From: "Philippe Mathieu-Daudé" <philmd@linaro.org>
To: Nathan Chancellor <nathan@kernel.org>,
masahiroy@kernel.org, ndesaulniers@google.com
Cc: nicolas@fjasle.eu, trix@redhat.com, linux-kbuild@vger.kernel.org,
llvm@lists.linux.dev, kernel test robot <lkp@intel.com>,
tsbogend@alpha.franken.de, linux-mips@vger.kernel.org
Subject: Re: [PATCH 02/14] MIPS: Always use -Wa,-msoft-float and eliminate GAS_HAS_SET_HARDFLOAT
Date: Tue, 10 Jan 2023 08:45:43 +0100 [thread overview]
Message-ID: <cbaa007c-c3d9-d522-b984-b8c11d1efc26@linaro.org> (raw)
In-Reply-To: <20221228-drop-qunused-arguments-v1-2-658cbc8fc592@kernel.org>
On 4/1/23 20:54, Nathan Chancellor wrote:
> -Wa,-msoft-float is tested with as-option, which will be a problem for
> clang with an upcoming change to move as-option to use KBUILD_AFLAGS
> instead of KBUILD_CFLAGS due to a lack of '-mno-abicalls' in
> KBUILD_AFLAGS at the point that this check occurs; $(cflags-y) is added
> to KBUILD_AFLAGS towards the end of this file.
>
> clang: error: ignoring '-fno-PIE' option as it cannot be used with implicit usage of -mabicalls and the N64 ABI [-Werror,-Woption-ignored]
>
> This could be resolved by switching to a cc-option check but
> '$(cflags-y)' would need to be added so that '-mno-abicalls' is present
> for the test. However, this check is no longer necessary, as
> -msoft-float is supported by all supported assembler versions (GNU as
> 2.25+ and LLVM 11+). Eliminate GAS_HAS_SET_HARDFLOAT and all of its
> uses, inlining SET_HARDFLOAT where necessary.
>
> Link: https://lore.kernel.org/202209101939.bvk64Fok-lkp@intel.com/
> Reported-by: kernel test robot <lkp@intel.com>
> Signed-off-by: Nathan Chancellor <nathan@kernel.org>
> ---
> Cc: tsbogend@alpha.franken.de
> Cc: linux-mips@vger.kernel.org
> ---
> arch/mips/Makefile | 11 +---------
> arch/mips/include/asm/asmmacro-32.h | 4 ++--
> arch/mips/include/asm/asmmacro.h | 42 ++++++++++++++++++-------------------
> arch/mips/include/asm/fpregdef.h | 14 -------------
> arch/mips/include/asm/mipsregs.h | 20 ++++--------------
> arch/mips/kernel/genex.S | 2 +-
> arch/mips/kernel/r2300_fpu.S | 4 ++--
> arch/mips/kernel/r4k_fpu.S | 12 +++++------
> arch/mips/kvm/fpu.S | 6 +++---
> 9 files changed, 40 insertions(+), 75 deletions(-)
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
next prev parent reply other threads:[~2023-01-10 7:45 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-04 19:54 [PATCH 00/14] Remove clang's -Qunused-arguments from KBUILD_CPPFLAGS Nathan Chancellor
2023-01-04 19:54 ` [PATCH 01/14] x86/boot/compressed: prefer cc-option for CFLAGS additions Nathan Chancellor
2023-01-04 19:54 ` [PATCH 02/14] MIPS: Always use -Wa,-msoft-float and eliminate GAS_HAS_SET_HARDFLOAT Nathan Chancellor
2023-01-09 21:18 ` Nick Desaulniers
2023-01-10 7:45 ` Philippe Mathieu-Daudé [this message]
2023-01-10 8:30 ` Thomas Bogendoerfer
2023-01-04 19:54 ` [PATCH 03/14] MIPS: Prefer cc-option for additions to cflags Nathan Chancellor
2023-01-09 21:21 ` Nick Desaulniers
2023-01-10 7:42 ` Philippe Mathieu-Daudé
2023-01-10 8:30 ` Thomas Bogendoerfer
2023-01-04 19:54 ` [PATCH 04/14] kbuild: Update assembler calls to use proper flags and language target Nathan Chancellor
2023-01-04 19:54 ` [PATCH 05/14] powerpc: Remove linker flag from KBUILD_AFLAGS Nathan Chancellor
2023-01-09 21:24 ` Nick Desaulniers
2023-01-04 19:54 ` [PATCH 06/14] powerpc/vdso: Remove unused '-s' flag from ASFLAGS Nathan Chancellor
2023-01-09 21:58 ` Nick Desaulniers
2023-01-09 22:15 ` Nathan Chancellor
2023-01-09 22:21 ` Nick Desaulniers
2023-01-09 22:23 ` Segher Boessenkool
2023-01-09 22:37 ` Nathan Chancellor
2023-01-09 22:47 ` Segher Boessenkool
2023-01-09 23:14 ` Nick Desaulniers
2023-01-10 0:51 ` Nathan Chancellor
2023-01-10 11:45 ` Segher Boessenkool
2023-01-10 15:02 ` Nathan Chancellor
[not found] ` <20230109222337.GM25951__25255.3859770828$1673303520$gmane$org@gate.crashing.org>
2023-01-10 0:22 ` Andreas Schwab
2023-01-10 0:43 ` Segher Boessenkool
2023-01-04 19:54 ` [PATCH 07/14] powerpc/vdso: Improve linker flags Nathan Chancellor
2023-01-09 22:08 ` Nick Desaulniers
2023-01-09 22:15 ` Nathan Chancellor
2023-01-04 19:54 ` [PATCH 08/14] powerpc/vdso: Remove an unsupported flag from vgettimeofday-32.o with clang Nathan Chancellor
2023-01-09 22:12 ` Nick Desaulniers
2023-01-09 22:38 ` Nathan Chancellor
2023-01-09 23:16 ` Nick Desaulniers
2023-01-04 19:54 ` [PATCH 09/14] s390/vdso: Drop unused '-s' flag from KBUILD_AFLAGS_64 Nathan Chancellor
2023-01-05 7:27 ` Sven Schnelle
2023-01-04 19:54 ` [PATCH 10/14] s390/vdso: Drop '-shared' from KBUILD_CFLAGS_64 Nathan Chancellor
2023-01-05 7:31 ` Sven Schnelle
2023-01-04 19:54 ` [PATCH 11/14] s390/purgatory: Remove unused '-MD' and unnecessary '-c' flags Nathan Chancellor
2023-01-05 7:33 ` Sven Schnelle
2023-01-04 19:54 ` [PATCH 12/14] drm/amd/display: Do not add '-mhard-float' to dml_ccflags for clang Nathan Chancellor
2023-01-05 14:21 ` Alex Deucher
2023-01-04 19:54 ` [PATCH 13/14] kbuild: Turn a couple more of clang's unused option warnings into errors Nathan Chancellor
2023-01-09 22:15 ` Nick Desaulniers
2023-01-04 19:54 ` [PATCH 14/14] kbuild: Stop using '-Qunused-arguments' with clang Nathan Chancellor
2023-01-09 22:17 ` Nick Desaulniers
2023-01-05 8:00 ` [PATCH 00/14] Remove clang's -Qunused-arguments from KBUILD_CPPFLAGS Heiko Carstens
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