Re: [PATCH 4/4] Make cpu runnable after sipi

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On Sun, Sep 13, 2009 at 03:55:21PM +0300, Gleb Natapov wrote:
> On Sun, Sep 13, 2009 at 03:05:21PM +0300, Avi Kivity wrote:
> > On 09/13/2009 11:30 AM, Gleb Natapov wrote:
> > >Signed-off-by: Gleb Natapov<gleb@xxxxxxxxxx>
> > >---
> > >  hw/apic.c |    3 +++
> > >  1 files changed, 3 insertions(+), 0 deletions(-)
> > >
> > >diff --git a/hw/apic.c b/hw/apic.c
> > >index 11d4759..ac5e7ba 100644
> > >--- a/hw/apic.c
> > >+++ b/hw/apic.c
> > >@@ -534,6 +534,9 @@ void apic_sipi(CPUState *env)
> > >                             env->segs[R_CS].limit, env->segs[R_CS].flags);
> > >      env->halted = 0;
> > >      s->wait_for_sipi = 0;
> > >+#ifdef KVM_CAP_MP_STATE
> > >+    env->mp_state = KVM_MP_STATE_RUNNABLE;
> > >+#endif
> > >  }
> > 
> > -no-kvm-irqchip shouldn't use mp_state at all (since really old
> > kernels don't have this ioctl).
> > 
> Correct. Use patch below instead. mp_state shouldn't be touched if irq
> chip is in userspace. I removed pu_synchronize_state() since it is done
> before apic_init_reset() is called.
> 
> Signed-off-by: Gleb Natapov<gleb@xxxxxxxxxx>
> diff --git a/hw/apic.c b/hw/apic.c
> index 11d4759..f9fef70 100644
> --- a/hw/apic.c
> +++ b/hw/apic.c
> @@ -488,7 +488,6 @@ void apic_init_reset(CPUState *env)
>      if (!s)
>          return;
>  
> -    cpu_synchronize_state(env);
>      s->tpr = 0;
>      s->spurious_vec = 0xff;
>      s->log_dest = 0;

Gleb,

I've dropped this cleanup hunk. Please send it separately if you like.

Applied the remaining patches too, thanks.

> @@ -509,8 +508,9 @@ void apic_init_reset(CPUState *env)
>  
>      env->halted = !(s->apicbase & MSR_IA32_APICBASE_BSP);
>  #ifdef KVM_CAP_MP_STATE
> -    env->mp_state
> -        = env->halted ? KVM_MP_STATE_INIT_RECEIVED : KVM_MP_STATE_RUNNABLE;
> +    if (kvm_irqchip_in_kernel(kvm_context))
> +        env->mp_state
> +            = env->halted ? KVM_MP_STATE_UNINITIALIZED : KVM_MP_STATE_RUNNABLE;
>  #endif
>  }

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