From 4fac153a7a260e40e10008a0d7a272719684e4cd Mon Sep 17 00:00:00 2001
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Thu, 12 Jul 2012 13:55:25 -0400
Subject: [PATCH] xen/mmu: Provide comments describing the _ka and _va aliasing
 issue

Which is that the level2_kernel_pgt (__ka virtual addresses)
and level2_ident_pgt (__va virtual address) contain the same
PMD entries. So if you modify a PTE in __ka, it will be reflected
in __va (and vice-versa).

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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