# git rev-parse -q --verify b50694381cfc22dce3a60a291cdae294a5e5777c^{commit}
b50694381cfc22dce3a60a291cdae294a5e5777c
already have revision, skipping fetch
# git checkout -q -f -B kisskb b50694381cfc22dce3a60a291cdae294a5e5777c
# git clean -qxdf
# < git log -1
# commit b50694381cfc22dce3a60a291cdae294a5e5777c
# Merge: 34b48b8 4855c92
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Thu May 24 14:42:43 2018 -0700
# 
#     Merge branch 'stable/for-linus-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb
#     
#     Pull swiotlb fix from Konrad Rzeszutek Wilk:
#      "One single fix in here: under Xen the DMA32 heap (in the hypervisor)
#       would end up looking like swiss cheese.
#     
#       The reason being that for every coherent DMA allocation we didn't do
#       the proper hypercall to tell Xen to return the page back to the DMA32
#       heap. End result was (eventually) no DMA32 space if you (for example)
#       continously unloaded and loaded modules"
#     
#     * 'stable/for-linus-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
#       xen-swiotlb: fix the check condition for xen_swiotlb_free_coherent
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-gcc --version
# < git log --format=%s --max-count=1 b50694381cfc22dce3a60a291cdae294a5e5777c
# < make -s -j 8 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 8 ARCH=sparc64 O=/kisskb/build/linus_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  
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: 0:01:34.087642