From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: treatment grant frames during save/restore Date: Thu, 27 May 2010 16:37:34 +0100 Message-ID: <4BFEADDE0200007800004455@vpn.id2.novell.com> References: <4BFEAB750200007800004444@vpn.id2.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <4BFEAB750200007800004444@vpn.id2.novell.com> Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org >>> On 27.05.10 at 17:27, "Jan Beulich" wrote: > From what I can tell, grant frames get no special treatment by the tools > during save, and hence get treated as normal memory during restore. > If that's correct, it would seem that there's an accounting issue, since > during restore a normal RAM page will be allocated by the tools for each > grant frame, hence a domain that prior to save was below its limit > could now end up crossing that limit, and thus unexpectedly fail to > restore. If that's not a possibility, what am I missing? Ooops, just noticed that I didn't say explicitly that this is for HVM guests. Thanks, Jan