From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755114Ab0HXTFT (ORCPT ); Tue, 24 Aug 2010 15:05:19 -0400 Received: from arroyo.ext.ti.com ([192.94.94.40]:54866 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751661Ab0HXTFQ convert rfc822-to-8bit (ORCPT ); Tue, 24 Aug 2010 15:05:16 -0400 From: "Guzman Lugo, Fernando" To: Felipe Contreras 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" Date: Tue, 24 Aug 2010 14:05:13 -0500 Subject: RE: [PATCH 8/9] dspbridge: add map support for big buffers Thread-Topic: [PATCH 8/9] dspbridge: add map support for big buffers Thread-Index: ActDveHcPkKL5eXsQbyO/EpIjkWjwAAAOygA Message-ID: <496565EC904933469F292DDA3F1663E602F0FA3995@dlee06.ent.ti.com> References: <1277943660-4112-1-git-send-email-x0095840@ti.com> <1277943660-4112-2-git-send-email-x0095840@ti.com> <1277943660-4112-3-git-send-email-x0095840@ti.com> <1277943660-4112-4-git-send-email-x0095840@ti.com> <1277943660-4112-5-git-send-email-x0095840@ti.com> <1277943660-4112-6-git-send-email-x0095840@ti.com> <1277943660-4112-7-git-send-email-x0095840@ti.com> <1277943660-4112-8-git-send-email-x0095840@ti.com> <1277943660-4112-9-git-send-email-x0095840@ti.com> <8F7AF80515AF0D4D93307E594F3CB40E4CAD34D5@dlee03.ent.ti.com> <496565EC904933469F292DDA3F1663E602CBDD3ADE@dlee06.ent.ti.com> <8F7AF80515AF0D4D93307E594F3CB40E4CAD39F6@dlee03.ent.ti.com> <496565EC904933469F292DDA3F1663E602CBDD3BB2@dlee06.ent.ti.com> <496565EC904933469F292DDA3F1663E602F0FA3883@dlee06.ent.ti.com> <496565EC904933469F292DDA3F1663E602F0FA397F@dlee06.ent.ti.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > -----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 > 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 >