Re: [PATCH V1 0/9] iommu_ioas_map_file

[Jason Gunthorpe <jgg@nvidia.com>]

On Wed, Sep 18, 2024 at 10:52:57AM -0400, Steven Sistare wrote:
> On 9/15/2024 4:30 PM, Jason Gunthorpe wrote:
> > On Sat, Sep 14, 2024 at 06:05:49AM -0700, Steve Sistare wrote:
> > > Provide the IOMMU_IOAS_MAP_FILE ioctl, which allows a user to register
> > > memory by passing a memfd plus offset and length.  Implement it using
> > > the memfd_map_folios KAPI, and the proposed repin_folio_unhugely KAPI.
> > > See the individual patches for details.
> > 
> > Do you want to do this and the other patches as well?
> > 
> > This seems much easier to understand, and over the long run I expect
> > to wrap VFIO in a DMABUF FD as well, so it should work well.
> 
> By "other patches", do you mean iommu_ioas_change_process and friends,
> with VA manipulation removed?

I was meaning iommu_ioas_change_process as you already showed it, but
that seems to answer the question that we will rely on this approach
and drop the VA stuff

Thanks,
Jason