Re: [DRAFT RFC] ioeventfd/ioregionfd support in vfio-user

[John Levon]

On Tue, Jan 26, 2021 at 11:01:04AM +0000, Stefan Hajnoczi wrote:

> > 4) (ioregionfd issue) region_id is 4 bytes, which seems a little awkward 
> > from
> > the server side: this has to encode both the region ID as well as the 
> > offset of
> > the sub-region within that region. Can this be 64 bits wide?
> 
> The user_data field in Elena's ioregionfd patches is 64 bits. Does this
> solve the problem?

I had missed this had been changed from the proposal at 
https://www.spinics.net/lists/kvm/msg208139.html

Thanks for pointing this out.

regards
john