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Subject: Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support
To:     Jim Mattson <jmattson@google.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>
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From:   Babu Moger <babu.moger@amd.com>
Message-ID: <21ee28c6-f693-e7c0-6d83-92daa9a46880@amd.com>
Date:   Wed, 20 Jan 2021 15:45:10 -0600
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On 1/20/21 3:14 PM, Jim Mattson wrote:
> 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://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.kernel.org%2Fkvm%2F160521930597.32054.4906933314022910996.stgit%40bmoger-ubuntu%2F&amp;data=04%7C01%7Cbabu.moger%40amd.com%7C507e52200cc5478e3b9308d8bd8860bc%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637467740754159704%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=Nxhg4Atzr6wZ1L7egyxQVZ%2FmVCE473%2F%2F5Fi0savgUfk%3D&amp;reserved=0
> 
> The Debian 9 release we tested is not an SEV guest.
ok. I have not tested Debian 9 before. I will try now. Will let you know
how it goes. thanks