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vfio/mdev: Pass in a struct vfio_device * to vfio_dma_rw()

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Every caller has a readily available vfio_device pointer, use that instead
of passing in a generic struct device. Change vfio_dma_rw() to take in the
struct vfio_device and move the container users that would have been held
by vfio_group_get_external_user_from_dev() to vfio_dma_rw() directly, like
vfio_pin/unpin_pages().

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/4-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 13:12:59 -06:00
committed by Alex Williamson
parent 8e432bb015
commit c6250ffbac
3 changed files with 14 additions and 16 deletions
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2
include/linux/vfio.h
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@@ -161,7 +161,7 @@ extern int vfio_group_pin_pages(struct vfio_group *group,
extern int vfio_group_unpin_pages(struct vfio_group *group,
unsigned long *user_iova_pfn, int npage);
extern int vfio_dma_rw(struct vfio_group *group, dma_addr_t user_iova,
extern int vfio_dma_rw(struct vfio_device *device, dma_addr_t user_iova,
void *data, size_t len, bool write);
extern struct iommu_domain *vfio_group_iommu_domain(struct vfio_group *group);