From: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
To: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
Cc: "iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org"
<iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
"thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org"
<thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
"laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org"
<laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org>,
"Varun.Sethi-KZfg59tc24xl57MIdRCFDg@public.gmane.org"
<Varun.Sethi-KZfg59tc24xl57MIdRCFDg@public.gmane.org>,
"dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org"
<dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
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<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>
Subject: Re: [GIT PULL] iommu: Kill off pgsize_bitmap field from struct iommu_ops
Date: Wed, 1 Apr 2015 17:53:51 +0200 [thread overview]
Message-ID: <20150401155351.GH4441@8bytes.org> (raw)
In-Reply-To: <20150401115340.GG1552-5wv7dgnIgG8@public.gmane.org>
Hi Will,
On Wed, Apr 01, 2015 at 12:53:40PM +0100, Will Deacon wrote:
> Joerg: are you still against merging this? If so, what do you need to
> see in order to change your mind? This is certainly something that we
> need on ARM-based systems and, tbh, the direction that the IOMMU core is
> going seems to be towards a N:1 domain:IOMMU mapping anyway (c.f. your
> series to embed struct iommu_domain in a driver-private data structure).
What I want is consistent behavior between drivers. Until now I tried to
push for the domain concept, which allows to attach arbitrary devices to
a domain. This patch-set makes it impossible to achieve this goal,
that's why I am resistant against it.
We can discuss moving into another direction with the IOMMU-API, and
re-evaluate then if this patch-set is still required.
Joerg
WARNING: multiple messages have this Message-ID (diff)
From: joro@8bytes.org (Joerg Roedel)
To: linux-arm-kernel@lists.infradead.org
Subject: [GIT PULL] iommu: Kill off pgsize_bitmap field from struct iommu_ops
Date: Wed, 1 Apr 2015 17:53:51 +0200 [thread overview]
Message-ID: <20150401155351.GH4441@8bytes.org> (raw)
In-Reply-To: <20150401115340.GG1552@arm.com>
Hi Will,
On Wed, Apr 01, 2015 at 12:53:40PM +0100, Will Deacon wrote:
> Joerg: are you still against merging this? If so, what do you need to
> see in order to change your mind? This is certainly something that we
> need on ARM-based systems and, tbh, the direction that the IOMMU core is
> going seems to be towards a N:1 domain:IOMMU mapping anyway (c.f. your
> series to embed struct iommu_domain in a driver-private data structure).
What I want is consistent behavior between drivers. Until now I tried to
push for the domain concept, which allows to attach arbitrary devices to
a domain. This patch-set makes it impossible to achieve this goal,
that's why I am resistant against it.
We can discuss moving into another direction with the IOMMU-API, and
re-evaluate then if this patch-set is still required.
Joerg
next prev parent reply other threads:[~2015-04-01 15:53 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-27 17:19 [GIT PULL] iommu: Kill off pgsize_bitmap field from struct iommu_ops Will Deacon
2015-03-27 17:19 ` Will Deacon
[not found] ` <20150327171946.GL1562-5wv7dgnIgG8@public.gmane.org>
2015-03-31 14:24 ` Joerg Roedel
2015-03-31 14:24 ` Joerg Roedel
[not found] ` <20150331142440.GD22683-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2015-03-31 14:49 ` Will Deacon
2015-03-31 14:49 ` Will Deacon
[not found] ` <20150331144956.GA24094-5wv7dgnIgG8@public.gmane.org>
2015-03-31 15:50 ` Alex Williamson
2015-03-31 15:50 ` Alex Williamson
[not found] ` <1427817050.5567.148.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-04-01 11:53 ` Will Deacon
2015-04-01 11:53 ` Will Deacon
[not found] ` <20150401115340.GG1552-5wv7dgnIgG8@public.gmane.org>
2015-04-01 15:53 ` Joerg Roedel [this message]
2015-04-01 15:53 ` Joerg Roedel
2015-04-01 16:45 ` Alex Williamson
2015-04-01 16:45 ` Alex Williamson
2015-04-01 15:38 ` Joerg Roedel
2015-04-01 15:38 ` Joerg Roedel
[not found] ` <20150401153854.GG4441-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2015-04-01 17:03 ` Will Deacon
2015-04-01 17:03 ` Will Deacon
[not found] ` <20150401170330.GO1552-5wv7dgnIgG8@public.gmane.org>
2015-04-01 21:24 ` Joerg Roedel
2015-04-01 21:24 ` Joerg Roedel
2015-03-31 16:07 ` Robin Murphy
2015-03-31 16:07 ` Robin Murphy
2015-04-01 13:14 ` David Woodhouse
2015-04-01 13:14 ` David Woodhouse
[not found] ` <1427894051.22236.6.camel-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-04-01 13:39 ` Will Deacon
2015-04-01 13:39 ` Will Deacon
[not found] ` <20150401133908.GI1552-5wv7dgnIgG8@public.gmane.org>
2015-04-01 13:52 ` David Woodhouse
2015-04-01 13:52 ` David Woodhouse
[not found] ` <1427896377.22236.8.camel-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-04-01 14:05 ` Will Deacon
2015-04-01 14:05 ` Will Deacon
[not found] ` <20150401140512.GJ1552-5wv7dgnIgG8@public.gmane.org>
2015-04-01 14:28 ` David Woodhouse
2015-04-01 14:28 ` David Woodhouse
[not found] ` <1427898490.22236.10.camel-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-04-01 14:39 ` Will Deacon
2015-04-01 14:39 ` Will Deacon
[not found] ` <20150401143904.GL1552-5wv7dgnIgG8@public.gmane.org>
2015-04-01 14:46 ` David Woodhouse
2015-04-01 14:46 ` David Woodhouse
[not found] ` <1427899570.22236.14.camel-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-04-01 16:36 ` Will Deacon
2015-04-01 16:36 ` Will Deacon
[not found] ` <20150401163618.GN1552-5wv7dgnIgG8@public.gmane.org>
2015-04-01 21:28 ` joro-zLv9SwRftAIdnm+yROfE0A
2015-04-01 21:28 ` joro at 8bytes.org
[not found] ` <20150401212854.GK4441-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2015-04-02 8:58 ` Will Deacon
2015-04-02 8:58 ` Will Deacon
2015-04-01 16:51 ` Alex Williamson
2015-04-01 16:51 ` Alex Williamson
[not found] ` <1427907064.5567.256.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-04-01 17:50 ` Will Deacon
2015-04-01 17:50 ` Will Deacon
[not found] ` <20150401175040.GQ1552-5wv7dgnIgG8@public.gmane.org>
2015-04-01 18:18 ` Alex Williamson
2015-04-01 18:18 ` Alex Williamson
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