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KVM: lapic: Refactor ->set_hv_timer to use an explicit expired param

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Refactor kvm_x86_ops->set_hv_timer to use an explicit parameter for
stating that the timer has expired.  Overloading the return value is
unnecessarily clever, e.g. can lead to confusion over the proper return
value from start_hv_timer() when r==1.

Cc: Wanpeng Li <wanpengli@tencent.com>
Cc: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson
2019-04-16 13:32:46 -07:00
committed by Paolo Bonzini
parent f1ba5cfbe4
commit f99279825e
3 changed files with 11 additions and 8 deletions
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10
arch/x86/kvm/lapic.c
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@@ -1673,7 +1673,8 @@ static void cancel_hv_timer(struct kvm_lapic *apic)
static bool start_hv_timer(struct kvm_lapic *apic)
{
struct kvm_timer *ktimer = &apic->lapic_timer;
int r;
struct kvm_vcpu *vcpu = apic->vcpu;
bool expired;
WARN_ON(preemptible());
if (!kvm_x86_ops->set_hv_timer)
@@ -1685,8 +1686,7 @@ static bool start_hv_timer(struct kvm_lapic *apic)
if (!ktimer->tscdeadline)
return false;
r = kvm_x86_ops->set_hv_timer(apic->vcpu, ktimer->tscdeadline);
if (r < 0)
if (kvm_x86_ops->set_hv_timer(vcpu, ktimer->tscdeadline, &expired))
return false;
ktimer->hv_timer_in_use = true;
@@ -1704,13 +1704,13 @@ static bool start_hv_timer(struct kvm_lapic *apic)
*/
if (atomic_read(&ktimer->pending)) {
cancel_hv_timer(apic);
} else if (r) {
} else if (expired) {
apic_timer_expired(apic);
cancel_hv_timer(apic);
}
}
trace_kvm_hv_timer_state(apic->vcpu->vcpu_id, ktimer->hv_timer_in_use);
trace_kvm_hv_timer_state(vcpu->vcpu_id, ktimer->hv_timer_in_use);
return true;
}