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Merge pull request #9855 from liamwhite/kern-16-support

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kernel: support for 16.0.0
This commit is contained in:
bunnei 2023-03-03 14:42:00 -08:00 committed by GitHub
commit 1f98634371
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GPG key ID: 4AEE18F83AFDEB23
13 changed files with 513 additions and 291 deletions
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21
src/core/hle/kernel/board/nintendo/nx/k_system_control.cpp
View file

@ -14,9 +14,12 @@ namespace Kernel::Board::Nintendo::Nx {
namespace impl {
constexpr const std::size_t RequiredNonSecureSystemMemorySizeVi = 0x2238 * 4 * 1024;
constexpr const std::size_t RequiredNonSecureSystemMemorySizeNvservices = 0x710 * 4 * 1024;
constexpr const std::size_t RequiredNonSecureSystemMemorySizeMisc = 0x80 * 4 * 1024;
using namespace Common::Literals;
constexpr const std::size_t RequiredNonSecureSystemMemorySizeVi = 0x2280 * 4_KiB;
constexpr const std::size_t RequiredNonSecureSystemMemorySizeViFatal = 0x200 * 4_KiB;
constexpr const std::size_t RequiredNonSecureSystemMemorySizeNvservices = 0x704 * 4_KiB;
constexpr const std::size_t RequiredNonSecureSystemMemorySizeMisc = 0x80 * 4_KiB;
} // namespace impl
@ -24,6 +27,9 @@ constexpr const std::size_t RequiredNonSecureSystemMemorySize =
impl::RequiredNonSecureSystemMemorySizeVi + impl::RequiredNonSecureSystemMemorySizeNvservices +
impl::RequiredNonSecureSystemMemorySizeMisc;
constexpr const std::size_t RequiredNonSecureSystemMemorySizeWithFatal =
RequiredNonSecureSystemMemorySize + impl::RequiredNonSecureSystemMemorySizeViFatal;
namespace {
using namespace Common::Literals;
@ -120,10 +126,13 @@ size_t KSystemControl::Init::GetAppletPoolSize() {
size_t KSystemControl::Init::GetMinimumNonSecureSystemPoolSize() {
// Verify that our minimum is at least as large as Nintendo's.
constexpr size_t MinimumSize = RequiredNonSecureSystemMemorySize;
static_assert(MinimumSize >= 0x29C8000);
constexpr size_t MinimumSizeWithFatal = RequiredNonSecureSystemMemorySizeWithFatal;
static_assert(MinimumSizeWithFatal >= 0x2C04000);
return MinimumSize;
constexpr size_t MinimumSizeWithoutFatal = RequiredNonSecureSystemMemorySize;
static_assert(MinimumSizeWithoutFatal >= 0x2A00000);
return MinimumSizeWithFatal;
}
namespace {

8
src/core/hle/kernel/init/init_slab_setup.cpp
View file

@ -33,6 +33,9 @@
namespace Kernel::Init {
// For macro convenience.
using KThreadLockInfo = KThread::LockWithPriorityInheritanceInfo;
#define SLAB_COUNT(CLASS) kernel.SlabResourceCounts().num_##CLASS
#define FOREACH_SLAB_TYPE(HANDLER, ...) \
@ -54,7 +57,8 @@ namespace Kernel::Init {
HANDLER(KResourceLimit, (SLAB_COUNT(KResourceLimit)), ##__VA_ARGS__) \
HANDLER(KEventInfo, (SLAB_COUNT(KThread) + SLAB_COUNT(KDebug)), ##__VA_ARGS__) \
HANDLER(KDebug, (SLAB_COUNT(KDebug)), ##__VA_ARGS__) \
HANDLER(KSecureSystemResource, (SLAB_COUNT(KProcess)), ##__VA_ARGS__)
HANDLER(KSecureSystemResource, (SLAB_COUNT(KProcess)), ##__VA_ARGS__) \
HANDLER(KThreadLockInfo, (SLAB_COUNT(KThread)), ##__VA_ARGS__)
namespace {
@ -131,7 +135,7 @@ VAddr InitializeSlabHeap(Core::System& system, KMemoryLayout& memory_layout, VAd
}
size_t CalculateSlabHeapGapSize() {
constexpr size_t KernelSlabHeapGapSize = 2_MiB - 320_KiB;
constexpr size_t KernelSlabHeapGapSize = 2_MiB - 356_KiB;
static_assert(KernelSlabHeapGapSize <= KernelSlabHeapGapsSizeMax);
return KernelSlabHeapGapSize;
}

8
src/core/hle/kernel/k_address_arbiter.cpp
View file

@ -29,7 +29,9 @@ bool DecrementIfLessThan(Core::System& system, s32* out, VAddr address, s32 valu
auto& monitor = system.Monitor();
const auto current_core = system.Kernel().CurrentPhysicalCoreIndex();
// TODO(bunnei): We should disable interrupts here via KScopedInterruptDisable.
// NOTE: If scheduler lock is not held here, interrupt disable is required.
// KScopedInterruptDisable di;
// TODO(bunnei): We should call CanAccessAtomic(..) here.
// Load the value from the address.
@ -59,7 +61,9 @@ bool UpdateIfEqual(Core::System& system, s32* out, VAddr address, s32 value, s32
auto& monitor = system.Monitor();
const auto current_core = system.Kernel().CurrentPhysicalCoreIndex();
// TODO(bunnei): We should disable interrupts here via KScopedInterruptDisable.
// NOTE: If scheduler lock is not held here, interrupt disable is required.
// KScopedInterruptDisable di;
// TODO(bunnei): We should call CanAccessAtomic(..) here.
// Load the value from the address.

79
src/core/hle/kernel/k_address_space_info.cpp
View file

@ -23,86 +23,33 @@ constexpr std::array<KAddressSpaceInfo, 13> AddressSpaceInfos{{
{ .bit_width = 32, .address = Size_Invalid, .size = 1_GiB , .type = KAddressSpaceInfo::Type::Heap, },
{ .bit_width = 36, .address = 128_MiB , .size = 2_GiB - 128_MiB, .type = KAddressSpaceInfo::Type::MapSmall, },
{ .bit_width = 36, .address = 2_GiB , .size = 64_GiB - 2_GiB , .type = KAddressSpaceInfo::Type::MapLarge, },
{ .bit_width = 36, .address = Size_Invalid, .size = 6_GiB , .type = KAddressSpaceInfo::Type::Heap, },
{ .bit_width = 36, .address = Size_Invalid, .size = 8_GiB , .type = KAddressSpaceInfo::Type::Heap, },
{ .bit_width = 36, .address = Size_Invalid, .size = 6_GiB , .type = KAddressSpaceInfo::Type::Alias, },
{ .bit_width = 39, .address = 128_MiB , .size = 512_GiB - 128_MiB, .type = KAddressSpaceInfo::Type::Map39Bit, },
{ .bit_width = 39, .address = Size_Invalid, .size = 64_GiB , .type = KAddressSpaceInfo::Type::MapSmall },
{ .bit_width = 39, .address = Size_Invalid, .size = 6_GiB , .type = KAddressSpaceInfo::Type::Heap, },
{ .bit_width = 39, .address = Size_Invalid, .size = 8_GiB , .type = KAddressSpaceInfo::Type::Heap, },
{ .bit_width = 39, .address = Size_Invalid, .size = 64_GiB , .type = KAddressSpaceInfo::Type::Alias, },
{ .bit_width = 39, .address = Size_Invalid, .size = 2_GiB , .type = KAddressSpaceInfo::Type::Stack, },
}};
// clang-format on
constexpr bool IsAllowedIndexForAddress(std::size_t index) {
return index < AddressSpaceInfos.size() && AddressSpaceInfos[index].address != Size_Invalid;
}
using IndexArray =
std::array<std::size_t, static_cast<std::size_t>(KAddressSpaceInfo::Type::Count)>;
constexpr IndexArray AddressSpaceIndices32Bit{
0, 1, 0, 2, 0, 3,
};
constexpr IndexArray AddressSpaceIndices36Bit{
4, 5, 4, 6, 4, 7,
};
constexpr IndexArray AddressSpaceIndices39Bit{
9, 8, 8, 10, 12, 11,
};
constexpr bool IsAllowed32BitType(KAddressSpaceInfo::Type type) {
return type < KAddressSpaceInfo::Type::Count && type != KAddressSpaceInfo::Type::Map39Bit &&
type != KAddressSpaceInfo::Type::Stack;
}
constexpr bool IsAllowed36BitType(KAddressSpaceInfo::Type type) {
return type < KAddressSpaceInfo::Type::Count && type != KAddressSpaceInfo::Type::Map39Bit &&
type != KAddressSpaceInfo::Type::Stack;
}
constexpr bool IsAllowed39BitType(KAddressSpaceInfo::Type type) {
return type < KAddressSpaceInfo::Type::Count && type != KAddressSpaceInfo::Type::MapLarge;
const KAddressSpaceInfo& GetAddressSpaceInfo(size_t width, KAddressSpaceInfo::Type type) {
for (auto& info : AddressSpaceInfos) {
if (info.bit_width == width && info.type == type) {
return info;
}
}
UNREACHABLE_MSG("Could not find AddressSpaceInfo");
}
} // namespace
u64 KAddressSpaceInfo::GetAddressSpaceStart(std::size_t width, Type type) {
const std::size_t index{static_cast<std::size_t>(type)};
switch (width) {
case 32:
ASSERT(IsAllowed32BitType(type));
ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices32Bit[index]));
return AddressSpaceInfos[AddressSpaceIndices32Bit[index]].address;
case 36:
ASSERT(IsAllowed36BitType(type));
ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices36Bit[index]));
return AddressSpaceInfos[AddressSpaceIndices36Bit[index]].address;
case 39:
ASSERT(IsAllowed39BitType(type));
ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices39Bit[index]));
return AddressSpaceInfos[AddressSpaceIndices39Bit[index]].address;
}
ASSERT(false);
return 0;
uintptr_t KAddressSpaceInfo::GetAddressSpaceStart(size_t width, KAddressSpaceInfo::Type type) {
return GetAddressSpaceInfo(width, type).address;
}
std::size_t KAddressSpaceInfo::GetAddressSpaceSize(std::size_t width, Type type) {
const std::size_t index{static_cast<std::size_t>(type)};
switch (width) {
case 32:
ASSERT(IsAllowed32BitType(type));
return AddressSpaceInfos[AddressSpaceIndices32Bit[index]].size;
case 36:
ASSERT(IsAllowed36BitType(type));
return AddressSpaceInfos[AddressSpaceIndices36Bit[index]].size;
case 39:
ASSERT(IsAllowed39BitType(type));
return AddressSpaceInfos[AddressSpaceIndices39Bit[index]].size;
}
ASSERT(false);
return 0;
size_t KAddressSpaceInfo::GetAddressSpaceSize(size_t width, KAddressSpaceInfo::Type type) {
return GetAddressSpaceInfo(width, type).size;
}
} // namespace Kernel

58
src/core/hle/kernel/k_condition_variable.cpp
View file

@ -111,36 +111,36 @@ Result KConditionVariable::SignalToAddress(VAddr addr) {
KScopedSchedulerLock sl(kernel);
// Remove waiter thread.
s32 num_waiters{};
KThread* next_owner_thread =
owner_thread->RemoveWaiterByKey(std::addressof(num_waiters), addr);
bool has_waiters{};
KThread* const next_owner_thread =
owner_thread->RemoveUserWaiterByKey(std::addressof(has_waiters), addr);
// Determine the next tag.
u32 next_value{};
if (next_owner_thread != nullptr) {
next_value = next_owner_thread->GetAddressKeyValue();
if (num_waiters > 1) {
if (has_waiters) {
next_value |= Svc::HandleWaitMask;
}
// Write the value to userspace.
Result result{ResultSuccess};
if (WriteToUser(system, addr, std::addressof(next_value))) [[likely]] {
result = ResultSuccess;
} else {
result = ResultInvalidCurrentMemory;
}
// Signal the next owner thread.
next_owner_thread->EndWait(result);
return result;
} else {
// Just write the value to userspace.
R_UNLESS(WriteToUser(system, addr, std::addressof(next_value)),
ResultInvalidCurrentMemory);
return ResultSuccess;
}
// Synchronize memory before proceeding.
std::atomic_thread_fence(std::memory_order_seq_cst);
// Write the value to userspace.
Result result{ResultSuccess};
if (WriteToUser(system, addr, std::addressof(next_value))) [[likely]] {
result = ResultSuccess;
} else {
result = ResultInvalidCurrentMemory;
}
// If necessary, signal the next owner thread.
if (next_owner_thread != nullptr) {
next_owner_thread->EndWait(result);
}
R_RETURN(result);
}
}
@ -198,7 +198,9 @@ void KConditionVariable::SignalImpl(KThread* thread) {
u32 prev_tag{};
bool can_access{};
{
// TODO(bunnei): We should disable interrupts here via KScopedInterruptDisable.
// NOTE: If scheduler lock is not held here, interrupt disable is required.
// KScopedInterruptDisable di;
// TODO(bunnei): We should call CanAccessAtomic(..) here.
can_access = true;
if (can_access) [[likely]] {
@ -245,9 +247,11 @@ void KConditionVariable::Signal(u64 cv_key, s32 count) {
(it->GetConditionVariableKey() == cv_key)) {
KThread* target_thread = std::addressof(*it);
this->SignalImpl(target_thread);
it = thread_tree.erase(it);
target_thread->ClearConditionVariable();
this->SignalImpl(target_thread);
++num_waiters;
}
@ -277,16 +281,16 @@ Result KConditionVariable::Wait(VAddr addr, u64 key, u32 value, s64 timeout) {
// Update the value and process for the next owner.
{
// Remove waiter thread.
s32 num_waiters{};
bool has_waiters{};
KThread* next_owner_thread =
cur_thread->RemoveWaiterByKey(std::addressof(num_waiters), addr);
cur_thread->RemoveUserWaiterByKey(std::addressof(has_waiters), addr);
// Update for the next owner thread.
u32 next_value{};
if (next_owner_thread != nullptr) {
// Get the next tag value.
next_value = next_owner_thread->GetAddressKeyValue();
if (num_waiters > 1) {
if (has_waiters) {
next_value |= Svc::HandleWaitMask;
}

8
src/core/hle/kernel/k_light_lock.cpp
View file

@ -90,15 +90,15 @@ void KLightLock::UnlockSlowPath(uintptr_t _cur_thread) {
KScopedSchedulerLock sl(kernel);
// Get the next owner.
s32 num_waiters;
KThread* next_owner = owner_thread->RemoveWaiterByKey(
std::addressof(num_waiters), reinterpret_cast<uintptr_t>(std::addressof(tag)));
bool has_waiters;
KThread* next_owner = owner_thread->RemoveKernelWaiterByKey(
std::addressof(has_waiters), reinterpret_cast<uintptr_t>(std::addressof(tag)));
// Pass the lock to the next owner.
uintptr_t next_tag = 0;
if (next_owner != nullptr) {
next_tag =
reinterpret_cast<uintptr_t>(next_owner) | static_cast<uintptr_t>(num_waiters > 1);
reinterpret_cast<uintptr_t>(next_owner) | static_cast<uintptr_t>(has_waiters);
next_owner->EndWait(ResultSuccess);

6
src/core/hle/kernel/k_process.cpp
View file

@ -156,9 +156,9 @@ bool KProcess::ReleaseUserException(KThread* thread) {
exception_thread = nullptr;
// Remove waiter thread.
s32 num_waiters{};
if (KThread* next = thread->RemoveWaiterByKey(
std::addressof(num_waiters),
bool has_waiters{};
if (KThread* next = thread->RemoveKernelWaiterByKey(
std::addressof(has_waiters),
reinterpret_cast<uintptr_t>(std::addressof(exception_thread)));
next != nullptr) {
next->EndWait(ResultSuccess);

11
src/core/hle/kernel/k_scheduler_lock.h
View file

@ -31,22 +31,23 @@ public:
}
if (IsLockedByCurrentThread()) {
// If we already own the lock, we can just increment the count.
// If we already own the lock, the lock count should be > 0.
// For debug, ensure this is true.
ASSERT(lock_count > 0);
lock_count++;
} else {
// Otherwise, we want to disable scheduling and acquire the spinlock.
SchedulerType::DisableScheduling(kernel);
spin_lock.Lock();
// For debug, ensure that our state is valid.
ASSERT(lock_count == 0);
ASSERT(owner_thread == nullptr);
// Increment count, take ownership.
lock_count = 1;
// Take ownership of the lock.
owner_thread = GetCurrentThreadPointer(kernel);
}
// Increment the lock count.
lock_count++;
}
void Unlock() {

269
src/core/hle/kernel/k_thread.cpp
View file

@ -191,7 +191,7 @@ Result KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_stack
light_ipc_data = nullptr;
// We're not waiting for a lock, and we haven't disabled migration.
lock_owner = nullptr;
waiting_lock_info = nullptr;
num_core_migration_disables = 0;
// We have no waiters, but we do have an entrypoint.
@ -341,25 +341,39 @@ void KThread::Finalize() {
// Release any waiters.
{
ASSERT(lock_owner == nullptr);
ASSERT(waiting_lock_info == nullptr);
KScopedSchedulerLock sl{kernel};
auto it = waiter_list.begin();
while (it != waiter_list.end()) {
// Get the thread.
KThread* const waiter = std::addressof(*it);
// Check that we have no kernel waiters.
ASSERT(num_kernel_waiters == 0);
// The thread shouldn't be a kernel waiter.
ASSERT(!waiter->GetAddressKeyIsKernel());
auto it = held_lock_info_list.begin();
while (it != held_lock_info_list.end()) {
// Get the lock info.
auto* const lock_info = std::addressof(*it);
// Clear the lock owner.
waiter->SetLockOwner(nullptr);
// The lock shouldn't have a kernel waiter.
ASSERT(!lock_info->GetIsKernelAddressKey());
// Erase the waiter from our list.
it = waiter_list.erase(it);
// Remove all waiters.
while (lock_info->GetWaiterCount() != 0) {
// Get the front waiter.
KThread* const waiter = lock_info->GetHighestPriorityWaiter();
// Cancel the thread's wait.
waiter->CancelWait(ResultInvalidState, true);
// Remove it from the lock.
if (lock_info->RemoveWaiter(waiter)) {
ASSERT(lock_info->GetWaiterCount() == 0);
}
// Cancel the thread's wait.
waiter->CancelWait(ResultInvalidState, true);
}
// Remove the held lock from our list.
it = held_lock_info_list.erase(it);
// Free the lock info.
LockWithPriorityInheritanceInfo::Free(kernel, lock_info);
}
}
@ -708,6 +722,24 @@ void KThread::SetBasePriority(s32 value) {
RestorePriority(kernel, this);
}
KThread* KThread::GetLockOwner() const {
return waiting_lock_info != nullptr ? waiting_lock_info->GetOwner() : nullptr;
}
void KThread::IncreaseBasePriority(s32 priority_) {
ASSERT(Svc::HighestThreadPriority <= priority_ && priority_ <= Svc::LowestThreadPriority);
ASSERT(KScheduler::IsSchedulerLockedByCurrentThread(kernel));
ASSERT(!this->GetStackParameters().is_pinned);
// Set our base priority.
if (base_priority > priority_) {
base_priority = priority_;
// Perform a priority restoration.
RestorePriority(kernel, this);
}
}
void KThread::RequestSuspend(SuspendType type) {
KScopedSchedulerLock sl{kernel};
@ -891,51 +923,89 @@ Result KThread::GetThreadContext3(std::vector<u8>& out) {
R_SUCCEED();
}
void KThread::AddWaiterImpl(KThread* thread) {
ASSERT(kernel.GlobalSchedulerContext().IsLocked());
void KThread::AddHeldLock(LockWithPriorityInheritanceInfo* lock_info) {
ASSERT(KScheduler::IsSchedulerLockedByCurrentThread(kernel));
// Find the right spot to insert the waiter.
auto it = waiter_list.begin();
while (it != waiter_list.end()) {
if (it->GetPriority() > thread->GetPriority()) {
break;
// Set ourselves as the lock's owner.
lock_info->SetOwner(this);
// Add the lock to our held list.
held_lock_info_list.push_front(*lock_info);
}
KThread::LockWithPriorityInheritanceInfo* KThread::FindHeldLock(VAddr address_key_,
bool is_kernel_address_key_) {
ASSERT(KScheduler::IsSchedulerLockedByCurrentThread(kernel));
// Try to find an existing held lock.
for (auto& held_lock : held_lock_info_list) {
if (held_lock.GetAddressKey() == address_key_ &&
held_lock.GetIsKernelAddressKey() == is_kernel_address_key_) {
return std::addressof(held_lock);
}
it++;
}
return nullptr;
}
void KThread::AddWaiterImpl(KThread* thread) {
ASSERT(KScheduler::IsSchedulerLockedByCurrentThread(kernel));
ASSERT(thread->GetConditionVariableTree() == nullptr);
// Get the thread's address key.
const auto address_key_ = thread->GetAddressKey();
const auto is_kernel_address_key_ = thread->GetIsKernelAddressKey();
// Keep track of how many kernel waiters we have.
if (thread->GetAddressKeyIsKernel()) {
if (is_kernel_address_key_) {
ASSERT((num_kernel_waiters++) >= 0);
KScheduler::SetSchedulerUpdateNeeded(kernel);
}
// Insert the waiter.
waiter_list.insert(it, *thread);
thread->SetLockOwner(this);
// Get the relevant lock info.
auto* lock_info = this->FindHeldLock(address_key_, is_kernel_address_key_);
if (lock_info == nullptr) {
// Create a new lock for the address key.
lock_info =
LockWithPriorityInheritanceInfo::Create(kernel, address_key_, is_kernel_address_key_);
// Add the new lock to our list.
this->AddHeldLock(lock_info);
}
// Add the thread as waiter to the lock info.
lock_info->AddWaiter(thread);
}
void KThread::RemoveWaiterImpl(KThread* thread) {
ASSERT(kernel.GlobalSchedulerContext().IsLocked());
ASSERT(KScheduler::IsSchedulerLockedByCurrentThread(kernel));
// Keep track of how many kernel waiters we have.
if (thread->GetAddressKeyIsKernel()) {
if (thread->GetIsKernelAddressKey()) {
ASSERT((num_kernel_waiters--) > 0);
KScheduler::SetSchedulerUpdateNeeded(kernel);
}
// Get the info for the lock the thread is waiting on.
auto* lock_info = thread->GetWaitingLockInfo();
ASSERT(lock_info->GetOwner() == this);
// Remove the waiter.
waiter_list.erase(waiter_list.iterator_to(*thread));
thread->SetLockOwner(nullptr);
if (lock_info->RemoveWaiter(thread)) {
held_lock_info_list.erase(held_lock_info_list.iterator_to(*lock_info));
LockWithPriorityInheritanceInfo::Free(kernel, lock_info);
}
}
void KThread::RestorePriority(KernelCore& kernel_ctx, KThread* thread) {
ASSERT(kernel_ctx.GlobalSchedulerContext().IsLocked());
void KThread::RestorePriority(KernelCore& kernel, KThread* thread) {
ASSERT(KScheduler::IsSchedulerLockedByCurrentThread(kernel));
while (true) {
while (thread != nullptr) {
// We want to inherit priority where possible.
s32 new_priority = thread->GetBasePriority();
if (thread->HasWaiters()) {
new_priority = std::min(new_priority, thread->waiter_list.front().GetPriority());
for (const auto& held_lock : thread->held_lock_info_list) {
new_priority =
std::min(new_priority, held_lock.GetHighestPriorityWaiter()->GetPriority());
}
// If the priority we would inherit is not different from ours, don't do anything.
@ -943,9 +1013,18 @@ void KThread::RestorePriority(KernelCore& kernel_ctx, KThread* thread) {
return;
}
// Get the owner of whatever lock this thread is waiting on.
KThread* const lock_owner = thread->GetLockOwner();
// If the thread is waiting on some lock, remove it as a waiter to prevent violating red
// black tree invariants.
if (lock_owner != nullptr) {
lock_owner->RemoveWaiterImpl(thread);
}
// Ensure we don't violate condition variable red black tree invariants.
if (auto* cv_tree = thread->GetConditionVariableTree(); cv_tree != nullptr) {
BeforeUpdatePriority(kernel_ctx, cv_tree, thread);
BeforeUpdatePriority(kernel, cv_tree, thread);
}
// Change the priority.
@ -954,73 +1033,99 @@ void KThread::RestorePriority(KernelCore& kernel_ctx, KThread* thread) {
// Restore the condition variable, if relevant.
if (auto* cv_tree = thread->GetConditionVariableTree(); cv_tree != nullptr) {
AfterUpdatePriority(kernel_ctx, cv_tree, thread);
AfterUpdatePriority(kernel, cv_tree, thread);
}
// If we removed the thread from some lock's waiting list, add it back.
if (lock_owner != nullptr) {
lock_owner->AddWaiterImpl(thread);
}
// Update the scheduler.
KScheduler::OnThreadPriorityChanged(kernel_ctx, thread, old_priority);
KScheduler::OnThreadPriorityChanged(kernel, thread, old_priority);
// Keep the lock owner up to date.
KThread* lock_owner = thread->GetLockOwner();
if (lock_owner == nullptr) {
return;
}
// Update the thread in the lock owner's sorted list, and continue inheriting.
lock_owner->RemoveWaiterImpl(thread);
lock_owner->AddWaiterImpl(thread);
// Continue inheriting priority.
thread = lock_owner;
}
}
void KThread::AddWaiter(KThread* thread) {
AddWaiterImpl(thread);
RestorePriority(kernel, this);
this->AddWaiterImpl(thread);
// If the thread has a higher priority than us, we should inherit.
if (thread->GetPriority() < this->GetPriority()) {
RestorePriority(kernel, this);
}
}
void KThread::RemoveWaiter(KThread* thread) {
RemoveWaiterImpl(thread);
RestorePriority(kernel, this);
this->RemoveWaiterImpl(thread);
// If our priority is the same as the thread's (and we've inherited), we may need to restore to
// lower priority.
if (this->GetPriority() == thread->GetPriority() &&
this->GetPriority() < this->GetBasePriority()) {
RestorePriority(kernel, this);
}
}
KThread* KThread::RemoveWaiterByKey(s32* out_num_waiters, VAddr key) {
ASSERT(kernel.GlobalSchedulerContext().IsLocked());
KThread* KThread::RemoveWaiterByKey(bool* out_has_waiters, VAddr key, bool is_kernel_address_key_) {
ASSERT(KScheduler::IsSchedulerLockedByCurrentThread(kernel));
s32 num_waiters{};
KThread* next_lock_owner{};
auto it = waiter_list.begin();
while (it != waiter_list.end()) {
if (it->GetAddressKey() == key) {
KThread* thread = std::addressof(*it);
// Get the relevant lock info.
auto* lock_info = this->FindHeldLock(key, is_kernel_address_key_);
if (lock_info == nullptr) {
*out_has_waiters = false;
return nullptr;
}
// Keep track of how many kernel waiters we have.
if (thread->GetAddressKeyIsKernel()) {
ASSERT((num_kernel_waiters--) > 0);
KScheduler::SetSchedulerUpdateNeeded(kernel);
}
it = waiter_list.erase(it);
// Remove the lock info from our held list.
held_lock_info_list.erase(held_lock_info_list.iterator_to(*lock_info));
// Update the next lock owner.
if (next_lock_owner == nullptr) {
next_lock_owner = thread;
next_lock_owner->SetLockOwner(nullptr);
} else {
next_lock_owner->AddWaiterImpl(thread);
}
num_waiters++;
} else {
it++;
// Keep track of how many kernel waiters we have.
if (lock_info->GetIsKernelAddressKey()) {
num_kernel_waiters -= lock_info->GetWaiterCount();
ASSERT(num_kernel_waiters >= 0);
KScheduler::SetSchedulerUpdateNeeded(kernel);
}
ASSERT(lock_info->GetWaiterCount() > 0);
// Remove the highest priority waiter from the lock to be the next owner.
KThread* next_lock_owner = lock_info->GetHighestPriorityWaiter();
if (lock_info->RemoveWaiter(next_lock_owner)) {
// The new owner was the only waiter.
*out_has_waiters = false;
// Free the lock info, since it has no waiters.
LockWithPriorityInheritanceInfo::Free(kernel, lock_info);
} else {
// There are additional waiters on the lock.
*out_has_waiters = true;
// Add the lock to the new owner's held list.
next_lock_owner->AddHeldLock(lock_info);
// Keep track of any kernel waiters for the new owner.
if (lock_info->GetIsKernelAddressKey()) {
next_lock_owner->num_kernel_waiters += lock_info->GetWaiterCount();
ASSERT(next_lock_owner->num_kernel_waiters > 0);
// NOTE: No need to set scheduler update needed, because we will have already done so
// when removing earlier.
}
}
// Do priority updates, if we have a next owner.
if (next_lock_owner) {
// If our priority is the same as the next owner's (and we've inherited), we may need to restore
// to lower priority.
if (this->GetPriority() == next_lock_owner->GetPriority() &&
this->GetPriority() < this->GetBasePriority()) {
RestorePriority(kernel, this);
RestorePriority(kernel, next_lock_owner);
// NOTE: No need to restore priority on the next lock owner, because it was already the
// highest priority waiter on the lock.
}
// Return output.
*out_num_waiters = num_waiters;
// Return the next lock owner.
return next_lock_owner;
}
@ -1137,9 +1242,7 @@ ThreadState KThread::RequestTerminate() {
}
// Change the thread's priority to be higher than any system thread's.
if (this->GetBasePriority() >= Svc::SystemThreadPriorityHighest) {
this->SetBasePriority(TerminatingThreadPriority);
}
this->IncreaseBasePriority(TerminatingThreadPriority);
// If the thread is runnable, send a termination interrupt to other cores.
if (this->GetState() == ThreadState::Runnable) {

175
src/core/hle/kernel/k_thread.h
View file

@ -339,13 +339,7 @@ public:
void SetInterruptFlag();
void ClearInterruptFlag();
[[nodiscard]] KThread* GetLockOwner() const {
return lock_owner;
}
void SetLockOwner(KThread* owner) {
lock_owner = owner;
}
KThread* GetLockOwner() const;
[[nodiscard]] const KAffinityMask& GetAffinityMask() const {
return physical_affinity_mask;
@ -601,7 +595,13 @@ public:
[[nodiscard]] Result GetThreadContext3(std::vector<u8>& out);
[[nodiscard]] KThread* RemoveWaiterByKey(s32* out_num_waiters, VAddr key);
[[nodiscard]] KThread* RemoveUserWaiterByKey(bool* out_has_waiters, VAddr key) {
return this->RemoveWaiterByKey(out_has_waiters, key, false);
}
[[nodiscard]] KThread* RemoveKernelWaiterByKey(bool* out_has_waiters, VAddr key) {
return this->RemoveWaiterByKey(out_has_waiters, key, true);
}
[[nodiscard]] VAddr GetAddressKey() const {
return address_key;
@ -611,8 +611,8 @@ public:
return address_key_value;
}
[[nodiscard]] bool GetAddressKeyIsKernel() const {
return address_key_is_kernel;
[[nodiscard]] bool GetIsKernelAddressKey() const {
return is_kernel_address_key;
}
//! NB: intentional deviation from official kernel.
@ -621,20 +621,17 @@ public:
// to cope with arbitrary host pointers making their way
// into things.
void SetUserAddressKey(VAddr key) {
address_key = key;
address_key_is_kernel = false;
}
void SetUserAddressKey(VAddr key, u32 val) {
ASSERT(waiting_lock_info == nullptr);
address_key = key;
address_key_value = val;
address_key_is_kernel = false;
is_kernel_address_key = false;
}
void SetKernelAddressKey(VAddr key) {
ASSERT(waiting_lock_info == nullptr);
address_key = key;
address_key_is_kernel = true;
is_kernel_address_key = true;
}
void ClearWaitQueue() {
@ -646,10 +643,6 @@ public:
void EndWait(Result wait_result_);
void CancelWait(Result wait_result_, bool cancel_timer_task);
[[nodiscard]] bool HasWaiters() const {
return !waiter_list.empty();
}
[[nodiscard]] s32 GetNumKernelWaiters() const {
return num_kernel_waiters;
}
@ -679,6 +672,9 @@ public:
}
private:
[[nodiscard]] KThread* RemoveWaiterByKey(bool* out_has_waiters, VAddr key,
bool is_kernel_address_key);
static constexpr size_t PriorityInheritanceCountMax = 10;
union SyncObjectBuffer {
std::array<KSynchronizationObject*, Svc::ArgumentHandleCountMax> sync_objects{};
@ -722,13 +718,14 @@ private:
};
void AddWaiterImpl(KThread* thread);
void RemoveWaiterImpl(KThread* thread);
static void RestorePriority(KernelCore& kernel, KThread* thread);
void StartTermination();
void FinishTermination();
void IncreaseBasePriority(s32 priority);
[[nodiscard]] Result Initialize(KThreadFunction func, uintptr_t arg, VAddr user_stack_top,
s32 prio, s32 virt_core, KProcess* owner, ThreadType type);
@ -737,8 +734,6 @@ private:
s32 core, KProcess* owner, ThreadType type,
std::function<void()>&& init_func);
static void RestorePriority(KernelCore& kernel_ctx, KThread* thread);
// For core KThread implementation
ThreadContext32 thread_context_32{};
ThreadContext64 thread_context_64{};
@ -749,6 +744,127 @@ private:
&KThread::condvar_arbiter_tree_node>;
using ConditionVariableThreadTree =
ConditionVariableThreadTreeTraits::TreeType<ConditionVariableComparator>;
private:
struct LockWithPriorityInheritanceComparator {
struct RedBlackKeyType {
s32 m_priority;
constexpr s32 GetPriority() const {
return m_priority;
}
};
template <typename T>
requires(std::same_as<T, KThread> || std::same_as<T, RedBlackKeyType>)
static constexpr int Compare(const T& lhs, const KThread& rhs) {
if (lhs.GetPriority() < rhs.GetPriority()) {
// Sort by priority.
return -1;
} else {
return 1;
}
}
};
static_assert(std::same_as<Common::RedBlackKeyType<LockWithPriorityInheritanceComparator, void>,
LockWithPriorityInheritanceComparator::RedBlackKeyType>);
using LockWithPriorityInheritanceThreadTreeTraits =
Common::IntrusiveRedBlackTreeMemberTraitsDeferredAssert<
&KThread::condvar_arbiter_tree_node>;
using LockWithPriorityInheritanceThreadTree =
ConditionVariableThreadTreeTraits::TreeType<LockWithPriorityInheritanceComparator>;
public:
class LockWithPriorityInheritanceInfo : public KSlabAllocated<LockWithPriorityInheritanceInfo>,
public boost::intrusive::list_base_hook<> {
public:
explicit LockWithPriorityInheritanceInfo(KernelCore&) {}
static LockWithPriorityInheritanceInfo* Create(KernelCore& kernel, VAddr address_key,
bool is_kernel_address_key) {
// Create a new lock info.
auto* new_lock = LockWithPriorityInheritanceInfo::Allocate(kernel);
ASSERT(new_lock != nullptr);
// Set the new lock's address key.
new_lock->m_address_key = address_key;
new_lock->m_is_kernel_address_key = is_kernel_address_key;
return new_lock;
}
void SetOwner(KThread* new_owner) {
// Set new owner.
m_owner = new_owner;
}
void AddWaiter(KThread* waiter) {
// Insert the waiter.
m_tree.insert(*waiter);
m_waiter_count++;
waiter->SetWaitingLockInfo(this);
}
[[nodiscard]] bool RemoveWaiter(KThread* waiter) {
m_tree.erase(m_tree.iterator_to(*waiter));
waiter->SetWaitingLockInfo(nullptr);
return (--m_waiter_count) == 0;
}
KThread* GetHighestPriorityWaiter() {
return std::addressof(m_tree.front());
}
const KThread* GetHighestPriorityWaiter() const {
return std::addressof(m_tree.front());
}
LockWithPriorityInheritanceThreadTree& GetThreadTree() {
return m_tree;
}
const LockWithPriorityInheritanceThreadTree& GetThreadTree() const {
return m_tree;
}
VAddr GetAddressKey() const {
return m_address_key;
}
bool GetIsKernelAddressKey() const {
return m_is_kernel_address_key;
}
KThread* GetOwner() const {
return m_owner;
}
u32 GetWaiterCount() const {
return m_waiter_count;
}
private:
LockWithPriorityInheritanceThreadTree m_tree{};
VAddr m_address_key{};
KThread* m_owner{};
u32 m_waiter_count{};
bool m_is_kernel_address_key{};
};
void SetWaitingLockInfo(LockWithPriorityInheritanceInfo* lock) {
waiting_lock_info = lock;
}
LockWithPriorityInheritanceInfo* GetWaitingLockInfo() {
return waiting_lock_info;
}
void AddHeldLock(LockWithPriorityInheritanceInfo* lock_info);
LockWithPriorityInheritanceInfo* FindHeldLock(VAddr address_key, bool is_kernel_address_key);
private:
using LockWithPriorityInheritanceInfoList =
boost::intrusive::list<LockWithPriorityInheritanceInfo>;
ConditionVariableThreadTree* condvar_tree{};
u64 condvar_key{};
u64 virtual_affinity_mask{};
@ -765,9 +881,9 @@ private:
s64 last_scheduled_tick{};
std::array<QueueEntry, Core::Hardware::NUM_CPU_CORES> per_core_priority_queue_entry{};
KThreadQueue* wait_queue{};
WaiterList waiter_list{};
LockWithPriorityInheritanceInfoList held_lock_info_list{};
LockWithPriorityInheritanceInfo* waiting_lock_info{};
WaiterList pinned_waiter_list{};
KThread* lock_owner{};
u32 address_key_value{};
u32 suspend_request_flags{};
u32 suspend_allowed_flags{};
@ -791,7 +907,7 @@ private:
bool debug_attached{};
s8 priority_inheritance_count{};
bool resource_limit_release_hint{};
bool address_key_is_kernel{};
bool is_kernel_address_key{};
StackParameters stack_parameters{};
Common::SpinLock context_guard{};
@ -814,10 +930,12 @@ public:
void SetConditionVariable(ConditionVariableThreadTree* tree, VAddr address, u64 cv_key,
u32 value) {
ASSERT(waiting_lock_info == nullptr);
condvar_tree = tree;
condvar_key = cv_key;
address_key = address;
address_key_value = value;
is_kernel_address_key = false;
}
void ClearConditionVariable() {
@ -829,6 +947,7 @@ public:
}
void SetAddressArbiter(ConditionVariableThreadTree* tree, u64 address) {
ASSERT(waiting_lock_info == nullptr);
condvar_tree = tree;
condvar_key = address;
}

93
src/core/hle/kernel/kernel.cpp
View file

@ -1318,4 +1318,97 @@ const Core::System& KernelCore::System() const {
return impl->system;
}
struct KernelCore::SlabHeapContainer {
KSlabHeap<KClientSession> client_session;
KSlabHeap<KEvent> event;
KSlabHeap<KLinkedListNode> linked_list_node;
KSlabHeap<KPort> port;
KSlabHeap<KProcess> process;
KSlabHeap<KResourceLimit> resource_limit;
KSlabHeap<KSession> session;
KSlabHeap<KSharedMemory> shared_memory;
KSlabHeap<KSharedMemoryInfo> shared_memory_info;
KSlabHeap<KThread> thread;
KSlabHeap<KTransferMemory> transfer_memory;
KSlabHeap<KCodeMemory> code_memory;
KSlabHeap<KDeviceAddressSpace> device_address_space;
KSlabHeap<KPageBuffer> page_buffer;
KSlabHeap<KThreadLocalPage> thread_local_page;
KSlabHeap<KObjectName> object_name;
KSlabHeap<KSessionRequest> session_request;
KSlabHeap<KSecureSystemResource> secure_system_resource;
KSlabHeap<KThread::LockWithPriorityInheritanceInfo> lock_info;
KSlabHeap<KEventInfo> event_info;
KSlabHeap<KDebug> debug;
};
template <typename T>
KSlabHeap<T>& KernelCore::SlabHeap() {
if constexpr (std::is_same_v<T, KClientSession>) {
return slab_heap_container->client_session;
} else if constexpr (std::is_same_v<T, KEvent>) {
return slab_heap_container->event;
} else if constexpr (std::is_same_v<T, KLinkedListNode>) {
return slab_heap_container->linked_list_node;
} else if constexpr (std::is_same_v<T, KPort>) {
return slab_heap_container->port;
} else if constexpr (std::is_same_v<T, KProcess>) {
return slab_heap_container->process;
} else if constexpr (std::is_same_v<T, KResourceLimit>) {
return slab_heap_container->resource_limit;
} else if constexpr (std::is_same_v<T, KSession>) {
return slab_heap_container->session;
} else if constexpr (std::is_same_v<T, KSharedMemory>) {
return slab_heap_container->shared_memory;
} else if constexpr (std::is_same_v<T, KSharedMemoryInfo>) {
return slab_heap_container->shared_memory_info;
} else if constexpr (std::is_same_v<T, KThread>) {
return slab_heap_container->thread;
} else if constexpr (std::is_same_v<T, KTransferMemory>) {
return slab_heap_container->transfer_memory;
} else if constexpr (std::is_same_v<T, KCodeMemory>) {
return slab_heap_container->code_memory;
} else if constexpr (std::is_same_v<T, KDeviceAddressSpace>) {
return slab_heap_container->device_address_space;
} else if constexpr (std::is_same_v<T, KPageBuffer>) {
return slab_heap_container->page_buffer;
} else if constexpr (std::is_same_v<T, KThreadLocalPage>) {
return slab_heap_container->thread_local_page;
} else if constexpr (std::is_same_v<T, KObjectName>) {
return slab_heap_container->object_name;
} else if constexpr (std::is_same_v<T, KSessionRequest>) {
return slab_heap_container->session_request;
} else if constexpr (std::is_same_v<T, KSecureSystemResource>) {
return slab_heap_container->secure_system_resource;
} else if constexpr (std::is_same_v<T, KThread::LockWithPriorityInheritanceInfo>) {
return slab_heap_container->lock_info;
} else if constexpr (std::is_same_v<T, KEventInfo>) {
return slab_heap_container->event_info;
} else if constexpr (std::is_same_v<T, KDebug>) {
return slab_heap_container->debug;
}
}
template KSlabHeap<KClientSession>& KernelCore::SlabHeap();
template KSlabHeap<KEvent>& KernelCore::SlabHeap();
template KSlabHeap<KLinkedListNode>& KernelCore::SlabHeap();
template KSlabHeap<KPort>& KernelCore::SlabHeap();
template KSlabHeap<KProcess>& KernelCore::SlabHeap();
template KSlabHeap<KResourceLimit>& KernelCore::SlabHeap();
template KSlabHeap<KSession>& KernelCore::SlabHeap();
template KSlabHeap<KSharedMemory>& KernelCore::SlabHeap();
template KSlabHeap<KSharedMemoryInfo>& KernelCore::SlabHeap();
template KSlabHeap<KThread>& KernelCore::SlabHeap();
template KSlabHeap<KTransferMemory>& KernelCore::SlabHeap();
template KSlabHeap<KCodeMemory>& KernelCore::SlabHeap();
template KSlabHeap<KDeviceAddressSpace>& KernelCore::SlabHeap();
template KSlabHeap<KPageBuffer>& KernelCore::SlabHeap();
template KSlabHeap<KThreadLocalPage>& KernelCore::SlabHeap();
template KSlabHeap<KObjectName>& KernelCore::SlabHeap();
template KSlabHeap<KSessionRequest>& KernelCore::SlabHeap();
template KSlabHeap<KSecureSystemResource>& KernelCore::SlabHeap();
template KSlabHeap<KThread::LockWithPriorityInheritanceInfo>& KernelCore::SlabHeap();
template KSlabHeap<KEventInfo>& KernelCore::SlabHeap();
template KSlabHeap<KDebug>& KernelCore::SlabHeap();
} // namespace Kernel

67
src/core/hle/kernel/kernel.h
View file

@ -305,49 +305,7 @@ public:
/// Gets the slab heap for the specified kernel object type.
template <typename T>
KSlabHeap<T>& SlabHeap() {
if constexpr (std::is_same_v<T, KClientSession>) {
return slab_heap_container->client_session;
} else if constexpr (std::is_same_v<T, KEvent>) {
return slab_heap_container->event;
} else if constexpr (std::is_same_v<T, KLinkedListNode>) {
return slab_heap_container->linked_list_node;
} else if constexpr (std::is_same_v<T, KPort>) {
return slab_heap_container->port;
} else if constexpr (std::is_same_v<T, KProcess>) {
return slab_heap_container->process;
} else if constexpr (std::is_same_v<T, KResourceLimit>) {
return slab_heap_container->resource_limit;
} else if constexpr (std::is_same_v<T, KSession>) {
return slab_heap_container->session;
} else if constexpr (std::is_same_v<T, KSharedMemory>) {
return slab_heap_container->shared_memory;
} else if constexpr (std::is_same_v<T, KSharedMemoryInfo>) {
return slab_heap_container->shared_memory_info;
} else if constexpr (std::is_same_v<T, KThread>) {
return slab_heap_container->thread;
} else if constexpr (std::is_same_v<T, KTransferMemory>) {
return slab_heap_container->transfer_memory;
} else if constexpr (std::is_same_v<T, KCodeMemory>) {
return slab_heap_container->code_memory;
} else if constexpr (std::is_same_v<T, KDeviceAddressSpace>) {
return slab_heap_container->device_address_space;
} else if constexpr (std::is_same_v<T, KPageBuffer>) {
return slab_heap_container->page_buffer;
} else if constexpr (std::is_same_v<T, KThreadLocalPage>) {
return slab_heap_container->thread_local_page;
} else if constexpr (std::is_same_v<T, KObjectName>) {
return slab_heap_container->object_name;
} else if constexpr (std::is_same_v<T, KSessionRequest>) {
return slab_heap_container->session_request;
} else if constexpr (std::is_same_v<T, KSecureSystemResource>) {
return slab_heap_container->secure_system_resource;
} else if constexpr (std::is_same_v<T, KEventInfo>) {
return slab_heap_container->event_info;
} else if constexpr (std::is_same_v<T, KDebug>) {
return slab_heap_container->debug;
}
}
KSlabHeap<T>& SlabHeap();
/// Gets the current slab resource counts.
Init::KSlabResourceCounts& SlabResourceCounts();
@ -393,28 +351,7 @@ private:
private:
/// Helper to encapsulate all slab heaps in a single heap allocated container
struct SlabHeapContainer {
KSlabHeap<KClientSession> client_session;
KSlabHeap<KEvent> event;
KSlabHeap<KLinkedListNode> linked_list_node;
KSlabHeap<KPort> port;
KSlabHeap<KProcess> process;
KSlabHeap<KResourceLimit> resource_limit;
KSlabHeap<KSession> session;
KSlabHeap<KSharedMemory> shared_memory;
KSlabHeap<KSharedMemoryInfo> shared_memory_info;
KSlabHeap<KThread> thread;
KSlabHeap<KTransferMemory> transfer_memory;
KSlabHeap<KCodeMemory> code_memory;
KSlabHeap<KDeviceAddressSpace> device_address_space;
KSlabHeap<KPageBuffer> page_buffer;
KSlabHeap<KThreadLocalPage> thread_local_page;
KSlabHeap<KObjectName> object_name;
KSlabHeap<KSessionRequest> session_request;
KSlabHeap<KSecureSystemResource> secure_system_resource;
KSlabHeap<KEventInfo> event_info;
KSlabHeap<KDebug> debug;
};
struct SlabHeapContainer;
std::unique_ptr<SlabHeapContainer> slab_heap_container;
};

1
src/core/hle/kernel/svc_types.h
View file

@ -151,6 +151,7 @@ enum class InfoType : u32 {
FreeThreadCount = 24,
ThreadTickCount = 25,
IsSvcPermitted = 26,
IoRegionHint = 27,
MesosphereMeta = 65000,
MesosphereCurrentProcess = 65001,