> From: Jason Gunthorpe <jgg@xxxxxxxxxx>
> Sent: Monday, February 6, 2023 11:11 PM
>
> On Mon, Feb 06, 2023 at 10:09:52AM +0000, Tian, Kevin wrote:
> > It's probably simpler if we always mark DMA owner with vfio_group
> > for the group path, no matter vfio type1 or iommufd compat is used.
> > This should avoid all the tricky corner cases between the two paths.
>
> Yes
Then, we have two choices:
1) extend iommufd_device_bind() to allow a caller-specified DMA marker
2) claim DMA owner before calling iommufd_device_bind(), still need to
extend iommufd_device_bind() to accept a flag to bypass DMA owner claim
which one would be better? or do we have a third choice?
Regards,
Yi Liu
