# git rev-parse -q --verify 2b42c8057a19768a3f203feee8fe16965ff119b5^{commit}
2b42c8057a19768a3f203feee8fe16965ff119b5
already have revision, skipping fetch
# git checkout -q -f -B kisskb 2b42c8057a19768a3f203feee8fe16965ff119b5
# git clean -qxdf
# < git log -1
# commit 2b42c8057a19768a3f203feee8fe16965ff119b5
# Author: Nathan Lynch <nathanl@linux.ibm.com>
# Date:   Fri Feb 10 12:42:08 2023 -0600
# 
#     powerpc/rtas: arch-wide function token lookup conversions
#     
#     With the tokens for all implemented RTAS functions now available via
#     rtas_function_token(), which is optimal and safe for arbitrary
#     contexts, there is no need to use rtas_token() or cache its result.
#     
#     Most conversions are trivial, but a few are worth describing in more
#     detail:
#     
#     * Error injection token comparisons for lockdown purposes are
#       consolidated into a simple predicate: token_is_restricted_errinjct().
#     
#     * A couple of special cases in block_rtas_call() do not use
#       rtas_token() but perform string comparisons against names in the
#       function table. These are converted to compare against token values
#       instead, which is logically equivalent but less expensive.
#     
#     * The lookup for the ibm,os-term token can be deferred until needed,
#       instead of caching it at boot to avoid device tree traversal during
#       panic.
#     
#     * Since rtas_function_token() accesses a read-only data structure
#       without taking any locks, xmon's lookup of set-indicator can be
#       performed as needed instead of cached at startup.
#     
#     Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20230125-b4-powerpc-rtas-queue-v3-20-26929c8cce78@linux.ibm.com
# < /opt/cross/kisskb/korg/gcc-12.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-12.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 2b42c8057a19768a3f203feee8fe16965ff119b5
# < make -s -j 160 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-gcc12 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-12.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc6xx_defconfig
# < make -s -j 160 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-gcc12 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-12.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 160 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-gcc12 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-12.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 160 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-gcc12 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-12.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
arch/powerpc/kernel/optprobes_head.o: warning: objtool: optprobe_template_end(): can't find starting instruction
Completed OK
# rm -rf /kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-gcc12
# Build took: 0:04:34.742686