linux-kernel - Re: mainline build failure due to 7966f319c66d ("drm/amd/display: Introduce DML2")

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Date:   Thu, 2 Nov 2023 17:07:18 +0000
From:   Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:     Alex Deucher <alexdeucher@...il.com>
Cc:     Rodrigo Siqueira <Rodrigo.Siqueira@....com>,
        Roman Li <roman.li@....com>,
        Qingqing Zhuo <Qingqing.Zhuo@....com>,
        Alex Deucher <alexander.deucher@....com>,
        regressions@...ts.linux.dev, Leo Li <sunpeng.li@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>, linux-kernel@...r.kernel.org,
        amd-gfx@...ts.freedesktop.org,
        "linux-kernel@...r.kernel.orgLinus Torvalds" 
        <torvalds@...ux-foundation.org>, dri-devel@...ts.freedesktop.org,
        Christian König <christian.koenig@....com>
Subject: Re: mainline build failure due to 7966f319c66d ("drm/amd/display:
 Introduce DML2")

On Thu, 2 Nov 2023 at 16:52, Alex Deucher <alexdeucher@...il.com> wrote:
>
> On Thu, Nov 2, 2023 at 5:32 AM Sudip Mukherjee (Codethink)
> <sudipm.mukherjee@...il.com> wrote:
> >
> > Hi All,
> >
> > The latest mainline kernel branch fails to build x86_64 allmodconfig
> > with the error:
> >
> > drivers/gpu/drm/amd/amdgpu/../display/dc/dml2/display_mode_core.c: In function 'dml_prefetch_check':
> > drivers/gpu/drm/amd/amdgpu/../display/dc/dml2/display_mode_core.c:6707:1: error: the frame size of 2056 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]
> >  6707 | }
> >       | ^
> >
> > git bisect pointed to 7966f319c66d ("drm/amd/display: Introduce DML2")
> >
> > I will be happy to test any patch or provide any extra log if needed.
>
> This was reported earlier and fixed by:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=089dbf6a06f1dcaeed4f8b86d619e8d28b235207
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b141fa036c901303ca5659cc22e9c08f8b097892
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5b2c54e0d0ea09f7a3b500510731878326e1117e
> but I guess maybe different compiler versions are still hitting this.

Yes, I should have mentioned. gcc-11 and gcc-12 failed to build. but
gcc-13 was ok.


-- 
Regards
Sudip