From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 25 Jan 2001 18:11:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 25 Jan 2001 18:11:05 -0500 Received: from neon-gw.transmeta.com ([209.10.217.66]:33551 "EHLO neon-gw.transmeta.com") by vger.kernel.org with ESMTP id ; Thu, 25 Jan 2001 18:10:53 -0500 Message-ID: <3A70B26C.16DC1C29@transmeta.com> Date: Thu, 25 Jan 2001 15:10:36 -0800 From: "H. Peter Anvin" Organization: Transmeta Corporation X-Mailer: Mozilla 4.76 [en] (X11; U; Linux 2.4.0 i686) X-Accept-Language: en, sv, no, da, es, fr, ja MIME-Version: 1.0 To: root@chaos.analogic.com CC: Matthew Dharm , "H. Peter Anvin" , linux-kernel@vger.kernel.org Subject: Re: Linux Post codes during runtime, possibly OT In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org "Richard B. Johnson" wrote: > > On Thu, 25 Jan 2001, H. Peter Anvin wrote: > > > Matthew Dharm wrote: > > > > > > It occurs to me that it might be a good idea to pick a different port for > > > these things. I know a lot of people who want to use port 80h for > > > debugging data, especially in embedded x86 systems. > > > > > > > Find a safe port, make sure it is tested the hell out of, and we'll > > consider it. > > > > -hpa > > > > You could use the DMA scratch register at 0x19. I'm sure Linux doesn't > "save" stuff there when setting up the DMA controller. > Does that break the BIOS in any way, shape, or form? Again, someone gets to make a patch and then test the hell out of it... and find the random Olivetti which hooks the screen up to the A20M# signal and other weird crap. -hpa -- at work, in private! "Unix gives you enough rope to shoot yourself in the foot." http://www.zytor.com/~hpa/puzzle.txt - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/