On Sun, Jul 14, 2013 at 06:58:23PM +0200, Paolo Bonzini wrote: > Il 12/07/2013 04:39, Hu Tao ha scritto: > > > without necessity to specify to be hot-plugged DIMMs at startup, hot-plug > > > could become more flexible since arbitrarily sized DIMMs with required > > > NUMA > > > mapping could be specified during hot-plug time, for example: > > > > > > device_add dimm,id=dimm1,bus=membus.0,size=3G,node=1,... > > > > Seems impossible as ACPI memory devices' ranges must be specified at > > startup, > > but I'll be glad if I'm wrong. > > Yeah, I also understood the problem to be the SRAT, not the DSDT... Of > course you could reserve a single large part of the address range in > "-numa mem", and then add one or more DIMMs covering only part of the > address range.
still needs to specify -dimm at startup, right? > > Perhaps "populated" could be a size instead of a boolean, to do > something like what Igor suggested. seems odd that a memory device is partially populated. How can guest OS and firmware cope with that? > > Paolo
