linux-kernel - Re: [PATCH 0/3] Few nSVM bugfixes

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] [day] [month] [year] [list]

Message-ID: <d428564f-9884-7927-f635-aa29c23895a6@redhat.com>
Date:   Sat, 12 Sep 2020 18:32:49 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Maxim Levitsky <mlevitsk@...hat.com>, kvm@...r.kernel.org
Cc:     Borislav Petkov <bp@...en8.de>,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        linux-kernel@...r.kernel.org, Joerg Roedel <joro@...tes.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Ingo Molnar <mingo@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 0/3] Few nSVM bugfixes

On 27/08/20 18:27, Maxim Levitsky wrote:
> This patch series contains few nested SVM fixes from
> testing I did this weekend.
> 
> Patch #1 fixes issue where we were setting the GIF (global interrupt flag)
> on first nested VMexit, after migration thus making the nested guest crash
> from unexpected interrupts.
> 
> Patch #2 is my observation that we never setup nesed msr bitmap on nested
> state load after migration.
> 
> Patch #3 was 'migrated' ;-) from my other patch series to make it smaller,
> which is about more strict checks when we about to return to a nested guest,
> from SMM.
> 
> Best regards,
> 	Maxim Levitsky
> 
> Maxim Levitsky (3):
>   SVM: nSVM: correctly restore GIF on vmexit from nesting after
>     migration
>   SVM: nSVM: setup nested msr permission bitmap on nested state load
>   KVM: nSVM: more strict SMM checks when returning to nested guest
> 
>  arch/x86/kvm/svm/nested.c |  7 ++++++-
>  arch/x86/kvm/svm/svm.c    | 29 ++++++++++++++++++-----------
>  2 files changed, 24 insertions(+), 12 deletions(-)
> 

Queued, thanks.

Paolo