microwatt_defconfig broken: fined reference to `hash__tlb_flush'

[Jan-Benedict Glaw]

Hi!

On Fri, 2023-02-17 19:44:27 +0000, Christophe Leroy <christophe.leroy at csgroup.eu> wrote:
> Le 17/02/2023 à 18:14, Jan-Benedict Glaw a écrit :
> > My CI builds showed that the microwatt_defconfig broke somewhere between
> > (upstream Linus) 6d796c50f84ca79f1722bb131799e5a5710c4700 (last known good, log
> > at [1]) and 033c40a89f55525139fd5b6342281b09b97d05bf (first known bad, log at
> > [2]) with this:
> > 
> > [...]
> > make V=1 ARCH=powerpc CROSS_COMPILE=powerpc64le-linux- INSTALL_MOD_PATH=/var/lib/laminar/run/linux-powerpc-microwatt_defconfig/28/linux-powerpc-microwatt_defconfig INSTALL_DTBS_PATH=/var/lib/laminar/run/linux-powerpc-microwatt_defconfig/28/linux-powerpc-microwatt_defconfig all
> > [...]
> > [mk all 2023-02-17 01:42:27] + powerpc64le-linux-ld -EL -z noexecstack --no-warn-rwx-segments -Bstatic --build-id=sha1 --orphan-handling=warn --script=./arch/powerpc/kernel/vmlinux.lds --strip-debug -o .tmp_vmlinux.kallsyms1 --whole-archive vmlinux.a init/version-timestamp.o --no-whole-archive --start-group lib/lib.a --end-group
> > [mk all 2023-02-17 01:42:28] powerpc64le-linux-ld: mm/memory.o: in function `tlb_flush_mmu_tlbonly':
> > [mk all 2023-02-17 01:42:28] memory.c:(.text+0x320): undefined reference to `hash__tlb_flush'
> > [mk all 2023-02-17 01:42:28] powerpc64le-linux-ld: mm/mmu_gather.o: in function `tlb_flush_mmu_tlbonly':
> > [mk all 2023-02-17 01:42:28] mmu_gather.c:(.text+0xe0): undefined reference to `hash__tlb_flush'
> > [mk all 2023-02-17 01:42:28] powerpc64le-linux-ld: mm/mprotect.o: in function `change_protection':
> > [mk all 2023-02-17 01:42:28] mprotect.c:(.text+0x59c): undefined reference to `hash__tlb_flush'
> > [mk all 2023-02-17 01:42:28] powerpc64le-linux-ld: mm/madvise.o: in function `tlb_end_vma.isra.0':
> > [mk all 2023-02-17 01:42:28] madvise.c:(.text+0x1f0): undefined reference to `hash__tlb_flush'
> > [mk all 2023-02-17 01:42:28] make[1]: *** [scripts/Makefile.vmlinux:35: vmlinux] Error 1
> > [mk all 2023-02-17 01:42:28] make: *** [Makefile:1264: vmlinux] Error 2
> 
> The fix is available here : 
> https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id=4302abc628fc0dc08e5855f21bbfaed407a72bc3

...and in the meantime, it showed up in Linus's tree and resulted in a
successful build:

	http://toolchain.lug-owl.de/laminar/jobs/linux-powerpc-microwatt_defconfig/71

Thanks,
  Jan-Benedict

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