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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 5:09 AM
> 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 Fri, Jul 2, 2010 at 9:39 PM, Guzman Lugo, Fernando
> <fernando.lugo@ti.com> wrote:
> > I think, it would be good if we get rid of DMMPOOL size, if
> the liked list grow up as it is needed, there is no memory
> penalty of have all the possible iommu addresses valid
> (11000000 - FFFFFFFF). The reservation will only fail when
> there is no memory. If a software restriction is needed we
> could define a start and end addresses for iommu module
> (maybe as a parameter when the iommu handle for iva2 is got)
> and that boundaries can be taking in account at the moment of
> reserve the memory.
>
> What happened to this?
>
> IIUC what you are proposing is to remove the DMM pool
> completely, that makes sense to me. However, is it really
> needed to finish the iommu migration to do this?
>
> > I think the reserve/unreserved dspbridge api can disappear
> and just return the da address in the map function.
>
> This is something I've proposed before, so I agree :)

Yeah, that is how it will be. I have been busy with other stuffs, but now
I have finish a version with all dmm module removed and reserve/unreserve
Api removed as well. But because a the big # of patches merge in dspbrdge
I have to rebase them to the latest, I hope finish this week and send
Them again next week.

Regards,
Fernando.

>
> --
> Felipe Contreras
>

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