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From:   Alex Deucher <alexdeucher@gmail.com>
Date:   Thu, 2 Nov 2023 18:53:10 -0400
Message-ID: <CADnq5_Ou7Cq071DJZnq+3PDNqkd3ZJb+dCEvMjiked6_t=E6MA@mail.gmail.com>
Subject: Re: mainline build failure due to 7966f319c66d ("drm/amd/display:
 Introduce DML2")
To:     Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc:     Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>,
        Roman Li <roman.li@amd.com>,
        Qingqing Zhuo <Qingqing.Zhuo@amd.com>,
        Alex Deucher <alexander.deucher@amd.com>,
        regressions@lists.linux.dev, Leo Li <sunpeng.li@amd.com>,
        "Pan, Xinhui" <Xinhui.Pan@amd.com>, linux-kernel@vger.kernel.org,
        amd-gfx@lists.freedesktop.org,
        "linux-kernel@vger.kernel.orgLinus Torvalds" 
        <torvalds@linux-foundation.org>, dri-devel@lists.freedesktop.org,
        =?UTF-8?Q?Christian_K=C3=B6nig?= <christian.koenig@amd.com>
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On Thu, Nov 2, 2023 at 1:07=E2=80=AFPM Sudip Mukherjee
<sudipm.mukherjee@gmail.com> wrote:
>
> On Thu, 2 Nov 2023 at 16:52, Alex Deucher <alexdeucher@gmail.com> wrote:
> >
> > On Thu, Nov 2, 2023 at 5:32=E2=80=AFAM Sudip Mukherjee (Codethink)
> > <sudipm.mukherjee@gmail.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:670=
7:1: error: the frame size of 2056 bytes is larger than 2048 bytes [-Werror=
=3Dframe-larger-than=3D]
> > >  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/comm=
it/?id=3D089dbf6a06f1dcaeed4f8b86d619e8d28b235207
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/comm=
it/?id=3Db141fa036c901303ca5659cc22e9c08f8b097892
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/comm=
it/?id=3D5b2c54e0d0ea09f7a3b500510731878326e1117e
> > 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.

Should be fixed with Nathan's patch:
https://patchwork.freedesktop.org/patch/565675/

Alex