# git rev-parse -q --verify a7aaa2f26bfd932a654706b19859e7adf802bee2^{commit}
a7aaa2f26bfd932a654706b19859e7adf802bee2
already have revision, skipping fetch
# git checkout -q -f -B kisskb a7aaa2f26bfd932a654706b19859e7adf802bee2
# git clean -qxdf
# < git log -1
# commit a7aaa2f26bfd932a654706b19859e7adf802bee2
# Author: Sandipan Das <sandipan@linux.ibm.com>
# Date:   Tue Aug 4 23:01:37 2020 +0530
# 
#     selftests/powerpc: Fix pkey syscall redefinitions
#     
#     On distros using older glibc versions, the pkey tests encounter build
#     failures due to redefinition of the pkey syscall numbers.
#     
#     For compatibility, commit 743f3544fffb added a wrapper for the
#     gettid() syscall and included syscall.h if the version of glibc used
#     is older than 2.30. This leads to different definitions of SYS_pkey_*
#     as the ones in the pkey test header set numeric constants where as the
#     ones from syscall.h reuse __NR_pkey_*. The compiler complains about
#     redefinitions since they are different.
#     
#     This replaces SYS_pkey_* definitions with __NR_pkey_* such that the
#     definitions in both syscall.h and pkeys.h are alike. This way, if
#     syscall.h has to be included for compatibility reasons, builds will
#     still succeed.
#     
#     Fixes: 743f3544fffb ("selftests/powerpc: Add wrapper for gettid")
#     Reported-by: Sachin Sant <sachinp@linux.vnet.ibm.com>
#     Suggested-by: David Laight <david.laight@aculab.com>
#     Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
#     Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/a4956d838bf59b0a71a2553c5ca81131ea8b49b9.1596561758.git.sandipan@linux.ibm.com
# < /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 a7aaa2f26bfd932a654706b19859e7adf802bee2
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_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 80 ARCH=powerpc O=/kisskb/build/powerpc-next_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 80 ARCH=powerpc O=/kisskb/build/powerpc-next_pmac32_defconfig+kexec_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
.config:4105:warning: unexpected data: configs/2006/11/29/pmac32_defconfigkexec
# make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_pmac32_defconfig+kexec_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0x8dd188) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x900000)
Completed OK
# rm -rf /kisskb/build/powerpc-next_pmac32_defconfig+kexec_powerpc-gcc5
# Build took: 0:01:43.570786