Re: [patch 21/32] NTB/msi: Convert to msi_on_each_desc()

Jason Gunthorpe
2022-09-22T12:13:59Z

On Thu, Sep 22, 2022 at 05:11:00AM +0000, Tian, Kevin wrote:

> > Thinking of the interrupt routing as a host resource is the problem -
> > it is a device resource and just like PASID the ideal design would
> > have each RID have its own stable numberspace scoped within it. The
> > entire RID and all its stable numberspace would be copied over.
> >
>
> Unfortunately it is not the case at least on Intel VT-d. The interrupt
> remapping table is per VT-d instead of per RID.

Doesn't that just turn it into a SW problem how it manages it?

Jason