# git rev-parse -q --verify 5c279c4cf206e03995e04fd3404fa95ffd243a97^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify 5c279c4cf206e03995e04fd3404fa95ffd243a97^{commit}
5c279c4cf206e03995e04fd3404fa95ffd243a97
# git checkout -q -f -B kisskb 5c279c4cf206e03995e04fd3404fa95ffd243a97
# git clean -qxdf
# < git log -1
# commit 5c279c4cf206e03995e04fd3404fa95ffd243a97
# Author: Mike Rapoport <rppt@linux.ibm.com>
# Date:   Thu Feb 4 20:12:37 2021 +0200
# 
#     Revert "x86/setup: don't remove E820_TYPE_RAM for pfn 0"
#     
#     This reverts commit bde9cfa3afe4324ec251e4af80ebf9b7afaf7afe.
#     
#     Changing the first memory page type from E820_TYPE_RESERVED to
#     E820_TYPE_RAM makes it a part of "System RAM" resource rather than a
#     reserved resource and this in turn causes devmem_is_allowed() to treat
#     is as area that can be accessed but it is filled with zeroes instead of
#     the actual data as previously.
#     
#     The change in /dev/mem output causes lilo to fail as was reported at
#     slakware users forum, and probably other legacy applications will
#     experience similar problems.
#     
#     Link: https://www.linuxquestions.org/questions/slackware-14/slackware-current-lilo-vesa-warnings-after-recent-updates-4175689617/#post6214439
#     Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
#     Cc: stable@kernel.org
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 5c279c4cf206e03995e04fd3404fa95ffd243a97
# < make -s -j 24 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  randconfig
KCONFIG_SEED=0xE1423864
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# < make -s -j 24 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 24 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
# make -s -j 24 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  
Completed OK
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8
# Build took: 0:09:02.875670