diff mbox series

[PULL,08/10] linux-user/arm: Implement __kernel_memory_barrier

Message ID 20220324082016.3463521-9-laurent@vivier.eu
State Accepted
Commit 6e05e7047c7271aa27e0cdd243a20dfd6c8cada2
Headers show
Series None | expand

Commit Message

Laurent Vivier March 24, 2022, 8:20 a.m. UTC 
From: Richard Henderson <richard.henderson@linaro.org>

This fallback syscall was stubbed out.
It would only matter for emulating pre-armv6.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220323005839.94327-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
 linux-user/arm/cpu_loop.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/linux-user/arm/cpu_loop.c b/linux-user/arm/cpu_loop.c
index 032e1ffddfbd..a0e43b261c7b 100644
--- a/linux-user/arm/cpu_loop.c
+++ b/linux-user/arm/cpu_loop.c
@@ -158,7 +158,7 @@  do_kernel_trap(CPUARMState *env)
 
     switch (env->regs[15]) {
     case 0xffff0fa0: /* __kernel_memory_barrier */
-        /* ??? No-op. Will need to do better for SMP.  */
+        smp_mb();
         break;
     case 0xffff0fc0: /* __kernel_cmpxchg */
          /* XXX: This only works between threads, not between processes.