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From: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
To: "Carl Holtje ;021;vcsg6;" <cwh0803@cs.rit.edu>
Cc: xen-devel@lists.xensource.com
Subject: Re: Breakage in -unstable for Transmeta
Date: Fri, 24 Jun 2005 17:15:05 +0100	[thread overview]
Message-ID: <50b68f3ddc1ff3db9893e0d7ad10b884@cl.cam.ac.uk> (raw)
In-Reply-To: <Pine.GSO.4.58.0506241153160.17433@queeg.cs.rit.edu>


On 24 Jun 2005, at 16:57, Carl Holtje ;021;vcsg6; wrote:

> Is the initial page table creation code in xen/include/asm/page.h?
>
> Thanks!

No, it's this piece of code in x86_32.S (which I've pasted from latest 
xen-unstable, but I think is identical to the code in 2.0.6):

         /* Initialize low and high mappings of all memory with 4MB 
pages */
         mov     $idle_pg_table-__PAGE_OFFSET,%edi
         mov     $0xe3,%eax                  /* PRESENT+RW+A+D+4MB */
1:      mov     %eax,__PAGE_OFFSET>>20(%edi) /* high mapping */
         stosl                                /* low mapping */
         add     $(1<<L2_PAGETABLE_SHIFT),%eax
         cmp     $DIRECTMAP_PHYS_END+0xe3,%eax
         jne     1b
1:      stosl   /* low mappings cover as much physmem as possible */
         add     $(1<<L2_PAGETABLE_SHIFT),%eax
         cmp     $__HYPERVISOR_VIRT_START+0xe3,%eax
         jne     1b

  -- Keir

  reply	other threads:[~2005-06-24 16:15 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-06-22 18:50 Breakage in -unstable for Transmeta Carl Holtje ;021;vcsg6;
2005-06-23 10:22 ` Keir Fraser
2005-06-23 20:45   ` Carl Holtje ;021;vcsg6;
2005-06-23 22:18     ` Keir Fraser
2005-06-24  0:23       ` Carl Holtje ;021;vcsg6;
2005-06-24  9:33         ` Keir Fraser
2005-06-24 13:30           ` Carl Holtje ;021;vcsg6;
2005-06-24 13:55             ` Keir Fraser
2005-06-24 15:57               ` Carl Holtje ;021;vcsg6;
2005-06-24 16:15                 ` Keir Fraser [this message]
2005-06-24 19:22                   ` Breakage in -unstable for Transmeta -- Solution Carl Holtje ;021;vcsg6;
2005-06-24 20:33                     ` Keir Fraser
2005-06-25  1:57                       ` Carl Holtje ;021;vcsg6;
2005-06-25  9:21                         ` Keir Fraser
2005-06-27 15:55                           ` Carl Holtje ;021;vcsg6;

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