xen-devel

[Top] [All Lists]

Re: [Xen-devel] How to write protect a HVM guest page and handle the wri

from [Tim Deegan]

[Permanent Link][Original]

To:	veerasena reddy <veeruyours@xxxxxxxxx>
Subject:	Re: [Xen-devel] How to write protect a HVM guest page and handle the writes to the page in hypervisor
From:	Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Date:	Tue, 7 Jun 2011 09:54:17 +0100
Cc:	xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date:	Tue, 07 Jun 2011 01:54:58 -0700
Envelope-to:	www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to:	<BANLkTimNn1ZO3pK9rQi3zeBt6epnws_1kQ@xxxxxxxxxxxxxx>
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:	<BANLkTimNn1ZO3pK9rQi3zeBt6epnws_1kQ@xxxxxxxxxxxxxx>
Sender:	xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent:	Mutt/1.5.21 (2010-09-15)

Hi, 

Please read http://wiki.xensource.com/xenwiki/AskingXenDevelQuestions .

At 12:08 +0530 on 07 Jun (1307448516), veerasena reddy wrote:
> In one of requirements for my experiment, i need to
> 1. write protect a HVM guest page (the GPA of it is passed to hypervisor in
> a different hypercall)
> 2. write a function in XEN hypervisor and register this as handler for the
> page protected above.
> 
> Could you please advice, how to achieve (2).

Look at the mem_event code in current xen-unstable.  It allows you to do
this from a handler in dom0; I'm sure it would be easy to intercept and
handle inside Xen if you really need to. .

Tim.

-- 
Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Principal Software Engineer, Xen Platform Team
Citrix Systems UK Ltd.  (Company #02937203, SL9 0BG)

_______________________________________________
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] How to write protect a HVM guest page and handle the writes to the page in hypervisor, veerasena reddy Re: [Xen-devel] How to write protect a HVM guest page and handle the writes to the page in hypervisor, Tim Deegan <=

Previous by Date:	Re: [Xen-devel] Framework for libxl interfacing with qemu monitor, Ian Campbell
Next by Date:	[Xen-devel] Re: [PATCH] libxl, Introduce a QMP client, Ian Campbell
Previous by Thread:	[Xen-devel] How to write protect a HVM guest page and handle the writes to the page in hypervisor, veerasena reddy
Next by Thread:	[Xen-devel] [PATCH] libxl: use '-name' instead of deprecated '-domain-name' for device model, Wei Liu
Indexes:	[Date] [Thread] [Top] [All Lists]