From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Thu, 12 Jul 2012 17:55:25 +0000 (-0400)
Subject: xen/mmu: Provide comments describing the _ka and _va aliasing issue
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~30^2~9^2~9
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4fac153a7a260e40e10008a0d7a272719684e4cd;p=pandora-kernel.git

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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