[PATCH] arm64/kvm: Add generic v8 KVM target

On Jun 26, 2015, at 2:53 AM, Christoffer Dall [off-list ref] wrote:

On Thu, Jun 25, 2015 at 02:49:08PM +0100, Peter Maydell wrote:

quoted

On 25 June 2015 at 14:44, Marc Zyngier [off-list ref] wrote:

quoted

It should always be possible to emulate a "known" CPU on a generic host,
and it should be able to migrate. The case we can't migrate is when we
let the guest be generic (which I guess should really be unknown, and
not generic).

So if the user specify "-cpu cortex-a57" on the command line, the guest
should be able to migrate from an A72 to an A53. if the user specified
"-cpu host", the resulting guest won't be able to migrate.

Does it make sense?

Yes. We've always said "-cpu host" won't be cross-host migratable
from a QEMU point of view.

ok, this makes sense.  It's basically up to userspace to mandate that
trying to migrate something that used unknown cpu (via -cpu host or
whatever) cannot be migrated.

Will this also prevents migrating between same implementations, if no how is this identified.
This seems to be making emulation a requirment for ARM64 KVM. 


Thanks,
Tirumalesh. 
 

-Christoffer
_______________________________________________
kvmarm mailing list
kvmarm at lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm