Re: [RFC PATCH v2 9/9] target/s390x: Use start-powered-off CPUState property

[Philippe Mathieu-Daudé]

On 7/22/20 5:50 AM, Thiago Jung Bauermann wrote:
> Instead of setting CPUState::halted to 1 in s390_cpu_initfn(), use the
> start-powered-off property which makes cpu_common_reset() initialize it to
> 1 in common code.
> 
> Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
> ---
>  target/s390x/cpu.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> NB: I was only able to test that this patch builds. I wasn't able to
> run it.
> 
> diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
> index 08eb674d22..d3a14af1d9 100644
> --- a/target/s390x/cpu.c
> +++ b/target/s390x/cpu.c
> @@ -291,7 +291,8 @@ static void s390_cpu_initfn(Object *obj)
>      S390CPU *cpu = S390_CPU(obj);
>  
>      cpu_set_cpustate_pointers(cpu);
> -    cs->halted = 1;
> +    object_property_set_bool(OBJECT(cs), "start-powered-off", true,
> +                             &error_abort);

Here this seems overkill since this is the same object, so you can
directly do:

  +    cs->start_powered_off = true;

>      cs->exception_index = EXCP_HLT;
>  #if !defined(CONFIG_USER_ONLY)
>      object_property_add(obj, "crash-information", "GuestPanicInformation",
>