Merge tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull hmm updates from Jason Gunthorpe:
 "This is another round of bug fixing and cleanup. This time the focus
  is on the driver pattern to use mmu notifiers to monitor a VA range.
  This code is lifted out of many drivers and hmm_mirror directly into
  the mmu_notifier core and written using the best ideas from all the
  driver implementations.

  This removes many bugs from the drivers and has a very pleasing
  diffstat. More drivers can still be converted, but that is for another
  cycle.

   - A shared branch with RDMA reworking the RDMA ODP implementation

   - New mmu_interval_notifier API. This is focused on the use case of
     monitoring a VA and simplifies the process for drivers

   - A common seq-count locking scheme built into the
     mmu_interval_notifier API usable by drivers that call
     get_user_pages() or hmm_range_fault() with the VA range

   - Conversion of mlx5 ODP, hfi1, radeon, nouveau, AMD GPU, and Xen
     GntDev drivers to the new API. This deletes a lot of wonky driver
     code.

   - Two improvements for hmm_range_fault(), from testing done by Ralph"

* tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  mm/hmm: remove hmm_range_dma_map and hmm_range_dma_unmap
  mm/hmm: make full use of walk_page_range()
  xen/gntdev: use mmu_interval_notifier_insert
  mm/hmm: remove hmm_mirror and related
  drm/amdgpu: Use mmu_interval_notifier instead of hmm_mirror
  drm/amdgpu: Use mmu_interval_insert instead of hmm_mirror
  drm/amdgpu: Call find_vma under mmap_sem
  nouveau: use mmu_interval_notifier instead of hmm_mirror
  nouveau: use mmu_notifier directly for invalidate_range_start
  drm/radeon: use mmu_interval_notifier_insert
  RDMA/hfi1: Use mmu_interval_notifier_insert for user_exp_rcv
  RDMA/odp: Use mmu_interval_notifier_insert()
  mm/hmm: define the pre-processor related parts of hmm.h even if disabled
  mm/hmm: allow hmm_range to be used with a mmu_interval_notifier or hmm_mirror
  mm/mmu_notifier: add an interval tree notifier
  mm/mmu_notifier: define the header pre-processor parts even if disabled
  mm/hmm: allow snapshot of the special zero page

diff --cc drivers/gpu/drm/amd/amdgpu/amdgpu.h
Simple merge

diff --cc drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
Simple merge

diff --cc drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
Simple merge

diff --cc drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
Simple merge

diff --cc drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
Simple merge

diff --cc drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
Simple merge

diff --cc drivers/infiniband/core/device.c
index 9ebb09a,ac7924b..84dd74f
--- 1/drivers/infiniband/core/device.c
--- 2/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@@ -2631,10 -2615,8 +2631,9 @@@ void ib_set_device_ops(struct ib_devic
        SET_DEVICE_OP(dev_ops, get_port_immutable);
        SET_DEVICE_OP(dev_ops, get_vector_affinity);
        SET_DEVICE_OP(dev_ops, get_vf_config);
 +      SET_DEVICE_OP(dev_ops, get_vf_guid);
        SET_DEVICE_OP(dev_ops, get_vf_stats);
        SET_DEVICE_OP(dev_ops, init_port);
-       SET_DEVICE_OP(dev_ops, invalidate_range);
        SET_DEVICE_OP(dev_ops, iw_accept);
        SET_DEVICE_OP(dev_ops, iw_add_ref);
        SET_DEVICE_OP(dev_ops, iw_connect);

diff --cc drivers/infiniband/hw/mlx5/mlx5_ib.h
Simple merge

diff --cc drivers/infiniband/hw/mlx5/mr.c
Simple merge

diff --cc drivers/infiniband/hw/mlx5/odp.c
index 45ee40c,63e0ebd..f924250
--- 1/drivers/infiniband/hw/mlx5/odp.c
--- 2/drivers/infiniband/hw/mlx5/odp.c
+++ b/drivers/infiniband/hw/mlx5/odp.c
@@@ -248,7 -251,8 +251,9 @@@ static bool mlx5_ib_invalidate_range(st
        const u64 umr_block_mask = (MLX5_UMR_MTT_ALIGNMENT /
                                    sizeof(struct mlx5_mtt)) - 1;
        u64 idx = 0, blk_start_idx = 0;
 +      u64 invalidations = 0;
+       unsigned long start;
+       unsigned long end;
        int in_block = 0;
        u64 addr;
  

diff --cc include/rdma/ib_verbs.h
Simple merge

diff --cc kernel/fork.c
Simple merge

diff --cc mm/Kconfig
Simple merge

diff --cc mm/mmu_notifier.c
Simple merge