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: Never mind Re: [Xen-devel] Re: Xen reboots when trying to start new

To: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Subject: Re: Never mind Re: [Xen-devel] Re: Xen reboots when trying to start new domain
From: Kip Macy <kmacy@xxxxxxxxxxxxxxx>
Date: Thu, 9 Sep 2004 17:41:10 -0700 (PDT)
Cc: Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxxx
Delivery-date: Fri, 10 Sep 2004 01:59:59 +0100
Envelope-to: steven.hand@xxxxxxxxxxxx
In-reply-to: <E1C5ZIT-0008Ok-00@xxxxxxxxxxxxxxxxx>
List-archive: <http://sourceforge.net/mailarchive/forum.php?forum=xen-devel>
List-help: <mailto:xen-devel-request@lists.sourceforge.net?subject=help>
List-id: List for Xen developers <xen-devel.lists.sourceforge.net>
List-post: <mailto:xen-devel@lists.sourceforge.net>
List-subscribe: <https://lists.sourceforge.net/lists/listinfo/xen-devel>, <mailto:xen-devel-request@lists.sourceforge.net?subject=subscribe>
List-unsubscribe: <https://lists.sourceforge.net/lists/listinfo/xen-devel>, <mailto:xen-devel-request@lists.sourceforge.net?subject=unsubscribe>
References: <E1C5ZIT-0008Ok-00@xxxxxxxxxxxxxxxxx>
Sender: xen-devel-admin@xxxxxxxxxxxxxxxxxxxxx
I don't know off hand where it goes away, but this is the comment from
the native locore.s:

/* install a pde for temporary double map of bottom of VA */
        movl    R(KPTphys), %eax
        xorl    %ebx, %ebx
        movl    $NKPT, %ecx
        fillkpt(R(IdlePTD), $PG_RW)

So, odds are it can be g/c'd as soon as pmap_init is run if not earlier.


                        -Kip



On Fri, 10 Sep 2004, Keir Fraser wrote:

> > I just burned an extra page so I'm not aliasing the page table - so now
> > it comes up.
> >
> >
> >                                     -Kip
> >
>
> Excellent! I'd encourage you to continue to avoid the aliasing, as it
> may lead to performance degradation in the future. Once you're up can
> you kill the low mappings and free the extra page?
>
>  -- Keir
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170
> Project Admins to receive an Apple iPod Mini FREE for your judgement on
> who ports your project to Linux PPC the best. Sponsored by IBM.
> Deadline: Sept. 13. Go here: http://sf.net/ppc_contest.php
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxxxx
> https://lists.sourceforge.net/lists/listinfo/xen-devel
>


-------------------------------------------------------
This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170
Project Admins to receive an Apple iPod Mini FREE for your judgement on
who ports your project to Linux PPC the best. Sponsored by IBM. 
Deadline: Sept. 13. Go here: http://sf.net/ppc_contest.php
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/xen-devel