> From: David Gibson
> Sent: Monday, October 25, 2021 1:05 PM
>
> > > > For above cases a [base, max] hint can be provided by the user per
> > > > Jason's recommendation.
> > >
> > > Provided at which stage?
> >
> > IOMMU_IOASID_ALLOC
>
> Ok. I have mixed thoughts on this. Doing this at ALLOC
> From: Jason Gunthorpe
> Sent: Tuesday, October 26, 2021 7:35 AM
>
> On Fri, Oct 22, 2021 at 03:08:06AM +, Tian, Kevin wrote:
>
> > > I have no idea what security model makes sense for wbinvd, that is the
> > > major question you have to answer.
> >
> > wbinvd flushes the entire cache in
On Mon, Oct 25, 2021 at 08:36:02PM -0300, Jason Gunthorpe wrote:
> On Tue, Oct 26, 2021 at 12:16:43AM +1100, David Gibson wrote:
> > If you attach devices A and B (both in group X) to IOAS 1, then detach
> > device A, what happens? Do you detach both devices? Or do you have a
> > counter so you
