how to get PFN of page cache in guest OS?

[Valdis.Kletnieks at vt.edu]

On Fri, 21 Mar 2014 16:40:10 +0530, pravin jadav said:

> instead of migrating page cache at remote host, pagecache restore from the
> disk storage before VM resume at remote host.

This will be.. .problematic.  The problem is that to do this well,
you really need 2 or more hypervisor hosts that both have access to the
same storage.  Which means you'll have (basically) find a way to make 2
or more systems share the same swap space.
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