Re: [RFCv5 0/9] CMA + VCMM integration

[MichaÅ Nazarewicz]

On Mon, 06 Sep 2010 23:09:05 +0200, Greg KH <greg@xxxxxxxxx> 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,  MichaÅ "mina86" Nazarewicz       (o o)
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