Sean Christopherson <seanjc@xxxxxxxxxx> 于2023年6月29日周四 05:19写道：
>
> On Wed, Jun 07, 2023, Jinrong Liang wrote:
> > -static struct kvm_pmu_event_filter *remove_event(struct kvm_pmu_event_filter *f,
> > +static struct kvm_pmu_event_filter *remove_event(struct __kvm_pmu_event_filter *__f,
> > uint64_t event)
>
> Can you tack on a patch to drop the return? None of the callers consume it, and
> it incorrectly implies that the incoming filter isn't modified.
Thank you very much for your suggestion! I'm more than happy to follow
your advice and modify the code accordingly.
>
> > {
> > bool found = false;
> > int i;
> > + struct kvm_pmu_event_filter *f = (void *)__f;
>
> Nit, reverse xmas tree is preferred:
>
> struct kvm_pmu_event_filter *f = (void *)__f;
> bool found = false;
> int i;
>
> Hoever, I don't think this one needs to cast, the cast is only necessary when
> invoking a KVM ioctl(), e.g. I believe this should work:
>
> static void remove_event(struct __kvm_pmu_event_filter *f, uint64_t event)
> {
> bool found = false;
> int i;
>
> for (i = 0; i < f->nevents; i++) {
> if (found)
> f->events[i - 1] = f->events[i];
> else
> found = f->events[i] == event;
> }
> if (found)
> f->nevents--;
> }
> > @@ -569,19 +554,16 @@ static void run_masked_events_test(struct kvm_vcpu *vcpu,
> > const uint64_t masked_events[],
> > const int nmasked_events)
> > {
> > - struct kvm_pmu_event_filter *f;
> > + struct __kvm_pmu_event_filter f = {
> > + .nevents = nmasked_events,
> > + .action = KVM_PMU_EVENT_ALLOW,
> > + .flags = KVM_PMU_EVENT_FLAG_MASKED_EVENTS,
>
> Tabs, not spaces please.
>
> > +static int set_pmu_single_event_filter(struct kvm_vcpu *vcpu, uint64_t event,
> > + uint32_t flags, uint32_t action)
> > +{
> > + struct __kvm_pmu_event_filter f = {
> > + .nevents = 1,
> > + .flags = flags,
> > + .action = action,
> > + .events = {
> > + event,
>
> Tabs.
I will include these change in the new patch version and ensure that
any related code is adjusted accordingly.
Once again, I truly appreciate your guidance!
