Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
MIME-Version: 1.0
References: <159985237526.11252.1516487214307300610.stgit@bmoger-ubuntu>
 <83a96ca9-0810-6c07-2e45-5aa2da9b1ab0@redhat.com> <5df9b517-448f-d631-2222-6e78d6395ed9@amd.com>
 <CALMp9eRDSW66+XvbHVF4ohL7XhThoPoT0BrB0TcS0cgk=dkcBg@mail.gmail.com> <bb2315e3-1c24-c5ae-3947-27c5169a9d47@amd.com>
In-Reply-To: <bb2315e3-1c24-c5ae-3947-27c5169a9d47@amd.com>
From:   Jim Mattson <jmattson@google.com>
Date:   Wed, 20 Jan 2021 13:14:17 -0800
Message-ID: <CALMp9eQBY50kZT6WdM-D2gmUgDZmCYTn+kxcxk8EQTg=SygLKA@mail.gmail.com>
Subject: Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support
To:     Babu Moger <babu.moger@amd.com>
Cc:     Paolo Bonzini <pbonzini@redhat.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Wanpeng Li <wanpengli@tencent.com>,
        kvm list <kvm@vger.kernel.org>, Joerg Roedel <joro@8bytes.org>,
        "the arch/x86 maintainers" <x86@kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H . Peter Anvin" <hpa@zytor.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Makarand Sonare <makarandsonare@google.com>,
        Sean Christopherson <seanjc@google.com>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Tue, Jan 19, 2021 at 3:45 PM Babu Moger <babu.moger@amd.com> wrote:
>
>
>
> On 1/19/21 5:01 PM, Jim Mattson wrote:
> > On Mon, Sep 14, 2020 at 11:33 AM Babu Moger <babu.moger@amd.com> wrote:
> >
> >> Thanks Paolo. Tested Guest/nested guest/kvm units tests. Everything works
> >> as expected.
> >
> > Debian 9 does not like this patch set. As a kvm guest, it panics on a
> > Milan CPU unless booted with 'nopcid'. Gmail mangles long lines, so
> > please see the attached kernel log snippet. Debian 10 is fine, so I
> > assume this is a guest bug.
> >
>
> We had an issue with PCID feature earlier. This was showing only with SEV
> guests. It is resolved recently. Do you think it is not related that?
> Here are the patch set.
> https://lore.kernel.org/kvm/160521930597.32054.4906933314022910996.stgit@bmoger-ubuntu/

The Debian 9 release we tested is not an SEV guest.