From: Brian King <brking@linux.vnet.ibm.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Sreekanth Reddy <sreekanth.reddy@avagotech.com>,
Arnd Bergmann <arnd@arndb.de>,
linuxppc-dev@lists.ozlabs.org,
Daniel Kreling <kreling@linux.vnet.ibm.com>,
linux-scsi <linux-scsi@vger.kernel.org>
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
WARNING: multiple messages have this Message-ID (diff)
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: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-12 22:07 mpt2sas DMA mask Brian King
2015-05-12 22:07 ` Brian King
2015-05-12 22:10 ` Benjamin Herrenschmidt
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
2015-05-12 23:24 ` Brian King
2015-05-13 8:10 ` Arnd Bergmann
2015-05-13 8:10 ` Arnd Bergmann
2015-05-13 13:23 ` Brian King
2015-05-13 13:23 ` Brian King
2015-05-13 13:31 ` Arnd Bergmann
2015-05-13 13:31 ` Arnd Bergmann
2015-05-13 13:59 ` James Bottomley
2015-05-13 13:59 ` James Bottomley
2015-05-13 14:12 ` Brian King
2015-05-13 14:12 ` Brian King
2015-05-13 16:44 ` Sreekanth Reddy
2015-05-13 16:44 ` Sreekanth Reddy
2015-05-13 20:56 ` Benjamin Herrenschmidt
2015-05-13 20:56 ` Benjamin Herrenschmidt
2015-05-13 21:37 ` Brian King
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 7:43 ` Benjamin Herrenschmidt
2015-05-14 21:34 ` Brian King
2015-05-14 21:34 ` Brian King
2015-05-14 21:58 ` [RFC/PATCH v2] " Benjamin Herrenschmidt
2015-05-14 21:58 ` Benjamin Herrenschmidt
2015-05-14 22:03 ` [RFC/PATCH v3] " Benjamin Herrenschmidt
2015-05-14 22:03 ` Benjamin Herrenschmidt
2015-05-15 22:19 ` Brian King [this message]
2015-05-15 22:19 ` Brian King
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=55567108.7020601@linux.vnet.ibm.com \
--to=brking@linux.vnet.ibm.com \
--cc=arnd@arndb.de \
--cc=benh@kernel.crashing.org \
--cc=kreling@linux.vnet.ibm.com \
--cc=linux-scsi@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=sreekanth.reddy@avagotech.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.