[Qemu-devel] [PATCH] linux-user: Implement ARM __kernel_memory_barrier

[Timothy E Baldwin]

Implemented ARM __kernel_memory_barrier using GCC/clang
builtin __sync_synchronize().

Signed-off-by: Timothy Edward Baldwin <address@hidden>
---
 linux-user/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/linux-user/main.c b/linux-user/main.c
index 2c9658e..f4b81b1 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -531,7 +531,7 @@ do_kernel_trap(CPUARMState *env)
 
     switch (env->regs[15]) {
     case 0xffff0fa0: /* __kernel_memory_barrier */
-        /* ??? No-op. Will need to do better for SMP.  */
+        __sync_synchronize();
         break;
     case 0xffff0fc0: /* __kernel_cmpxchg */
          /* XXX: This only works between threads, not between processes.
-- 
2.1.4