We probably shouldn't given the requirement for PCIe devices to be able to operate without configured I/O BARs. On the other hand what about a host which can only virtualize I/O for some reason... not sure if that is a realistic scenario. "Michael S. Tsirkin" <mst@xxxxxxxxxx> wrote: >On Tue, Mar 26, 2013 at 07:31:31PM -0700, H. Peter Anvin wrote: >> On 03/26/2013 05:22 PM, H. Peter Anvin wrote: >> > I would say let it be undefined... in most cases the host will know >what device(s) will matter; e.g. if the guest is ppc no point in >providing an I/O BAR. >> >> For pluggable physical devices, though, both should be provided. >> >> -hpa > >Yes but what Rusty asked, is whether we should make the memory BAR >optional. > >> -- >> H. Peter Anvin, Intel Open Source Technology Center >> I work for Intel. I don't speak on their behalf. -- Sent from my mobile phone. Please excuse brevity and lack of formatting. _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
