# git rev-parse -q --verify 66c56cfa64d9dbb9efa8a06c1aece77e8d57ea19^{commit}
66c56cfa64d9dbb9efa8a06c1aece77e8d57ea19
already have revision, skipping fetch
# git checkout -q -f -B kisskb 66c56cfa64d9dbb9efa8a06c1aece77e8d57ea19
# git clean -qxdf
# < git log -1
# commit 66c56cfa64d9dbb9efa8a06c1aece77e8d57ea19
# Merge: 473348891c36 dfd32cad146e
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Jan 12 10:52:40 2019 -0800
# 
#     Merge tag 'remove-dma_zalloc_coherent-5.0' of git://git.infradead.org/users/hch/dma-mapping
#     
#     Pull dma_zalloc_coherent() removal from Christoph Hellwig:
#      "We've always had a weird situation around dma_zalloc_coherent. To
#       safely support mapping the allocations to userspace major
#       architectures like x86 and arm have always zeroed allocations from
#       dma_alloc_coherent, but a couple other architectures were missing that
#       zeroing either always or in corner cases.
#     
#       Then later we grew anothe dma_zalloc_coherent interface to explicitly
#       request zeroing, but that just added __GFP_ZERO to the allocation
#       flags, which for some allocators that didn't end up using the page
#       allocator ended up being a no-op and still not zeroing the
#       allocations.
#     
#       So for this merge window I fixed up all remaining architectures to
#       zero the memory in dma_alloc_coherent, and made dma_zalloc_coherent a
#       no-op wrapper around dma_alloc_coherent, which fixes all of the above
#       issues.
#     
#       dma_zalloc_coherent is now pointless and can go away, and Luis helped
#       me writing a cocchinelle script and patch series to kill it, which I
#       think we should apply now just after -rc1 to finally settle these
#       issue"
#     
#     * tag 'remove-dma_zalloc_coherent-5.0' of git://git.infradead.org/users/hch/dma-mapping:
#       dma-mapping: remove dma_zalloc_coherent()
#       cross-tree: phase out dma_zalloc_coherent() on headers
#       cross-tree: phase out dma_zalloc_coherent()
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-ld --version
# < git log --format=%s --max-count=1 66c56cfa64d9dbb9efa8a06c1aece77e8d57ea19
# < make -s -j 48 ARCH=arm O=/kisskb/build/linus_arm-allnoconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  allnoconfig
# make -s -j 48 ARCH=arm O=/kisskb/build/linus_arm-allnoconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/linus_arm-allnoconfig_arm
# Build took: 0:00:10.839023