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authorWanpeng Li <wanpengli@tencent.com>2019-08-01 11:30:13 +0800
committerPaolo Bonzini <pbonzini@redhat.com>2019-08-05 12:55:45 +0200
commita48d06f9b7cedbb8ad7804d1720168b7ee6a34e7 (patch)
tree6922286f3f80af87baca222e0f3736c486c1dc9a /arch
parent266e85a5ec9100dcd9ae03601453bbc96fefee5d (diff)
downloadlinux-a48d06f9b7cedbb8ad7804d1720168b7ee6a34e7.tar.bz2
KVM: LAPIC: Don't need to wakeup vCPU twice afer timer fire
kvm_set_pending_timer() will take care to wake up the sleeping vCPU which has pending timer, don't need to check this in apic_timer_expired() again. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Wanpeng Li <wanpengli@tencent.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kvm/lapic.c8
1 files changed, 0 insertions, 8 deletions
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 0aa158657f20..685d17c11461 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -1548,7 +1548,6 @@ static void kvm_apic_inject_pending_timer_irqs(struct kvm_lapic *apic)
static void apic_timer_expired(struct kvm_lapic *apic)
{
struct kvm_vcpu *vcpu = apic->vcpu;
- struct swait_queue_head *q = &vcpu->wq;
struct kvm_timer *ktimer = &apic->lapic_timer;
if (atomic_read(&apic->lapic_timer.pending))
@@ -1566,13 +1565,6 @@ static void apic_timer_expired(struct kvm_lapic *apic)
atomic_inc(&apic->lapic_timer.pending);
kvm_set_pending_timer(vcpu);
-
- /*
- * For x86, the atomic_inc() is serialized, thus
- * using swait_active() is safe.
- */
- if (swait_active(q))
- swake_up_one(q);
}
static void start_sw_tscdeadline(struct kvm_lapic *apic)