target/alpha: Enable MTTCG by default

Alpha has a weak memory ordering and issues all of the required barriers. Signed-off-by: Richard Henderson <rth@twiddle.net>
qemu · Feb 28, 2017 · 5ee4f3c · 5ee4f3c
1 parent 8f2d7c3
commit 5ee4f3c
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diff --git a/configure b/configure
@@ -5894,6 +5894,7 @@ case "$target_name" in
     TARGET_BASE_ARCH=i386
   ;;
   alpha)
+    mttcg="yes"
   ;;
   arm|armeb)
     TARGET_ARCH=arm

diff --git a/target/alpha/cpu.h b/target/alpha/cpu.h
@@ -28,6 +28,9 @@
 
 #define CPUArchState struct CPUAlphaState
 
+/* Alpha processors have a weak memory model */
+#define TCG_GUEST_DEFAULT_MO      (0)
+
 #include "exec/cpu-defs.h"
 
 #include "fpu/softfloat.h"