[PATCH v4 0/2] Remove the VFIO_IOMMU_NOTIFY_DMA_UNMAP notifier

[Jason Gunthorpe]

This is the last notifier toward the drivers, replace it with a simple op
callback in the vfio_device_ops.

v4:
 - Rebase over the CCW series
v3: https://lore.kernel.org/r/0-v3-7593f297c43f+56ce-vfio_unmap_notif_jgg@nvidia.com
 - Remove 'nb' doc string from ccw
 - Rebase on extern removal patch
 - Check that register_device/unregister_device are either both defined or
   not
 - Remove check of dma_unmap during vfio_register_iommu_driver() as it
   would break the drivers that don't use pin_pages
 - Don't change VFIO_IOMMU_NOTIFY_DMA_UNMAP to an enum since we are not
   keeping it anyhow
v2: https://lore.kernel.org/r/0-v2-80aa110d03ce+24b-vfio_unmap_notif_jgg@nvidia.com
 - Declare and initialize variables in intel_vgpu_dma_unmap()
 - Remove 'vendor' when touching comments
 - Remove kdoc for vfio dma_unmap notifier
 - Add WARN_ON to vfio_register_emulated_iommu_dev() since dma_unmap is
   mandatory
 - Move dma_unmap call loop to vfio_notify_dma_unmap()
 - Document why the double mutex is being used and why the mutex lock is
   dropped when calling dma_unmap
v1: https://lore.kernel.org/r/0-v1-896844109f36+a-vfio_unmap_notif_jgg@nvidia.com

Signed-off-by: Jason Gunthorpe <jgg at nvidia.com>

Jason Gunthorpe (2):
  vfio: Replace the DMA unmapping notifier with a callback
  vfio: Replace the iommu notifier with a device list

 drivers/gpu/drm/i915/gvt/gvt.h        |   1 -
 drivers/gpu/drm/i915/gvt/kvmgt.c      |  75 +++++-------------
 drivers/s390/cio/vfio_ccw_ops.c       |  39 ++--------
 drivers/s390/cio/vfio_ccw_private.h   |   2 -
 drivers/s390/crypto/vfio_ap_ops.c     |  53 ++-----------
 drivers/s390/crypto/vfio_ap_private.h |   3 -
 drivers/vfio/vfio.c                   | 108 ++++++--------------------
 drivers/vfio/vfio.h                   |   9 +--
 drivers/vfio/vfio_iommu_type1.c       | 103 +++++++++++++++---------
 include/linux/vfio.h                  |  21 +----
 10 files changed, 132 insertions(+), 282 deletions(-)


base-commit: 2a8ed7ef00b939fbcc98b948f780bd03bafed227
-- 
2.37.1