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| author | Wanpeng Li <wanpeng.li@hotmail.com> | 2016-06-30 08:52:49 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-07-01 11:03:41 +0200 |
| commit | bd97ad0e7ed6a8870cc691fdfd108dc952fe45eb (patch) | |
| tree | 623145cd26cf98d0ade19e4f04601988ed0532f4 /arch/x86/kvm | |
| parent | 9175d2e97b08e86293e68246020a5c29f88aa674 (diff) | |
| download | lwn-bd97ad0e7ed6a8870cc691fdfd108dc952fe45eb.tar.gz lwn-bd97ad0e7ed6a8870cc691fdfd108dc952fe45eb.zip | |
KVM: x86: introduce cancel_hv_tscdeadline
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>
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/lapic.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index fdc05ae08bac..9c20ac14caf5 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -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; |