernelCore::Impl {
linear_region_start);
}
void InitializeMemoryLayout() {
// Derive the initial memory layout from the emulated board
KMemoryLayout memory_layout;
DeriveInitialMemoryLayout(memory_layout);
void InitializeMemoryLayout(const KMemoryLayout& memory_layout) {
const auto system_pool = memory_layout.GetKernelSystemPoolRegionPhysicalExtents();
const auto applet_pool = memory_layout.GetKernelAppletPoolRegionPhysicalExtents();
const auto application_pool = memory_layout.GetKernelApplicationPoolRegionPhysicalExtents();
@@ -578,11 +584,14 @@ struct KernelCore::Impl {
system.Kernel(), system.DeviceMemory(), nullptr, {time_phys_addr, time_size / PageSize},
KMemoryPermission::None, KMemoryPermission::Read, time_phys_addr, time_size,
"Time:SharedMemory");
}
void InitializeSlabHeaps() {
// Allocate slab heaps
user_slab_heap_pages = std::make_unique<KSlabHeap<Page>>();
constexpr u64 user_slab_heap_size{0x1ef000};
// TODO(ameerj): This should be derived, not hardcoded within the kernel
constexpr u64 user_slab_heap_size{0x3de000};
// Reserve slab heaps
ASSERT(
system_resource_limit->Reserve(LimitableResource::PhysicalMemory, user_slab_heap_size));

24
src/core/hle/kernel/process.cpp
View File

@@ -120,9 +120,7 @@ std::shared_ptr<Process> Process::Create(Core::System& system, std::string name,
std::shared_ptr<Process> process = std::make_shared<Process>(system);
process->name = std::move(name);
// TODO: This is inaccurate
// The process should hold a reference to the kernel-wide resource limit.
process->resource_limit = std::make_shared<KResourceLimit>(kernel, system);
process->resource_limit = kernel.GetSystemResourceLimit();
process->status = ProcessStatus::Created;
process->program_id = 0;
process->process_id = type == ProcessType::KernelInternal ? kernel.CreateNewKernelProcessID()
@@ -160,17 +158,13 @@ void Process::DecrementThreadCount() {
}
u64 Process::GetTotalPhysicalMemoryAvailable() const {
// TODO: This is expected to always return the application memory pool size after accurately
// reserving kernel resources. The current workaround uses a process-local resource limit of
// application memory pool size, which is inaccurate.
const u64 capacity{resource_limit->GetFreeValue(LimitableResource::PhysicalMemory) +
page_table->GetTotalHeapSize() + GetSystemResourceSize() + image_size +
main_thread_stack_size};
ASSERT(capacity == kernel.MemoryManager().GetSize(KMemoryManager::Pool::Application));
if (capacity < memory_usage_capacity) {
return capacity;
}
return memory_usage_capacity;
}
@@ -272,10 +266,6 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
system_resource_size = metadata.GetSystemResourceSize();
image_size = code_size;
// Set initial resource limits
resource_limit->SetLimitValue(
LimitableResource::PhysicalMemory,
kernel.MemoryManager().GetSize(KMemoryManager::Pool::Application));
KScopedResourceReservation memory_reservation(resource_limit, LimitableResource::PhysicalMemory,
code_size + system_resource_size);
if (!memory_reservation.Succeeded()) {
@@ -324,16 +314,6 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
UNREACHABLE();
}
// Set initial resource limits
resource_limit->SetLimitValue(
LimitableResource::PhysicalMemory,
kernel.MemoryManager().GetSize(KMemoryManager::Pool::Application));
resource_limit->SetLimitValue(LimitableResource::Threads, 608);
resource_limit->SetLimitValue(LimitableResource::Events, 700);
resource_limit->SetLimitValue(LimitableResource::TransferMemory, 128);
resource_limit->SetLimitValue(LimitableResource::Sessions, 894);
// Create TLS region
tls_region_address = CreateTLSRegion();
memory_reservation.Commit();