Re: [Qemu-devel] [RFC PATCH v2 18/26] cpu-exec: don't overwrite exception_index

[Paolo Bonzini]

On 14/11/2017 09:18, Pavel Dovgalyuk wrote:
> This patch adds a condition before overwriting exception_index fiels.
> It is needed when exception_index is already set to some meaningful value.
> 
> Signed-off-by: Pavel Dovgalyuk <address@hidden>
> 
> ---
>  accel/tcg/cpu-exec.c |    4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
> index 61297f8..0473055 100644
> --- a/accel/tcg/cpu-exec.c
> +++ b/accel/tcg/cpu-exec.c
> @@ -594,7 +594,9 @@ static inline bool cpu_handle_interrupt(CPUState *cpu,
>      if (unlikely(atomic_read(&cpu->exit_request)
>          || (use_icount && cpu->icount_decr.u16.low + cpu->icount_extra == 
> 0))) {
>          atomic_set(&cpu->exit_request, 0);
> -        cpu->exception_index = EXCP_INTERRUPT;
> +        if (cpu->exception_index == -1) {
> +            cpu->exception_index = EXCP_INTERRUPT;
> +        }
>          return true;
>      }
>  
> 

Thanks, queued for 2.11.

Paolo