linux-kernel - Re: [PATCH] quiet down swiotlb warnings

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Message-ID: <20070601201444.GK7217@one.firstfloor.org>
Date:	Fri, 1 Jun 2007 22:14:44 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Andrew Vasquez <andrew.vasquez@...gic.com>
Cc:	Andi Kleen <andi@...stfloor.org>, Rik van Riel <riel@...hat.com>,
	Christoph Hellwig <hch@...radead.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] quiet down swiotlb warnings

On Fri, Jun 01, 2007 at 01:00:49PM -0700, Andrew Vasquez wrote:
> yes, the card can support 64bit DMA transfers. but in this case the
> 'required' DMA mask returned from dma_get_required_mask() states that a
> 32bit mask would suffice.

That's a bug in the kernel then that needs to be fixed. Find out
why it does that and change it. Don't fix the symptoms, fix the root cause.

-Andi
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