On 19/06/2016 05:36, Michael S. Tsirkin wrote: > > Making the guest's phys-bits larger than host-phys-bits would be okay if > > you reserve the area in the e820 and assume the guest doesn't touch it. > > How would it touch it if there's no RAM there? > PCI BARs is the only thing that comes to mind, > but we fix that by making a sane _CRS.
Yes, I was thinking of PCI BARs. We're talking about making guest phys-bits independent from host-phys-bits, so I assume that you also want _CRS to be independent of host-phys-bits. I assume that _CRS would be related to guest-phys-bits. Paolo > What did I miss?