# git rev-parse -q --verify f9346b739bcf2de0fad889708cdece04bacbc604^{commit}
f9346b739bcf2de0fad889708cdece04bacbc604
already have revision, skipping fetch
# git checkout -q -f -B kisskb f9346b739bcf2de0fad889708cdece04bacbc604
# git clean -qxdf
# < git log -1
# commit f9346b739bcf2de0fad889708cdece04bacbc604
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Thu Aug 1 16:44:02 2019 +1000
# 
#     selftests/powerpc: Fix build failures with GCC 9
#     
#     GCC 9 fails to build some of the ptrace TM tests, with errors such as:
#     
#       ptrace-tm-spd-vsx.c: In function 'tm_spd_vsx':
#       ptrace-tm-spd-vsx.c:51:2: error: listing the stack pointer register 'r1' in a clobber list is deprecated [-Werror=deprecated]
#          51 |  asm __volatile__(
#             |  ^~~
#       ptrace-tm-spd-vsx.c:51:2: note: the value of the stack pointer after an 'asm' statement must be the same as it was before the statement
#     
#     Which is probably fair enough.
#     
#     Some of these inline asm blocks are doing quite a lot and are probably
#     pushing the boundaries of what's sane to do with inline asm, but they
#     shouldn't actually be returning with r1 modified.
#     
#     So drop r1 from the clobbers for now, we should probably rewrite them
#     to be real asm functions at some point.
#     
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 f9346b739bcf2de0fad889708cdece04bacbc604
# < make -s -j 80 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  x86_64_defconfig
# make -s -j 80 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  
drivers/gpu/drm/i915/gem/i915_gem_execbuffer.o: warning: objtool: .altinstr_replacement+0x3c: redundant UACCESS disable
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64-gcc8
# Build took: 0:02:12.376584