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-rw-r--r--main/spice-protocol/portable-membarrier.patch19
1 files changed, 19 insertions, 0 deletions
diff --git a/main/spice-protocol/portable-membarrier.patch b/main/spice-protocol/portable-membarrier.patch
new file mode 100644
index 0000000000..20a5ee3318
--- /dev/null
+++ b/main/spice-protocol/portable-membarrier.patch
@@ -0,0 +1,19 @@
+See also: https://bugs.freedesktop.org/show_bug.cgi?id=86997
+
+diff -ru spice-protocol-0.12.7/spice/barrier.h spice-0.12.5/spice-common/spice-protocol/spice/barrier.h
+--- spice-protocol-0.12.7/spice/barrier.h 2013-12-10 20:42:54.000000000 -0200
++++ spice-protocol-0.12.7/spice/barrier.h 2014-12-04 13:45:54.593329844 -0200
+@@ -34,12 +34,7 @@
+
+ #ifdef __GNUC__
+
+-#ifdef __i386__
+-#define spice_mb() __asm__ __volatile__ ("lock; addl $0,0(%%esp)": : :"memory")
+-#else
+-//mfence
+-#define spice_mb() __asm__ __volatile__ ("lock; addl $0,0(%%rsp)": : :"memory")
+-#endif
++#define spice_mb() __sync_synchronize()
+
+ #else
+