Re: [Xen-devel] [PATCH v8 3/5] xen/mem_sharing: VM forking

[Tamas K Lengyel <tamas@xxxxxxxxxxxxx>]

> One question needing considering is whether such a hypercall could in
> theory be useful without the mem_sharing infrastructure, or not.  (i.e.
> how tightly integrated we should aim for.)

It would be possible to create domain forks without mem_sharing. The
mem_sharing part just adds an extra optimization on top so we don't
end up copying all accessed pages needlessly, we only do that when the
page is written to. In one of the earlier revisions of the series
(~v4) due to a bug we actually ran the system with all pages being
deduplicated and no mem_sharing and it was working just fine. I'm not
sure if that's what you were asking though :)

Tamas

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel