Re: [PATCH v1 02/21] target/alpha: add BQL to do_interrupt and cpu_exec_interrupt

[Richard Henderson]

On 8/5/20 11:12 AM, Robert Foley wrote:
> @@ -299,8 +299,12 @@ void alpha_cpu_do_interrupt(CPUState *cs)
>  {
>      AlphaCPU *cpu = ALPHA_CPU(cs);
>      CPUAlphaState *env = &cpu->env;
> -    int i = cs->exception_index;
> -
> +    int i;
> +    bool bql = !qemu_mutex_iothread_locked();
> +    if (bql) {
> +        qemu_mutex_lock_iothread();
> +    }

Why does this patch for alpha need to check qemu_mutex_iothread_locked and the
next patch for arm does not?


r~