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x86/kvm/hyper-v: avoid open-coding stimer_mark_pending() in kvm_hv_notify_acked_sint()

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stimers_pending optimization only helps us to avoid multiple
kvm_make_request() calls. This doesn't happen very often and these
calls are very cheap in the first place, remove open-coded version of
stimer_mark_pending() from kvm_hv_notify_acked_sint().

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Vitaly Kuznetsov 2018-11-26 16:47:32 +01:00 committed by Paolo Bonzini
parent 8644f771e0
commit 08a800ac25
1 changed files with 3 additions and 9 deletions
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12
arch/x86/kvm/hyperv.c
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@ -180,24 +180,18 @@ static void kvm_hv_notify_acked_sint(struct kvm_vcpu *vcpu, u32 sint)
struct kvm_vcpu_hv_synic *synic = vcpu_to_synic(vcpu);
struct kvm_vcpu_hv *hv_vcpu = vcpu_to_hv_vcpu(vcpu);
struct kvm_vcpu_hv_stimer *stimer;
int gsi, idx, stimers_pending;
int gsi, idx;
trace_kvm_hv_notify_acked_sint(vcpu->vcpu_id, sint);
/* Try to deliver pending Hyper-V SynIC timers messages */
stimers_pending = 0;
for (idx = 0; idx < ARRAY_SIZE(hv_vcpu->stimer); idx++) {
stimer = &hv_vcpu->stimer[idx];
if (stimer->msg_pending && stimer->config.enable &&
!stimer->config.direct_mode &&
stimer->config.sintx == sint) {
set_bit(stimer->index,
hv_vcpu->stimer_pending_bitmap);
stimers_pending++;
}
stimer->config.sintx == sint)
stimer_mark_pending(stimer, false);
}
if (stimers_pending)
kvm_make_request(KVM_REQ_HV_STIMER, vcpu);
idx = srcu_read_lock(&kvm->irq_srcu);
gsi = atomic_read(&synic->sint_to_gsi[sint]);