On Tue, 2015-11-10 at 15:44 -0800, Andy Lutomirski wrote: > > > What about partition <-> partition virtio such as what we could do on > > PAPR systems. That would have the weak barrier bit. > > > > Is it partition <-> partition, bypassing IOMMU? No. > I think I'd settle for just something that doesn't regress > non-experimental setups that actually work today and that allow new > setups (x86 with fixed QEMU and maybe something more complicated on > powerpc and/or sparc) to work in all cases. > > We could certainly just make powerpc and sparc continue bypassing the > IOMMU until someone comes up with a way to fix it. I'll send out some > patches that do that, and maybe that'll help this make progress. But we haven't found a solution that works. All we have come up with is a quirk that will force bypass on virtio always and will not allow us to operate non-bypassing devices on either of those architectures in the future. I'm not too happy about this. Ben. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
