# git rev-parse -q --verify a13f0655503a4a89df67fdc7cac6a7810795d4b3^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
warning: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify a13f0655503a4a89df67fdc7cac6a7810795d4b3^{commit}
a13f0655503a4a89df67fdc7cac6a7810795d4b3
# git checkout -q -f -B kisskb a13f0655503a4a89df67fdc7cac6a7810795d4b3
# git clean -qxdf
# < git log -1
# commit a13f0655503a4a89df67fdc7cac6a7810795d4b3
# Merge: 55472bae5331 b5531563e8a0
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon May 13 09:23:18 2019 -0400
# 
#     Merge tag 'iommu-updates-v5.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/joro/iommu
#     
#     Pull IOMMU updates from Joerg Roedel:
#     
#      - ATS support for ARM-SMMU-v3.
#     
#      - AUX domain support in the IOMMU-API and the Intel VT-d driver. This
#        adds support for multiple DMA address spaces per (PCI-)device. The
#        use-case is to multiplex devices between host and KVM guests in a
#        more flexible way than supported by SR-IOV.
#     
#      - the rest are smaller cleanups and fixes, two of which needed to be
#        reverted after testing in linux-next.
#     
#     * tag 'iommu-updates-v5.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (45 commits)
#       Revert "iommu/amd: Flush not present cache in iommu_map_page"
#       Revert "iommu/amd: Remove the leftover of bypass support"
#       iommu/vt-d: Fix leak in intel_pasid_alloc_table on error path
#       iommu/vt-d: Make kernel parameter igfx_off work with vIOMMU
#       iommu/vt-d: Set intel_iommu_gfx_mapped correctly
#       iommu/amd: Flush not present cache in iommu_map_page
#       iommu/vt-d: Cleanup: no spaces at the start of a line
#       iommu/vt-d: Don't request page request irq under dmar_global_lock
#       iommu/vt-d: Use struct_size() helper
#       iommu/mediatek: Fix leaked of_node references
#       iommu/amd: Remove amd_iommu_pd_list
#       iommu/arm-smmu: Log CBFRSYNRA register on context fault
#       iommu/arm-smmu-v3: Don't disable SMMU in kdump kernel
#       iommu/arm-smmu-v3: Disable tagged pointers
#       iommu/arm-smmu-v3: Add support for PCI ATS
#       iommu/arm-smmu-v3: Link domains and devices
#       iommu/arm-smmu-v3: Add a master->domain pointer
#       iommu/arm-smmu-v3: Store SteamIDs in master
#       iommu/arm-smmu-v3: Rename arm_smmu_master_data to arm_smmu_master
#       ACPI/IORT: Check ATS capability in root complex nodes
#       ...
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version
# < git log --format=%s --max-count=1 a13f0655503a4a89df67fdc7cac6a7810795d4b3
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/linus_pasemi_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  pasemi_defconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/linus_pasemi_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
<stdin>:1388:2: warning: #warning syscall open_tree not implemented [-Wcpp]
<stdin>:1391:2: warning: #warning syscall move_mount not implemented [-Wcpp]
<stdin>:1394:2: warning: #warning syscall fsopen not implemented [-Wcpp]
<stdin>:1397:2: warning: #warning syscall fsconfig not implemented [-Wcpp]
<stdin>:1400:2: warning: #warning syscall fsmount not implemented [-Wcpp]
<stdin>:1403:2: warning: #warning syscall fspick not implemented [-Wcpp]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:187:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields':
/kisskb/src/kernel/rcu/srcutree.c:140:32: warning: 'levelspread[<U7500>]' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/rcu/srcutree.c:88:6: note: 'levelspread[<U7500>]' 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:331:21: note: 'pdeo' was declared here
/kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read':
/kisskb/src/drivers/base/regmap/regmap.c:2589:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write':
/kisskb/src/drivers/base/regmap/regmap.c:1850:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/futex.c: In function 'do_futex':
/kisskb/src/kernel/futex.c:1658:3: warning: 'oldval' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/futex.c:1633:6: note: 'oldval' was declared here
/kisskb/src/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc':
/kisskb/src/fs/nfsd/nfs4xdr.c:2076:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char':
/kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:227:19: note: 'i' was declared here
/kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page':
/kisskb/src/mm/hugetlb.c:1435:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized]
WARNING: vmlinux.o(.text+0x2f2a): Section mismatch in reference from the variable start_here_multiplatform to the function .init.text:.early_setup()
The function start_here_multiplatform() references
the function __init .early_setup().
This is often because start_here_multiplatform lacks a __init 
annotation or the annotation of .early_setup is wrong.

Completed OK
# rm -rf /kisskb/build/linus_pasemi_defconfig_powerpc-gcc4.6
# Build took: 0:01:07.878693