linux-kernel - Re: [PATCH 0/3] iommu/amd: IOMMU Error Reporting/Handling/Filtering

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Date:	Fri, 21 Jun 2013 18:24:55 +0200
From:	Joerg Roedel <joro@...tes.org>
To:	Borislav Petkov <bp@...en8.de>
Cc:	suravee.suthikulpanit@....com, iommu@...ts.linux-foundation.org,
	ddutile@...hat.com, alex.williamson@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] iommu/amd: IOMMU Error Reporting/Handling/Filtering

On Fri, Jun 21, 2013 at 05:59:33PM +0200, Borislav Petkov wrote:
> On Fri, Jun 21, 2013 at 05:15:00PM +0200, Joerg Roedel wrote:
> > Instead of extending this bad scaling dmesg error-reporting mechanism,
> > I would very much like to see an integration of IOMMU error handling
> > into the EDAC framework.
> 
> Wouldn't just adding a tracepoint and collecting the logs in debugfs be
> enough? This would at least avoid spamming syslog with the messages.

I would rather not create another user-space interface for this which we
then have to keep forever because someone started using it. What we need
is a well defined mechanism to report these kernel metrics to userspace
which can then do with it whatever it wants. I think EDAC can provide
that interface.


	Joerg


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