linux-kernel - RE: [PATCH 8/9] dspbridge: add map support for big buffers

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Date:	Wed, 25 Aug 2010 11:00:52 -0500
From:	"Guzman Lugo, Fernando" <fernando.lugo@...com>
To:	Felipe Contreras <felipe.contreras@...il.com>
CC:	"Kanigeri, Hari" <h-kanigeri2@...com>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"ohad@...ery.com" <ohad@...ery.com>,
	"hiroshi.doyu@...ia.com" <hiroshi.doyu@...ia.com>,
	"ameya.palande@...ia.com" <ameya.palande@...ia.com>,
	"felipe.contreras@...ia.com" <felipe.contreras@...ia.com>
Subject: RE: [PATCH 8/9] dspbridge: add map support for big buffers

 

> -----Original Message-----
> From: Felipe Contreras [mailto:felipe.contreras@...il.com] 
> Sent: Wednesday, August 25, 2010 1:06 AM
> To: Guzman Lugo, Fernando
> Cc: Kanigeri, Hari; linux-omap@...r.kernel.org; 
> linux-kernel@...r.kernel.org; ohad@...ery.com; 
> hiroshi.doyu@...ia.com; ameya.palande@...ia.com; 
> felipe.contreras@...ia.com
> Subject: Re: [PATCH 8/9] dspbridge: add map support for big buffers
> 
> On Wed, Aug 25, 2010 at 12:55 AM, Guzman Lugo, Fernando 
> <fernando.lugo@...com> wrote:
> >> However, from what I can see iovmm can be used instead of 
> dmm even if 
> >> the switch to iommu is not yet there.
> >
> > Iovmm have a list of memory used (reserved, that is what dmm module
> > does) and also maps the buffer, So we can not use iovmm without 
> > removing The mapping which is done inside dspbridge because it will 
> > conflic with The mapping doing inside iovmm module. So that 
> means for 
> > using iovmm, the Mapping in dspbridge had to be removed in 
> order to work properly.
> 
> Or the whole iovmm.c can be copied and just remove the mapping.

That is the migration patches do, remove custom bridge mapping and
use iovmm module instead.

Regards,
Fernando.

> 
> --
> Felipe Contreras
> --
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