From dceb9550c95d89f3d2b7e374bde9b47cb9d35091 Mon Sep 17 00:00:00 2001
From: Ben Vanik <ben.vanik@gmail.com>
Date: Mon, 18 May 2015 19:17:07 -0700
Subject: [PATCH] Adding global lock for slist (this is what reactos does).

---
 src/xenia/kernel/xboxkrnl_threading.cc | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/xenia/kernel/xboxkrnl_threading.cc b/src/xenia/kernel/xboxkrnl_threading.cc
index 4b0cb1574..518c78dbf 100644
--- a/src/xenia/kernel/xboxkrnl_threading.cc
+++ b/src/xenia/kernel/xboxkrnl_threading.cc
@@ -1289,13 +1289,17 @@ SHIM_CALL KeRemoveQueueDpc_shim(PPCContext* ppc_state, KernelState* state) {
   SHIM_SET_RETURN_64(result ? 1 : 0);
 }
 
+std::mutex global_list_mutex_;
+
 // http://www.nirsoft.net/kernel_struct/vista/SLIST_HEADER.html
-SHIM_CALL InterlockedPopEntrySList_shim(PPCContext* ppc_state, KernelState* state) {
+SHIM_CALL InterlockedPopEntrySList_shim(PPCContext* ppc_state,
+                                        KernelState* state) {
   uint32_t plist_ptr = SHIM_GET_ARG_32(0);
 
   XELOGD("InterlockedPopEntrySList(%.8X)", plist_ptr);
 
-  // TODO: Interlocked part of this
+  std::lock_guard<std::mutex> lock(global_list_mutex_);
+
   uint8_t* p = state->memory()->TranslateVirtual(plist_ptr);
   auto first = xe::load_and_swap<uint32_t>(p);
   if (first == 0) {