From c34ec5e77cd9e83fcf5c929f3951557d5269b7a6 Mon Sep 17 00:00:00 2001
From: Subv <subv2112@gmail.com>
Date: Fri, 21 Jul 2017 21:28:03 -0500
Subject: [PATCH] Kernel/Memory: Switch the current page table when a new
process is scheduled.
---
src/core/hle/kernel/thread.cpp | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/src/core/hle/kernel/thread.cpp b/src/core/hle/kernel/thread.cpp
index f5f2eb2f7f..b7f094f465 100644
--- a/src/core/hle/kernel/thread.cpp
+++ b/src/core/hle/kernel/thread.cpp
@@ -178,8 +178,18 @@ static void SwitchContext(Thread* new_thread) {
Core::CPU().LoadContext(new_thread->context);
Core::CPU().SetCP15Register(CP15_THREAD_URO, new_thread->GetTLSAddress());
+
+ if (!previous_thread || previous_thread->owner_process != current_thread->owner_process) {
+ Kernel::g_current_process = current_thread->owner_process;
+ Memory::current_page_table = &Kernel::g_current_process->vm_manager.page_table;
+ // We have switched processes and thus, page tables, clear the instruction cache so we
+ // don't keep stale data from the previous process.
+ Core::CPU().ClearInstructionCache();
+ }
} else {
current_thread = nullptr;
+ // Note: We do not reset the current process and current page table when idling because
+ // technically we haven't changed processes, our threads are just paused.
}
}