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Date:   Thu, 23 Nov 2017 18:26:36 +0200
From:   Liran Alon <LIRAN.ALON@ORACLE.COM>
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To:     =?UTF-8?B?UmFkaW0gS3LEjW3DocWZ?= <rkrcmar@redhat.com>
CC:     Marc Haber <mh+linux-kernel@zugschlus.de>,
        LKML <linux-kernel@vger.kernel.org>,
        "KVM-ML (kvm@vger.kernel.org)" <kvm@vger.kernel.org>,
        Wanpeng Li <kernellwp@gmail.com>
Subject: Re: VMs freezing when host is running 4.14
References: <20171121161821.b6k3hdl3wgia5f5q@torres.zugschlus.de> <20171122093945.5afa2di2g7qhf4eb@torres.zugschlus.de> <CAD9gYJK7TOnfp+fnAyisYRQf--_TQv8J7h+kWH6KL98xNUH0bA@mail.gmail.com> <20171122155208.wdcmosxfpsjbwcrm@torres.zugschlus.de> <20171122164312.GA21279@flask> <20171123152024.7xsc7lesv2qyujng@torres.zugschlus.de> <20171123155946.GC21184@flask> <5A16F4BF.9060306@ORACLE.COM> <20171123162457.GB11746@flask>
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On 23/11/17 18:24, Radim Krčmář wrote:
> 2017-11-23 18:18+0200, Liran Alon:
>> On 23/11/17 17:59, Radim Krčmář wrote:
>>> Btw. there have been already many fixes from Liran Alon for that patch
>>> and your case could be the one adressed in
>>> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.spinics.net_lists_kvm_msg159158.html&d=DwIDaQ&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=Jk6Q8nNzkQ6LJ6g42qARkg6ryIDGQr-yKXPNGZbpTx0&m=206jU1rQdk3xs1DYWbQPz1gR7Iim02XOjwn458rwgIo&s=fz1JeZiSQBwqYpkmeX8OJukyC4M8BeXSuIOKwuVaeHg&e=
>>>
>>> The patch is incorrect, but you might be able to see only its benefits.
>>
>> Actually I would first attempt to check this patch of mine:
>> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.spinics.net_lists_kvm_msg159062.html&d=DwIDaQ&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=Jk6Q8nNzkQ6LJ6g42qARkg6ryIDGQr-yKXPNGZbpTx0&m=rrMFkfAUbtL2483mBNnqlNlY4qjSYBGNcZrGkRksaVQ&s=TyykS9RM7nBGxt3GgdD7Oo96RWf8ntIDptU9LJ9fQ8g&e=
>> It fixes a bug of a L2 exception accidentally being delivered into L1.
>
> Marc's guest didn't have kvm/vbox/... module loaded, so I assumed that
> we're not running L2.  Do you suspect it also fixes something else?
>
> Thanks.
>
Oh I see.
If there is no nested guest so no. My fix here probably won't help.

-Liran

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