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>

[Xen-devel] Re: [Xen-changelog] Indirect hypercalls through a hypercall

from [Keir Fraser] [Permanent Link][Original]
To: Hollis Blanchard <hollisb@xxxxxxxxxx>
Subject: [Xen-devel] Re: [Xen-changelog] Indirect hypercalls through a hypercall transfer page.
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Wed, 8 Feb 2006 08:46:13 +0000
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Wed, 08 Feb 2006 08:58:13 +0000
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <1139374660.11984.30.camel@xxxxxxxxxxxxxxxxxxxxx>
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>
References: <E1F1lA0-0001fQ-Mv@xxxxxxxxxxxxxxxxxxxxx> <1139374660.11984.30.camel@xxxxxxxxxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 

On 8 Feb 2006, at 04:57, Hollis Blanchard wrote:


Indirect hypercalls through a hypercall transfer page.


Sorry, I may have missed some conversation about this...
What is this patch about? I mean I can see how it works, but what is the 
motivation for it?
Allows a different hypercall implementation on platforms where that makes sense. For example, we would like to run XenLinux on native by running it over a small 'Xen shim' that provides the Xen API but no protection or multiplexing. In that case it would be most efficient to turn syscall instructions into jumps. 

 -- Keir


_______________________________________________
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:  [Xen-devel] [PATCH] direct_remap_pfn_range vm_flags fix, Chris Wright
Next by Date:  [Xen-devel] consoleio_read in domU, nicowisamu
Previous by Thread:  [Xen-devel] Re: [Xen-changelog] Indirect hypercalls through a hypercall transfer page., Hollis Blanchard
Next by Thread:  Re: [Xen-devel] Re: [Xen-changelog] Indirect hypercalls through a hypercall transfer page., Anthony Liguori
Indexes:  [Date] [Thread] [Top] [All Lists]
 
   

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