# git rev-parse -q --verify 3fed6ae4b027f9c93be18520f87bd06bdffd196b^{commit}
3fed6ae4b027f9c93be18520f87bd06bdffd196b
already have revision, skipping fetch
# git checkout -q -f -B kisskb 3fed6ae4b027f9c93be18520f87bd06bdffd196b
# git clean -qxdf
# < git log -1
# commit 3fed6ae4b027f9c93be18520f87bd06bdffd196b
# Author: Christoph Hellwig <hch@lst.de>
# Date:   Fri Jan 4 13:03:08 2019 -0800
# 
#     ia64: fix compile without swiotlb
#     
#     Some non-generic ia64 configs don't build swiotlb, and thus should not
#     pull in the generic non-coherent DMA infrastructure.
#     
#     Fixes: 68c608345c ("swiotlb: remove dma_mark_clean")
#     Reported-by: Tony Luck <tony.luck@gmail.com>
#     Signed-off-by: Christoph Hellwig <hch@lst.de>
#     Signed-off-by: Tony Luck <tony.luck@intel.com>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 3fed6ae4b027f9c93be18520f87bd06bdffd196b
# < make -s -j 120 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  x86_64_defconfig
# make -s -j 120 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  
You are building kernel with non-retpoline compiler.
Please update your compiler.
make[1]: *** [arch/x86/Makefile:300: checkbin] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:152: sub-make] Error 2
Command 'make -s -j 120 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_x86_64_defconfig_x86_64
# Build took: 0:00:03.465363