# git rev-parse -q --verify 341d041daae52cd5f014f68c1c7d9039db818fca^{commit}
341d041daae52cd5f014f68c1c7d9039db818fca
already have revision, skipping fetch
# git checkout -q -f -B kisskb 341d041daae52cd5f014f68c1c7d9039db818fca
# git clean -qxdf
# < git log -1
# commit 341d041daae52cd5f014f68c1c7d9039db818fca
# Merge: 51ae62a12c24 6d026e6d48cd
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Thu Nov 21 12:40:50 2024 -0800
# 
#     Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
#     
#     Pull iommufd updates from Jason Gunthorpe:
#      "Several new features and uAPI for iommufd:
#     
#        - IOMMU_IOAS_MAP_FILE allows passing in a file descriptor as the
#          backing memory for an iommu mapping. To date VFIO/iommufd have used
#          VMA's and pin_user_pages(), this now allows using memfds and
#          memfd_pin_folios(). Notably this creates a pure folio path from the
#          memfd to the iommu page table where memory is never broken down to
#          PAGE_SIZE.
#     
#        - IOMMU_IOAS_CHANGE_PROCESS moves the pinned page accounting between
#          two processes. Combined with the above this allows iommufd to
#          support a VMM re-start using exec() where something like qemu would
#          exec() a new version of itself and fd pass the memfds/iommufd/etc
#          to the new process. The memfd allows DMA access to the memory to
#          continue while the new process is getting setup, and the
#          CHANGE_PROCESS updates all the accounting.
#     
#        - Support for fault reporting to userspace on non-PRI HW, such as ARM
#          stall-mode embedded devices.
#     
#        - IOMMU_VIOMMU_ALLOC introduces the concept of a HW/driver backed
#          virtual iommu. This will be used by VMMs to access hardware
#          features that are contained with in a VM. The first use is to
#          inform the kernel of the virtual SID to physical SID mapping when
#          issuing SID based invalidation on ARM. Further uses will tie HW
#          features that are directly accessed by the VM, such as invalidation
#          queue assignment and others.
#     
#        - IOMMU_VDEVICE_ALLOC informs the kernel about the mapping of virtual
#          device to physical device within a VIOMMU. Minimially this is used
#          to translate VM issued cache invalidation commands from virtual to
#          physical device IDs.
#     
#        - Enhancements to IOMMU_HWPT_INVALIDATE and IOMMU_HWPT_ALLOC to work
#          with the VIOMMU
#     
#        - ARM SMMuv3 support for nested translation. Using the VIOMMU and
#          VDEVICE the driver can model this HW's behavior for nested
#          translation. This includes a shared branch from Will"
#     
#     * tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd: (51 commits)
#       iommu/arm-smmu-v3: Import IOMMUFD module namespace
#       iommufd: IOMMU_IOAS_CHANGE_PROCESS selftest
#       iommufd: Add IOMMU_IOAS_CHANGE_PROCESS
#       iommufd: Lock all IOAS objects
#       iommufd: Export do_update_pinned
#       iommu/arm-smmu-v3: Support IOMMU_HWPT_INVALIDATE using a VIOMMU object
#       iommu/arm-smmu-v3: Allow ATS for IOMMU_DOMAIN_NESTED
#       iommu/arm-smmu-v3: Use S2FWB for NESTED domains
#       iommu/arm-smmu-v3: Support IOMMU_DOMAIN_NESTED
#       iommu/arm-smmu-v3: Support IOMMU_VIOMMU_ALLOC
#       Documentation: userspace-api: iommufd: Update vDEVICE
#       iommufd/selftest: Add vIOMMU coverage for IOMMU_HWPT_INVALIDATE ioctl
#       iommufd/selftest: Add IOMMU_TEST_OP_DEV_CHECK_CACHE test command
#       iommufd/selftest: Add mock_viommu_cache_invalidate
#       iommufd/viommu: Add iommufd_viommu_find_dev helper
#       iommu: Add iommu_copy_struct_from_full_user_array helper
#       iommufd: Allow hwpt_id to carry viommu_id for IOMMU_HWPT_INVALIDATE
#       iommu/viommu: Add cache_invalidate to iommufd_viommu_ops
#       iommufd/selftest: Add IOMMU_VDEVICE_ALLOC test coverage
#       iommufd/viommu: Add IOMMUFD_OBJ_VDEVICE and IOMMU_VDEVICE_ALLOC ioctl
#       ...
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 341d041daae52cd5f014f68c1c7d9039db818fca
# make -s -j 160 ARCH=powerpc O=/kisskb/build/linus_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  skiroot_defconfig
# < make -s -j 160 ARCH=powerpc O=/kisskb/build/linus_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 160 ARCH=powerpc O=/kisskb/build/linus_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 160 ARCH=powerpc O=/kisskb/build/linus_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
Completed OK
# rm -rf /kisskb/build/linus_skiroot_defconfig_powerpc-gcc5
# Build took: 0:01:48.911010