From 93bf4172481c4b2a8544c83a687946252563edd0 Mon Sep 17 00:00:00 2001 From: Andrey Smetanin Date: Mon, 30 Nov 2015 19:22:19 +0300 Subject: [PATCH] kvm/x86: Hyper-V internal helper to read MSR HV_X64_MSR_TIME_REF_COUNT This helper will be used also in Hyper-V SynIC timers implementation. Signed-off-by: Andrey Smetanin Reviewed-by: Roman Kagan CC: Gleb Natapov CC: Paolo Bonzini CC: "K. Y. Srinivasan" CC: Haiyang Zhang CC: Vitaly Kuznetsov CC: Roman Kagan CC: Denis V. Lunev CC: qemu-devel@nongnu.org Signed-off-by: Paolo Bonzini --- arch/x86/kvm/hyperv.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 41869a9d43f8..99589268fe5d 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -335,6 +335,11 @@ static void synic_init(struct kvm_vcpu_hv_synic *synic) } } +static u64 get_time_ref_counter(struct kvm *kvm) +{ + return div_u64(get_kernel_ns() + kvm->arch.kvmclock_offset, 100); +} + void kvm_hv_vcpu_init(struct kvm_vcpu *vcpu) { synic_init(vcpu_to_synic(vcpu)); @@ -576,11 +581,9 @@ static int kvm_hv_get_msr_pw(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) case HV_X64_MSR_HYPERCALL: data = hv->hv_hypercall; break; - case HV_X64_MSR_TIME_REF_COUNT: { - data = - div_u64(get_kernel_ns() + kvm->arch.kvmclock_offset, 100); + case HV_X64_MSR_TIME_REF_COUNT: + data = get_time_ref_counter(kvm); break; - } case HV_X64_MSR_REFERENCE_TSC: data = hv->hv_tsc_page; break; -- GitLab