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] Page access during migration

To: Mike Sun <msun@xxxxxxxxxx>
Subject: Re: [Xen-devel] Page access during migration
From: Anthony Nocentino <nocentino@xxxxxxxxx>
Date: Tue, 27 Jan 2009 18:50:14 -0600
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Tue, 27 Jan 2009 16:51:05 -0800
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:cc:message-id:from:to :in-reply-to:content-type:content-transfer-encoding:mime-version :subject:date:references:x-mailer; bh=xUayXfOVZ6yyBTE0Ilb8T1UfvuL+RSKYCNWr1uBvyCc=; b=UDBYzA9zeiQnJeyOjdXtc6Q8W68mqU7wx3zflbw9GKfaGz7M7Rx5qcoqgdEE0qAg15 qeOCJyf3jaqeQnHNcB52IIHQyHLj3KRGfyoD3WxXIN9QHBdHLnQmNh3dLEjyeclD3tWL NmYGERArDJMGYkx3rID6ZvbIxstR4mrWgnUgg=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=cc:message-id:from:to:in-reply-to:content-type :content-transfer-encoding:mime-version:subject:date:references :x-mailer; b=iqWdVHXXnpzK7v8KX82+o0Nvvp4EoM/7Kka6i/EPCTd7c+XAiNkHDo2IuIw7Z7DEVz B4ZkzaioLYexW9OdhWR8hqjqxC0ILDW1SrwJVSX1e4BoVxqWDaV6XRfWXDViimM6oGNC LrYnEb8PocOw2Usb+F0v3dh6OEaWY4UD8eAZ4=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <e4e579070901271448m4375acbala03973b115a437d9@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: <0E3FCDAA-CBDD-4689-A5DC-D755E00B7844@xxxxxxxxx> <e4e579070901271448m4375acbala03973b115a437d9@xxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Mike,   
Thanks for the reply, staring at the hypercalls in xen.h I didn't see anything that jumped right out at me. What I would like to do is take a peek at the flags in the page descriptor.

Are you referring to something like mapping foreign frames as mentioned in /xen-3.3.0/docs/misc/grant-tables.txt?

Thanks,
        anthony


On Jan 27, 2009, at 4:48 PM, Mike Sun wrote:

I'm investigating modifying the live migration process. During the live migration (xc_domain_save.c) is it possible to get a pointer to a guest's page descriptor (struct page)? If this is possible, could you please
describe the process.

You'd likely have to use a hypercall that could pass you mfn of the
the struct page you're looking for and then map that in.


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

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