Re: [Qemu-devel] [PATCH 0/10] Live migration for QEMU

[Avi Kivity]

Anthony Liguori wrote:
> > > Yes.  The primary reason that hasn't been possible in the past was 
> > > because of how memory was migrated.  The new memory migration 
> > > protocol happens to make it easier to let QEMU and KVM be 
> > > compatible.  That wasn't an accident :-)
> >
> > Well, it's still broken IMO (migration ram_addr_t rather than 
> > physical addresses).
>
> Have you thought of a solution other than make "mem" only save 
> physical memory and have everything else save their own memory?

Even worse, have each slot (0-640K, 1M-pci, 4GB-eom, hotplug slots, 
writeable option roms) be an independent save/restore entity.

> That gets really funky because then everything needs live save/restore 
> tracking.  It's quite messy.

Why? they can all reuse the same code.

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