linux-kernel - Re: [PATCH 00/15] iommu: Move domain allocation into drivers

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Date:	Fri, 20 Mar 2015 17:24:18 +0800
From:	Yingjoe Chen <yingjoe.chen@...iatek.com>
To:	Joerg Roedel <joro@...tes.org>
CC:	<iommu@...ts.linux-foundation.org>,
	Alexandre Courbot <gnurou@...il.com>,
	<linux-samsung-soc@...r.kernel.org>,
	Heiko Stuebner <heiko@...ech.de>,
	Arnd Bergmann <arnd@...db.de>,
	Stephen Warren <swarren@...dotorg.org>,
	Will Deacon <will.deacon@....com>,
	<linux-kernel@...r.kernel.org>,
	<linux-rockchip@...ts.infradead.org>,
	Alex Williamson <alex.williamson@...hat.com>,
	Kukjin Kim <kgene@...nel.org>,
	Thierry Reding <thierry.reding@...il.com>, <jroedel@...e.de>,
	<linux-tegra@...r.kernel.org>,
	David Woodhouse <dwmw2@...radead.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Hiroshi Doyu <hdoyu@...dia.com>,
	Tomasz Figa <tfiga@...omium.org>,
	Yong Wu (吴勇) 
	<yong.wu@...iatek.com>, Robin Murphy <robin.murphy@....com>
Subject: Re: [PATCH 00/15] iommu: Move domain allocation into drivers

On Tue, 2015-01-27 at 00:51 +0100, Joerg Roedel wrote:
> From: Joerg Roedel <jroedel@...e.de>
> 
> Hi,
> 
> here is patch-set to replace the existing domain_init and
> domain_destroy iommu-ops with the new domain_alloc and
> domain_free callbacks
> 
> The new callbacks move the allocation of iommu domains into
> the iommu driver, allowing them to put a generic
> iommu_domain struct into their own domain struct. This makes
> domain handling in the drivers more cache efficient and
> prepares the introduction of default domains in another
> patch-set.

Hi Joerg,

What's the status of this patchset?
While porting MTK IOMMU driver[1], we need to use a global variable
because we need to do dma_alloc_coherent in our domain_init. I think we
can remove that global variable if we base on this series.

Joe.C

[1]
http://lists.infradead.org/pipermail/linux-arm-kernel/2015-March/328461.html


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