Le 03/02/2023 à 18:58, Pali Rohár a écrit : > On Wednesday 01 February 2023 09:29:45 Nick Desaulniers wrote: >> On Wed, Feb 1, 2023 at 3:41 AM Christophe Leroy >> <christophe.le...@csgroup.eu> wrote: >>> >>> >>> >>> Le 01/02/2023 à 12:31, Naresh Kamboju a écrit : >>>> Following build regression started from next-20230131. >>>> >>>> Regressions found on powerpc: >>>> >>>> build/clang-nightly-tqm8xx_defconfig >>>> build/clang-nightly-ppc64e_defconfig >>>> >>>> >>>> make --silent --keep-going --jobs=8 >>>> O=/home/tuxbuild/.cache/tuxmake/builds/1/build ARCH=powerpc >>>> CROSS_COMPILE=powerpc64le-linux-gnu- HOSTCC=clang CC=clang LLVM=1 >>>> LLVM_IAS=0 tqm8xx_defconfig >>>> make --silent --keep-going --jobs=8 >>>> O=/home/tuxbuild/.cache/tuxmake/builds/1/build ARCH=powerpc >>>> CROSS_COMPILE=powerpc64le-linux-gnu- HOSTCC=clang CC=clang LLVM=1 >>>> LLVM_IAS=0 >>>> >>>> error: unknown target CPU '860' >>>> note: valid target CPU values are: generic, 440, 450, 601, 602, 603, 603e, >>>> 603ev, 604, 604e, 620, 630, g3, 7400, g4, 7450, g4+, 750, 8548, 970, g5, >>>> a2, e500, e500mc, e5500, power3, pwr3, power4, pwr4, power5, pwr5, >>>> power5x, pwr5x, power6, pwr6, power6x, pwr6x, power7, pwr7, power8, pwr8, >>>> power9, pwr9, power10, pwr10, powerpc, ppc, ppc32, powerpc64, ppc64, >>>> powerpc64le, ppc64le, future >>>> make[2]: *** [/builds/linux/scripts/Makefile.build:114: >>>> scripts/mod/devicetable-offsets.s] Error 1 >>>> error: unknown target CPU '860' >>>> note: valid target CPU values are: generic, 440, 450, 601, 602, 603, 603e, >>>> 603ev, 604, 604e, 620, 630, g3, 7400, g4, 7450, g4+, 750, 8548, 970, g5, >>>> a2, e500, e500mc, e5500, power3, pwr3, power4, pwr4, power5, pwr5, >>>> power5x, pwr5x, power6, pwr6, power6x, pwr6x, power7, pwr7, power8, pwr8, >>>> power9, pwr9, power10, pwr10, powerpc, ppc, ppc32, powerpc64, ppc64, >>>> powerpc64le, ppc64le, future >>>> make[2]: *** [/builds/linux/scripts/Makefile.build:252: >>>> scripts/mod/empty.o] Error 1 >>> >>> >>> On GCC, the possible values are: >>> >>> ppc-linux-gcc: note : valid arguments to ‘-mcpu=’ are: 401 403 405 405fp >>> 440 440fp 464 464fp 476 476fp 505 601 602 603 603e 604 604e 620 630 740 >>> 7400 7450 750 801 821 823 8540 8548 860 970 G3 G4 G5 a2 cell e300c2 >>> e300c3 e500mc e500mc64 e5500 e6500 ec603e native power3 power4 power5 >>> power5+ power6 power6x power7 power8 powerpc powerpc64 powerpc64le rs64 >>> titan >>> >>> How do you tell CLANG that you are building for powerpc 8xx ? > > Maybe llvm does not have support for this old CPU core at all? Because > from 'note: valid target CPU values are:' message it looks like that.
By the way I submitted a patch to opt out of CLANG until we clarify the situation, see https://patchwork.ozlabs.org/project/linuxppc-dev/patch/e62892e32c14a7a5738c597e39e0082cb0abf21c.1675335659.git.christophe.le...@csgroup.eu/ Christophe > >> + Nemanjai, Qiongsi, >> >> >>> >>>> >>>> >>>> Reported-by: Linux Kernel Functional Testing <l...@linaro.org> >>>> >>>> https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230201/testrun/14479384/suite/build/test/clang-nightly-tqm8xx_defconfig/history/ >>>> >>>> The bisection pointed to this commit, >>>> 45f7091aac35 ("powerpc/64: Set default CPU in Kconfig") >>>> >>>> -- >>>> Linaro LKFT >>>> https://lkft.linaro.org >> >> >> >> -- >> Thanks, >> ~Nick Desaulniers
