# git rev-parse -q --verify 85c2be2f166e5fc421396c9545c7411b2bbb8543^{commit}
85c2be2f166e5fc421396c9545c7411b2bbb8543
already have revision, skipping fetch
# git checkout -q -f -B kisskb 85c2be2f166e5fc421396c9545c7411b2bbb8543
# git clean -qxdf
# < git log -1
# commit 85c2be2f166e5fc421396c9545c7411b2bbb8543
# Author: Christophe Leroy <christophe.leroy@csgroup.eu>
# Date:   Sun Jan 23 16:50:07 2022 +0100
# 
#     powerpc: Select ARCH_WANTS_MODULES_DATA_IN_VMALLOC on book3s/32 and 8xx
#     
#     book3s/32 and 8xx have a separate area for allocating modules,
#     defined by MODULES_VADDR / MODULES_END.
#     
#     On book3s/32, it is not possible to protect against execution
#     on a page basis. A full 256M segment is either Exec or NoExec.
#     The module area is in an Exec segment while vmalloc area is
#     in a NoExec segment.
#     
#     In order to protect module data against execution, select
#     ARCH_WANTS_MODULES_DATA_IN_VMALLOC.
#     
#     For the 8xx (and possibly other 32 bits platform in the future),
#     there is no such constraint on Exec/NoExec protection, however
#     there is a critical distance between kernel functions and callers
#     that needs to remain below 32Mbytes in order to avoid costly
#     trampolines. By allocating data outside of module area, we
#     increase the chance for module text to remain within acceptable
#     distance from kernel core text.
#     
#     So select ARCH_WANTS_MODULES_DATA_IN_VMALLOC for 8xx as well.
#     
#     Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
#     Cc: Michael Ellerman <mpe@ellerman.id.au>
#     Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
#     Cc: Paul Mackerras <paulus@samba.org>
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 85c2be2f166e5fc421396c9545c7411b2bbb8543
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/chleroy_85xx_socrates_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  85xx/socrates_defconfig
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/chleroy_85xx_socrates_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 120 ARCH=powerpc O=/kisskb/build/chleroy_85xx_socrates_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 120 ARCH=powerpc O=/kisskb/build/chleroy_85xx_socrates_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/kernel/module/main.c: In function 'load_module':
/kisskb/src/kernel/module/main.c:3425:2: error: implicit declaration of function 'init_build_id' [-Werror=implicit-function-declaration]
  init_build_id(mod, info);
  ^
In file included from /kisskb/src/kernel/module/strict_rwx.c:12:0:
/kisskb/src/kernel/module/internal.h:145:13: warning: 'mod_tree_insert' defined but not used [-Wunused-function]
 static void mod_tree_insert(struct module *mod) { }
             ^
/kisskb/src/kernel/module/internal.h:146:13: warning: 'mod_tree_remove_init' defined but not used [-Wunused-function]
 static void mod_tree_remove_init(struct module *mod) { }
             ^
/kisskb/src/kernel/module/internal.h:147:13: warning: 'mod_tree_remove' defined but not used [-Wunused-function]
 static void mod_tree_remove(struct module *mod) { }
             ^
In file included from /kisskb/src/kernel/module/procfs.c:13:0:
/kisskb/src/kernel/module/internal.h:145:13: warning: 'mod_tree_insert' defined but not used [-Wunused-function]
 static void mod_tree_insert(struct module *mod) { }
             ^
/kisskb/src/kernel/module/internal.h:146:13: warning: 'mod_tree_remove_init' defined but not used [-Wunused-function]
 static void mod_tree_remove_init(struct module *mod) { }
             ^
/kisskb/src/kernel/module/internal.h:147:13: warning: 'mod_tree_remove' defined but not used [-Wunused-function]
 static void mod_tree_remove(struct module *mod) { }
             ^
cc1: some warnings being treated as errors
make[3]: *** [/kisskb/src/scripts/Makefile.build:288: kernel/module/main.o] Error 1
make[2]: *** [/kisskb/src/scripts/Makefile.build:550: kernel/module] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:1831: kernel] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:219: __sub-make] Error 2
Command 'make -s -j 120 ARCH=powerpc O=/kisskb/build/chleroy_85xx_socrates_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/chleroy_85xx_socrates_defconfig_powerpc-gcc5
# Build took: 0:00:20.450443