summaryrefslogtreecommitdiff
path: root/drivers/vfio/vfio.h
diff options
context:
space:
mode:
authorJason Gunthorpe <jgg@nvidia.com>2022-07-19 21:02:48 -0300
committerAlex Williamson <alex.williamson@redhat.com>2022-07-20 11:57:59 -0600
commitce4b4657ff18925c315855aa290e93c5fa652d96 (patch)
tree0d477801e16d534577d08b2a76cb969896e521f1 /drivers/vfio/vfio.h
parent2a8ed7ef00b939fbcc98b948f780bd03bafed227 (diff)
vfio: Replace the DMA unmapping notifier with a callback
Instead of having drivers register the notifier with explicit code just have them provide a dma_unmap callback op in their driver ops and rely on the core code to wire it up. Suggested-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/1-v4-681e038e30fd+78-vfio_unmap_notif_jgg@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio/vfio.h')
-rw-r--r--drivers/vfio/vfio.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/vfio/vfio.h b/drivers/vfio/vfio.h
index a67130221151..25da02ca1568 100644
--- a/drivers/vfio/vfio.h
+++ b/drivers/vfio/vfio.h
@@ -33,6 +33,9 @@ enum vfio_iommu_notify_type {
VFIO_IOMMU_CONTAINER_CLOSE = 0,
};
+/* events for register_notifier() */
+#define VFIO_IOMMU_NOTIFY_DMA_UNMAP BIT(0)
+
/**
* struct vfio_iommu_driver_ops - VFIO IOMMU driver callbacks
*/