Re: [PATCH v2 3/4] linux-user/sparc: Don't restore %g7 in sparc64_set_context()

[Laurent Vivier]

Le 06/11/2020 à 16:27, Peter Maydell a écrit :
> The kernel does not restore the g7 register in sparc64_set_context();
> neither should we. (We still save it in sparc64_get_context().)
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
>  linux-user/sparc/signal.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/linux-user/sparc/signal.c b/linux-user/sparc/signal.c
> index 43dcd137f51..ed32c7abd17 100644
> --- a/linux-user/sparc/signal.c
> +++ b/linux-user/sparc/signal.c
> @@ -447,7 +447,7 @@ void sparc64_set_context(CPUSPARCState *env)
>      __get_user(env->gregs[4], (&(*grp)[SPARC_MC_G4]));
>      __get_user(env->gregs[5], (&(*grp)[SPARC_MC_G5]));
>      __get_user(env->gregs[6], (&(*grp)[SPARC_MC_G6]));
> -    __get_user(env->gregs[7], (&(*grp)[SPARC_MC_G7]));
> +    /* Skip g7 as that's the thread register in userspace */
>  
>      /*
>       * Note that unlike the kernel, we didn't need to mess with the
> 

Applied to my linux-user-for-6.0 branch.

Thanks,
Laurent