Avi Kivity wrote:
Rusty Russell wrote:
BTW, including base and limit makes sense. I didn't do this to start
since Avi doesn't want to guarentee kvm's guest mapping linear (of
course he's only doing this so he can fix it later).
And also, because memory hotplug and 64-bit PCI BARs require reserving
an infinite virtual address space range. Not to mention that someone
needs to update the dirty bitmap in case we're live migrating.
You can certainly hotplug to the next RAM address so it doesn't require
infinite space. You wouldn't send a packet from/to a PCI IO region so I
don't think that practically speaking that's a problem.
But the base/limit thing is a bit of a hack. I don't think the
userspace translation is going to be a problem.
Regards,
Anthony Liguori
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