linux-kernel - Re: [PATCH] pci: print out DMA mask info

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Message-ID: <20081012072049.GC20056@colo.lackof.org>
Date:	Sun, 12 Oct 2008 01:20:49 -0600
From:	Grant Grundler <grundler@...isc-linux.org>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
Cc:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	grundler@...isc-linux.org, yinghai@...nel.org, mingo@...e.hu,
	tglx@...utronix.de, hpa@...or.com, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH] pci: print out DMA mask info

On Fri, Oct 10, 2008 at 08:48:08AM -0700, Jesse Barnes wrote:
...
> Another option would be to add a 'warn_dma_mask=0xxxxxxxxx' boot option that 
> would trigger in the actual DMA mask setting routines.  It would let you 
> choose the mask you'd like to see warnings about.  Yinghai?

No, please don't. We have too many command line options already.

Dumping dma_mask and dma_consistent_mask from /sys is not hard.
I'd prefer Yinghai get credit for doing this since he's raised the issue
and took the time to submit a patch.

thanks,
grant
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