# git rev-parse -q --verify d799769188529abc6cbf035a10087a51f7832b6b^{commit}
d799769188529abc6cbf035a10087a51f7832b6b
already have revision, skipping fetch
# git checkout -q -f -B kisskb d799769188529abc6cbf035a10087a51f7832b6b
# git clean -qxdf
# < git log -1
# commit d799769188529abc6cbf035a10087a51f7832b6b
# Author: Alexey Kardashevskiy <aik@ozlabs.ru>
# Date:   Wed Mar 9 17:18:22 2022 +1100
# 
#     powerpc/64: Add UADDR64 relocation support
#     
#     When ld detects unaligned relocations, it emits R_PPC64_UADDR64
#     relocations instead of R_PPC64_RELATIVE. Currently R_PPC64_UADDR64 are
#     detected by arch/powerpc/tools/relocs_check.sh and expected not to work.
#     Below is a simple chunk to trigger this behaviour (this disables
#     optimization for the demonstration purposes only, this also happens with
#     -O1/-O2 when CONFIG_PRINTK_INDEX=y, for example):
#     
#       \#pragma GCC push_options
#       \#pragma GCC optimize ("O0")
#       struct entry {
#               const char *file;
#               int line;
#       } __attribute__((packed));
#       static const struct entry e1 = { .file = __FILE__, .line = __LINE__ };
#       static const struct entry e2 = { .file = __FILE__, .line = __LINE__ };
#       ...
#       prom_printf("e1=%s %lx %lx\n", e1.file, (unsigned long) e1.file, mfmsr());
#       prom_printf("e2=%s %lx\n", e2.file, (unsigned long) e2.file);
#       \#pragma GCC pop_options
#     
#     This adds support for UADDR64 for 64bit. This reuses __dynamic_symtab
#     from the 32bit code which supports more relocation types already.
#     
#     Because RELACOUNT includes only R_PPC64_RELATIVE, this replaces it with
#     RELASZ which is the size of all relocation records.
#     
#     Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20220309061822.168173-1-aik@ozlabs.ru
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 d799769188529abc6cbf035a10087a51f7832b6b
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next_skiroot_defconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  skiroot_defconfig
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next_skiroot_defconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next_skiroot_defconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next_skiroot_defconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
Completed OK
# rm -rf /kisskb/build/powerpc-next_skiroot_defconfig_powerpc-gcc11
# Build took: 0:01:35.408800