"Michael S. Tsirkin" <mst@xxxxxxxxxx> writes: > On Tue, Jun 04, 2013 at 03:01:50PM +0930, Rusty Russell wrote: > You mean make BAR0 an MMIO BAR? > Yes, it would break current windows guests. > Further, as long as we use same address to notify all queues, > we would also need to decode the instruction on x86 and that's > measureably slower than PIO. > We could go back to discussing hypercall use for notifications, > but that has its own set of issues... So... does "violating the PCI-e" spec really matter? Is it preventing any guest from working properly? I don't think we should rush an ABI breakage if the only benefit is claiming spec compliance. Regards, Anthony Liguori > > -- > MST > -- > 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 -- 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
