Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751816AbdHSKqp (ORCPT ); Sat, 19 Aug 2017 06:46:45 -0400 Received: from mail.kapsi.fi ([91.232.154.25]:41809 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751329AbdHSKqo (ORCPT ); Sat, 19 Aug 2017 06:46:44 -0400 Subject: Re: [PATCH 2/4] gpu: host1x: Enable gather filter To: Dmitry Osipenko , Mikko Perttunen , thierry.reding@gmail.com, jonathanh@nvidia.com Cc: dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org References: <20170818161553.27597-1-mperttunen@nvidia.com> <20170818161553.27597-3-mperttunen@nvidia.com> From: Mikko Perttunen Message-ID: <64de3b3b-7c9e-54e9-49f4-d89b3d2c5f21@kapsi.fi> Date: Sat, 19 Aug 2017 13:46:42 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 86.115.6.181 X-SA-Exim-Mail-From: cyndis@kapsi.fi X-SA-Exim-Scanned: No (on mail.kapsi.fi); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 764 Lines: 21 On 08/19/2017 01:42 PM, Dmitry Osipenko wrote: > On 18.08.2017 19:15, Mikko Perttunen wrote: >> The gather filter is a feature present on Tegra124 and newer where the >> hardware prevents GATHERed command buffers from executing commands >> normally reserved for the CDMA pushbuffer which is maintained by the >> kernel driver. >> >> This commit enables the gather filter on all supporting hardware. >> >> Signed-off-by: Mikko Perttunen >> --- > > TRM says that "Invalid Gbuffer cmd" interrupt would be raised when filtering > happens. Is that interrupt disabled by default or it would cause 'unhandled > interrupt'? > It's disabled by default. Jobs that are stopped by the filter are then handled by the usual timeout mechanism. Mikko