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xen-devel
Re: [Xen-devel] [PATCH] Fix restore handling checks
On 06/22/2010 10:46 PM, Dan Magenheimer wrote:
Correct me if I am wrong, but I think your patch assumes
that the amount of free memory in the system can be
computed by assuming each guest memory is fixed size.
Due to various features in Xen 4.0, this is no longer
a safe assumption. Tmem has a libxc call to freeze
and unfreeze its use of memory so dynamic memory use
by tmem can be stopped, and another libxc call to
determine "freeable" memory, and another to free it.
I don't know if the page-sharing functionality added
at 4.0 has anything similar.
Honestly I don't know about how tmem features work since I have them
disabled because I'm unable to start any guest with them enabled because
it fails on creation.
Michal
--
Michal Novotny<minovotn@xxxxxxxxxx>, RHCE
Virtualization Team (xen userspace), Red Hat
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