From: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
To: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
Cc: "srv_heupstream-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org"
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<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Tomasz Figa <tfiga-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
"iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org"
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"linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
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"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
Sascha Hauer <kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>,
Matthias Brugger
<matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Yong Wu <yong.wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
Lucas Stach <l.stach-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
Subject: Re: [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-zLv9SwRftAIdnm+yROfE0A@public.gmane.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-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
> > ---
> > 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
[not found] ` <1430206881-18294-1-git-send-email-yong.wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2015-05-05 16:18 ` Joerg Roedel
[not found] ` <20150505161802.GA20611-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2015-05-05 17:05 ` Will Deacon [this message]
[not found] ` <20150505170541.GN1550-5wv7dgnIgG8@public.gmane.org>
2015-05-11 10:13 ` Joerg Roedel
[not found] ` <20150511101309.GH20611-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2015-05-11 10:40 ` Will Deacon
[not found] ` <20150511104030.GA4795-5wv7dgnIgG8@public.gmane.org>
2015-05-12 5:30 ` Yong Wu
2015-05-12 9:15 ` Matthias Brugger
[not found] ` <CABuKBeKupM0zmWu6T3g5omH7PRo9Oxp85bfpQVhC1ur16_dzvg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-05-13 2:52 ` Yong Wu
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