From: Jeff Garzik <jeff@garzik.org>
To: benh@kernel.crashing.org
Cc: FUJITA Tomonori <tomof@acm.org>,
hare@suse.de, open-iscsi@googlegroups.com, hch@infradead.org,
davem@davemloft.net, mchristi@redhat.com, netdev@vger.kernel.org,
anilgv@broadcom.com, talm@broadcom.com, lusinsky@broadcom.com,
uri@broadcom.com, fujita.tomonori@lab.ntt.co.jp
Subject: Re: [PATCH v3 2/2][BNX2]: Add iSCSI support to BNX2 devices.
Date: Thu, 27 Sep 2007 03:49:27 -0400 [thread overview]
Message-ID: <46FB6087.10306@garzik.org> (raw)
In-Reply-To: <1190878682.30275.9.camel@pasglop>
Benjamin Herrenschmidt wrote:
> On Thu, 2007-09-27 at 03:31 -0400, Jeff Garzik wrote:
>> A key problem I was hoping would be solved with your work here was
>> the
>> elimination of that post dma_map_sg() split.
>>
>> If I understood James and Ben correctly, one of the key problems was
>> always in communicating libata's segment boundary needs to the IOMMU
>> layers?
>
> Yup. If we can put some constraint in struct device that the dma mapping
> code can then look at ... we also need to ensure that what's passed in
> for DMA'ing already matches those constraints as well since no-iommu
> platforms will basically just keep the dma table as-is.
That's a good point... no-iommu platforms would need to be updated to
do the split for me. I suppose we can steal that code from swiotlb or
somewhere.
Jeff
next prev parent reply other threads:[~2007-09-27 7:49 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1188599815.5176.12.camel@dell>
2007-09-05 18:34 ` [PATCH v3 2/2][BNX2]: Add iSCSI support to BNX2 devices Mike Christie
2007-09-05 21:27 ` Anil Veerabhadrappa
2007-09-07 22:23 ` Mike Christie
2007-11-21 18:38 ` Anil Veerabhadrappa
2007-11-21 19:17 ` James Smart
[not found] ` <1195670296.8767.9.camel-opBMJL+S1+mb6IhXEaeG+wpgy58w7zIFpWgKQ6/u3Fg@public.gmane.org>
2007-11-27 4:15 ` Mike Christie
2007-11-28 0:44 ` Anil Veerabhadrappa
[not found] ` <1196210691.5980.20.camel-opBMJL+S1+mb6IhXEaeG+20Cxg0+/0ngpWgKQ6/u3Fg@public.gmane.org>
2007-11-28 20:06 ` Mike Christie
2007-11-29 0:36 ` Anil Veerabhadrappa
2007-09-08 11:59 ` Christoph Hellwig
2007-09-08 14:49 ` Michael Chan
2007-09-08 17:57 ` Anil Veerabhadrappa
2007-09-07 22:36 ` Mike Christie
2007-09-08 7:41 ` FUJITA Tomonori
2007-09-08 11:32 ` Jeff Garzik
2007-09-08 12:00 ` Christoph Hellwig
2007-09-09 15:05 ` FUJITA Tomonori
2007-09-25 8:39 ` Hannes Reinecke
2007-09-26 8:57 ` FUJITA Tomonori
2007-09-27 7:31 ` Jeff Garzik
2007-09-27 7:38 ` Benjamin Herrenschmidt
2007-09-27 7:49 ` Jeff Garzik [this message]
2007-09-27 8:12 ` Benjamin Herrenschmidt
2007-09-27 8:22 ` Jeff Garzik
2007-09-27 8:46 ` FUJITA Tomonori
2007-09-27 8:06 ` FUJITA Tomonori
2007-09-27 8:23 ` Jeff Garzik
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