From: David Woodhouse <dwmw2@infradead.org>
To: Dan Williams <dan.j.williams@intel.com>
Cc: Chris Li <lkml@chrisli.org>, linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: BUG in drivers/dma/ioat/dma_v2.c:314
Date: Sat, 10 Jul 2010 01:09:14 +0100 [thread overview]
Message-ID: <1278720554.9522.18.camel@localhost> (raw)
In-Reply-To: <4C379462.1020704@intel.com>
On Fri, 2010-07-09 at 14:28 -0700, Dan Williams wrote:
> It doesn't appear to from the dmesg below. I agree, I would prefer to
> do a topology based check like this rather than cheating with
> !cap_write_drain(), but it looks like cheating is the reliable option.
Actually, given that we know the chipset, can't we just read the VT BARs
directly from config space and check that the base address of the IOMMU
we get is the right one for the I/OAT device?
Something like...
pci_read_config_dword( ("0:0.0") , 0x48, &vtbar );
if (drhd->base_address != vtbar)
WARN();
--
dwmw2
next prev parent reply other threads:[~2010-07-10 0:10 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-28 23:50 BUG in drivers/dma/ioat/dma_v2.c:314 Chris Li
2010-06-29 0:45 ` Dan Williams
2010-06-29 7:17 ` Chris Li
2010-06-29 23:20 ` Chris Li
2010-06-29 23:57 ` Dan Williams
2010-06-30 1:07 ` Chris Li
2010-06-30 4:17 ` Dan Williams
2010-06-30 18:26 ` Chris Li
2010-06-30 18:43 ` Chris Li
2010-06-30 18:43 ` David Woodhouse
2010-06-30 19:40 ` Dan Williams
2010-06-30 20:02 ` David Woodhouse
2010-06-30 21:44 ` Dan Williams
2010-06-30 21:59 ` Chris Li
2010-06-30 22:04 ` Dan Williams
2010-07-01 6:21 ` David Woodhouse
2010-07-01 6:51 ` Dan Williams
2010-07-01 7:12 ` David Woodhouse
2010-07-01 7:26 ` Dan Williams
2010-07-01 8:15 ` David Woodhouse
2010-07-01 17:20 ` Dan Williams
2010-07-01 17:58 ` Chris Li
2010-07-02 19:00 ` Chris Li
2010-07-05 10:16 ` David Woodhouse
2010-07-06 23:40 ` Chris Li
2010-07-07 0:51 ` Dan Williams
2010-07-07 0:51 ` Chris Li
2010-07-07 0:58 ` Dan Williams
2010-07-07 1:03 ` Chris Li
2010-07-07 3:22 ` David Woodhouse
2010-07-07 3:40 ` David Woodhouse
2010-07-07 17:47 ` Dan Williams
2010-07-07 18:07 ` David Woodhouse
2010-07-07 21:56 ` Chris Li
2010-07-09 21:28 ` Dan Williams
2010-07-09 22:00 ` Chris Li
2010-07-10 0:09 ` David Woodhouse [this message]
2010-07-15 5:41 ` Dan Williams
2010-07-16 21:29 ` Chris Li
2010-07-16 22:12 ` David Woodhouse
2010-07-16 22:40 ` Chris Li
2010-07-22 1:15 ` Dan Williams
2010-07-22 21:39 ` Chris Li
2010-07-22 22:00 ` Dan Williams
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