lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 10 Aug 2021 23:52:45 +0300 From: Maxim Levitsky <mlevitsk@...hat.com> To: kvm@...r.kernel.org Cc: Jim Mattson <jmattson@...gle.com>, linux-kernel@...r.kernel.org, Wanpeng Li <wanpengli@...cent.com>, Borislav Petkov <bp@...en8.de>, Joerg Roedel <joro@...tes.org>, Suravee Suthikulpanit <suravee.suthikulpanit@....com>, "H. Peter Anvin" <hpa@...or.com>, Paolo Bonzini <pbonzini@...hat.com>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Vitaly Kuznetsov <vkuznets@...hat.com>, Sean Christopherson <seanjc@...gle.com>, x86@...nel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)), Maxim Levitsky <mlevitsk@...hat.com> Subject: [PATCH v4 10/16] KVM: SVM: add warning for mistmatch between AVIC vcpu state and AVIC inhibition It is never a good idea to enter a guest on a vCPU when the AVIC inhibition state doesn't match the enablement of the AVIC on the vCPU. Signed-off-by: Maxim Levitsky <mlevitsk@...hat.com> --- arch/x86/kvm/svm/svm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index 4feff53dd1d3..6cb7ffbde03b 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -3781,6 +3781,8 @@ static __no_kcsan fastpath_t svm_vcpu_run(struct kvm_vcpu *vcpu) pre_svm_run(vcpu); + WARN_ON_ONCE(kvm_apicv_activated(vcpu->kvm) != kvm_vcpu_apicv_active(vcpu)); + sync_lapic_to_cr8(vcpu); if (unlikely(svm->asid != svm->vmcb->control.asid)) { -- 2.26.3
Powered by blists - more mailing lists