On 08/02/2011 03:06 PM, Avi Kivity wrote: > I don't think there's any cpu which has a real 64-bit physical > address space? Don't they all truncate it?
I don't know. You're right that x86_64 does, at 48 bits. The alpha system I'm trying to emulate does, at 50 bits. I guess if IBM agrees wrt p-series and z-series emulation, then I'd be ok, so long as you add a comment above that structure that says no existing hw implementation actually uses 63 address bits. r~
