 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] Re: [PATCH]Add a flag for shadow pages
| To: | "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>, Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Re: [PATCH]Add a flag for shadow pages |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Wed, 04 Mar 2009 14:30:10 +0000 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Wed, 04 Mar 2009 06:30:38 -0800 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| In-reply-to: | <C5D41D1B.3BD5%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> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | AcmcpbnsO+Hd65wBRsq7KCOjKnHUNQAAtTT+AAANk1AAAH+w/wAABzXgAAEnI6UABDe9jwAFVy8O |
| Thread-topic: | [Xen-devel] Re: [PATCH]Add a flag for shadow pages |
| User-agent: | Microsoft-Entourage/12.15.0.081119 |
On 04/03/2009 11:57, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> wrote: > On 04/03/2009 09:56, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> wrote: > >> Another would be to create a new function page_get_reference_and_owner() >> which obtains a reference on a guest page and *returns* the (now known >> valid) domain pointer. Probably this is nicer actually. Then all existing >> users of page_get_owner() need checking to ensure they don't need to use the >> new more expensive function -- I think some are probably actually unsafe now >> that shadow pages clobber the domain field. > > I'm working on this by the way. I'll clean up everything except shadow uses > of page_get_owner(). Changeset 19268. See get_page_from_l1e() for an example safe usage of new page_get_owner_and_reference() function. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| Previous by Date: | [Xen-devel] HVM, Suraj B |
|---|---|
| Next by Date: | Re: [Xen-users] I want to share some string between two guest domains .Is there a way to do that?, weiming |
| Previous by Thread: | Re: [Xen-devel] Re: [PATCH]Add a flag for shadow pages, Keir Fraser |
| Next by Thread: | RE: [Xen-devel] Re: [PATCH]Add a flag for shadow pages, Jiang, Yunhong |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
