linux-kernel - Re: [masahiroy:fixes 6/6] arch/mips/kernel/branch.c:712:20: error: instruction requires a CPU feature not currently enabled

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Message-ID: <CAK7LNASbcsLqUU+WsO7zQ-toucvkd1ePGX_HW7ehrywoS-cUMQ@mail.gmail.com>
Date:   Sun, 11 Sep 2022 21:21:16 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     clang-built-linux <llvm@...ts.linux.dev>, kbuild-all@...ts.01.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        kernel test robot <lkp@...el.com>,
        linux-mips <linux-mips@...r.kernel.org>
Subject: Re: [masahiroy:fixes 6/6] arch/mips/kernel/branch.c:712:20: error:
 instruction requires a CPU feature not currently enabled

On Sun, Sep 11, 2022 at 2:56 PM Nick Desaulniers
<ndesaulniers@...gle.com> wrote:
>
> On Sat, Sep 10, 2022 at 12:24 PM kernel test robot <lkp@...el.com> wrote:
> >
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git fixes
> > head:   97f72ed7a6b5a6bbac628f1f6e91cf06d1ea2cb5
> > commit: 97f72ed7a6b5a6bbac628f1f6e91cf06d1ea2cb5 [6/6] Makefile.compiler: Use KBUILD_AFLAGS for as-option
> > config: mips-loongson2k_defconfig (https://download.01.org/0day-ci/archive/20220910/202209101939.bvk64Fok-lkp@intel.com/config)
>
> This is likely:
> arch/mips/loongson2ef/Platform
> 28:cflags-$(CONFIG_CPU_LOONGSON2EF)     += $(call
> as-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
> arch/mips/Makefile
> 155:cflags-y += $(call as-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
>
> probably both need to use cc-option similar to
> https://lore.kernel.org/llvm/20220907045907.484043-2-ndesaulniers@google.com/
>
> Masahiro, I'm at Linux Plumbers Conf; not sure when I can get to a
> formal patch.  Want to drop my 2 patches and I'll send a v4 at some
> point?



OK, dropped.

Thanks.






-- 
Best Regards
Masahiro Yamada