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Re: [Xen-devel] understanding __linear_l2_table and friends

To: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] understanding __linear_l2_table and friends
From: Gerd Knorr <kraxel@xxxxxxxxxxx>
Date: 20 Apr 2005 18:06:23 +0200
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Scott Parish <srparish@xxxxxxxxxx>
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Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> writes:

> They aren't actually used during domain building,

Used anywhere else?  Especially __linear_l2_table and
__linear_l3_table?

> Xen uses the common trick whereby each page directory maps
> itself. This means that every page-table entry is mapped into the
> address space at some virtual address.

Well, in PAE mode that trick doesn't fully work.  It will do fine for
the l1 tables, I think also for l2, but certainly not for l3 due to
address space constrains ...

  Gerd

-- 
#define printk(args...) fprintf(stderr, ## args)

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