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From: m.nazarewicz@samsung.com (Michał Nazarewicz)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFCv5 0/9] CMA + VCMM integration
Date: Tue, 07 Sep 2010 03:40:46 +0200	[thread overview]
Message-ID: <op.vim2x8i87p4s8u@localhost> (raw)
In-Reply-To: <20100906210905.GB5863@kroah.com>

On Mon, 06 Sep 2010 23:09:05 +0200, Greg KH <greg@kroah.com> wrote:

> On Mon, Sep 06, 2010 at 08:33:50AM +0200, Michal Nazarewicz wrote:
>> Hello everyone,
>>
>> This patchset introduces a draft of a redesign of Zach Pfeffer's
>> VCMM.
>
> What is a VCMM?

Virtual Contiguous Memory Manager.  The version posted by Zach can
be found at: <http://article.gmane.org/gmane.linux.kernel.mm/50090>.
It is an API for managing IO MMU and IO MMU mappings.

> What is a CMA?

Contiguous Memory Manager.  The v4 version can be found at
<http://marc.info/?l=linux-mm&m=128229799415817&w=2>.  It is an API for
allocating large, physically contiguous blocks of memory.

I haven't expected that anyone who haven't already participated in the
discussion about CMA and VCMM will get interested by this patchset
so I was a bit vague in the cover letter.  Sorry about that.

>> Not all of the functionality of the original VCMM has been
>> ported into this patchset.  This is mostly meant as RFC.  Moreover,
>> the code for VCMM implementation in this RFC has not been tested.

> If you haven't even tested it, why should we review it?

Ignore the code then and look just at the documentation, please.
I wanted to post what I have to receive comments about the general
idea and not necessarily the code itself.  Code is just a mean to show
how I see the implementation of the idea described in the documentation.
Because of all that, I marked the patchset as a RFC rather than a PATCH.

-- 
Best regards,                                        _     _
| Humble Liege of Serenely Enlightened Majesty of  o' \,=./ `o
| Computer Science,  Micha? "mina86" Nazarewicz       (o o)
+----[mina86*mina86.com]---[mina86*jabber.org]----ooO--(_)--Ooo--

WARNING: multiple messages have this Message-ID (diff)
From: "Michał Nazarewicz" <m.nazarewicz@samsung.com>
To: Greg KH <greg@kroah.com>
Cc: linux-arm-kernel@lists.infradead.org,
	linux-media@vger.kernel.org, linux-mm@kvack.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Daniel Walker <dwalker@codeaurora.org>,
	FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>,
	Hans Verkuil <hverkuil@xs4all.nl>,
	Jonathan Corbet <corbet@lwn.net>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Marek Szyprowski <m.szyprowski@samsung.com>,
	Mel Gorman <mel@csn.ul.ie>, Minchan Kim <minchan.kim@gmail.com>,
	Pawel Osciak <p.osciak@samsung.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Russell King <linux@arm.linux.org.uk>,
	Zach Pfeffer <zpfeffer@codeaurora.org>,
	linux-kernel@vger.kernel.org
Subject: Re: [RFCv5 0/9] CMA + VCMM integration
Date: Tue, 07 Sep 2010 03:40:46 +0200	[thread overview]
Message-ID: <op.vim2x8i87p4s8u@localhost> (raw)
In-Reply-To: <20100906210905.GB5863@kroah.com>

On Mon, 06 Sep 2010 23:09:05 +0200, Greg KH <greg@kroah.com> wrote:

> On Mon, Sep 06, 2010 at 08:33:50AM +0200, Michal Nazarewicz wrote:
>> Hello everyone,
>>
>> This patchset introduces a draft of a redesign of Zach Pfeffer's
>> VCMM.
>
> What is a VCMM?

Virtual Contiguous Memory Manager.  The version posted by Zach can
be found at: <http://article.gmane.org/gmane.linux.kernel.mm/50090>.
It is an API for managing IO MMU and IO MMU mappings.

> What is a CMA?

Contiguous Memory Manager.  The v4 version can be found at
<http://marc.info/?l=linux-mm&m=128229799415817&w=2>.  It is an API for
allocating large, physically contiguous blocks of memory.

I haven't expected that anyone who haven't already participated in the
discussion about CMA and VCMM will get interested by this patchset
so I was a bit vague in the cover letter.  Sorry about that.

>> Not all of the functionality of the original VCMM has been
>> ported into this patchset.  This is mostly meant as RFC.  Moreover,
>> the code for VCMM implementation in this RFC has not been tested.

> If you haven't even tested it, why should we review it?

Ignore the code then and look just at the documentation, please.
I wanted to post what I have to receive comments about the general
idea and not necessarily the code itself.  Code is just a mean to show
how I see the implementation of the idea described in the documentation.
Because of all that, I marked the patchset as a RFC rather than a PATCH.

-- 
Best regards,                                        _     _
| Humble Liege of Serenely Enlightened Majesty of  o' \,=./ `o
| Computer Science,  Michał "mina86" Nazarewicz       (o o)
+----[mina86*mina86.com]---[mina86*jabber.org]----ooO--(_)--Ooo--


WARNING: multiple messages have this Message-ID (diff)
From: "Michał Nazarewicz" <m.nazarewicz@samsung.com>
To: Greg KH <greg@kroah.com>
Cc: linux-arm-kernel@lists.infradead.org,
	linux-media@vger.kernel.org, linux-mm@kvack.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Daniel Walker <dwalker@codeaurora.org>,
	FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>,
	Hans Verkuil <hverkuil@xs4all.nl>,
	Jonathan Corbet <corbet@lwn.net>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Marek Szyprowski <m.szyprowski@samsung.com>,
	Mel Gorman <mel@csn.ul.ie>, Minchan Kim <minchan.kim@gmail.com>,
	Pawel Osciak <p.osciak@samsung.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Russell King <linux@arm.linux.org.uk>,
	Zach Pfeffer <zpfeffer@codeaurora.org>,
	linux-kernel@vger.kernel.org
Subject: Re: [RFCv5 0/9] CMA + VCMM integration
Date: Tue, 07 Sep 2010 03:40:46 +0200	[thread overview]
Message-ID: <op.vim2x8i87p4s8u@localhost> (raw)
In-Reply-To: <20100906210905.GB5863@kroah.com>

On Mon, 06 Sep 2010 23:09:05 +0200, Greg KH <greg@kroah.com> wrote:

> On Mon, Sep 06, 2010 at 08:33:50AM +0200, Michal Nazarewicz wrote:
>> Hello everyone,
>>
>> This patchset introduces a draft of a redesign of Zach Pfeffer's
>> VCMM.
>
> What is a VCMM?

Virtual Contiguous Memory Manager.  The version posted by Zach can
be found at: <http://article.gmane.org/gmane.linux.kernel.mm/50090>.
It is an API for managing IO MMU and IO MMU mappings.

> What is a CMA?

Contiguous Memory Manager.  The v4 version can be found at
<http://marc.info/?l=linux-mm&m=128229799415817&w=2>.  It is an API for
allocating large, physically contiguous blocks of memory.

I haven't expected that anyone who haven't already participated in the
discussion about CMA and VCMM will get interested by this patchset
so I was a bit vague in the cover letter.  Sorry about that.

>> Not all of the functionality of the original VCMM has been
>> ported into this patchset.  This is mostly meant as RFC.  Moreover,
>> the code for VCMM implementation in this RFC has not been tested.

> If you haven't even tested it, why should we review it?

Ignore the code then and look just at the documentation, please.
I wanted to post what I have to receive comments about the general
idea and not necessarily the code itself.  Code is just a mean to show
how I see the implementation of the idea described in the documentation.
Because of all that, I marked the patchset as a RFC rather than a PATCH.

-- 
Best regards,                                        _     _
| Humble Liege of Serenely Enlightened Majesty of  o' \,=./ `o
| Computer Science,  Michał "mina86" Nazarewicz       (o o)
+----[mina86*mina86.com]---[mina86*jabber.org]----ooO--(_)--Ooo--

--
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the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>

  reply	other threads:[~2010-09-07  1:40 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-06  6:33 [RFCv5 0/9] CMA + VCMM integration Michal Nazarewicz
2010-09-06  6:33 ` Michal Nazarewicz
2010-09-06  6:33 ` Michal Nazarewicz
2010-09-06  6:33 ` [RFCv5 1/9] lib: rbtree: rb_root_init() function added Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06  6:33 ` [RFCv5 2/9] mm: cma: Contiguous Memory Allocator added Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06  6:33 ` [RFCv5 3/9] mm: cma: Added SysFS support Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06 21:07   ` Greg KH
2010-09-06 21:07     ` Greg KH
2010-09-06 21:07     ` Greg KH
2010-09-07  5:31     ` Michał Nazarewicz
2010-09-07  5:31       ` Michał Nazarewicz
2010-09-07  5:31       ` Michał Nazarewicz
2010-09-07  6:08       ` Greg KH
2010-09-07  6:08         ` Greg KH
2010-09-07  6:08         ` Greg KH
2010-09-07  6:55         ` Michał Nazarewicz
2010-09-07  6:55           ` Michał Nazarewicz
2010-09-07  6:55           ` Michał Nazarewicz
2010-09-06  6:33 ` [RFCv5 4/9] mm: cma: Added command line parameters support Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06  6:33 ` [RFCv5 5/9] mm: cma: Test device and application added Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06  6:33 ` [RFCv5 6/9] ARM: cma: Added CMA to Aquila, Goni and c210 universal boards Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06  6:33 ` [RFCv5 7/9] mm: vcm: Virtual Contiguous Memory framework added Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-21 16:13   ` Konrad Rzeszutek Wilk
2010-09-21 16:13     ` Konrad Rzeszutek Wilk
2010-09-06  6:33 ` [RFCv5 8/9] mm: vcm: Sample driver added Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06 21:10   ` Greg KH
2010-09-06 21:10     ` Greg KH
2010-09-06 21:10     ` Greg KH
2010-09-07  1:58     ` Michał Nazarewicz
2010-09-07  1:58       ` Michał Nazarewicz
2010-09-07  1:58       ` Michał Nazarewicz
2010-09-06  6:33 ` [RFCv5 9/9] mm: vcm: vcm-cma: VCM CMA " Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06  6:33   ` Michal Nazarewicz
2010-09-06 21:09 ` [RFCv5 0/9] CMA + VCMM integration Greg KH
2010-09-06 21:09   ` Greg KH
2010-09-06 21:09   ` Greg KH
2010-09-07  1:40   ` Michał Nazarewicz [this message]
2010-09-07  1:40     ` Michał Nazarewicz
2010-09-07  1:40     ` Michał Nazarewicz
2010-09-07  2:34     ` Greg KH
2010-09-07  2:34       ` Greg KH
2010-09-07  2:34       ` Greg KH

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