linux-kernel - Re: [PATCH] powerpc: Limit ARCH_HAS_KERNEL_FPU

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Date: Mon, 03 Jun 2024 12:45:11 +1000
From: Michael Ellerman <patch-notifications@...erman.id.au>
To: linuxppc-dev@...ts.ozlabs.org, Samuel Holland <samuel.holland@...ive.com>
Cc: kernel test robot <lkp@...el.com>, Guenter Roeck <linux@...ck-us.net>, Andrew Morton <akpm@...ux-foundation.org>, Christian König <christian.koenig@....com>, Christophe Leroy <christophe.leroy@...roup.eu>, Michael Ellerman <mpe@...erman.id.au>, "Naveen N. Rao" <naveen.n.rao@...ux.ibm.com>, Nicholas Piggin <npiggin@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc: Limit ARCH_HAS_KERNEL_FPU_SUPPORT to PPC64

On Wed, 29 May 2024 09:28:50 -0700, Samuel Holland wrote:
> When building a 32-bit kernel, some toolchains do not allow mixing soft
> float and hard float object files:
> 
>     LD      vmlinux.o
>   powerpc64le-unknown-linux-musl-ld: lib/test_fpu_impl.o uses hard float, arch/powerpc/kernel/udbg.o uses soft float
>   powerpc64le-unknown-linux-musl-ld: failed to merge target specific data of file lib/test_fpu_impl.o
>   make[2]: *** [scripts/Makefile.vmlinux_o:62: vmlinux.o] Error 1
>   make[1]: *** [Makefile:1152: vmlinux_o] Error 2
>   make: *** [Makefile:240: __sub-make] Error 2
> 
> [...]

Applied to powerpc/fixes.

[1/1] powerpc: Limit ARCH_HAS_KERNEL_FPU_SUPPORT to PPC64
      https://git.kernel.org/powerpc/c/be2fc65d66e0406cc9d39d40becaecdf4ee765f3

cheers