On Wed, 24 Jan 2024, Andrew Cooper wrote: > On 24/01/2024 1:07 am, Stefano Stabellini wrote: > >> I agree with Jan that we could reuse > >> xendevicemodel_inject_msi by assuing that PCI BDF zero is invalid. > > I've already explained why that will break future x86. (See the other > thread off this patch for specifics). > > When we add vIOMMUs to guests, we *must* have correct source ids. 0 is > ambiguous, so not safe to reuse. > > > Allocating a new subop now is the only way to not shoot in the foot later.
OK, what you wrote makes sense to me.
