linux-kernel - Re: AMD Quad core - PCI-DMA: Out of IOMMU space on

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Message-ID: <20090317074501.GQ2125@8bytes.org>
Date:	Tue, 17 Mar 2009 08:45:02 +0100
From:	Joerg Roedel <joro@...tes.org>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc:	mcgrof@...il.com, iommu@...ts.linux-foundation.org,
	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: AMD Quad core - PCI-DMA: Out of IOMMU space on > 4 GB RAM

On Tue, Mar 17, 2009 at 09:35:45AM +0900, FUJITA Tomonori wrote:
> From a quick look, ath9k doesn't call pci_unmap_single for rx
> buffers. Though I might be wrong because I don't know anything about
> the driver.

In any case. This error description sounds very much like a dma memory
leak on module unload. So its very likely a driver issue.

Joerg

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