Merge pull request #2839 from Subv/global_kernel_lock

Kernel/HLE: Use a mutex  to synchronize access to the HLE kernel state between the cpu thread and any other possible threads that might touch the kernel (network thread, etc).

1 files changed, 8 insertions, 1 deletions

diff --git a/src/core/memory.cpp b/src/core/memory.cpp
index 65649d9d7..a3c5f4a9d 100644
--- a/src/core/memory.cpp
+++ b/src/core/memory.cpp
@@ -9,6 +9,7 @@
 #include "common/logging/log.h"
 #include "common/swap.h"
 #include "core/hle/kernel/process.h"
+#include "core/hle/lock.h"
 #include "core/memory.h"
 #include "core/memory_setup.h"
 #include "core/mmio.h"
@@ -181,6 +182,9 @@ T Read(const VAddr vaddr) {
         return value;
     }
 
+    // The memory access might do an MMIO or cached access, so we have to lock the HLE kernel state
+    std::lock_guard<std::mutex> lock(HLE::g_hle_lock);
+
     PageType type = current_page_table->attributes[vaddr >> PAGE_BITS];
     switch (type) {
     case PageType::Unmapped:
@@ -219,6 +223,9 @@ void Write(const VAddr vaddr, const T data) {
         return;
     }
 
+    // The memory access might do an MMIO or cached access, so we have to lock the HLE kernel state
+    std::lock_guard<std::mutex> lock(HLE::g_hle_lock);
+
     PageType type = current_page_table->attributes[vaddr >> PAGE_BITS];
     switch (type) {
     case PageType::Unmapped:
@@ -746,4 +753,4 @@ boost::optional<VAddr> PhysicalToVirtualAddress(const PAddr addr) {
     return boost::none;
 }
 
-} // namespace
+} // namespace Memory