diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index b909b54..6beb0f1 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -160,6 +160,7 @@ static void __vcpu_clear(void *arg) vmcs_clear(vcpu->vmcs); if (per_cpu(current_vmcs, cpu) == vcpu->vmcs) per_cpu(current_vmcs, cpu) = NULL; + rdtscll(vcpu->host_tsc); } static void vcpu_clear(struct kvm_vcpu *vcpu) @@ -376,11 +377,16 @@ static void vmx_vcpu_load(struct kvm_vcpu *vcpu) { u64 phys_addr = __pa(vcpu->vmcs); int cpu; + u64 tsc_this, delta; cpu = get_cpu(); - if (vcpu->cpu != cpu) + if (vcpu->cpu != cpu) { vcpu_clear(vcpu); + rdtscll(tsc_this); + delta = vcpu->host_tsc - tsc_this; + vmcs_write64(TSC_OFFSET, vmcs_read64(TSC_OFFSET) + delta); + } if (per_cpu(current_vmcs, cpu) != vcpu->vmcs) { u8 error;