linux-kernel - Re: build failure of next-20220817 for amdgpu

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Date:   Thu, 18 Aug 2022 08:10:45 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Sudip Mukherjee <sudipm.mukherjee@...il.com>
Cc:     Alex Deucher <alexdeucher@...il.com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        linux-next <linux-next@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        amd-gfx mailing list <amd-gfx@...ts.freedesktop.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: build failure of next-20220817 for amdgpu



On 8/18/22 03:43, Sudip Mukherjee wrote:
> On Thu, Aug 18, 2022 at 3:09 AM Randy Dunlap <rdunlap@...radead.org> wrote:
>>
>>
>>
>> On 8/17/22 19:01, Alex Deucher wrote:
>>> On Wed, Aug 17, 2022 at 6:03 PM Sudip Mukherjee (Codethink)
>>> <sudipm.mukherjee@...il.com> wrote:
>>>>
>>>> Hi All,
>>>>
>>>> Not sure if it has been reported, build of next-20220817 fails with the
>>>> error:
>>>>
>>>> ERROR: modpost: "cpu_smallcore_map" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
>>>>
>>>> Trying to do a git bisect to find out the offending commit.
>>>>
>>>
>>> Thanks.  I don't see that symbol in the driver at all.  Not sure where
>>> it is coming from.
>>>
>>
>> It's powerpc only.
>>
>> Sudip, is it non-CONFIG_SMP by any chance?
> 
> Ohhh.. really sorry for the incomplete report. I should not try to
> mail while travelling.
> 
> The error is seen with powerpc allmodconfig and it has CONFIG_SMP=y.

OK, I see that also, but it doesn't make any sense (to me).

I did 'objdump' on the code file (amdgpu.o) and it's listed as
undefined but there are no code references to it.

-- 
~Randy