From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keir Fraser Subject: Re: Re: [PATCH] Support swap a page from user spacetools -- Was RE: [RFC][PATCH] Basic support for page offline Date: Fri, 20 Mar 2009 09:58:10 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: "Jiang, Yunhong" , Jan Beulich Cc: Tim Deegan , "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org On 20/03/2009 09:52, "Jiang, Yunhong" wrote: >> Since the guest is suspended, would that matter? Any I/Os that were in >> flight on suspend will get resubmitted on resume. So the >> potential races >> might all be benign. > > I think it may not be resubmited. Backend may have no idea at all if the guest > is resume quickly, I remember. Or maybe I miss understand the interface > between backend/frontend.. Ah, you do a suspend-cancel/fast-resume? -- Keir