diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index cd82bf74e7a551ad3954498b03af7e1cec8021b1..ddffcfbe155cd1cc6d38f2c69ed34dfed1c06a88 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -568,6 +568,7 @@ struct kvm_vcpu_arch { struct kvm_steal_time steal; } st; + u64 tsc_offset; u64 last_guest_tsc; u64 last_host_tsc; u64 tsc_offset_adjustment; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 57ffe78931042c15f35d2e3a977cacd1f43333c1..9a2cc696702a18d63e3c53cfedd4365b6f4f7c51 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1413,6 +1413,12 @@ u64 kvm_read_l1_tsc(struct kvm_vcpu *vcpu, u64 host_tsc) } EXPORT_SYMBOL_GPL(kvm_read_l1_tsc); +static void kvm_vcpu_write_tsc_offset(struct kvm_vcpu *vcpu, u64 offset) +{ + kvm_x86_ops->write_tsc_offset(vcpu, offset); + vcpu->arch.tsc_offset = offset; +} + void kvm_write_tsc(struct kvm_vcpu *vcpu, struct msr_data *msr) { struct kvm *kvm = vcpu->kvm; @@ -1522,7 +1528,7 @@ void kvm_write_tsc(struct kvm_vcpu *vcpu, struct msr_data *msr) if (guest_cpuid_has_tsc_adjust(vcpu) && !msr->host_initiated) update_ia32_tsc_adjust_msr(vcpu, offset); - kvm_x86_ops->write_tsc_offset(vcpu, offset); + kvm_vcpu_write_tsc_offset(vcpu, offset); raw_spin_unlock_irqrestore(&kvm->arch.tsc_write_lock, flags); spin_lock(&kvm->arch.pvclock_gtod_sync_lock); @@ -2750,7 +2756,7 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) if (check_tsc_unstable()) { u64 offset = kvm_compute_tsc_offset(vcpu, vcpu->arch.last_guest_tsc); - kvm_x86_ops->write_tsc_offset(vcpu, offset); + kvm_vcpu_write_tsc_offset(vcpu, offset); vcpu->arch.tsc_catchup = 1; } /*