From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Herongguang (Stephen)" Subject: Re: [PATCH] KVM: x86: handle KVM_SET_VCPU_EVENTS/KVM_VCPUEVENT_VALID_SMM properly Date: Sat, 8 Oct 2016 11:31:59 +0800 Message-ID: <57F868AF.7030806@huawei.com> References: <1474606751-17100-1-git-send-email-herongguang.he@huawei.com> Mime-Version: 1.0 Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit Cc: , , , , To: , , Return-path: Received: from szxga01-in.huawei.com ([58.251.152.64]:65357 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752065AbcJHDc6 (ORCPT ); Fri, 7 Oct 2016 23:32:58 -0400 In-Reply-To: <1474606751-17100-1-git-send-email-herongguang.he@huawei.com> Sender: kvm-owner@vger.kernel.org List-ID: On 2016/9/23 12:59, herongguang wrote: > From: He Rongguang > > handle KVM_VCPUEVENT_VALID_SMM properly, or kvm-kmod/kernel will crash > in migration destination in gfn_to_rmap() since kvm_memslots_for_spte_role > is false, whilst (vcpu->arch.hflags & HF_SMM_MASK) is true > > Signed-off-by: herongguang > --- > arch/x86/kvm/x86.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c > index 699f872..7ebcb59 100644 > --- a/arch/x86/kvm/x86.c > +++ b/arch/x86/kvm/x86.c > @@ -3028,6 +3028,7 @@ static int kvm_vcpu_ioctl_x86_set_vcpu_events(struct kvm_vcpu *vcpu, > else > clear_bit(KVM_APIC_INIT, &vcpu->arch.apic->pending_events); > } > + kvm_mmu_reset_context(vcpu); > } > > kvm_make_request(KVM_REQ_EVENT, vcpu); > Hi, do you think this is OK for linux 4.9?