From: Brian King <brking@linux.vnet.ibm.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Daniel Kreling <kreling@linux.vnet.ibm.com>,
linuxppc-dev@lists.ozlabs.org,
linux-scsi <linux-scsi@vger.kernel.org>,
Arnd Bergmann <arnd@arndb.de>,
Sreekanth Reddy <sreekanth.reddy@avagotech.com>
Subject: Re: [RFC/PATCH v3] powerpc/iommu: Support "hybrid" iommu/direct DMA ops for coherent_mask < dma_mask
Date: Fri, 15 May 2015 17:19:52 -0500 [thread overview]
Message-ID: <55567108.7020601@linux.vnet.ibm.com> (raw)
In-Reply-To: <1431641034.4160.71.camel@kernel.crashing.org>
On 05/14/2015 05:03 PM, Benjamin Herrenschmidt wrote:
> This patch adds the ability to the DMA direct ops to fallback to the IOMMU
> ops for coherent alloc/free if the coherent mask of the device isn't
> suitable for accessing the direct DMA space and the device also happens
> to have an active IOMMU table.
>
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> ---
>
Thanks. This one works fine for me with mpt2sas.
Tested-by: Brian King <brking@linux.vnet.ibm.com>
-Brian
--
Brian King
Power Linux I/O
IBM Linux Technology Center
next prev parent reply other threads:[~2015-05-15 22:19 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-12 22:07 mpt2sas DMA mask Brian King
2015-05-12 22:10 ` Benjamin Herrenschmidt
2015-05-12 23:24 ` [PATCH] mpt2sas: Fall back to 64 bit coherent mask if 64 bit DMA / 32 bit coherent mask not supported Brian King
2015-05-13 8:10 ` Arnd Bergmann
2015-05-13 13:23 ` Brian King
2015-05-13 13:31 ` Arnd Bergmann
2015-05-13 13:59 ` James Bottomley
2015-05-13 14:12 ` Brian King
2015-05-13 16:44 ` Sreekanth Reddy
2015-05-13 20:56 ` Benjamin Herrenschmidt
2015-05-13 21:37 ` Brian King
2015-05-14 7:43 ` [RFC/PATCH] powerpc/iommu: Support "hybrid" iommu/direct DMA ops for coherent_mask < dma_mask Benjamin Herrenschmidt
2015-05-14 21:34 ` Brian King
2015-05-14 21:58 ` [RFC/PATCH v2] " Benjamin Herrenschmidt
2015-05-14 22:03 ` [RFC/PATCH v3] " Benjamin Herrenschmidt
2015-05-15 22:19 ` Brian King [this message]
2015-05-18 3:56 ` [PATCH] " Benjamin Herrenschmidt
2015-05-18 6:40 ` Michael Ellerman
2015-06-19 21:19 ` Brian King
2015-06-19 23:01 ` Benjamin Herrenschmidt
2015-06-29 19:38 ` Brian King
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