linux-kernel - Re: [PATCH 0/2] KVM: nVMX: Fix VPID + !EPT TLB bugs

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: <79642370-5e60-5830-b171-ca58a6e859ad@redhat.com>
Date:   Fri, 26 Nov 2021 13:11:45 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Sean Christopherson <seanjc@...gle.com>
Cc:     Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Lai Jiangshan <jiangshanlai+lkml@...il.com>
Subject: Re: [PATCH 0/2] KVM: nVMX: Fix VPID + !EPT TLB bugs

On 11/25/21 02:49, Sean Christopherson wrote:
> Fix two bugs reported by Lai where KVM mishandles guest-scoped TLB flushes
> when L2 is active.  Bugs confirmed (and confirmed fixed) by the VPID+access
> test (patches posted for kvm-unit-tests).
> 
> Sean Christopherson (2):
>    KVM: nVMX: Flush current VPID (L1 vs. L2) for KVM_REQ_TLB_FLUSH_GUEST
>    KVM: nVMX: Emulate guest TLB flush on nested VM-Enter with new vpid12
> 
>   arch/x86/kvm/vmx/nested.c | 45 +++++++++++++++++----------------------
>   arch/x86/kvm/vmx/vmx.c    | 23 ++++++++++++--------
>   arch/x86/kvm/x86.c        | 28 ++++++++++++++++++++----
>   arch/x86/kvm/x86.h        |  7 +-----
>   4 files changed, 59 insertions(+), 44 deletions(-)
> 

Queued, thanks (but I split the first in two).

Paolo