linux-kernel - Re: mmotm 2020-03-30-18-46 uploaded (VDPA + vhost)

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Message-ID: <cd94bd62-57c4-b82e-0434-8a470a9ea613@infradead.org>
Date:   Wed, 1 Apr 2020 10:13:10 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     akpm@...ux-foundation.org, broonie@...nel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-next@...r.kernel.org, mhocko@...e.cz,
        mm-commits@...r.kernel.org, sfr@...b.auug.org.au,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        virtualization@...ts.linux-foundation.org,
        Jason Wang <jasowang@...hat.com>
Subject: Re: mmotm 2020-03-30-18-46 uploaded (VDPA + vhost)

On 3/31/20 12:22 PM, Michael S. Tsirkin wrote:
> On Tue, Mar 31, 2020 at 11:42:47AM -0700, Randy Dunlap wrote:
>> On 3/31/20 11:37 AM, Michael S. Tsirkin wrote:
>>> On Tue, Mar 31, 2020 at 11:27:54AM -0700, Randy Dunlap wrote:
>>>> On 3/30/20 6:47 PM, akpm@...ux-foundation.org wrote:
>>>>> The mm-of-the-moment snapshot 2020-03-30-18-46 has been uploaded to
>>>>>
>>>>>    http://www.ozlabs.org/~akpm/mmotm/
>>>>>
>>>>> mmotm-readme.txt says
>>>>>
>>>>> README for mm-of-the-moment:
>>>>>
>>>>> http://www.ozlabs.org/~akpm/mmotm/
>>>>>
>>>>> This is a snapshot of my -mm patch queue.  Uploaded at random hopefully
>>>>> more than once a week.
>>>>>
>>>>> You will need quilt to apply these patches to the latest Linus release (5.x
>>>>> or 5.x-rcY).  The series file is in broken-out.tar.gz and is duplicated in
>>>>> http://ozlabs.org/~akpm/mmotm/series
>>>>>
>>>>> The file broken-out.tar.gz contains two datestamp files: .DATE and
>>>>> .DATE-yyyy-mm-dd-hh-mm-ss.  Both contain the string yyyy-mm-dd-hh-mm-ss,
>>>>> followed by the base kernel version against which this patch series is to
>>>>> be applied.
>>>>>
>>>>> This tree is partially included in linux-next.  To see which patches are
>>>>> included in linux-next, consult the `series' file.  Only the patches
>>>>> within the #NEXT_PATCHES_START/#NEXT_PATCHES_END markers are included in
>>>>> linux-next.
>>>>>
>>>>>
>>>>> A full copy of the full kernel tree with the linux-next and mmotm patches
>>>>> already applied is available through git within an hour of the mmotm
>>>>> release.  Individual mmotm releases are tagged.  The master branch always
>>>>> points to the latest release, so it's constantly rebasing.
>>>>>
>>>>> 	https://github.com/hnaz/linux-mm
>>>>
>>>> on i386:
>>>>
>>>> ld: drivers/vhost/vdpa.o: in function `vhost_vdpa_init':
>>>> vdpa.c:(.init.text+0x52): undefined reference to `__vdpa_register_driver'
>>>> ld: drivers/vhost/vdpa.o: in function `vhost_vdpa_exit':
>>>> vdpa.c:(.exit.text+0x14): undefined reference to `vdpa_unregister_driver'
>>>>
>>>>
>>>>
>>>> drivers/virtio/vdpa/ is not being built. (confusing!)
>>>>
>>>> CONFIG_VIRTIO=m
>>>> # CONFIG_VIRTIO_MENU is not set
>>>> CONFIG_VDPA=y
>>>
>>> Hmm. OK. Can't figure it out. CONFIG_VDPA is set why isn't
>>> drivers/virtio/vdpa/ built?
>>> we have:
>>>
>>
>> Ack.  Hopefully Yamada-san can tell us what is happening here.
> 
> OK I pushed a fix (moving the vdpa subsystem up a level) and pushed into
> my tree, refs/heads/next .  Seems to build fine now, but I'd appreciate
> it if you can give it a spin.

This now builds successfully on linux-next of 20200401.

Thanks.

-- 
~Randy