From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Tue, 4 Mar 2008 22:28:57 +0000 (-0800)
Subject: alpha: make IOMMU respect the segment boundary limits
X-Git-Tag: v2.6.25-rc4~53
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cf5401454863df8e6dc3ebe8faad09141cbec187;p=pandora-kernel.git

alpha: make IOMMU respect the segment boundary limits

This patch makes the IOMMU code not allocate a memory area spanning LLD's
segment boundary.

is_span_boundary() judges whether a memory area spans LLD's segment boundary.
If iommu_arena_find_pages() finds such a area, it tries to find the next
available memory area.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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