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kern: implement new thread context/fpu semantics

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This commit is contained in:
Michael Scire
2022-03-22 19:59:39 -07:00
committed by SciresM
parent 79afa3b64c
commit 6e17317d5d
21 changed files with 1291 additions and 668 deletions
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36
libraries/libmesosphere/source/arch/arm64/kern_k_interrupt_manager.cpp
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@@ -178,19 +178,37 @@ namespace ams::kern::arch::arm64 {
/* If we need scheduling, */
if (needs_scheduling) {
/* If the user disable count is set, we may need to pin the current thread. */
if (user_mode && GetCurrentThread().GetUserDisableCount() != 0 && GetCurrentProcess().GetPinnedThread(GetCurrentCoreId()) == nullptr) {
KScopedSchedulerLock sl;
if (user_mode) {
/* If the interrupt occurred in the middle of a userland cache maintenance operation, ensure memory consistency before rescheduling. */
if (GetCurrentThread().IsInUserCacheMaintenanceOperation()) {
cpu::DataSynchronizationBarrier();
}
/* Pin the current thread. */
GetCurrentProcess().PinCurrentThread();
/* If the user disable count is set, we may need to pin the current thread. */
if (GetCurrentThread().GetUserDisableCount() != 0 && GetCurrentProcess().GetPinnedThread(GetCurrentCoreId()) == nullptr) {
KScopedSchedulerLock sl;
/* Set the interrupt flag for the thread. */
GetCurrentThread().SetInterruptFlag();
/* Pin the current thread. */
GetCurrentProcess().PinCurrentThread();
/* Request interrupt scheduling. */
Kernel::GetScheduler().RequestScheduleOnInterrupt();
/* Set the interrupt flag for the thread. */
GetCurrentThread().SetInterruptFlag();
/* Request interrupt scheduling. */
Kernel::GetScheduler().RequestScheduleOnInterrupt();
} else {
/* Request interrupt scheduling. */
Kernel::GetScheduler().RequestScheduleOnInterrupt();
}
} else {
/* If the interrupt occurred in the middle of a cache maintenance operation, ensure memory consistency before rescheduling. */
if (GetCurrentThread().IsInCacheMaintenanceOperation()) {
cpu::DataSynchronizationBarrier();
} else if (GetCurrentThread().IsInTlbMaintenanceOperation()) {
/* Otherwise, if we're in the middle of a tlb maintenance operation, ensure inner shareable memory consistency before rescheduling. */
cpu::DataSynchronizationBarrierInnerShareable();
}
/* Request interrupt scheduling. */
Kernel::GetScheduler().RequestScheduleOnInterrupt();
}