From: Jérôme Glisse <jglisse@xxxxxxxxxx> [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: https://cgit.freedesktop.org/~glisse/linux/log/?h=hmm-nouveau-v01 https://cgit.freedesktop.org/~glisse/linux/log/?h=hmm-radeon-v00 https://cgit.freedesktop.org/~glisse/linux/log/?h=hmm-intel-v00 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 v3 mm/hmm: fix race between hmm_mirror_unregister() and mmu_notifier callback include/linux/hmm.h | 33 +++++++---- mm/hmm.c | 134 +++++++++++++++++++++++++++++-------------- mm/page_vma_mapped.c | 24 +++++++- 3 files changed, 137 insertions(+), 54 deletions(-) -- 2.17.2
