# git gc
# git rev-parse -q --verify 925cf0457d7e62ce08878ffb789189ac08ca8677^{commit}
925cf0457d7e62ce08878ffb789189ac08ca8677
already have revision, skipping fetch
# git checkout -q -f -B kisskb 925cf0457d7e62ce08878ffb789189ac08ca8677
# git clean -qxdf
# < git log -1
# commit 925cf0457d7e62ce08878ffb789189ac08ca8677
# Merge: 0097c18e459c f9f57da2c2d1
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Feb 18 17:57:16 2023 -0800
# 
#     Merge tag 'x86-urgent-2023-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull x86 fix from Thomas Gleixner:
#      "A single fix for x86.
#     
#       Revert the recent change to the MTRR code which aimed to support
#       SEV-SNP guests on Hyper-V. It caused a regression on XEN Dom0 kernels.
#     
#       The underlying issue of MTTR (mis)handling in the x86 code needs some
#       deeper investigation and is definitely not 6.2 material"
#     
#     * tag 'x86-urgent-2023-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       x86/mtrr: Revert 90b926e68f50 ("x86/pat: Fix pat_x_mtrr_type() for MTRR disabled case")
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 925cf0457d7e62ce08878ffb789189ac08ca8677
# < make -s -j 120 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 defconfig
# < make -s -j 120 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 help
# make -s -j 120 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 olddefconfig
# make -s -j 120 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 
/kisskb/src/arch/um/os-Linux/util.c:17:24: fatal error: sys/random.h: No such file or directory
compilation terminated.
make[3]: *** [/kisskb/src/scripts/Makefile.build:252: arch/um/os-Linux/util.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:504: arch/um/os-Linux] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:2021: .] Error 2
make: *** [Makefile:242: __sub-make] Error 2
Command 'make -s -j 120 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_um-defconfig_um-x86_64
# Build took: 0:03:31.212627