# git rev-parse -q --verify 8e143b90e4d45cca3dc53760d3cfab988bc74571^{commit}
8e143b90e4d45cca3dc53760d3cfab988bc74571
already have revision, skipping fetch
# git checkout -q -f -B kisskb 8e143b90e4d45cca3dc53760d3cfab988bc74571
# git clean -qxdf
# < git log -1
# commit 8e143b90e4d45cca3dc53760d3cfab988bc74571
# Merge: 78e8696c234a 03ebe48e235f
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Tue Jan 1 15:55:29 2019 -0800
# 
#     Merge tag 'iommu-updates-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
#     
#     Pull IOMMU updates from Joerg Roedel:
#     
#      - Page table code for AMD IOMMU now supports large pages where smaller
#        page-sizes were mapped before. VFIO had to work around that in the
#        past and I included a patch to remove it (acked by Alex Williamson)
#     
#      - Patches to unmodularize a couple of IOMMU drivers that would never
#        work as modules anyway.
#     
#      - Work to unify the the iommu-related pointers in 'struct device' into
#        one pointer. This work is not finished yet, but will probably be in
#        the next cycle.
#     
#      - NUMA aware allocation in iommu-dma code
#     
#      - Support for r8a774a1 and r8a774c0 in the Renesas IOMMU driver
#     
#      - Scalable mode support for the Intel VT-d driver
#     
#      - PM runtime improvements for the ARM-SMMU driver
#     
#      - Support for the QCOM-SMMUv2 IOMMU hardware from Qualcom
#     
#      - Various smaller fixes and improvements
#     
#     * tag 'iommu-updates-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (78 commits)
#       iommu: Check for iommu_ops == NULL in iommu_probe_device()
#       ACPI/IORT: Don't call iommu_ops->add_device directly
#       iommu/of: Don't call iommu_ops->add_device directly
#       iommu: Consolitate ->add/remove_device() calls
#       iommu/sysfs: Rename iommu_release_device()
#       dmaengine: sh: rcar-dmac: Use device_iommu_mapped()
#       xhci: Use device_iommu_mapped()
#       powerpc/iommu: Use device_iommu_mapped()
#       ACPI/IORT: Use device_iommu_mapped()
#       iommu/of: Use device_iommu_mapped()
#       driver core: Introduce device_iommu_mapped() function
#       iommu/tegra: Use helper functions to access dev->iommu_fwspec
#       iommu/qcom: Use helper functions to access dev->iommu_fwspec
#       iommu/of: Use helper functions to access dev->iommu_fwspec
#       iommu/mediatek: Use helper functions to access dev->iommu_fwspec
#       iommu/ipmmu-vmsa: Use helper functions to access dev->iommu_fwspec
#       iommu/dma: Use helper functions to access dev->iommu_fwspec
#       iommu/arm-smmu: Use helper functions to access dev->iommu_fwspec
#       ACPI/IORT: Use helper functions to access dev->iommu_fwspec
#       iommu: Introduce wrappers around dev->iommu_fwspec
#       ...
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 8e143b90e4d45cca3dc53760d3cfab988bc74571
# < make -s -j 10 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 allyesconfig
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_KCOV=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=n
# Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n
# Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n
# Added to kconfig CONFIG_GCC_PLUGIN_STRUCTLEAK=n
# Added to kconfig CONFIG_GCC_PLUGIN_RANDSTRUCT=n
# Added to kconfig CONFIG_UML_NET=n
# Added to kconfig CONFIG_UML_NET_ETHERTAP=n
# Added to kconfig CONFIG_UML_NET_TUNTAP=n
# Added to kconfig CONFIG_UML_NET_SLIP=n
# Added to kconfig CONFIG_UML_NET_DAEMON=n
# Added to kconfig CONFIG_UML_NET_VDE=n
# Added to kconfig CONFIG_UML_NET_MCAST=n
# Added to kconfig CONFIG_UML_NET_PCAP=n
# Added to kconfig CONFIG_UML_NET_SLIRP=n
# Added to kconfig CONFIG_GCOV_KERNEL=n
# yes \n | make -s -j 10 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 oldconfig
yes: standard output: Broken pipe
# make -s -j 10 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 
/kisskb/src/arch/um/os-Linux/umid.c: In function 'is_umdir_used':
/kisskb/src/arch/um/os-Linux/umid.c:138:2: warning: ISO C90 forbids variable length array 'file' [-Wvla]
  char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")];
  ^
/kisskb/src/arch/um/os-Linux/umid.c: In function 'create_pid_file':
/kisskb/src/arch/um/os-Linux/umid.c:213:2: warning: ISO C90 forbids variable length array 'file' [-Wvla]
  char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")];
  ^
/kisskb/src/arch/um/os-Linux/umid.c: In function 'remove_umid_dir':
/kisskb/src/arch/um/os-Linux/umid.c:388:2: warning: ISO C90 forbids variable length array 'dir' [-Wvla]
  char dir[strlen(uml_dir) + UMID_LEN + 1], err;
  ^
/kisskb/src/kernel/bpf/verifier.c: In function 'check_btf_info':
/kisskb/src/kernel/bpf/verifier.c:4878:4: warning: 'prev_offset' may be used uninitialized in this function [-Wmaybe-uninitialized]
    verbose(env,
    ^
/kisskb/src/kernel/bpf/verifier.c:4813:38: note: 'prev_offset' was declared here
  u32 i, nfuncs, urec_size, min_size, prev_offset;
                                      ^
/kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount':
/kisskb/src/kernel/cgroup/cgroup-v1.c:1263:3: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized]
   percpu_ref_reinit(&root->cgrp.self.refcnt);
   ^
/kisskb/src/security/apparmor/policy_unpack.c: In function 'unpack_trans_table':
/kisskb/src/security/apparmor/policy_unpack.c:496:9: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized]
      str[pos] = ':';
         ^
/kisskb/src/lib/lz4/lz4hc_compress.c: In function 'LZ4HC_compress_generic':
/kisskb/src/lib/lz4/lz4hc_compress.c:579:1: warning: the frame size of 2144 bytes is larger than 2048 bytes [-Wframe-larger-than=]
 }
 ^
/kisskb/src/drivers/i2c/i2c-core-base.c: In function 'i2c_generic_scl_recovery':
/kisskb/src/drivers/i2c/i2c-core-base.c:235:5: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
  if (ret == -EOPNOTSUPP)
     ^
drivers/dma-buf/udmabuf.o: In function `map_udmabuf':
/kisskb/src/include/linux/dma-mapping.h:343: undefined reference to `dma_direct_map_sg'
drivers/fpga/dfl-afu-dma-region.o: In function `afu_dma_map_region':
/kisskb/src/include/linux/dma-mapping.h:377: undefined reference to `dma_direct_map_page'
collect2: error: ld returned 1 exit status
make[1]: *** [/kisskb/src/Makefile:1026: vmlinux] Error 1
make: *** [Makefile:152: sub-make] Error 2
Command 'make -s -j 10 ARCH=um O=/kisskb/build/linus_um-allyesconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_um-allyesconfig_um-x86_64
# Build took: 0:05:59.501498