Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932345AbcLMIyo convert rfc822-to-8bit (ORCPT ); Tue, 13 Dec 2016 03:54:44 -0500 Received: from mx1.redhat.com ([209.132.183.28]:44056 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750801AbcLMIyl (ORCPT ); Tue, 13 Dec 2016 03:54:41 -0500 Message-ID: <1481614569.27088.67.camel@redhat.com> Subject: Re: [RFC PATCH 0/3] staging: remove fbdev drivers From: Gerd Hoffmann To: Benjamin Herrenschmidt Cc: Tomi Valkeinen , linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, Greg Kroah-Hartman , Thomas Petazzoni , Noralf =?ISO-8859-1?Q?Tr=F8nnes?= , Sudip Mukherjee , Teddy Wang , Arnaud Patard , airlied@linux.ie, linux-kernel@vger.kernel.org Date: Tue, 13 Dec 2016 08:36:09 +0100 In-Reply-To: <1481232210.26959.47.camel@kernel.crashing.org> References: <1479888193-23908-1-git-send-email-tomi.valkeinen@ti.com> <1481158879.26959.41.camel@kernel.crashing.org> <035da7a8-5a3f-1ef6-f686-479773e78084@ti.com> <1481232210.26959.47.camel@kernel.crashing.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Mime-Version: 1.0 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Tue, 13 Dec 2016 08:54:41 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 378 Lines: 11 Hi, > Well, I had that argument with Dave Airlie which I CCed. The "dumb" ones like > bochsdrmfb, cirrusdrmfb, astdrmfb ... all use shadowing, meaning they use a > lot more memory and cannot do any 2D acceleration for fbcon. Well, at least for cirrusdrmfb using 2d accel is kida pointless as this only shifts the software bitblit from the kernel to qemu ... cheers, Gerd