> From: Jason Wang <[email protected]> > Sent: Thursday, April 13, 2023 11:18 PM
> > > > > > It's a must for ABI and migration compatibility: > > > > > > 1) The offset is not necessarily a page boundary > > > 2) The length is not necessarily times of a PAGE_SIZE > > > 3) PAGE_SIZE varies among different archs > > > 4) Two vendors may have two different layout for the structure > > > > Migration compatibility check and device composition work will start for > regular PCI VF in virtio. > > Two vendors will had some level of programmability as well to make this > happen. > > It is orthogonal topic. > > Actually not, having new blockers for live migration will complicate the > solution > in the future. > It is not a blocker, its just another flexible field that hw vendors will align to a common way to configure. Just to make sure this is the BAR0 size, right? > And 1) 2) 3) can happen even if we don't care about migration compatibility, > no? I guess one we have spec definition, it wont be a problem.
