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Re: [Qemu-devel] [PATCH] linux-user: Implement membarrier syscall
From: |
Laurent Vivier |
Subject: |
Re: [Qemu-devel] [PATCH] linux-user: Implement membarrier syscall |
Date: |
Tue, 18 Feb 2020 22:33:03 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 |
Le 13/05/2019 à 11:02, Andreas Schwab a écrit :
> Signed-off-by: Andreas Schwab <address@hidden>
> ---
> linux-user/syscall.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/linux-user/syscall.c b/linux-user/syscall.c
> index f5ff6f5dc8..80399f4eb0 100644
> --- a/linux-user/syscall.c
> +++ b/linux-user/syscall.c
> @@ -313,6 +313,9 @@ _syscall3(int, getrandom, void *, buf, size_t, buflen,
> unsigned int, flags)
> _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type,
> unsigned long, idx1, unsigned long, idx2)
> #endif
> +#if defined(TARGET_NR_membarrier) && defined(__NR_membarrier)
> +_syscall2(int, membarrier, int, cmd, int, flags)
> +#endif
>
> static bitmask_transtbl fcntl_flags_tbl[] = {
> { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, },
> @@ -11620,6 +11623,10 @@ static abi_long do_syscall1(void *cpu_env, int num,
> abi_long arg1,
> /* PowerPC specific. */
> return do_swapcontext(cpu_env, arg1, arg2, arg3);
> #endif
> +#if defined TARGET_NR_membarrier && defined __NR_membarrier
> + case TARGET_NR_membarrier:
> + return get_errno(membarrier(arg1, arg2));
> +#endif
>
> default:
> qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
>
Applied to my linux-user branch.
Thanks,
Laurent
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