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] Re: [PATCH 00 of 36] x86/paravirt: groundwork for 64-bit

To: Andi Kleen <andi@xxxxxxxxxxxxxx>, Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Re: [PATCH 00 of 36] x86/paravirt: groundwork for 64-bit Xen support
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Wed, 25 Jun 2008 19:45:36 +0100
Cc: Mark McLoughlin <markmc@xxxxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Stephen Tweedie <sct@xxxxxxxxxx>, Eduardo Habkost <ehabkost@xxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>
Delivery-date: Wed, 25 Jun 2008 11:46:13 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <87skv1r8ln.fsf@xxxxxxxxxxxxxxxxx>
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: AcjW86fC5gcDXELmEd2ISwAX8io7RQ==
Thread-topic: [Xen-devel] Re: [PATCH 00 of 36] x86/paravirt: groundwork for 64-bit Xen support
User-agent: Microsoft-Entourage/11.4.0.080122
On 25/6/08 13:40, "Andi Kleen" <andi@xxxxxxxxxxxxxx> wrote:

>> to 0xffff880000000000.  I have no general justification for this: th
> 
> This will significantly decrease the maximum amount of physical
> memory supported by Linux longer term.

What does Linux expect to scale up to? Reserving 16 PML4 entries leaves the
kernel with 120TB of available 'negative' address space. Should be plenty, I
would think.

 -- Keir



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