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KVM: x86: introduce cancel_hv_tscdeadline

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Introduce cancel_hv_tscdeadline() to encapsulate preemption
timer cancel stuff.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Yunhong Jiang <yunhong.jiang@intel.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Wanpeng Li 2016-06-30 08:52:49 +08:00 committed by Paolo Bonzini
parent 9175d2e97b
commit bd97ad0e7e
1 changed files with 10 additions and 8 deletions
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18
arch/x86/kvm/lapic.c
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@ -1349,14 +1349,19 @@ bool kvm_lapic_hv_timer_in_use(struct kvm_vcpu *vcpu)
}
EXPORT_SYMBOL_GPL(kvm_lapic_hv_timer_in_use);
static void cancel_hv_tscdeadline(struct kvm_lapic *apic)
{
kvm_x86_ops->cancel_hv_timer(apic->vcpu);
apic->lapic_timer.hv_timer_in_use = false;
}
void kvm_lapic_expired_hv_timer(struct kvm_vcpu *vcpu)
{
struct kvm_lapic *apic = vcpu->arch.apic;
WARN_ON(!apic->lapic_timer.hv_timer_in_use);
WARN_ON(swait_active(&vcpu->wq));
kvm_x86_ops->cancel_hv_timer(vcpu);
apic->lapic_timer.hv_timer_in_use = false;
cancel_hv_tscdeadline(apic);
apic_timer_expired(apic);
}
EXPORT_SYMBOL_GPL(kvm_lapic_expired_hv_timer);
@ -1376,10 +1381,8 @@ void kvm_lapic_switch_to_hv_timer(struct kvm_vcpu *vcpu)
hrtimer_cancel(&apic->lapic_timer.timer);
/* In case the sw timer triggered in the window */
if (atomic_read(&apic->lapic_timer.pending)) {
apic->lapic_timer.hv_timer_in_use = false;
kvm_x86_ops->cancel_hv_timer(apic->vcpu);
}
if (atomic_read(&apic->lapic_timer.pending))
cancel_hv_tscdeadline(apic);
}
trace_kvm_hv_timer_state(vcpu->vcpu_id,
apic->lapic_timer.hv_timer_in_use);
@ -1395,8 +1398,7 @@ void kvm_lapic_switch_to_sw_timer(struct kvm_vcpu *vcpu)
if (!apic->lapic_timer.hv_timer_in_use)
return;
kvm_x86_ops->cancel_hv_timer(vcpu);
apic->lapic_timer.hv_timer_in_use = false;
cancel_hv_tscdeadline(apic);
if (atomic_read(&apic->lapic_timer.pending))
return;