linux-kernel - Re: Calgary and bad_dma

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Message-Id: <20080909215713.7ef0cfc4.zaitcev@redhat.com>
Date:	Tue, 9 Sep 2008 21:57:13 -0600
From:	Pete Zaitcev <zaitcev@...hat.com>
To:	David Miller <davem@...emloft.net>
Cc:	jdmason@...zu.us, muli@...ibm.com, linux-kernel@...r.kernel.org
Subject: Re: Calgary and bad_dma_address

On Tue, 09 Sep 2008 20:37:28 -0700 (PDT), David Miller <davem@...emloft.net> wrote:

> > I was reading arch/x86/kernel/pci-calgary_64.c today, and noticed that
> > apparently nothing prevents iommu_area_alloc from returning a zero.
> > But bad_dma_address is zero too. Doesn't it concern anyone?

> Won't the device range reserves done by calls of calgary_reserve_mem_region()
> take care of this?

Sorry, my mistake. Indeed it does, thanks.

-- Pete
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