Re: [PATCH v2 1/3] iommufd: Add devices_users to track the hw_pagetable usage by device

[Jason Gunthorpe]

On Wed, Feb 01, 2023 at 11:28:05PM -0800, Nicolin Chen wrote:

> So, in short, we'll have to wait for ->domain_alloc_user()
> patch (in the nesting series) to unblock the problem that we
> discussed above regarding the iopt_table_add_domain().

I think that is probably OK

It would be good to prepare a SMMUv3 patch assuming Robin's stuff
lands to move the domain iopt determination to allocate so we are
ready.

Jason