linux-kernel - Re: [PATCH v2] KVM: x86/pmu: Support full width counting

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 for Android: free password hash cracker in your pocket

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

Message-ID: <aabf0a54-ff60-5c1e-279b-9c8bf18e396d@redhat.com>
Date:   Fri, 8 May 2020 11:52:26 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     like.xu@...el.com, Like Xu <like.xu@...ux.intel.com>
Cc:     Sean Christopherson <sean.j.christopherson@...el.com>,
        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
Subject: Re: [PATCH v2] KVM: x86/pmu: Support full width counting

On 08/05/20 10:42, Xu, Like wrote:
>> Given the bugs, it is clear that you should also modify the pmu.c
>> testcase for kvm-unit-tests to cover full-width writes (and especially
>> the non-full-width write behavior of MSR_IA32_PERFCTRn).  Even before
>> the QEMU side is begin worked on, you can test it with "-cpu
>> host,migratable=off".
>
> Sure, I added some testcases in pmu.c to cover this feature.
> 
> Please review the v3 patch
> https://lore.kernel.org/kvm/20200508083218.120559-1-like.xu@linux.intel.com/
> 
> as well as the kvm-unit-tests testcase.

Awesome, thanks for the quick reply!

Paolo