Re: [Qemu-devel] [PATCH 3/5] target-i386: call x86_cpu_realize() after APIC is initialized.

["Andreas Färber" <afaerber@suse.de>]

Am 20.06.2012 14:59, schrieb Igor Mammedov:
> It's not correct to make CPU runnable (i.e. calling x86_cpu_realize())
> when not all properties are set (APIC in this case).
> 
> Fix it by calling x86_cpu_realize() at board level after APIC is
> initialized, right before cpu_reset().
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
>  hw/pc.c              |    1 +
>  target-i386/helper.c |    2 --
>  2 files changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/hw/pc.c b/hw/pc.c
> index 8368701..8a662cf 100644
> --- a/hw/pc.c
> +++ b/hw/pc.c
> @@ -948,6 +948,7 @@ static X86CPU *pc_new_cpu(const char *cpu_model)
>          env->apic_state = apic_init(env, env->cpuid_apic_id);
>      }
>      qemu_register_reset(pc_cpu_reset, cpu);
> +    x86_cpu_realize(OBJECT(cpu), NULL);
>      pc_cpu_reset(cpu);
>      return cpu;
>  }
> diff --git a/target-i386/helper.c b/target-i386/helper.c
> index c52ec13..b38ea7f 100644
> --- a/target-i386/helper.c
> +++ b/target-i386/helper.c
> @@ -1161,8 +1161,6 @@ X86CPU *cpu_x86_init(const char *cpu_model)
>          return NULL;
>      }
>  
> -    x86_cpu_realize(OBJECT(cpu), NULL);
> -
>      return cpu;
>  }
>  

This will require changes in linux-user and possibly bsd-user. Having a
cpu_realize() would probably help with avoiding #ifdef'ery.
Unfortunately deriving CPUState from DeviceState proves a bit difficult
in the meantime (it worked at one point, now there's lots of circular
header dependencies), and realize support for Object got stopped.

Andreas

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