Re: Question about reserved_regions w/ Intel IOMMU

[Jason Gunthorpe]

On Fri, Jun 16, 2023 at 08:27:21AM -0700, Alexander Duyck wrote:

> > > The problem is that the user may not open all the devices then
> > > currently there is no way for it to know the windows on those
> > > unopened devices.
> > >
> > > Curious why nobody complains about this gap before this thread...
> >
> > Probably because it only matters if you have a real PCIe switch in the
> > system, which is pretty rare.
> 
> So just FYI I am pretty sure we have a partitioned PCIe switch that
> has FW issues.

Yeah, that is pretty common :(

But I think you've touched on a gap in the API.

Jason