From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt Subject: Re: radeonfb_pci_register video memory clear? Date: Wed, 23 Jun 2004 10:52:57 -0500 Sender: linux-fbdev-devel-admin@lists.sourceforge.net Message-ID: <1088005977.1854.140.camel@gaston> References: <40D3A2E1.2060100@undead.cc> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1BdAAc-00040K-Fs for linux-fbdev-devel@lists.sourceforge.net; Wed, 23 Jun 2004 09:00:18 -0700 Received: from gate.crashing.org ([63.228.1.57]) by sc8-sf-mx2.sourceforge.net with esmtp (TLSv1:AES256-SHA:256) (Exim 4.30) id 1BdAAc-00018h-2Y for linux-fbdev-devel@lists.sourceforge.net; Wed, 23 Jun 2004 09:00:18 -0700 In-Reply-To: <40D3A2E1.2060100@undead.cc> Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: John Zielinski Cc: Linux Frame Buffer Device Development On Fri, 2004-06-18 at 21:20, John Zielinski wrote: > I'm just wondering why the clearing of video memory was added to > radeonfb_pci_register? The memory still belongs to vgacon at this > point. There are a few other problems with this: there is a noticable > delay while the screen is totaly blank, vgacon can't save the text > screen to the shadow buffer, and all further output until the takeover > is invisible (vga font is wiped) so an oops here wouldn't be readable. I added that to fix reports of users complaining they had garbage displayed on boot. I didn't think about the interaction with vgacon (see, I have absolutely no legacy hardware doing crappy VGA mode ;) Maybe that should be reversed .... Ben. ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com