linux-kernel - [PATCH v2 0/4] AVIC bugfixes and workarounds

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 linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230928173354.217464-1-mlevitsk@redhat.com>
Date:   Thu, 28 Sep 2023 20:33:50 +0300
From:   Maxim Levitsky <mlevitsk@...hat.com>
To:     kvm@...r.kernel.org
Cc:     iommu@...ts.linux.dev, "H. Peter Anvin" <hpa@...or.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Maxim Levitsky <mlevitsk@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>, Joerg Roedel <joro@...tes.org>,
        x86@...nel.org,
        Suravee Suthikulpanit <suravee.suthikulpanit@....com>,
        linux-kernel@...r.kernel.org,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Will Deacon <will@...nel.org>, Ingo Molnar <mingo@...hat.com>,
        Robin Murphy <robin.murphy@....com>
Subject: [PATCH v2 0/4] AVIC bugfixes and workarounds

This patch series includes several fixes to AVIC I found while working
on a new version of nested AVIC code.

Also while developing it I realized that a very simple workaround for
AVIC's errata #1235 exists and included it in this patch series as well.

changes since v2:

- added 'fixes' tags
- reworked workaround for avic errata #1235
- dropped iommu patch as it is no longer needed.

Best regards,
        Maxim Levitsky

Maxim Levitsky (4):
  x86: KVM: SVM: always update the x2avic msr interception
  x86: KVM: SVM: add support for Invalid IPI Vector interception
  x86: KVM: SVM: refresh AVIC inhibition in svm_leave_nested()
  x86: KVM: SVM: workaround for AVIC's errata #1235

 arch/x86/include/asm/svm.h |  1 +
 arch/x86/kvm/svm/avic.c    | 68 +++++++++++++++++++++++++++-----------
 arch/x86/kvm/svm/nested.c  |  3 ++
 arch/x86/kvm/svm/svm.c     |  3 +-
 arch/x86/kvm/svm/svm.h     |  1 +
 5 files changed, 55 insertions(+), 21 deletions(-)

-- 
2.26.3