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Subject[PATCH 3/5] KVM: LAPIC: introduce kvm_get_lapic_target_expiration_tsc()
Date
From: Wanpeng Li <wanpeng.li@hotmail.com>

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>
---
arch/x86/kvm/lapic.c | 9 +++++++++
arch/x86/kvm/lapic.h | 1 +
arch/x86/kvm/x86.c | 2 +-
3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index dce6c0b..531fc28 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -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)
{
diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
index f60d01c..031db26 100644
--- a/arch/x86/kvm/lapic.h
+++ b/arch/x86/kvm/lapic.h
@@ -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);

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index e375235..ec53c3e 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -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
--
1.9.1
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