linux-kernel - Re: BUG in drivers/dma/ioat/dma

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Message-ID: <4C479BB1.8020102@intel.com>
Date:	Wed, 21 Jul 2010 18:15:29 -0700
From:	Dan Williams <dan.j.williams@...el.com>
To:	Chris Li <lkml@...isli.org>
CC:	David Woodhouse <dwmw2@...radead.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: BUG in drivers/dma/ioat/dma_v2.c:314

On 7/16/2010 3:40 PM, Chris Li wrote:
> On Fri, Jul 16, 2010 at 3:12 PM, David Woodhouse<dwmw2@...radead.org>  wrote:
>> Ah, that's the problem. Sorry, should have noticed this before. Since
>> this is the catch-all IOMMU, the device isn't explicitly listed.
>>
>> You want 'drhd = dmar_find_matched_drhd_unit(pdev);' and then compare
>> vtbar with the reg_base_addr of that one.
>>
>
> Care to send a new patch?
>

Here is v5 with the aforementioned change.

--
Dan

View attachment "ioat-catch-broken-vtd-v5.patch" of type "text/plain" (5251 bytes)