Re: [Xen-devel] [PATCH] Fix restore handling checks

[Michal Novotny <minovotn@xxxxxxxxxx>]

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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