linux-kernel - Re: [virtio-dev] [PATCH v3 00/15] virtio-mem: paravirtualized memory

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Date:   Thu, 14 May 2020 12:12:10 +0200
From:   David Hildenbrand <david@...hat.com>
To:     teawater <teawaterz@...ux.alibaba.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, Linux MM <linux-mm@...ck.org>,
        virtio-dev@...ts.oasis-open.org,
        Linux Virtualization <virtualization@...ts.linux-foundation.org>,
        kvm@...r.kernel.org, Michal Hocko <mhocko@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Michael S . Tsirkin" <mst@...hat.com>,
        Sebastien Boeuf <sebastien.boeuf@...el.com>,
        Samuel Ortiz <samuel.ortiz@...el.com>,
        Robert Bradford <robert.bradford@...el.com>,
        Luiz Capitulino <lcapitulino@...hat.com>,
        Pankaj Gupta <pankaj.gupta.linux@...il.com>,
        Igor Mammedov <imammedo@...hat.com>,
        "Dr . David Alan Gilbert" <dgilbert@...hat.com>,
        Alexander Duyck <alexander.h.duyck@...ux.intel.com>,
        Alexander Potapenko <glider@...gle.com>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Anthony Yznaga <anthony.yznaga@...cle.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Dave Young <dyoung@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Juergen Gross <jgross@...e.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Len Brown <lenb@...nel.org>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Michal Hocko <mhocko@...e.com>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Oscar Salvador <osalvador@...e.com>,
        Oscar Salvador <osalvador@...e.de>,
        Pavel Tatashin <pasha.tatashin@...een.com>,
        Pavel Tatashin <pavel.tatashin@...rosoft.com>,
        Pingfan Liu <kernelfans@...il.com>, Qian Cai <cai@....pw>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Stefan Hajnoczi <stefanha@...hat.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Wei Yang <richard.weiyang@...il.com>
Subject: Re: [virtio-dev] [PATCH v3 00/15] virtio-mem: paravirtualized memory

On 14.05.20 12:02, teawater wrote:
> 
> 
>> 2020年5月14日 16:48，David Hildenbrand <david@...hat.com> 写道：
>>
>> On 14.05.20 08:44, teawater wrote:
>>> Hi David,
>>>
>>> I got a kernel warning with v2 and v3.
>>
>> Hi Hui,
>>
>> thanks for playing with the latest versions. Surprisingly, I can
>> reproduce even by hotplugging a DIMM instead as well - that's good, so
>> it's not related to virtio-mem, lol. Seems to be some QEMU setup issue
>> with older machine types.
>>
>> Can you switch to a newer qemu machine version, especially
>> pc-i440fx-5.0? Both, hotplugging DIMMs and virtio-mem works for me with
>> that QEMU machine just fine.
> 
> I still could reproduce this issue with pc-i440fx-5.0 or pc.  Did I miss anything?
> 

Below I don't even see virtio_mem. I had to repair the image (filesystem
fsck) because it was broken, can you try that as well?

Also, it would be great if you could test with v4.

-- 
Thanks,

David / dhildenb