core: hle: kernel: Implement thread pinning.

- We largely had the mechanics in place for thread pinning, this change hooks these up.
- Validated with tests https://github.com/Atmosphere-NX/Atmosphere/blob/master/tests/TestSvc/source/test_thread_pinning.cpp.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/core/hle/kernel/global_scheduler_context.cpp b/src/core/hle/kernel/global_scheduler_context.cpp
index 4f4e338e3..baad2c5d6 100644
--- a/src/core/hle/kernel/global_scheduler_context.cpp
+++ b/src/core/hle/kernel/global_scheduler_context.cpp
@@ -9,6 +9,7 @@
 #include "core/hle/kernel/global_scheduler_context.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/physical_core.h"
 
 namespace Kernel {
 
@@ -42,6 +43,11 @@ void GlobalSchedulerContext::PreemptThreads() {
     for (u32 core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; core_id++) {
         const u32 priority = preemption_priorities[core_id];
         kernel.Scheduler(core_id).RotateScheduledQueue(core_id, priority);
+
+        // Signal an interrupt occurred. For core 3, this is a certainty, as preemption will result
+        // in the rotator thread being scheduled. For cores 0-2, this is to simulate or system
+        // interrupts that may have occurred.
+        kernel.PhysicalCore(core_id).Interrupt();
     }
 }