From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Waychison Subject: [PATCH] kvm: get_msr support for HV_X64_MSR_APIC_ASSIST_PAGE Date: Thu, 21 Jul 2011 15:38:10 -0700 Message-ID: <1311287890-22124-1-git-send-email-mikew@google.com> Cc: x86@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Mike Waychison To: Cory Maccarrone , Andy Thornton , Miche Baker-Harvey , Avi Kivity , Marcelo Tosatti , Return-path: Received: from smtp-out.google.com ([74.125.121.67]:45106 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751041Ab1GUWiY (ORCPT ); Thu, 21 Jul 2011 18:38:24 -0400 Sender: kvm-owner@vger.kernel.org List-ID: "get" support for the HV_X64_MSR_APIC_ASSIST_PAGE msr was missing, even though it is explicitly enumerated as something the vmm should save in msrs_to_save and reported to userland via the KVM_GET_MSR_INDEX_LIST ioctl. Add "get" support for HV_X64_MSR_APIC_ASSIST_PAGE. We simply return the guest visible value of this register, which seems to be correct as a set on the register is validated for us already. Signed-off-by: Mike Waychison --- arch/x86/kvm/x86.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 77c9d86..15148ef 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1748,6 +1748,8 @@ static int get_msr_hyperv(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) return kvm_hv_vapic_msr_read(vcpu, APIC_ICR, pdata); case HV_X64_MSR_TPR: return kvm_hv_vapic_msr_read(vcpu, APIC_TASKPRI, pdata); + case HV_X64_MSR_APIC_ASSIST_PAGE: + return vcpu->arch.hv_vapic; default: pr_unimpl(vcpu, "Hyper-V unhandled rdmsr: 0x%x\n", msr); return 1; -- 1.7.3.1