Re: [PATCH RESEND] KVM: Boosting vCPUs that are delivering interrupts

[Christian Borntraeger]

On 18.07.19 09:59, Paolo Bonzini wrote:
> On 12/07/19 09:15, Wanpeng Li wrote:
>> diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
>> index b4ab59d..2c46705 100644
>> --- a/virt/kvm/kvm_main.c
>> +++ b/virt/kvm/kvm_main.c
>> @@ -2404,8 +2404,10 @@ void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
>>  	int me;
>>  	int cpu = vcpu->cpu;
>>  
>> -	if (kvm_vcpu_wake_up(vcpu))
>> +	if (kvm_vcpu_wake_up(vcpu)) {
>> +		vcpu->preempted = true;
>>  		return;
>> +	}
>>  
>>  	me = get_cpu();
>>  	if (cpu != me && (unsigned)cpu < nr_cpu_ids && cpu_online(cpu))
>>
> 
> Who is resetting vcpu->preempted to false in this case?  This also
> applies to s390 in fact.

Isnt that done by the sched_in handler?