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SubjectRE: [PATCH 8/9] dspbridge: add map support for big buffers


> -----Original Message-----
> From: Felipe Contreras [mailto:felipe.contreras@gmail.com]
> Sent: Tuesday, August 24, 2010 1:55 PM
> To: Guzman Lugo, Fernando
> Cc: Kanigeri, Hari; linux-omap@vger.kernel.org;
> linux-kernel@vger.kernel.org; ohad@wizery.com;
> hiroshi.doyu@nokia.com; ameya.palande@nokia.com;
> felipe.contreras@nokia.com
> Subject: Re: [PATCH 8/9] dspbridge: add map support for big buffers
>
> On Tue, Aug 24, 2010 at 9:44 PM, Guzman Lugo, Fernando
> <fernando.lugo@ti.com> wrote:
> >> However, I still have the question about the dependency on iommu;
> >> AFAICS the DMM removal doesn't depend on the migration to iommu,
> >> which AFAIK has been stalled for some time.
> >
> > Yeah, DMM removal does not depend on iommu migration.
> However, After
> > the changes for iommu migration the DMM module is not
> Needed anymore,
> > so it is better to remove it too.
>
> Yes, but there are two options:
>
> a) 1. Migrate to iommu, 2. Remove DMM
>
> or:
>
> b) 1. Remove DMM, 2. Migrate to iommu
>
> I've heard there are some problems regarding DMM, and since
> you say you have already done the changes, and since iommu
> migration is not yet ready AFAIK, it might make sense to go
> for option b).
>
> Anyway, thanks for the clarification :)

But DMM is used in this momment, it is after the IOMMU migration
When DMM is not needed anymore. So we need to go for option a).

Regards,
Fernando.

>
> --
> Felipe Contreras
>

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