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authorLinus Torvalds <torvalds@linux-foundation.org>2020-04-02 02:57:52 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2020-04-02 02:57:52 +0200
commit50a5de895dbe5df947b3a695777db5b2c313e065 (patch)
tree4eb38b5b7a9c842ec3b262788ca17b19bfaf9015 /drivers/infiniband/ulp/ipoib
parentMerge tag 'xarray-5.7' of git://git.infradead.org/users/willy/linux-dax (diff)
parentmm/hmm: return error for non-vma snapshots (diff)
downloadlinux-50a5de895dbe5df947b3a695777db5b2c313e065.tar.xz
linux-50a5de895dbe5df947b3a695777db5b2c313e065.zip
Merge tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull hmm updates from Jason Gunthorpe: "This series focuses on corner case bug fixes and general clarity improvements to hmm_range_fault(). It arose from a review of hmm_range_fault() by Christoph, Ralph and myself. hmm_range_fault() is being used by these 'SVM' style drivers to non-destructively read the page tables. It is very similar to get_user_pages() except that the output is an array of PFNs and per-pfn flags, and it has various modes of reading. This is necessary before RDMA ODP can be converted, as we don't want to have weird corner case regressions, which is still a looking forward item. Ralph has a nice tester for this routine, but it is waiting for feedback from the selftests maintainers. Summary: - 9 bug fixes - Allow pgmap to track the 'owner' of a DEVICE_PRIVATE - in this case the owner tells the driver if it can understand the DEVICE_PRIVATE page or not. Use this to resolve a bug in nouveau where it could touch DEVICE_PRIVATE pages from other drivers. - Remove a bunch of dead, redundant or unused code and flags - Clarity improvements to hmm_range_fault()" * tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (25 commits) mm/hmm: return error for non-vma snapshots mm/hmm: do not set pfns when returning an error code mm/hmm: do not unconditionally set pfns when returning EBUSY mm/hmm: use device_private_entry_to_pfn() mm/hmm: remove HMM_FAULT_SNAPSHOT mm/hmm: remove unused code and tidy comments mm/hmm: return the fault type from hmm_pte_need_fault() mm/hmm: remove pgmap checking for devmap pages mm/hmm: check the device private page owner in hmm_range_fault() mm: simplify device private page handling in hmm_range_fault mm: handle multiple owners of device private pages in migrate_vma memremap: add an owner field to struct dev_pagemap mm: merge hmm_vma_do_fault into into hmm_vma_walk_hole_ mm/hmm: don't handle the non-fault case in hmm_vma_walk_hole_() mm/hmm: simplify hmm_vma_walk_hugetlb_entry() mm/hmm: remove the unused HMM_FAULT_ALLOW_RETRY flag mm/hmm: don't provide a stub for hmm_range_fault() mm/hmm: do not check pmd_protnone twice in hmm_vma_handle_pmd() mm/hmm: add missing call to hmm_pte_need_fault in HMM_PFN_SPECIAL handling mm/hmm: return -EFAULT when setting HMM_PFN_ERROR on requested valid pages ...
Diffstat (limited to 'drivers/infiniband/ulp/ipoib')
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