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| author |   Jérôme Glisse <jglisse@redhat.com> | 2018-04-10 16:29:06 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-11 10:28:31 -0700 |
| commit | f88a1e90c665408732ab16ea48e1a182dce597a2 (patch) | |
| tree | 4ed3ef70808a331a8fb6e773cb5d5d12c13c8642 /mm/percpu-vm.c | |
| parent | mm/hmm: change hmm_vma_fault() to allow write fault on page basis (diff) | |
| download | wireguard-linux-f88a1e90c665408732ab16ea48e1a182dce597a2.tar.xz wireguard-linux-f88a1e90c665408732ab16ea48e1a182dce597a2.zip | |
mm/hmm: use device driver encoding for HMM pfn
Users of hmm_vma_fault() and hmm_vma_get_pfns() provide a flags array and
pfn shift value allowing them to define their own encoding for HMM pfn
that are fill inside the pfns array of the hmm_range struct. With this
device driver can get pfn that match their own private encoding out of HMM
without having to do any conversion.
[rcampbell@nvidia.com: don't ignore specific pte fault flag in hmm_vma_fault()]
Link: http://lkml.kernel.org/r/20180326213009.2460-2-jglisse@redhat.com
[rcampbell@nvidia.com: clarify fault logic for device private memory]
Link: http://lkml.kernel.org/r/20180326213009.2460-3-jglisse@redhat.com
Link: http://lkml.kernel.org/r/20180323005527.758-16-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Cc: Evgeny Baskakov <ebaskakov@nvidia.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Mark Hairgrove <mhairgrove@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/percpu-vm.c')
0 files changed, 0 insertions, 0 deletions