# git rev-parse -q --verify 0e7991d4acafa88d5771c0227971996c00a55325^{commit}
0e7991d4acafa88d5771c0227971996c00a55325
already have revision, skipping fetch
# git checkout -q -f -B kisskb 0e7991d4acafa88d5771c0227971996c00a55325
# git clean -qxdf
# < git log -1
# commit 0e7991d4acafa88d5771c0227971996c00a55325
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Fri Sep 2 21:22:50 2022 +1000
# 
#     powerpc/mm/64s: Drop p4d_leaf()
#     
#     Because 64-bit Book3S uses pgtable-nop4d.h, the P4D is folded into the
#     PGD. So P4D entries are actually PGD entries, or vice versa.
#     
#     The other way to think of it is that the P4D is a single entry page
#     table below the PGD. Zero bits of the address are needed to index into
#     the P4D, therefore a P4D entry maps the same size address space as a PGD
#     entry.
#     
#     As explained in the previous commit, there are no huge page sizes
#     supported directly at the PGD level on 64-bit Book3S, so there are also
#     no huge page sizes supported at the P4D level.
#     
#     Therefore p4d_is_leaf() can never be true, so drop the definition and
#     fallback to the default implementation that always returns false.
#     
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 0e7991d4acafa88d5771c0227971996c00a55325
# < make -s -j 32 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/aarch64-linux/bin/aarch64-linux-  defconfig
# < make -s -j 32 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 32 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
# make -s -j 32 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/aarch64-linux/bin/aarch64-linux-  
Completed OK
# rm -rf /kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5
# Build took: 0:07:25.457927