On Fri, Feb 07, 2025 at 10:30:20AM -0400, Jason Gunthorpe wrote: > On Thu, Feb 06, 2025 at 08:26:05PM -0800, Nicolin Chen wrote: > > Yea, I found iopt_reserve_iova() is actually missed entirely... > > > > While fixing this, I see a way to turn the OPTIONs back to per- > > idev, if you still prefer them to be per-idev(?). Then, we can > > check a given input in the set_option() against the device's > > reserved region list from the driver, prior to device attaching > > to any HWPT. > > I didn't have a strong opinion, if the idev works without complexity > then I'd stick with that on the basis of narrower scope is usually > better.
If you make it per-idev then it is also implicitly per-GIC as well since each idev has exactly one GIC This would make it useful as a way to get each ITS page mapped into a single fixed location.. Really hard to use from the VMM though Jason
