tcg/tci: Add support for fence

Cc: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Message-Id: <20160714202026.9727-11-bobby.prani@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/tci.c b/tci.c
index b488c0d8e4..4bdc645f2a 100644
--- a/tci.c
+++ b/tci.c
@@ -1236,6 +1236,10 @@ uintptr_t tcg_qemu_tb_exec(CPUArchState *env, uint8_t *tb_ptr)
                 tcg_abort();
             }
             break;
+        case INDEX_op_mb:
+            /* Ensure ordering for all kinds */
+            smp_mb();
+            break;
         default:
             TODO();
             break;