From: Michal Novotny <minovotn@redhat.com>
To: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: xen-devel@lists.xensource.com
Subject: Re: [PATCH] Fix restore handling checks
Date: Wed, 23 Jun 2010 11:59:51 +0200 [thread overview]
Message-ID: <4C21DB17.3060800@redhat.com> (raw)
In-Reply-To: <b0eca5df-d715-41f4-b774-04f183293ac5@default>
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@redhat.com>, RHCE
Virtualization Team (xen userspace), Red Hat
next prev parent reply other threads:[~2010-06-23 9:59 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-21 16:30 [PATCH] Fix restore handling checks Michal Novotny
2010-06-21 18:04 ` Keir Fraser
2010-06-22 5:43 ` Michal Novotny
2010-06-22 6:11 ` Michal Novotny
2010-06-22 6:14 ` Keir Fraser
2010-06-22 6:17 ` Michal Novotny
2010-06-22 12:56 ` Michal Novotny
2010-06-22 14:10 ` Konrad Rzeszutek Wilk
2010-06-23 11:27 ` Michal Novotny
2010-06-22 20:46 ` Dan Magenheimer
2010-06-23 9:59 ` Michal Novotny [this message]
2010-06-23 11:21 ` Michal Novotny
2010-06-23 13:51 ` Dan Magenheimer
2010-06-23 14:14 ` Michal Novotny
2010-06-22 14:56 ` Ian Jackson
2010-06-23 11:19 ` Paolo Bonzini
2010-06-23 11:27 ` Ian Jackson
2010-06-23 11:29 ` Michal Novotny
2010-06-23 11:50 ` Ian Jackson
2010-06-23 11:54 ` Michal Novotny
2010-06-23 12:04 ` Ian Jackson
2010-06-23 12:10 ` Paolo Bonzini
2010-06-23 12:20 ` Michal Novotny
2010-06-23 12:20 ` Michal Novotny
2010-06-23 12:12 ` Michal Novotny
2010-06-23 12:33 ` Alan Cox
2010-06-23 15:12 ` George Dunlap
2010-06-23 16:26 ` Dan Magenheimer
2010-06-23 12:35 ` Alan Cox
2010-06-23 12:37 ` Michal Novotny
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