linux-kernel - Re: PCI-DMA: Disabling IOMMU

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Message-Id: <1161259688.17335.32.camel@localhost.localdomain>
Date:	Thu, 19 Oct 2006 13:08:08 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Andi Kleen <ak@...e.de>
Cc:	Muli Ben-Yehuda <muli@...ibm.com>,
	Sebastian Biallas <sb@...llas.net>,
	linux-kernel@...r.kernel.org
Subject: Re: PCI-DMA: Disabling IOMMU

Ar Mer, 2006-10-18 am 23:48 +0200, ysgrifennodd Andi Kleen:
> On Wednesday 18 October 2006 23:15, Muli Ben-Yehuda wrote:
> > On Wed, Oct 18, 2006 at 05:03:36PM +0200, Sebastian Biallas wrote:
> > 
> > > Should I worry about this IOMMU-disabling? All other Linux/IOMMU stuff I
> > > found had AGP or BIOS messages nearby, but I only get this single
> > > "PCI-DMA: Disabling IOMMU" line, without any hint.
> > 
> > No, it's fine. Just a badly worded information message. Andi, how
> > about something like this?
> 
> I think the original message is fine. I'm sure someone will be alarmed
> about any possible message, but we can't help them.

Actually if you flip it around and print
"PCI-DMA: Enabling IOMMU"

and keep quiet if you disable it then users should be happy because its
turned something on and that is clearly always good 8)


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