# git rev-parse -q --verify 559089e0a93d44280ec3ab478830af319c56dbe3^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify 559089e0a93d44280ec3ab478830af319c56dbe3^{commit}
559089e0a93d44280ec3ab478830af319c56dbe3
# git checkout -q -f -B kisskb 559089e0a93d44280ec3ab478830af319c56dbe3
# git clean -qxdf
# < git log -1
# commit 559089e0a93d44280ec3ab478830af319c56dbe3
# Author: Song Liu <song@kernel.org>
# Date:   Fri Apr 15 09:44:10 2022 -0700
# 
#     vmalloc: replace VM_NO_HUGE_VMAP with VM_ALLOW_HUGE_VMAP
#     
#     Huge page backed vmalloc memory could benefit performance in many cases.
#     However, some users of vmalloc may not be ready to handle huge pages for
#     various reasons: hardware constraints, potential pages split, etc.
#     VM_NO_HUGE_VMAP was introduced to allow vmalloc users to opt-out huge
#     pages.  However, it is not easy to track down all the users that require
#     the opt-out, as the allocation are passed different stacks and may cause
#     issues in different layers.
#     
#     To address this issue, replace VM_NO_HUGE_VMAP with an opt-in flag,
#     VM_ALLOW_HUGE_VMAP, so that users that benefit from huge pages could ask
#     specificially.
#     
#     Also, remove vmalloc_no_huge() and add opt-in helper vmalloc_huge().
#     
#     Fixes: fac54e2bfb5b ("x86/Kconfig: Select HAVE_ARCH_HUGE_VMALLOC with HAVE_ARCH_HUGE_VMAP")
#     Link: https://lore.kernel.org/netdev/14444103-d51b-0fb3-ee63-c3f182f0b546@molgen.mpg.de/"
#     Reviewed-by: Christoph Hellwig <hch@lst.de>
#     Signed-off-by: Song Liu <song@kernel.org>
#     Reviewed-by: Rik van Riel <riel@surriel.com>
#     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 559089e0a93d44280ec3ab478830af319c56dbe3
# < make -s -j 120 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
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# < make -s -j 120 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 120 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 120 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-  
BTF: .tmp_vmlinux.btf: pahole (pahole) is not available
Failed to generate BTF for vmlinux
Try to disable CONFIG_DEBUG_INFO_BTF
make[1]: *** [/kisskb/src/Makefile:1158: vmlinux] Error 1
make: *** [Makefile:219: __sub-make] Error 2
Command 'make -s -j 120 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-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8
# Build took: 0:02:08.646337