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Commit 93bf4172 authored by Andrey Smetanin's avatar Andrey Smetanin Committed by Paolo Bonzini
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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: default avatarAndrey Smetanin <asmetanin@virtuozzo.com>
Reviewed-by: default avatarRoman Kagan <rkagan@virtuozzo.com>
CC: Gleb Natapov <gleb@kernel.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: "K. Y. Srinivasan" <kys@microsoft.com>
CC: Haiyang Zhang <haiyangz@microsoft.com>
CC: Vitaly Kuznetsov <vkuznets@redhat.com>
CC: Roman Kagan <rkagan@virtuozzo.com>
CC: Denis V. Lunev <den@openvz.org>
CC: qemu-devel@nongnu.org
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 0ae80384

arch/x86/kvm/hyperv.c

+7 −4
Original line number Diff line number Diff line
@@ -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;