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Date: Sat, 25 Jun 2005 21:43:27 -0700 (PDT)
Message-Id: <20050625.214327.41187346.davem@davemloft.net>
To: mvolaski@aecom.yu.edu
Cc: linux-kernel@vger.kernel.org
Subject: Re: [Q] What is the significance of the "Out of IOMMU Space" error?
From: "David S. Miller" <davem@davemloft.net>
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From: Maurice Volaski <mvolaski@aecom.yu.edu>
Date: Sun, 26 Jun 2005 00:37:08 -0400

> This error doesn't seem to be mentioned much in this space. Should it 
> be taken at face value? Is it something simple like IOMMU should be 
> set to a higher value in the HDAMA bios? A kernel bug? Or could it 
> actually be bad physical memory or even a bad card?

It could be a DMA mapping leak in some kernel driver.
Or it could be that there is more DMA in flight than
the IOMMU space available can hold.