Messages in this thread | | | Subject | Re: [PATCH 00/10] HMM updates for 5.1 | From | Ralph Campbell <> | Date | Fri, 22 Feb 2019 15:31:18 -0800 |
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On 1/29/19 8:54 AM, jglisse@redhat.com wrote: > From: Jérôme Glisse <jglisse@redhat.com> > > This patchset improves the HMM driver API and add support for hugetlbfs > and DAX mirroring. The improvement motivation was to make the ODP to HMM > conversion easier [1]. Because we have nouveau bits schedule for 5.1 and > to avoid any multi-tree synchronization this patchset adds few lines of > inline function that wrap the existing HMM driver API to the improved > API. The nouveau driver was tested before and after this patchset and it > builds and works on both case so there is no merging issue [2]. The > nouveau bit are queue up for 5.1 so this is why i added those inline. > > If this get merge in 5.1 the plans is to merge the HMM to ODP in 5.2 or > 5.3 if testing shows any issues (so far no issues has been found with > limited testing but Mellanox will be running heavier testing for longer > time). > > To avoid spamming mm i would like to not cc mm on ODP or nouveau patches, > however if people prefer to see those on mm mailing list then i can keep > it cced. > > This is also what i intend to use as a base for AMD and Intel patches > (v2 with more thing of some rfc which were already posted in the past). > > [1] https://cgit.freedesktop.org/~glisse/linux/log/?h=odp-hmm > [2] https://cgit.freedesktop.org/~glisse/linux/log/?h=hmm-for-5.1 > > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: Felix Kuehling <Felix.Kuehling@amd.com> > Cc: Christian König <christian.koenig@amd.com> > Cc: Ralph Campbell <rcampbell@nvidia.com> > Cc: John Hubbard <jhubbard@nvidia.com> > Cc: Jason Gunthorpe <jgg@mellanox.com> > Cc: Dan Williams <dan.j.williams@intel.com> > > Jérôme Glisse (10): > mm/hmm: use reference counting for HMM struct > mm/hmm: do not erase snapshot when a range is invalidated > mm/hmm: improve and rename hmm_vma_get_pfns() to hmm_range_snapshot() > mm/hmm: improve and rename hmm_vma_fault() to hmm_range_fault() > mm/hmm: improve driver API to work and wait over a range > mm/hmm: add default fault flags to avoid the need to pre-fill pfns > arrays. > mm/hmm: add an helper function that fault pages and map them to a > device > mm/hmm: support hugetlbfs (snap shoting, faulting and DMA mapping) > mm/hmm: allow to mirror vma of a file on a DAX backed filesystem > mm/hmm: add helpers for driver to safely take the mmap_sem > > include/linux/hmm.h | 290 ++++++++++-- > mm/hmm.c | 1060 +++++++++++++++++++++++++++++-------------- > 2 files changed, 983 insertions(+), 367 deletions(-) >
I have been testing this patch series in addition to [1] with some success. I wouldn't go as far as saying it is thoroughly tested but you can add:
Reviewed-by: Ralph Campbell <rcampbell@nvidia.com>
[1] https://marc.info/?l=linux-mm&m=155060669514459&w=2 ("[PATCH v5 0/9] mmu notifier provide context informations")
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