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

[Top] [All Lists]
<prev [Date] next>
[Advanced]
 <prev [Thread] next>

Re: [Xen-devel] PCI BAR register space written with garbage in HVM guest

from [Jan Beulich] [Permanent Link][Original]
To: "Dan Gora" <dan.gora@xxxxxxxxx>, "Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx>
Subject: Re: [Xen-devel] PCI BAR register space written with garbage in HVM guest.
From: "Jan Beulich" <JBeulich@xxxxxxxxxx>
Date: Tue, 16 Mar 2010 15:54:34 +0000
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Tue, 16 Mar 2010 08:55:08 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <20100316152040.GA28821@xxxxxxxxxxxxxxxxxxx>
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: <4779de451003151809n6cec813dp32d77fee34b1bda2@xxxxxxxxxxxxxx> <20100316014851.GE7622@xxxxxxxxxxxxxxxxxxx> <4779de451003151955v15863656i5f39a631a8c558ee@xxxxxxxxxxxxxx> <20100316152040.GA28821@xxxxxxxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
>>> Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> 16.03.10 16:20 >>>
>The Hypervisor gets "trapped" when an outb is made (look for
>emulate_privileged_op function and specifically out).

No, that's only the path taken for pv guests. HVM guests use special
exit events for trapping I/O instructions.

Jan


_______________________________________________
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>
Previous by Date:  Re: [Xen-devel] xen balloon issue?, Jan Beulich
Next by Date:  RE: [Xen-devel] xen balloon issue?, Robbie Garertt
Previous by Thread:  Re: [Xen-devel] PCI BAR register space written with garbage in HVM guest., Konrad Rzeszutek Wilk
Next by Thread:  Re: [Xen-devel] PCI BAR register space written with garbage in HVM guest., Jan Beulich
Indexes:  [Date] [Thread] [Top] [All Lists]
 
   

Copyright , Citrix Systems Inc. All rights reserved. Legal and Privacy