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Date: Fri, 1 Jun 2007 22:14:44 +0200
From: Andi Kleen <andi@firstfloor.org>
To: Andrew Vasquez <andrew.vasquez@qlogic.com>
Cc: Andi Kleen <andi@firstfloor.org>, Rik van Riel <riel@redhat.com>,
       Christoph Hellwig <hch@infradead.org>,
       linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] quiet down swiotlb warnings
Message-ID: <20070601201444.GK7217@one.firstfloor.org>
References: <466057B1.9090309@redhat.com> <p73odjzbism.fsf@bingen.suse.de> <20070601181225.GA16460@infradead.org> <20070601193703.GI7217@one.firstfloor.org> <466075D1.8080807@redhat.com> <20070601194734.GJ7217@one.firstfloor.org> <20070601200049.GK12143@andrew-vasquezs-computer.local>
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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