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KVM: Migrate lapic hrtimer when vcpu moves to another cpu

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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>
This commit is contained in:
Eddie Dong
2007-09-03 16:15:12 +03:00
committed by Avi Kivity
parent 1b9778dae7
commit a3d7f85f47
4 changed files with 19 additions and 1 deletions
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4
drivers/kvm/vmx.c
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@@ -441,8 +441,10 @@ static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
u64 phys_addr = __pa(vmx->vmcs);
u64 tsc_this, delta;
if (vcpu->cpu != cpu)
if (vcpu->cpu != cpu) {
vcpu_clear(vmx);
kvm_migrate_apic_timer(vcpu);
}
if (per_cpu(current_vmcs, cpu) != vmx->vmcs) {
u8 error;