From: robin.murphy@arm•com (Robin Murphy)
To: linux-arm-kernel@lists•infradead.org
Subject: [RFC PATCH 0/4] Genericise the IOVA allocator
Date: Tue, 25 Nov 2014 17:27:24 +0000 [thread overview]
Message-ID: <cover.1416931258.git.robin.murphy@arm.com> (raw)
Hi all,
I've been implementing IOMMU DMA mapping for arm64, based on tidied-up
parts of the existing arch/arm/mm/dma-mapping.c with a clear divide
between the arch-specific parts and the general DMA-API to IOMMU-API layer
so that that can be shared; similar to what Ritesh started before and was
unable to complete[1], but working in the other direction.
The first part of that tidy-up involved ripping out the homebrewed IOVA
allocator and plumbing in iova.c, necessitating the changes presented here.
The rest is currently sat under arch/arm64 for the sake of getting it
working quickly with minimal impact - ideally I'd move it out and port
arch/arm before merging, but I don't know quite how impatient people are.
Regardless of that decision, this bit stands alone, so here it is.
Feel free to ignore patches 1 and 2, since I see Sakari has recently
posted a more thorough series for that[2], that frankly looks nicer ;)
I've merely left them in as context here.
[1]:http://thread.gmane.org/gmane.linux.ports.arm.kernel/331299
[2]:http://article.gmane.org/gmane.linux.kernel.iommu/7436
Robin Murphy (4):
iommu: build iova.c for any IOMMU
iommu: consolidate IOVA allocator code
iommu: make IOVA domain low limit flexible
iommu: make IOVA domain page size explicit
drivers/iommu/Makefile | 4 ++--
drivers/iommu/intel-iommu.c | 45 ++++++++++-------------------------------
drivers/iommu/iova.c | 49 +++++++++++++++++++++++++++++++++++++++++----
include/linux/iova.h | 41 +++++++++++++++++++++++++++++++++----
4 files changed, 95 insertions(+), 44 deletions(-)
--
1.9.1
next reply other threads:[~2014-11-25 17:27 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-25 17:27 Robin Murphy [this message]
2014-11-25 17:27 ` [RFC PATCH 1/4] iommu: build iova.c for any IOMMU Robin Murphy
2014-11-26 6:58 ` leizhen
2014-11-26 12:19 ` Robin Murphy
2014-11-25 17:27 ` [RFC PATCH 2/4] iommu: consolidate IOVA allocator code Robin Murphy
2014-11-25 17:27 ` [RFC PATCH 3/4] iommu: make IOVA domain low limit flexible Robin Murphy
2014-11-25 17:27 ` [RFC PATCH 4/4] iommu: make IOVA domain page size explicit Robin Murphy
2014-11-26 7:17 ` leizhen
2014-11-26 13:31 ` Robin Murphy
2014-11-27 7:10 ` leizhen
2014-11-27 12:43 ` [RFC PATCH 0/4] Genericise the IOVA allocator Sakari Ailus
2015-01-12 15:52 ` Joerg Roedel
2015-01-12 16:05 ` Robin Murphy
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