Le 18/04/2021 à 19:15, Randy Dunlap a écrit :

On 4/18/21 3:43 AM, Christophe Leroy wrote:

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Le 18/04/2021 à 02:02, Randy Dunlap a écrit :

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HI--

I no longer see this build error.

Fixed by https://github.com/torvalds/linux/commit/acdad8fb4a1574323db88f98a38b630691574e16

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However:

On 2/27/21 2:24 AM, kernel test robot wrote:

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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:

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compiler: powerpc-linux-gcc (GCC) 9.3.0

...

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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/a74fce4dfc9fa32da6ce3470bbedcecf795de1ec.1591189069.git.christophe.leroy@csgroup.eu/ ?

Hi Christophe,

I get build errors for both LZO and LZMA:

Ok, the patch is almost 1 year old, I guess there has been changes that break it. Will see if I can 
find some time to look at it.

Christophe