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Subject[PATCH 0/6] HMM updates, improvements and fixes v2
From: Jérôme Glisse <>

[Andrew this is for 4.20, stable fixes as cc to stable]

Few fixes that only affect HMM users. Improve the synchronization call
back so that we match was other mmu_notifier listener do and add proper
support to the new blockable flags in the process.

For curious folks here are branches to leverage HMM in various existing
device drivers:

More to come (amd gpu, Mellanox, ...)

I expect more of the preparatory work for nouveau will be merge in 4.20
(like we have been doing since 4.16) and i will wait until this patchset
is upstream before pushing the patches that actualy make use of HMM (to
avoid complex tree inter-dependency).

Jérôme Glisse (4):
mm/hmm: fix utf8 ...
mm/hmm: properly handle migration pmd v3
mm/hmm: use a structure for update callback parameters v2
mm/hmm: invalidate device page table at start of invalidation

Ralph Campbell (2):
mm/rmap: map_pte() was not handling private ZONE_DEVICE page properly
mm/hmm: fix race between hmm_mirror_unregister() and mmu_notifier

include/linux/hmm.h | 33 +++++++----
mm/hmm.c | 134 +++++++++++++++++++++++++++++--------------
mm/page_vma_mapped.c | 24 +++++++-
3 files changed, 137 insertions(+), 54 deletions(-)


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