# git rev-parse -q --verify 14d7c92f8df9c0964ae6f8b813c1b3ac38120825^{commit}
14d7c92f8df9c0964ae6f8b813c1b3ac38120825
already have revision, skipping fetch
# git checkout -q -f -B kisskb 14d7c92f8df9c0964ae6f8b813c1b3ac38120825
# git clean -qxdf
# < git log -1
# commit 14d7c92f8df9c0964ae6f8b813c1b3ac38120825
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Jun 17 12:57:03 2024 -0700
# 
#     Revert "mm: mmap: allow for the maximum number of bits for randomizing mmap_base by default"
#     
#     This reverts commit 3afb76a66b5559a7b595155803ce23801558a7a9.
#     
#     This was a wrongheaded workaround for an issue that had already been
#     fixed much better by commit 4ef9ad19e176 ("mm: huge_memory: don't force
#     huge page alignment on 32 bit").
#     
#     Asking users questions at kernel compile time that they can't make sense
#     of is not a viable strategy.  And the fact that even the kernel VM
#     maintainers apparently didn't catch that this "fix" is not a fix any
#     more pretty much proves the point that people can't be expected to
#     understand the implications of the question.
#     
#     It may well be the case that we could improve things further, and that
#     __thp_get_unmapped_area() should take the mapping randomization into
#     account even for 64-bit kernels.  Maybe we should not be so eager to use
#     THP mappings.
#     
#     But in no case should this be a kernel config option.
#     
#     Cc: Rafael Aquini <aquini@redhat.com>
#     Cc: Andrew Morton <akpm@linux-foundation.org>
#     Cc: Jiri Slaby <jirislaby@kernel.org>
#     Cc: Suren Baghdasaryan <surenb@google.com>
#     Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /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 14d7c92f8df9c0964ae6f8b813c1b3ac38120825
# make -s -j 160 ARCH=powerpc O=/kisskb/build/linus_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  skiroot_defconfig
# < make -s -j 160 ARCH=powerpc O=/kisskb/build/linus_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 160 ARCH=powerpc O=/kisskb/build/linus_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 160 ARCH=powerpc O=/kisskb/build/linus_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/fs/btrfs/extent_io.c: In function 'extent_fiemap':
/kisskb/src/fs/btrfs/extent_io.c:3285:19: warning: 'last_extent_end' may be used uninitialized in this function [-Wmaybe-uninitialized]
  if (cache.cached && cache.offset + cache.len >= last_extent_end) {
                   ^
/kisskb/src/fs/btrfs/extent_io.c: At top level:
cc1: warning: unrecognized command line option '-Wno-shift-negative-value'
cc1: warning: unrecognized command line option '-Wno-shift-negative-value'
cc1: warning: unrecognized command line option '-Wno-stringop-overflow'
Completed OK
# rm -rf /kisskb/build/linus_skiroot_defconfig_powerpc-gcc5
# Build took: 0:01:10.040240