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] Shadow Page Tables for PV Guest

To: zhujun <zhujun@xxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Shadow Page Tables for PV Guest
From: Gianluca Guida <gianluca.guida@xxxxxxxxxxxxx>
Date: Sun, 21 Jun 2009 15:27:55 +0200
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Sun, 21 Jun 2009 06:28:22 -0700
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to:cc :content-type:content-transfer-encoding; bh=qHFstKZRtR0BlHxlC2STXdC273psOoFqR+pMMiy97GM=; b=ekBBmfgDVkkFynmLg/gMW5yZuWI9Ja33CzaCsfEEnGR0n8uxUDTRh4AsZrUhYImcNb wqis2xHbjYFAt0/nRs+wN4+bb/xNMzuQQSv8E2QnBq7d9Jv+K3sGSoPJx9XWpmC4xA8g L6BJkquDT1ItWJPT0YiZK1wAJ9vca4nLAfcY8=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=Q1isjC90QRWokZaqPC19Ml1QQrSyRWl+5fhCeCT4pX51S2tB6TmkdqdEDvEVjeojLC 8uT6+l1e7xbygC3jTU0n2P0Y50FyCz9FPir6m1bidF+OsW6NaJ+22i+JFATbsBPDGbjB ELlYfiMEbE8sZzrViawuyEcYzLfVrGZ5P90l0=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <00b401c9f1a5$4b777e70$e2667b50$@pku.edu.cn>
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: <00b401c9f1a5$4b777e70$e2667b50$@pku.edu.cn>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
On Sat, Jun 20, 2009 at 2:47 PM, zhujun<zhujun@xxxxxxxxxxxxxx> wrote:
>          Does shadow page table uses oos optimization for PV guest? In the
> sh_unsync() function, it is only hvm that can put a L1 page table into oos
> list. Why?

The OOS was meant as a HVM optimization (in the specific targeting
Windows guest). Shadow pagetables are currently used by PV guests only
for live migration, and in that context the OOS would just be an
unneeded complexity.

Gianluca

-- 
It was a type of people I did not know, I found them very strange and
they did not inspire confidence at all. Later I learned that I had been
introduced to electronic engineers.
                                                  E. W. Dijkstra

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

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