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

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Date:	Thu, 9 Oct 2008 15:35:51 -0600
From:	Matthew Wilcox <matthew@....cx>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Grant Grundler <grundler@...isc-linux.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH] pci: print out DMA mask info

On Thu, Oct 09, 2008 at 02:27:33PM -0700, Yinghai Lu wrote:
> >> aacraid 0000:86:00.0: using 32bit DMA mask
> >> aacraid 0000:86:00.0: using 32bit consistent DMA mask
> >> aacraid 0000:86:00.0: using 64bit DMA mask
> >> aacraid 0000:86:00.0: using 64bit consistent DMA mask
> 
> and aacraid do 32bit at first then 64bit...
> 
> so put that in boot message could be useful too.

Why's that interesting to the sysadmin of the machine?  To the driver
writer, certainly.  But what's the use of it to the people using the
machine?

-- 
Matthew Wilcox				Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours.  We can't possibly take such
a retrograde step."
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