WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

RE: [Xen-devel] Re: [PATCH] Support swap a page from user space tools --

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>
Subject: RE: [Xen-devel] Re: [PATCH] Support swap a page from user space tools -- Was RE: [RFC][PATCH] Basic support for page offline
From: "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>
Date: Thu, 19 Mar 2009 22:42:27 +0800
Accept-language: en-US
Acceptlanguage: en-US
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Thu, 19 Mar 2009 07:45:08 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <C5E8090A.48B0%keir.fraser@xxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <E2263E4A5B2284449EEBD0AAB751098401C7EC0715@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> <C5E8090A.48B0%keir.fraser@xxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AcmodaxGpRh5muaRTCCma6vBJRy3NQAAdKadAAA4ExAAAMDH0QAFXe2AAAE9geEAAiC0AAAAdVtEAAAjjoA=
Thread-topic: [Xen-devel] Re: [PATCH] Support swap a page from user space tools -- Was RE: [RFC][PATCH] Basic support for page offline
xen-devel-bounces@xxxxxxxxxxxxxxxxxxx <> wrote:
> On 19/03/2009 14:26, "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx> wrote:
> 
>>> Well, why is the existing hypercall not okay by itself? Why can you not
>>> take an arbitrary new mfn and you feel you have to specify it from the
>>> tools instead?
>> 
>> It is ok for us to use an arbitrary new mfn, and then do the update_entry.
>> But what happen if this process failed and we want to turn back to the old
>> page? We still need this mechanism at that situation.
> 
> If what failed? The update_entry? How could that happen?

Per discussion before, when the page is granted to other domain, then after we 
update all entry, there will still have reference to left.

-- yhj

> 
> -- Keir
> 
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

<Prev in Thread] Current Thread [Next in Thread>