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: <aL8fNdpoEuSERs-G@google.com>
Date: Mon, 8 Sep 2025 11:23:49 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: "Maciej S. Szmigiero" <mail@...iej.szmigiero.name>
Cc: Paolo Bonzini <pbonzini@...hat.com>, 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 Mon, Sep 08, 2025, Maciej S. Szmigiero wrote:
> 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.

I'll get the fix queued for 6.17 this, I didn't get much of anything done last
week due to KVM Forum.