[PATCH v2] iommu: Allow device driver to use its own PASID space for SVA

[Tian, Kevin]

> From: Joonwon Kang <joonwonkang at google.com>
> Sent: Tuesday, May 26, 2026 2:58 PM
> 
> > On Mon, May 25, 2026 at 03:29:24PM +0000, Joonwon Kang wrote:
> >
> > > Currently, the only known expected user of the new kAPI is our team.
> Since
> > > I test if the patch resolves our problem before sending it, I believe it
> > > should be good enough. Do you mean more than our team by
> "accompanied
> > > users"?
> >
> > He means you cannot send patches like this that only serve OOT drivers
> > to the mainline kernel.
> 
> Hmm, it gets back to the chicken-and-egg problem. So, do you recommend
> deferring the patch submission until we find a new in-tree user of the
> new kAPI? I believe we will not make our module in-tree anytime soon.
> Or, is it like I still can send the patch and get it reviewed although we
> cannot merge it to the mainline?
> 

It's not chicken-and-egg problem. Just always send them together.

so let's wait until your module is ready for in-tree review...