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KVM: LAPIC: introduce kvm_get_lapic_target_expiration_tsc()

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Introdce kvm_get_lapic_target_expiration_tsc() to get APIC Timer target
deadline tsc.

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: Radim Krčmář <rkrcmar@redhat.com>
This commit is contained in:
Wanpeng Li 2016-10-24 18:23:11 +08:00 committed by Paolo Bonzini
parent a10388e11f
commit 498f816219
3 changed files with 11 additions and 1 deletions
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9
arch/x86/kvm/lapic.c
View File

@ -1706,6 +1706,15 @@ void kvm_free_lapic(struct kvm_vcpu *vcpu)
* LAPIC interface
*----------------------------------------------------------------------
*/
u64 kvm_get_lapic_target_expiration_tsc(struct kvm_vcpu *vcpu)
{
struct kvm_lapic *apic = vcpu->arch.apic;
if (!lapic_in_kernel(vcpu))
return 0;
return apic->lapic_timer.tscdeadline;
}
u64 kvm_get_lapic_tscdeadline_msr(struct kvm_vcpu *vcpu)
{

1
arch/x86/kvm/lapic.h
View File

@ -85,6 +85,7 @@ int kvm_apic_get_state(struct kvm_vcpu *vcpu, struct kvm_lapic_state *s);
int kvm_apic_set_state(struct kvm_vcpu *vcpu, struct kvm_lapic_state *s);
int kvm_lapic_find_highest_irr(struct kvm_vcpu *vcpu);
u64 kvm_get_lapic_target_expiration_tsc(struct kvm_vcpu *vcpu);
u64 kvm_get_lapic_tscdeadline_msr(struct kvm_vcpu *vcpu);
void kvm_set_lapic_tscdeadline_msr(struct kvm_vcpu *vcpu, u64 data);

2
arch/x86/kvm/x86.c
View File

@ -2794,7 +2794,7 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
}
if (kvm_lapic_hv_timer_in_use(vcpu) &&
kvm_x86_ops->set_hv_timer(vcpu,
kvm_get_lapic_tscdeadline_msr(vcpu)))
kvm_get_lapic_target_expiration_tsc(vcpu)))
kvm_lapic_switch_to_sw_timer(vcpu);
/*
* On a host with synchronized TSC, there is no need to update