From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vitaly Kuznetsov Subject: [PATCH v2 1/2] x86/kvm/hyper-v: don't recommend doing reset via synthetic MSR Date: Fri, 25 Jan 2019 12:19:33 +0100 Message-ID: <20190125111934.28782-2-vkuznets@redhat.com> References: <20190125111934.28782-1-vkuznets@redhat.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Cc: Paolo Bonzini , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Roman Kagan , Liran Alon , linux-kernel@vger.kernel.org To: kvm@vger.kernel.org Return-path: In-Reply-To: <20190125111934.28782-1-vkuznets@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org System reset through synthetic MSR is not recommended neither by genuine Hyper-V nor my QEMU. Fixes: 2bc39970e932 ("x86/kvm/hyper-v: Introduce KVM_GET_SUPPORTED_HV_CPUID") Signed-off-by: Vitaly Kuznetsov Reviewed-by: Liran Alon --- arch/x86/kvm/hyperv.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index ac44a681f065..4840f5b3c88f 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -1847,7 +1847,6 @@ int kvm_vcpu_ioctl_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid, case HYPERV_CPUID_ENLIGHTMENT_INFO: ent->eax |= HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED; ent->eax |= HV_X64_APIC_ACCESS_RECOMMENDED; - ent->eax |= HV_X64_SYSTEM_RESET_RECOMMENDED; ent->eax |= HV_X64_RELAXED_TIMING_RECOMMENDED; ent->eax |= HV_X64_CLUSTER_IPI_RECOMMENDED; ent->eax |= HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED; -- 2.20.1