linux-kernel - Re: [PATCH] kvm: fix wrong exception emulation in check

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: <CALMp9eRy-ck4hkW8ZqE2NW1s5rq_dWEr3ZL03At=h19SrhCXmA@mail.gmail.com>
Date:   Wed, 18 Aug 2021 14:07:11 -0700
From:   Jim Mattson <jmattson@...gle.com>
To:     Hou Wenlong <houwenlong93@...ux.alibaba.com>
Cc:     kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Joerg Roedel <joro@...tes.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        Avi Kivity <avi@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kvm: fix wrong exception emulation in check_rdtsc

On Tue, Aug 17, 2021 at 8:36 PM Hou Wenlong
<houwenlong93@...ux.alibaba.com> wrote:
>
> According to Intel's SDM Vol2 and AMD's APM Vol3, when
> CR4.TSD is set, use rdtsc/rdtscp instruction above privilege
> level 0 should trigger a #GP.
>
> Fixes: d7eb82030699e ("KVM: SVM: Add intercept checks for remaining group7 instructions")
> Signed-off-by: Hou Wenlong <houwenlong93@...ux.alibaba.com>
Reviewed-by: Jim Mattson <jmattson@...gle.com>