From: will.deacon@arm•com (Will Deacon)
To: linux-arm-kernel@lists•infradead.org
Subject: [RFC PATCH] iommu: add ARM short descriptor page table allocator.
Date: Tue, 5 May 2015 18:05:41 +0100 [thread overview]
Message-ID: <20150505170541.GN1550@arm.com> (raw)
In-Reply-To: <20150505161802.GA20611@8bytes.org>
On Tue, May 05, 2015 at 05:18:02PM +0100, Joerg Roedel wrote:
> On Tue, Apr 28, 2015 at 03:41:21PM +0800, Yong Wu wrote:
> > This patch is for ARM Short Descriptor Format.It has 2-levels
> > pagetable and the allocator supports 4K/64K/1M/16M.
> >
> > Signed-off-by: Yong Wu <yong.wu@mediatek•com>
> > ---
> > drivers/iommu/Kconfig | 7 +
> > drivers/iommu/Makefile | 1 +
> > drivers/iommu/io-pgtable-arm-short.c | 489 +++++++++++++++++++++++++++++++++++
> > drivers/iommu/io-pgtable.c | 4 +
> > drivers/iommu/io-pgtable.h | 6 +
> > 5 files changed, 507 insertions(+)
> > create mode 100644 drivers/iommu/io-pgtable-arm-short.c
>
> What is the context of this, where will it be used?
I think the MT8173 IOMMU [1] uses this format and, since it's part of
the ARM architecture, the ARM SMMU can make use of it too if the
implementation supports it.
Will
[1]
http://lists.infradead.org/pipermail/linux-mediatek/2015-March/000058.html
next prev parent reply other threads:[~2015-05-05 17:05 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-28 7:41 [RFC PATCH] iommu: add ARM short descriptor page table allocator Yong Wu
2015-05-05 16:18 ` Joerg Roedel
2015-05-05 17:05 ` Will Deacon [this message]
2015-05-11 10:13 ` Joerg Roedel
2015-05-11 10:40 ` Will Deacon
2015-05-12 5:30 ` Yong Wu
2015-05-12 9:15 ` Matthias Brugger
2015-05-13 2:52 ` Yong Wu
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