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authorWanpeng Li <wanpeng.li@hotmail.com>2016-06-30 08:52:49 +0800
committerYunhong Jiang <yunhong.jiang@linux.intel.com>2016-07-18 08:08:08 -0700
commit9b19dab47067a65808e46008e9b25929e5bed737 (patch)
tree146b1660b8422c70a95f3136b2db9d046c9ac2b9 /kernel/arch
parent6443c73ab06239ab4b1bc0511d9b78f7122f477d (diff)
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> Change-Id: Icc038176cbf361a9ecdf37ed3425108db57617f2 upstream-status: backport Signed-off-by: Yunhong Jiang <yunhong.jiang@linux.intel.com>
Diffstat (limited to 'kernel/arch')
-rw-r--r--kernel/arch/x86/kvm/lapic.c18
1 files changed, 10 insertions, 8 deletions
diff --git a/kernel/arch/x86/kvm/lapic.c b/kernel/arch/x86/kvm/lapic.c
index 701f91234..e19426843 100644
--- a/kernel/arch/x86/kvm/lapic.c
+++ b/kernel/arch/x86/kvm/lapic.c
@@ -1294,14 +1294,19 @@ 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);
@@ -1321,10 +1326,8 @@ 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);
@@ -1340,8 +1343,7 @@ 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;