linux-kernel - Re: [ 102/127] iommu/amd: Workaround for ERBT1312

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Message-ID: <51CE768C.3030102@01019freenet.de>
Date:	Sat, 29 Jun 2013 07:54:20 +0200
From:	Andreas Hartmann <andihartmann@...19freenet.de>
To:	Joerg Roedel <joro@...tes.org>,
	Alex Williamson <alex.williamson@...hat.com>
CC:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [ 102/127] iommu/amd: Workaround for ERBT1312

Joerg Roedel wrote:
> Alex, Andreas,
> 
> On Fri, Jun 28, 2013 at 08:42:05PM +0200, Andreas Hartmann wrote:
>> You're right, there is exactly one entry directly after loading of vfio.
>> I can see this message, too, with linux 3.4.43.
> 
> Can you please test this patch? It should reduce the noise
> significantly, but a few of those error messages are still expected.

Sorry, but it doesn't work for me at all :-(. Behaviour is unchanged. It
is exactly as described in the other mail: at the moment of binding vfio
to 14.0, the fire begins.

echo "1002 4385" > /sys/bus/pci/drivers/vfio-pci/new_id
echo 0000:00:14.0 > /sys/bus/pci/devices/0000:00:14.0/driver/unbind
echo 0000:00:14.0 > /sys/bus/pci/drivers/vfio-pci/bind


Regards,
Andreas
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