Am 30.07.2015 um 13:38 schrieb Paolo Bonzini:
>
>
> On 30/07/2015 13:22, Christian Borntraeger wrote:
>> static int kvm_s390_handle_requests(struct kvm_vcpu *vcpu)
>> {
>> - if (!vcpu->requests)
>> - return 0;
>> retry:
>> kvm_s390_vcpu_request_handled(vcpu);
>> + if (!vcpu->requests)
>> + return 0;
>> /*
>
> Should kvm_s390_vcpu_request_handled(vcpu); go before the retry label?
>
> It shouldn't be too common to have two requests, and you're doing an
> extra atomic operation to clear PROG_REQUEST.
Handling a request is slow path anyway and my last optimization was not
considering all side effects - so give me some time to comsume your comment
to make it better this time....
[...]
> This of course should be for 4.3
yes :-)
> ---I've pulled your branch into kvm/master.
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