# 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/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 aa32f1169148beb90d71494e2f2a1999ba7b5366
# < make -s -j 32 ARCH=arm O=/kisskb/build/linus_bcm2835_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  bcm2835_defconfig
# make -s -j 32 ARCH=arm O=/kisskb/build/linus_bcm2835_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  
/kisskb/src/arch/arm/kernel/patch.c: In function '__patch_text_real':
/kisskb/src/arch/arm/include/asm/irqflags.h:171:2: warning: 'flags' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/arm/kernel/patch.c:61:16: note: 'flags' was declared here
/kisskb/src/ipc/shm.c: In function 'ksys_shmdt':
/kisskb/src/ipc/shm.c:1712:59: warning: 'file' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/lib/mpi/mpicoder.c: In function 'mpi_read_raw_from_sgl':
/kisskb/src/lib/mpi/mpicoder.c:336:12: warning: 'buff' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/core/gen_stats.c: In function '__gnet_stats_copy_basic':
/kisskb/src/net/core/gen_stats.c:156:19: warning: 'seq' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/lib/rhashtable.c: In function 'rht_deferred_worker':
/kisskb/src/include/linux/rhashtable.h:110:10: warning: 'next' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/lib/rhashtable.c:222:28: note: 'next' was declared here
/kisskb/src/mm/ksm.c: In function '__stable_node_chain':
/kisskb/src/mm/ksm.c:1391:15: warning: 'found_rmap_hlist_len' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/mm/ksm.c:1363:6: note: 'found_rmap_hlist_len' was declared here
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/core/dev.c: In function 'validate_xmit_skb_list':
/kisskb/src/net/core/dev.c:3547:15: warning: 'tail' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpio/gpiolib-of.c: In function 'of_gpiochip_add':
/kisskb/src/drivers/gpio/gpiolib-of.c:626:8: warning: 'dflags' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpio/gpiolib-of.c:612:19: note: 'dflags' was declared here
/kisskb/src/drivers/gpio/gpiolib-of.c:626:8: warning: 'lflags' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpio/gpiolib-of.c:611:16: note: 'lflags' was declared here
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:338:21: note: 'pdeo' was declared here
/kisskb/src/drivers/gpu/drm/drm_dp_mst_topology.c: In function 'drm_dp_sideband_msg_build':
/kisskb/src/drivers/gpu/drm/drm_dp_mst_topology.c:722:23: warning: 'hdrlen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/drm_atomic.c: In function 'drm_atomic_check_only':
/kisskb/src/drivers/gpu/drm/drm_atomic.c:426:38: warning: 'crtc_state' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/drm_atomic.c:405:25: note: 'crtc_state' was declared here
/kisskb/src/net/mac80211/tx.c: In function 'ieee80211_build_hdr':
/kisskb/src/net/mac80211/tx.c:2542:27: warning: 'chanctx_conf' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/mac80211/mlme.c: In function 'ieee80211_rx_mgmt_beacon':
/kisskb/src/net/mac80211/mlme.c:1576:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/mac80211/mlme.c:1533:6: note: 'pwr_level_cisco' was declared here
/kisskb/src/net/wireless/nl80211.c: In function 'nl80211_vendor_cmd_dump':
/kisskb/src/net/wireless/nl80211.c:13147:33: warning: 'wdev' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/wireless/nl80211.c:13117:21: warning: 'rdev' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/linus_bcm2835_defconfig_arm
# Build took: 0:01:32.697372