From: Joerg Roedel <joro@8bytes.org>
To: Torsten Kaiser <just.for.lkml@googlemail.com>
Cc: Joerg Roedel <joerg.roedel@amd.com>,
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>,
Linus Torvalds <torvalds@linux-foundation.org>,
mingo@elte.hu, lethal@linux-sh.org, hancockrwd@gmail.com,
jens.axboe@oracle.com, bharrosh@panasas.com,
linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org
Subject: Re: [PATCH] dma-debug: disable DMA_API_DEBUG for now
Date: Sat, 13 Jun 2009 19:34:51 +0200 [thread overview]
Message-ID: <20090613173451.GB18638@8bytes.org> (raw)
In-Reply-To: <64bb37e0906130726i7b6ac33dma25e17c72cca54dd@mail.gmail.com>
On Sat, Jun 13, 2009 at 04:26:06PM +0200, Torsten Kaiser wrote:
> On Sat, Jun 13, 2009 at 1:10 PM, Joerg Roedel<joro@8bytes.org> wrote:
> >
> > paddr shouldn't matter. We also can't compare against it because it is
> > not a parameter we get in the unmap path (not always).
>
> check_unmap() checks it and sg_call_ents are also optional.
check_unmap() only checks it for coherent mappings (where it makes
sense). But for a best-fit search it does not make sense because we
already check for the type and multiple coherent mappings to the same
dma_addr for the same device are not possible (because for coherent
mappings the memory is allocated by the dma_ops backend).
Joerg
next prev parent reply other threads:[~2009-06-13 17:34 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-05 8:33 [PATCH] dma-debug: disable DMA_API_DEBUG for now FUJITA Tomonori
2009-06-05 10:41 ` Joerg Roedel
2009-06-05 10:41 ` Joerg Roedel
2009-06-05 11:38 ` FUJITA Tomonori
2009-06-05 11:38 ` FUJITA Tomonori
2009-06-05 12:44 ` Joerg Roedel
2009-06-05 12:44 ` Joerg Roedel
2009-06-05 14:57 ` Arnd Bergmann
2009-06-05 15:52 ` Torsten Kaiser
2009-06-05 15:52 ` Torsten Kaiser
2009-06-05 18:20 ` Joerg Roedel
2009-06-05 20:25 ` Torsten Kaiser
2009-06-05 22:11 ` Torsten Kaiser
2009-06-07 8:13 ` Ingo Molnar
2009-06-07 8:22 ` Torsten Kaiser
2009-06-07 10:45 ` FUJITA Tomonori
2009-06-07 10:22 ` [tip:core/iommu] dma-debug: change hash_bucket_find from first-fit to best-fit tip-bot for Joerg Roedel
2009-06-10 20:41 ` [PATCH] dma-debug: disable DMA_API_DEBUG for now Torsten Kaiser
2009-06-11 8:10 ` Joerg Roedel
2009-06-11 8:10 ` Joerg Roedel
2009-06-11 17:38 ` Torsten Kaiser
2009-06-12 7:50 ` Joerg Roedel
2009-06-12 7:50 ` Joerg Roedel
2009-06-12 14:13 ` Joerg Roedel
2009-06-12 14:51 ` Torsten Kaiser
2009-06-13 11:10 ` Joerg Roedel
2009-06-13 14:26 ` Torsten Kaiser
2009-06-13 17:34 ` Joerg Roedel [this message]
2009-06-13 17:08 ` Torsten Kaiser
2009-06-15 7:46 ` Joerg Roedel
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