From: Gary Hade <garyhade@us.ibm.com>
Date: Mon, 14 Nov 2011 23:42:16 +0000 (-0800)
Subject: x86/PCI: Ignore CPU non-addressable _CRS reserved memory resources
X-Git-Tag: v3.2.2~97
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=11d4681a71b98cf0b07521ea50168476b1194e7b;p=pandora-kernel.git

x86/PCI: Ignore CPU non-addressable _CRS reserved memory resources

commit ae5cd86455381282ece162966183d3f208c6fad7 upstream.

This assures that a _CRS reserved host bridge window or window region is
not used if it is not addressable by the CPU.  The new code either trims
the window to exclude the non-addressable portion or totally ignores the
window if the entire window is non-addressable.

The current code has been shown to be problematic with 32-bit non-PAE
kernels on systems where _CRS reserves resources above 4GB.

Signed-off-by: Gary Hade <garyhade@us.ibm.com>
Reviewed-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Thomas Renninger <trenn@novell.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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