# git rev-parse -q --verify 48c2f82317526c565c369bc7161ddfd67f202847^{commit} # git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/chleroy-linux.git includes # git rev-parse -q --verify 48c2f82317526c565c369bc7161ddfd67f202847^{commit} 48c2f82317526c565c369bc7161ddfd67f202847 # git checkout -q -f -B kisskb 48c2f82317526c565c369bc7161ddfd67f202847 # git clean -qxdf # < git log -1 # commit 48c2f82317526c565c369bc7161ddfd67f202847 # Author: Christophe Leroy # 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 # Cc: Michael Ellerman # Cc: Benjamin Herrenschmidt # Cc: Paul Mackerras # < /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 48c2f82317526c565c369bc7161ddfd67f202847 # < make -s -j 48 ARCH=powerpc O=/kisskb/build/chleroy_pmac32_defconfig+kexec_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- pmac32_defconfig # Added to kconfig configs/2006/11/29/pmac32_defconfigkexec # < make -s -j 48 ARCH=powerpc O=/kisskb/build/chleroy_pmac32_defconfig+kexec_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 48 ARCH=powerpc O=/kisskb/build/chleroy_pmac32_defconfig+kexec_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig .config:4287:warning: unexpected data: configs/2006/11/29/pmac32_defconfigkexec # make -s -j 48 ARCH=powerpc O=/kisskb/build/chleroy_pmac32_defconfig+kexec_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- Completed OK # rm -rf /kisskb/build/chleroy_pmac32_defconfig+kexec_powerpc-gcc5 # Build took: 0:02:15.343244