[PATCH 0/7] HMM updates, improvements and fixes

From: jglisse
Date: Fri Aug 24 2018 - 15:26:31 EST

From: JÃrÃme Glisse <jglisse@xxxxxxxxxx>

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).

JÃrÃme Glisse (5):
mm/hmm: fix utf8 ...
mm/hmm: properly handle migration pmd
mm/hmm: use a structure for update callback parameters
mm/hmm: invalidate device page table at start of invalidation
mm/hmm: proper support for blockable mmu_notifier

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 | 37 +++++++----
mm/hmm.c | 150 ++++++++++++++++++++++++++++++-------------
mm/page_vma_mapped.c | 9 +++
3 files changed, 142 insertions(+), 54 deletions(-)