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Message-ID: <20100810202839.GS23755@8bytes.org>
Date:	Tue, 10 Aug 2010 22:28:39 +0200
From:	Joerg Roedel <joro@...tes.org>
To:	Sander Eikelenboom <linux@...elenboom.it>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [2.6.35] AMD-Vi: Enabling IOMMU at 0000:00:00.2 cap 0x40  BUG:
	unable to handle kernel NULL pointer dereference at 0000000000000198

On Tue, Aug 10, 2010 at 08:05:14PM +0200, Sander Eikelenboom wrote:
> Could you also provide a perhaps more specific message what is wrong
> with the bios, that i could forward to MSI, in the hope it will reach
> the bios engineers someday ? :-)

Lets first prove that my theory is right before contacting MSI directly.
Can you try the attached patch? it should fix the boot-crash. When the
system booted successfully please try some USB device (make sure it uses
the seperate usb-controler, I guess the seperate device is responsible
for USB 3, so try to plug a device into one of your USB 3 ports).
If you finished that please send me whether it worked or not and the
full dmesg output of the system.

	Joerg


View attachment "iommu-crash-fix.diff" of type "text/x-diff" (416 bytes)

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