# git rev-parse -q --verify aa32f1169148beb90d71494e2f2a1999ba7b5366^{commit}
aa32f1169148beb90d71494e2f2a1999ba7b5366
already have revision, skipping fetch
# git checkout -q -f -B kisskb aa32f1169148beb90d71494e2f2a1999ba7b5366
# git clean -qxdf
# < git log -1
# commit aa32f1169148beb90d71494e2f2a1999ba7b5366
# Merge: d5bb349dbbe2 93f4e735b6d9
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Nov 30 10:33:14 2019 -0800
# 
#     Merge tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
#     
#     Pull hmm updates from Jason Gunthorpe:
#      "This is another round of bug fixing and cleanup. This time the focus
#       is on the driver pattern to use mmu notifiers to monitor a VA range.
#       This code is lifted out of many drivers and hmm_mirror directly into
#       the mmu_notifier core and written using the best ideas from all the
#       driver implementations.
#     
#       This removes many bugs from the drivers and has a very pleasing
#       diffstat. More drivers can still be converted, but that is for another
#       cycle.
#     
#        - A shared branch with RDMA reworking the RDMA ODP implementation
#     
#        - New mmu_interval_notifier API. This is focused on the use case of
#          monitoring a VA and simplifies the process for drivers
#     
#        - A common seq-count locking scheme built into the
#          mmu_interval_notifier API usable by drivers that call
#          get_user_pages() or hmm_range_fault() with the VA range
#     
#        - Conversion of mlx5 ODP, hfi1, radeon, nouveau, AMD GPU, and Xen
#          GntDev drivers to the new API. This deletes a lot of wonky driver
#          code.
#     
#        - Two improvements for hmm_range_fault(), from testing done by Ralph"
#     
#     * tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
#       mm/hmm: remove hmm_range_dma_map and hmm_range_dma_unmap
#       mm/hmm: make full use of walk_page_range()
#       xen/gntdev: use mmu_interval_notifier_insert
#       mm/hmm: remove hmm_mirror and related
#       drm/amdgpu: Use mmu_interval_notifier instead of hmm_mirror
#       drm/amdgpu: Use mmu_interval_insert instead of hmm_mirror
#       drm/amdgpu: Call find_vma under mmap_sem
#       nouveau: use mmu_interval_notifier instead of hmm_mirror
#       nouveau: use mmu_notifier directly for invalidate_range_start
#       drm/radeon: use mmu_interval_notifier_insert
#       RDMA/hfi1: Use mmu_interval_notifier_insert for user_exp_rcv
#       RDMA/odp: Use mmu_interval_notifier_insert()
#       mm/hmm: define the pre-processor related parts of hmm.h even if disabled
#       mm/hmm: allow hmm_range to be used with a mmu_interval_notifier or hmm_mirror
#       mm/mmu_notifier: add an interval tree notifier
#       mm/mmu_notifier: define the header pre-processor parts even if disabled
#       mm/hmm: allow snapshot of the special zero page
# < /opt/cross/kisskb/or1k-linux-5.4.0-20170218/or1k-linux/bin/or1k-linux-gcc --version
# < /opt/cross/kisskb/or1k-linux-5.4.0-20170218/or1k-linux/bin/or1k-linux-ld --version
# < git log --format=%s --max-count=1 aa32f1169148beb90d71494e2f2a1999ba7b5366
# < make -s -j 120 ARCH=openrisc O=/kisskb/build/linus_or1ksim_defconfig_or32 CROSS_COMPILE=/opt/cross/kisskb/or1k-linux-5.4.0-20170218/or1k-linux/bin/or1k-linux-  or1ksim_defconfig
# make -s -j 120 ARCH=openrisc O=/kisskb/build/linus_or1ksim_defconfig_or32 CROSS_COMPILE=/opt/cross/kisskb/or1k-linux-5.4.0-20170218/or1k-linux/bin/or1k-linux-  
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
/kisskb/src/fs/io_uring.c: In function 'loop_rw_iter':
/kisskb/src/fs/io_uring.c:1628:21: error: implicit declaration of function 'kmap' [-Werror=implicit-function-declaration]
    iovec.iov_base = kmap(iter->bvec->bv_page)
                     ^
/kisskb/src/fs/io_uring.c:1628:19: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
    iovec.iov_base = kmap(iter->bvec->bv_page)
                   ^
/kisskb/src/fs/io_uring.c:1643:4: error: implicit declaration of function 'kunmap' [-Werror=implicit-function-declaration]
    kunmap(iter->bvec->bv_page);
    ^
cc1: some warnings being treated as errors
make[2]: *** [/kisskb/src/scripts/Makefile.build:265: fs/io_uring.o] Error 1
make[1]: *** [/kisskb/src/Makefile:1652: fs] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:179: sub-make] Error 2
Command 'make -s -j 120 ARCH=openrisc O=/kisskb/build/linus_or1ksim_defconfig_or32 CROSS_COMPILE=/opt/cross/kisskb/or1k-linux-5.4.0-20170218/or1k-linux/bin/or1k-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_or1ksim_defconfig_or32
# Build took: 0:00:13.373728