ci_not...@linaro.org writes:

> In CI config tcwg_kernel/gnu-master-arm-next-allyesconfig after:
>
>   | commit v6.9-rc2-36-gfc4216add64ee
>   | Author: Samuel Holland <samuel.holl...@sifive.com>
>   | Date:   Fri Mar 29 00:18:28 2024 -0700
>   |
>   |     drm/amd/display: use ARCH_HAS_KERNEL_FPU_SUPPORT
>   |
>   |     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.
>   |
>   | ... 21 lines of the commit log omitted.
>
> Results changed to
> # reset_artifacts:
> -10
> # build_abe binutils:
> -9
> # build_abe stage1:
> -5
> # build_abe qemu:
> -2
> # linux_n_obj:
> 22511
>
> From
> # reset_artifacts:
> -10
> # build_abe binutils:
> -9
> # build_abe stage1:
> -5
> # build_abe qemu:
> -2
> # linux_n_obj:
> 22321
> # linux build successful:
> all

This problem still reproduces on next-20240410, so I reported it to the
patch author. He responded here:

https://lore.kernel.org/linux-arm-kernel/75a37a4b-f516-40a3-b6b5-4aa1636f9...@sifive.com/

mentioning that it's a shortcoming of GCC on arm:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91970

Though Andrew Pinski has just disagreed with that assessment.

--
Thiago
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