linux-kernel - Re: [PATCH v2 0/2] KVM: SVM: Fix missing LAPIC TPR sync into VMCB::V

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

Message-ID: <d378c6b6-68ba-49c0-b480-5d3dec9dc902@maciej.szmigiero.name>
Date: Mon, 8 Sep 2025 16:04:32 +0200
From: "Maciej S. Szmigiero" <mail@...iej.szmigiero.name>
To: Paolo Bonzini <pbonzini@...hat.com>,
 Sean Christopherson <seanjc@...gle.com>
Cc: Maxim Levitsky <mlevitsk@...hat.com>,
 Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>,
 Naveen N Rao <naveen@...nel.org>,
 Alejandro Jimenez <alejandro.j.jimenez@...cle.com>, kvm@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/2] KVM: SVM: Fix missing LAPIC TPR sync into
 VMCB::V_TPR with AVIC on

On 25.08.2025 18:44, Maciej S. Szmigiero wrote:
> From: "Maciej S. Szmigiero" <maciej.szmigiero@...cle.com>
> 
> This is an updated v2 patch series of the v1 series located at:
> https://lore.kernel.org/kvm/cover.1755609446.git.maciej.szmigiero@oracle.com/
> 
> 
> Changes from v1:
> Fix this issue by doing unconditional LAPIC -> V_TPR sync at each VMRUN
> rather than by just patching the KVM_SET_LAPIC ioctl() code path
> (and similar ones).
> 
> 
Any further comments there?

The fix itself is trivial, would be nice to have it merged even
if the reproducer/selftest is still under discussion.

Thanks,
Maciej