Re: [Qemu-devel] [PATCH v7 03/14] replay: exception replay fix

[Paolo Bonzini]

On 24/01/2017 08:17, Pavel Dovgalyuk wrote:
> @@ -451,6 +451,10 @@ static inline bool cpu_handle_exception(CPUState *cpu, 
> int *ret)
>  #ifndef CONFIG_USER_ONLY
>      } else if (replay_has_exception()
>                 && cpu->icount_decr.u16.low + cpu->icount_extra == 0) {
> +        /* Break the execution loop in case of running out of TB cache.
> +           This is needed to make flushing of the TB cache, because
> +           real flush is queued to be executed outside the cpu loop. */
> +        cpu->exception_index = EXCP_INTERRUPT;
>          /* try to cause an exception pending in the log */
>          cpu_exec_nocache(cpu, 1, tb_find(cpu, NULL, 0), true);
>          *ret = -1;

Why is replay_has_exception() related to be running out of TB cache?

Paolo