From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?VGVyamUgQmVyZ3N0csO2bQ==?= Subject: Re: [PATCH v2 04/10] drm/nouveau/fb: add GK20A support Date: Fri, 2 May 2014 09:26:08 +0300 Message-ID: <53633A80.2040403@nvidia.com> References: <1398060142-7937-1-git-send-email-acourbot@nvidia.com> <1398060142-7937-5-git-send-email-acourbot@nvidia.com> <20140422104052.GB22426@ulmo> <53572077.6090305@nvidia.com> <20140428114437.GK19455@ulmo> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Alexandre Courbot , Thierry Reding Cc: "nouveau@lists.freedesktop.org" , "linux-kernel@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , Ben Skeggs , "linux-tegra@vger.kernel.org" List-Id: linux-tegra@vger.kernel.org On 01.05.2014 07:49, Alexandre Courbot wrote: > Agreed. Besides I hope the day won't come where we have to go through > 2 layers of memory translation for the GPU... That's actually the method of operation that gives us the best performance. GPU likes big pages, and without IOMMU translation you'd have a hard time finding enough contiguous physical memory. Terje