ich777/linux_media
1
0
Fork 0
mirror of https://github.com/tbsdtv/linux_media.git synced 2025-07-23 12:43:29 +02:00
Code Issues Packages Projects Releases Wiki Activity

vfio: Replace the iommu notifier with a device list

Browse Source 
Instead of bouncing the function call to the driver op through a blocking
notifier just have the iommu layer call it directly.

Register each device that is being attached to the iommu with the lower
driver which then threads them on a linked list and calls the appropriate
driver op at the right time.

Currently the only use is if dma_unmap() is defined.

Also, fully lock all the debugging tests on the pinning path that a
dma_unmap is registered.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/2-v4-681e038e30fd+78-vfio_unmap_notif_jgg@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Jason Gunthorpe
2022-07-19 21:02:49 -03:00
committed by Alex Williamson
parent ce4b4657ff
commit 8cfc5b6075
4 changed files with 81 additions and 77 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/vfio.h
View File

@@ -49,7 +49,7 @@ struct vfio_device {
unsigned int open_count;
struct completion comp;
struct list_head group_next;
struct notifier_block iommu_nb;
struct list_head iommu_entry;
};
/**