KVM: Migrate lapic hrtimer when vcpu moves to another cpu

This reduces overhead by accessing cachelines from the wrong node, as well
as simplifying locking.

[Qing: fix for inactive or expired one-shot timer]

Signed-off-by: Yaozu (Eddie) Dong <Eddie.Dong@intel.com>
Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c
index 00119ec41669..3de9ec35ebf9 100644
--- a/drivers/kvm/svm.c
+++ b/drivers/kvm/svm.c
@@ -633,6 +633,7 @@ static void svm_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
                 delta = vcpu->host_tsc - tsc_this;
                 svm->vmcb->control.tsc_offset += delta;
                 vcpu->cpu = cpu;
+                kvm_migrate_apic_timer(vcpu);
         }
 
         for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++)