From: Chris Metcalf <cmetcalf@tilera.com>
Date: Mon, 12 Aug 2013 19:08:09 +0000 (-0400)
Subject: tile: add virt_to_kpte() API and clean up and document behavior
X-Git-Tag: v3.12-rc1~120^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=640710a33b54de8d90ae140ef633ed0feba76a75;p=pandora-kernel.git

tile: add virt_to_kpte() API and clean up and document behavior

We use virt_to_pte(NULL, va) a lot, which isn't very obvious.
I added virt_to_kpte(va) as a more obvious wrapper function,
that also validates the va as being a kernel adddress.

And, I fixed the semantics of virt_to_pte() so that we handle
the pud and pmd the same way, and we now document the fact that
we handle the final pte level differently.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
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