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Message-ID: <CA+G9fYuSWodh1teau4jGG_P15yT-ev1+bS7HAAmMu5D5J-d2vw@mail.gmail.com>
Date:   Tue, 7 Feb 2023 13:27:05 +0530
From:   Naresh Kamboju <naresh.kamboju@...aro.org>
To:     llvm@...ts.linux.dev, open list <linux-kernel@...r.kernel.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        lkft-triage@...ts.linaro.org
Cc:     borislav.petkov@....com, "H. Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Nathan Chancellor <nathan@...nel.org>
Subject: x86/include/asm/arch_hweight.h:49:15: error: invalid input size for
 constraint 'D'

Following Build regressions warnings / errors noticed on Linux next-20230207.

Regressions found on x86_64:

    - build/clang-15-lkftconfig-compat
    - build/clang-nightly-lkftconfig
    - build/clang-15-lkftconfig
    - build/clang-15-lkftconfig-kcsan
    - build/clang-lkftconfig

In file included from arch/x86/entry/vdso/vdso32/vgetcpu.c:2:
In file included from arch/x86/entry/vdso/vdso32/../vgetcpu.c:8:
In file included from include/linux/kernel.h:22:
In file included from include/linux/bitops.h:68:
In file included from arch/x86/include/asm/bitops.h:420:
arch/x86/include/asm/arch_hweight.h:49:15: error: invalid input size
for constraint 'D'
                         : REG_IN (w));
                                   ^
In file included from arch/x86/entry/vdso/vdso32/vgetcpu.c:2:
In file included from arch/x86/entry/vdso/vdso32/../vgetcpu.c:8:
In file included from include/linux/kernel.h:25:
In file included from include/linux/math.h:6:
arch/x86/include/asm/div64.h:85:34: error: invalid output size for
constraint '=a'
        asm ("mulq %2; divq %3" : "=a" (q)
                                        ^
2 errors generated.

Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>

Following config diff found.
 + CONFIG_COMPAT_WARN_32BIT_FILESYSTEM_ACCESS=y

Build details link,
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230207/testrun/14611359/suite/build/test/clang-lkftconfig/details/

# To install tuxmake on your system globally:
# sudo pip3 install -U tuxmake
#
# See https://docs.tuxmake.org/ for complete documentation.
# Original tuxmake command with fragments listed below.
tuxmake \
 --runtime podman \
 --target-arch x86_64 \
 --toolchain clang-15 \
 --kconfig defconfig \
 --kconfig-add https://raw.githubusercontent.com/Linaro/meta-lkft/kirkstone/meta/recipes-kernel/linux/files/lkft.config
\
 --kconfig-add https://raw.githubusercontent.com/Linaro/meta-lkft/kirkstone/meta/recipes-kernel/linux/files/lkft-crypto.config
\
 --kconfig-add https://raw.githubusercontent.com/Linaro/meta-lkft/kirkstone/meta/recipes-kernel/linux/files/distro-overrides.config
\
 --kconfig-add https://raw.githubusercontent.com/Linaro/meta-lkft/kirkstone/meta/recipes-kernel/linux/files/systemd.config
\
 --kconfig-add https://raw.githubusercontent.com/Linaro/meta-lkft/kirkstone/meta/recipes-kernel/linux/files/virtio.config
\
 --kconfig-add CONFIG_IGB=y \
 --kconfig-add CONFIG_UNWINDER_FRAME_POINTER=y LLVM=1 LLVM_IAS=1


--
Linaro LKFT
https://lkft.linaro.org

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