Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266386AbUJRMUc (ORCPT ); Mon, 18 Oct 2004 08:20:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266427AbUJRMUb (ORCPT ); Mon, 18 Oct 2004 08:20:31 -0400 Received: from hirsch.in-berlin.de ([192.109.42.6]:1420 "EHLO hirsch.in-berlin.de") by vger.kernel.org with ESMTP id S266386AbUJRMUU (ORCPT ); Mon, 18 Oct 2004 08:20:20 -0400 X-Envelope-From: kraxel@bytesex.org Date: Mon, 18 Oct 2004 14:10:33 +0200 From: Gerd Knorr To: linux-fbdev-devel@lists.sourceforge.net, Linux Kernel Development , penguinppc-team@lists.penguinppc.org Subject: Re: [Linux-fbdev-devel] Generic VESA framebuffer driver and Video card BOOT? Message-ID: <20041018121033.GB5106@bytesex> References: <416E6ADC.3007.294DF20D@localhost> <87d5zkqj8h.fsf@bytesex.org> <87y8i8p1jq.fsf@bytesex.org> <20041017120728.GC10532@admingilde.org> <20041018083632.GE3065@bytesex> <20041018113929.GB3618@admingilde.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20041018113929.GB3618@admingilde.org> User-Agent: Mutt/1.5.6i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 916 Lines: 24 On Mon, Oct 18, 2004 at 01:39:29PM +0200, Martin Waitz wrote: > hi :) > > > Whenever writing to the gfx memory before finishing the initialization > > is harmless or not probably depends on the hardware, I'd better not > > count on it ... > > when the application tries to access the framebuffer memory then > the driver is asked to map the corresponding page. On first access only, and even that only if the driver doesn't map the pages at mmap() time already. Not a single fb driver seems to map the pages lazy today, grepping in drivers/video for nopage handles shows nothing. I'm not sure you can actually do that for iomem mappings. Gerd -- return -ENOSIG; - 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/