xen-devel

[Top] [All Lists]

[Xen-devel] [PATCH] Fix races in iret hypercall

from [Christoph Egger]

[Permanent Link][Original]

To:	xen-devel@xxxxxxxxxxxxxxxxxxx
Subject:	[Xen-devel] [PATCH] Fix races in iret hypercall
From:	"Christoph Egger" <Christoph.Egger@xxxxxxx>
Date:	Thu, 9 Aug 2007 10:35:08 +0200
Delivery-date:	Thu, 09 Aug 2007 01:33:42 -0700
Envelope-to:	www-data@xxxxxxxxxxxxxxxxxx
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/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe:	<http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender:	xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent:	KMail/1.9.6

Hi!

Attached patch fixes races seen on SMP when multiple HVM guests
execute the iret instruction at the same time.

current vcpu can change in the middle of do_iret().

Signed-off-by: Christoph Egger <Christoph.Egger@xxxxxxx>



-- 
AMD Saxony, Dresden, Germany
Operating System Research Center

Legal Information:
AMD Saxony Limited Liability Company & Co. KG
Sitz (Geschäftsanschrift):
   Wilschdorfer Landstr. 101, 01109 Dresden, Deutschland
Registergericht Dresden: HRA 4896
vertretungsberechtigter Komplementär:
   AMD Saxony LLC (Sitz Wilmington, Delaware, USA)
Geschäftsführer der AMD Saxony LLC:
   Dr. Hans-R. Deppe, Thomas McCoy

iret_race.diff
Description: Text Data

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

[More with this subject...]

<Prev in Thread]	Current Thread	[Next in Thread>
[Xen-devel] [PATCH] Fix races in iret hypercall, Christoph Egger <= Re: [Xen-devel] [PATCH] Fix races in iret hypercall, Keir Fraser

Previous by Date:	[Xen-devel] [PATCH] Make XEN_DOMCTL_destroydomain hypercall return error, Isaku Yamahata
Next by Date:	[Xen-devel] Insert vnif driver failed in 32bit PAE HVM Guest., You, Yongkang
Previous by Thread:	[Xen-devel] [PATCH] Make XEN_DOMCTL_destroydomain hypercall return error, Isaku Yamahata
Next by Thread:	Re: [Xen-devel] [PATCH] Fix races in iret hypercall, Keir Fraser
Indexes:	[Date] [Thread] [Top] [All Lists]