From: Michael Ellerman <mpe@ellerman.id.au>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
linuxppc-dev@lists.ozlabs.org
Cc: Brian King <brking@linux.vnet.ibm.com>
Subject: Re: powerpc/iommu: Support "hybrid" iommu/direct DMA ops for coherent_mask < dma_mask
Date: Mon, 18 May 2015 16:40:27 +1000 (AEST) [thread overview]
Message-ID: <20150518064027.27A97140D18@ozlabs.org> (raw)
In-Reply-To: <1431921411.4160.134.camel@kernel.crashing.org>
On Mon, 2015-18-05 at 03:56:51 UTC, 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.
Can you do the removal of the union, the #ifdef PPC64 and the static inlines as
a precursor patch, that would remove some of the noise in the diff.
And can you explain the changes to dart, pseries and powernv.
There's also some whitespace changes in iommu.h that I assume you didn't want?
cheers
next prev parent reply other threads:[~2015-05-18 6:40 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
2015-05-18 3:56 ` [PATCH] " Benjamin Herrenschmidt
2015-05-18 6:40 ` Michael Ellerman [this message]
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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