[kbuild-all] Re: mmu.c:undefined reference to `patch__hash_page_A0'

On 4/18/21 3:43 AM, Christophe Leroy wrote: > > > Le 18/04/2021 à 02:02, Randy Dunlap a écrit : >> HI-- >> >> I no longer see this build error. > > Fixed by https://github.com/torvalds/linux/commit/acdad8fb4a1574323db88f98a38b6306... > >> However: >> >> On 2/27/21 2:24 AM, kernel test robot wrote: >>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master >>> head:   3fb6d0e00efc958d01c2f109c8453033a2d96796 >>> commit: 259149cf7c3c6195e6199e045ca988c31d081cab powerpc/32s: Only build hash code when CONFIG_PPC_BOOK3S_604 is selected >>> date:   4 weeks ago >>> config: powerpc64-randconfig-r013-20210227 (attached as .config) >> >> ktr/lkp, this is a PPC32 .config file that is attached, not PPC64. >> >> Also: >> >>> compiler: powerpc-linux-gcc (GCC) 9.3.0 > > ... > >> >> I do see this build error: >> >> powerpc-linux-ld: arch/powerpc/boot/wrapper.a(decompress.o): in function `partial_decompress': >> decompress.c:(.text+0x1f0): undefined reference to `__decompress' >> >> when either >> CONFIG_KERNEL_LZO=y >> or >> CONFIG_KERNEL_LZMA=y >> >> but the build succeeds when either >> CONFIG_KERNEL_GZIP=y >> or >> CONFIG_KERNEL_XZ=y >> >> I guess that is due to arch/powerpc/boot/decompress.c doing this: >> >> #ifdef CONFIG_KERNEL_GZIP >> #    include "decompress_inflate.c" >> #endif >> >> #ifdef CONFIG_KERNEL_XZ >> #    include "xz_config.h" >> #    include "../../../lib/decompress_unxz.c" >> #endif >> >> >> It would be nice to require one of KERNEL_GZIP or KERNEL_XZ >> to be set/enabled (maybe unless a uImage is being built?). > > > Can you test by https://patchwork.ozlabs.org/project/linuxppc-dev/patch/a74fce4dfc9fa32da... ? Hi Christophe, I get build errors for both LZO and LZMA: