RE: [PATCH 2/2 v5] KVM: PPC: booke: Add watchdog emulation

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> -----Original Message-----
> From: Wood Scott-B07421
> Sent: Monday, July 23, 2012 9:31 PM
> To: Bhushan Bharat-R65777
> Cc: Wood Scott-B07421; kvm-ppc@xxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx;
> agraf@xxxxxxx
> Subject: Re: [PATCH 2/2 v5] KVM: PPC: booke: Add watchdog emulation
> 
> On 07/23/2012 10:43 AM, Bhushan Bharat-R65777 wrote:
> >
> >
> >> -----Original Message-----
> >> From: Wood Scott-B07421
> >> Sent: Monday, July 23, 2012 9:02 PM
> >> To: Bhushan Bharat-R65777
> >> Cc: Wood Scott-B07421; kvm-ppc@xxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx;
> >> agraf@xxxxxxx
> >> Subject: Re: [PATCH 2/2 v5] KVM: PPC: booke: Add watchdog emulation
> >>
> >> On 07/22/2012 11:10 PM, Bhushan Bharat-R65777 wrote:
> >>>>> @@ -386,13 +387,23 @@ int kvm_arch_vcpu_init(struct kvm_vcpu
> >>>>> *vcpu) #ifdef CONFIG_KVM_EXIT_TIMING
> >>>>>  	mutex_init(&vcpu->arch.exit_timing_lock);
> >>>>>  #endif
> >>>>> -
> >>>>> +#ifdef CONFIG_BOOKE
> >>>>> +	spin_lock_init(&vcpu->arch.wdt_lock);
> >>>>> +	/* setup watchdog timer once */
> >>>>> +	setup_timer(&vcpu->arch.wdt_timer, kvmppc_watchdog_func,
> >>>>> +		    (unsigned long)vcpu);
> >>>>> +#endif
> >>>>>  	return 0;
> >>>>>  }
> >>>>
> >>>> Can you do this in kvmppc_booke_init()?
> >>>
> >>> I do not think we can do this in kvmppc_booke_init(). Watchdog have
> >>> association with vcpu, while there is no vcpu at kvmppc_booke_init().
> >>
> >> Sorry, I meant kvm_arch_vcpu_setup() in booke.c.
> >
> > Any specific reason to move this in above mentioned function? Want to avoid
> #ifdef config_booke ?
> 
> Yes, to avoid the ifdef.  We already have a (poorly named) place for booke-
> specific vcpu init.

Where we want to delete watchdog timer? 

Kvm_arch_vcpu_setup() is in flow of CREATE_VCPU ioctl, I do not see DESTROY_VCPU type of code?

So is it ok to let del_timer_sync() as is with #ifdef config_booke ?

Thanks
-Bharat


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