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

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Message-ID: <20130621151459.GK11309@8bytes.org>
Date:	Fri, 21 Jun 2013 17:15:00 +0200
From:	Joerg Roedel <joro@...tes.org>
To:	suravee.suthikulpanit@....com
Cc:	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 Wed, May 22, 2013 at 02:15:52PM -0500, Suthikulpanit, Suravee wrote:
> From: Suravee Suthikulpanit <suravee.suthikulpanit@....com>
> 
> This patch set implements framework for handling errors reported via IOMMU 
> event log. It also implements mechanism to filter/suppress error messages when 
> IOMMU hardware generates large amount event logs, which is often caused by 
> devices performing invalid operations or from misconfiguring IOMMU hardware 
> (e.g. IO_PAGE_FAULT and INVALID_DEVICE_QEQUEST").

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.

An exception is of course still the flags decoding in this patch-set.
This alone would be pretty compelling as long as there is no integration
into EDAC.


	Joerg


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