Re: [Qemu-devel] [PATCH v12 12/24] tcg: handle EXCP_ATOMIC exception for system emulation

["Alex Bennée" <alex.bennee@linaro.org>]

Richard Henderson <rth@twiddle.net> writes:

> On 02/13/2017 11:10 PM, Alex Bennée wrote:
>> @@ -239,9 +240,16 @@ static void cpu_exec_step(CPUState *cpu)
<snip>
>> +                } else if (r == EXCP_ATOMIC) {
>> +                    qemu_mutex_unlock_iothread();
>> +                    cpu_exec_step_atomic(cpu);
>> +                    qemu_mutex_lock_iothread();
> ...
>> +            case EXCP_ATOMIC:
>> +                qemu_mutex_unlock_iothread();
>> +                cpu_exec_step_atomic(cpu);
>> +                qemu_mutex_lock_iothread();
>
>
> I just noticed this, but if you have to do a v13, it might be best to
> move these locks inside cpu_exec_step_atomic, as with tcg_cpu_exec.
> Otherwise leave it for later.

Will that work given cpu_exec_step_atomic() is common between linux-user
and system emulation?

--
Alex Bennée