Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752542Ab2K3Hkw (ORCPT ); Fri, 30 Nov 2012 02:40:52 -0500 Received: from hqemgate03.nvidia.com ([216.228.121.140]:19980 "EHLO hqemgate03.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751390Ab2K3Hku (ORCPT ); Fri, 30 Nov 2012 02:40:50 -0500 X-PGP-Universal: processed; by hqnvupgp06.nvidia.com on Thu, 29 Nov 2012 23:40:28 -0800 Message-ID: <50B863E4.50700@nvidia.com> Date: Fri, 30 Nov 2012 09:44:36 +0200 From: =?UTF-8?B?VGVyamUgQmVyZ3N0csO2bQ==?= User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121028 Thunderbird/16.0.2 MIME-Version: 1.0 To: Thierry Reding CC: Lucas Stach , Dave Airlie , "linux-tegra@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , "linux-kernel@vger.kernel.org" , Arto Merilainen Subject: Re: [RFC v2 8/8] drm: tegra: Add gr2d device References: <50B60EFF.1050703@nvidia.com> <1354109602.1479.66.camel@tellur> <50B61845.6060102@nvidia.com> <1354111565.1479.73.camel@tellur> <50B6237B.8010808@nvidia.com> <1354115609.1479.91.camel@tellur> <50B63A70.8020107@nvidia.com> <1354128408.1479.137.camel@tellur> <50B71A28.5060807@nvidia.com> <1354180153.1479.162.camel@tellur> <20121129121430.GA3846@avionic-0098.adnet.avionic-design.de> In-Reply-To: <20121129121430.GA3846@avionic-0098.adnet.avionic-design.de> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 896 Lines: 20 On 29.11.2012 14:14, Thierry Reding wrote: > On Thu, Nov 29, 2012 at 10:09:13AM +0100, Lucas Stach wrote: >> This way you would also be able to construct different handles (like GEM >> obj or V4L2 buffers) from the same backing nvhost object. Note that I'm >> not sure how useful this would be, but it seems like a reasonable design >> to me being able to do so. > > Wouldn't that be useful for sharing buffers between DRM and V4L2 using > dma-buf? I'm not very familiar with how exactly importing and exporting > work with dma-buf, so maybe I need to read up some more. I would still preserve the dma-buf support, for exactly this purpose. Terje -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/