# 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/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-gcc --version
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-ld --version
# < git log --format=%s --max-count=1 3fed6ae4b027f9c93be18520f87bd06bdffd196b
# < make -s -j 48 ARCH=sparc64 O=/kisskb/build/linus_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  defconfig
# make -s -j 48 ARCH=sparc64 O=/kisskb/build/linus_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  
<stdin>:1336:2: warning: #warning syscall rseq not implemented [-Wcpp]
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
  kernel: arch/sparc/boot/image is ready
  kernel: arch/sparc/boot/zImage is ready
Completed OK
# rm -rf /kisskb/build/linus_sparc64-defconfig_sparc64
# Build took: 0:01:03.080328