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[PULL 08/10] linux-user/arm: Implement __kernel_memory_barrier
From: |
Laurent Vivier |
Subject: |
[PULL 08/10] linux-user/arm: Implement __kernel_memory_barrier |
Date: |
Thu, 24 Mar 2022 09:20:14 +0100 |
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 --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.
--
2.35.1
- [PULL 00/10] Linux user for 7.0 patches, Laurent Vivier, 2022/03/24
- [PULL 02/10] linux-user/alpha: Fix sigsuspend for big-endian hosts, Laurent Vivier, 2022/03/24
- [PULL 03/10] linux-user: Split out helpers for sigsuspend, Laurent Vivier, 2022/03/24
- [PULL 06/10] linux-user: Properly handle sigset arg to ppoll, Laurent Vivier, 2022/03/24
- [PULL 08/10] linux-user/arm: Implement __kernel_memory_barrier,
Laurent Vivier <=
- [PULL 10/10] linux-user/arm: Implement __kernel_cmpxchg64 with host atomics, Laurent Vivier, 2022/03/24
- [PULL 07/10] linux-user: Fix missing space in error message, Laurent Vivier, 2022/03/24
- [PULL 04/10] linux-user: Properly handle sigset arg to pselect, Laurent Vivier, 2022/03/24
- [PULL 05/10] linux-user: Properly handle sigset arg to epoll_pwait, Laurent Vivier, 2022/03/24
- [PULL 09/10] linux-user/arm: Implement __kernel_cmpxchg with host atomics, Laurent Vivier, 2022/03/24
- [PULL 01/10] linux-user: Fix syscall parameter handling for MIPS n32, Laurent Vivier, 2022/03/24
- Re: [PULL 00/10] Linux user for 7.0 patches, Peter Maydell, 2022/03/24