From: Pekka Paalanen <pq@iki.fi>
Date: Sun, 1 Mar 2009 14:10:08 +0000 (+0200)
Subject: x86: add far read test to testmmiotrace
X-Git-Tag: v2.6.29-rc7~4^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5ff93697fcfe1e2b9e61db82961d8f50d1ad5d57;p=pandora-kernel.git

x86: add far read test to testmmiotrace

Apparently pages far into an ioremapped region might not actually be
mapped during ioremap(). Add an optional read test to try to trigger a
multiply faulting MMIO access. Also add more messages to the kernel log
to help debugging.

This patch is based on a patch suggested by
Stuart Bennett <stuart@freedesktop.org>
who discovered bugs in mmiotrace related to normal kernel space faults.

Signed-off-by: Pekka Paalanen <pq@iki.fi>
Cc: Stuart Bennett <stuart@freedesktop.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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