From: David Mosberger <davidm@napali.hpl.hp.com>
To: "David S. Miller" <davem@redhat.com>
Cc: davidm@hpl.hp.com, manfred@colorfullife.com, axboe@suse.de,
linux-kernel@vger.kernel.org
Subject: Re: problem with blk_queue_bounce_limit()
Date: Fri, 6 Jun 2003 00:19:08 -0700 [thread overview]
Message-ID: <16096.16492.286361.509747@napali.hpl.hp.com> (raw)
In-Reply-To: <20030605.235249.35666087.davem@redhat.com>
>>>>> On Thu, 05 Jun 2003 23:52:49 -0700 (PDT), "David S. Miller" <davem@redhat.com> said:
David> you're not setting PCI_DMA_BUS_IS_PHYS properly. For IOMMU
David> it should be set to zero. This tells the block layer if
David> you're IOMMU or not.
Ah, yes, thanks for pointing this out.
PCI_DMA_BUS_IS_PHYS (and it's description) is quite misleading: it
claims that it has something to do with there being an equivalence
between PCI bus and physical addresses. That's actually the case for
(small) ia64 platforms so that's why we ended up setting it to 1.
--david
next prev parent reply other threads:[~2003-06-06 7:05 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-05 6:42 problem with blk_queue_bounce_limit() David Mosberger
2003-06-05 7:20 ` David S. Miller
2003-06-06 6:42 ` David Mosberger
2003-06-06 6:45 ` David S. Miller
2003-06-06 6:54 ` David Mosberger
2003-06-06 7:08 ` David S. Miller
2003-06-06 6:52 ` David S. Miller
2003-06-06 7:19 ` David Mosberger [this message]
2003-06-06 7:32 ` David S. Miller
2003-06-06 7:44 ` Christoph Hellwig
2003-06-06 7:43 ` David S. Miller
2003-06-06 7:51 ` Christoph Hellwig
2003-06-06 20:13 ` David Mosberger
2003-06-07 6:44 ` David S. Miller
2003-06-07 7:05 ` David Mosberger
2003-06-07 7:11 ` David S. Miller
2003-06-10 20:01 ` David Mosberger
2003-06-12 6:47 ` David S. Miller
2003-06-15 7:06 ` Anton Blanchard
2003-06-15 7:11 ` David S. Miller
2003-06-15 8:04 ` Anton Blanchard
2003-06-15 8:18 ` David S. Miller
2003-06-07 7:20 ` David Mosberger
2003-06-07 7:19 ` David S. Miller
2003-06-07 9:44 ` Russell King
2003-06-07 9:47 ` David S. Miller
2003-06-07 13:23 ` Christoph Hellwig
2003-06-10 20:24 ` David Mosberger
2003-06-06 18:06 James Bottomley
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