Re: [PATCH v4 13/15] drm/amd/display: Use ARCH_HAS_KERNEL_FPU_SUPPORT

[Guenter Roeck]

Hi,

On Fri, Mar 29, 2024 at 12:18:28AM -0700, Samuel Holland wrote:
> Now that all previously-supported architectures select
> ARCH_HAS_KERNEL_FPU_SUPPORT, this code can depend on that symbol instead
> of the existing list of architectures. It can also take advantage of the
> common kernel-mode FPU API and method of adjusting CFLAGS.
> 
> Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
> Reviewed-by: Christoph Hellwig <hch@xxxxxx>
> Signed-off-by: Samuel Holland <samuel.holland@xxxxxxxxxx>

With this patch in the mainline kernel, I get the following build error
when trying to build powerpc:ppc32_allmodconfig.

powerpc64-linux-ld: drivers/gpu/drm/amd/amdgpu/../display/dc/dml/display_mode_lib.o uses hard float, drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_helpers.o uses soft float
powerpc64-linux-ld: failed to merge target specific data of file drivers/gpu/drm/amd/amdgpu/../display/dc/dml/display_mode_lib.o

[ repeated many times ]

The problem is no longer seen after reverting this patch.

Guenter