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vfio: Make vfio_(un)register_notifier accept a vfio_device

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All callers have a struct vfio_device trivially available, pass it in
directly and avoid calling the expensive vfio_group_get_from_dev().

Acked-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Jason J. Herne <jjherne@linux.ibm.com>
Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/1-v4-8045e76bf00b+13d-vfio_mdev_no_group_jgg@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Jason Gunthorpe
2022-05-11 13:12:58 -06:00
committed by Alex Williamson
parent a77109ffca
commit 09ea48efff
5 changed files with 33 additions and 44 deletions
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4
include/linux/vfio.h
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@@ -178,11 +178,11 @@ enum vfio_notify_type {
/* events for VFIO_GROUP_NOTIFY */
#define VFIO_GROUP_NOTIFY_SET_KVM BIT(0)
extern int vfio_register_notifier(struct device *dev,
extern int vfio_register_notifier(struct vfio_device *device,
enum vfio_notify_type type,
unsigned long *required_events,
struct notifier_block *nb);
extern int vfio_unregister_notifier(struct device *dev,
extern int vfio_unregister_notifier(struct vfio_device *device,
enum vfio_notify_type type,
struct notifier_block *nb);