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] event TRC_MEM_PAGE_GRANT_TRANSFER

To: Rob Gardner <rob.gardner@xxxxxx>, Keir Fraser <keir@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] event TRC_MEM_PAGE_GRANT_TRANSFER
From: Keir Fraser <keir@xxxxxxxxxxxxx>
Date: Wed, 24 Jan 2007 10:01:23 +0000
Cc: Cesar Fernandes <darkvib@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Wed, 24 Jan 2007 02:06:22 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <45B66280.2070604@xxxxxx>
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
Thread-index: Acc/nppV2M/8j6uREduptAAX8io7RQ==
Thread-topic: [Xen-devel] event TRC_MEM_PAGE_GRANT_TRANSFER
User-agent: Microsoft-Entourage/11.2.5.060620


On 23/1/07 19:31, "Rob Gardner" <rob.gardner@xxxxxx> wrote:

>> 
>> Grant transfers are no longer used to move network data from netback to
>> netfront (except for backward compatibility with old netfront drivers).
> 
> 
> Yeah, got that. ;)  Could you explain what mechanisms are currently used
> to move data for net I/O and disk I/O between domains, and in
> particular, can you suggest where in the code I could put trace calls to
> be able to count I/O's? Thanks.

Everything is done via grant-map/unmap commands as it always was, except
network receive (netback->netfront) which is done via grant-copy commands
(one per contiguous fragment of network packet).

 -- Keir


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

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