# git rev-parse -q --verify ccfff0a2bd2a30de130b5623d242ddecd0272bc2^{commit}
ccfff0a2bd2a30de130b5623d242ddecd0272bc2
already have revision, skipping fetch
# git checkout -q -f -B kisskb ccfff0a2bd2a30de130b5623d242ddecd0272bc2
# git clean -qxdf
# < git log -1
# commit ccfff0a2bd2a30de130b5623d242ddecd0272bc2
# Merge: 3ad7befd4842 61082ad6a6e1
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Nov 13 13:14:05 2021 -0800
# 
#     Merge tag 'virtio-mem-for-5.16' of git://github.com/davidhildenbrand/linux
#     
#     Pull virtio-mem update from David Hildenbrand:
#      "Support the VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE feature in virtio-mem,
#       now that "accidential" access to logically unplugged memory inside
#       added Linux memory blocks is no longer possible, because we:
#     
#        - Removed /dev/kmem in commit bbcd53c96071 ("drivers/char: remove
#          /dev/kmem for good")
#     
#        - Disallowed access to virtio-mem device memory via /dev/mem in
#          commit 2128f4e21aa ("virtio-mem: disallow mapping virtio-mem memory
#          via /dev/mem")
#     
#        - Sanitized access to virtio-mem device memory via /proc/kcore in
#          commit 0daa322b8ff9 ("fs/proc/kcore: don't read offline sections,
#          logically offline pages and hwpoisoned pages")
#     
#        - Sanitized access to virtio-mem device memory via /proc/vmcore in
#          commit ce2814622e84 ("virtio-mem: kdump mode to sanitize
#          /proc/vmcore access")
#     
#       The new VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE feature that will be
#       required by some hypervisors implementing virtio-mem in the near
#       future, so let's support it now that we safely can"
#     
#     * tag 'virtio-mem-for-5.16' of git://github.com/davidhildenbrand/linux:
#       virtio-mem: support VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 ccfff0a2bd2a30de130b5623d242ddecd0272bc2
# < make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  randconfig
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# < make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
.config:5511:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
# make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  
Completed OK
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc11
# Build took: 0:05:51.789742