From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754476Ab0IVS0Y (ORCPT ); Wed, 22 Sep 2010 14:26:24 -0400 Received: from mga14.intel.com ([143.182.124.37]:60212 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754062Ab0IVS0Y (ORCPT ); Wed, 22 Sep 2010 14:26:24 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.57,219,1283756400"; d="scan'208";a="327562978" Message-ID: <4C9A4A4F.3060909@linux.intel.com> Date: Wed, 22 Sep 2010 11:26:23 -0700 From: "H. Peter Anvin" Organization: Intel Open Source Technology Center User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.9) Gecko/20100907 Fedora/3.1.3-1.fc13 Thunderbird/3.1.3 MIME-Version: 1.0 To: Bjorn Helgaas CC: "H. Peter Anvin" , mingo@redhat.com, linux-kernel@vger.kernel.org, yinghai@kernel.org, just.for.lkml@googlemail.com, tglx@linutronix.de, Feng Tang , Alan Cox , greg@kroah.com Subject: Re: Early console confusion References: <4C7B0578.8090807@kernel.org> <201009221044.58735.bjorn.helgaas@hp.com> <4C9A3487.6080005@zytor.com> <201009221222.00475.bjorn.helgaas@hp.com> In-Reply-To: <201009221222.00475.bjorn.helgaas@hp.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/22/2010 11:21 AM, Bjorn Helgaas wrote: > > I think earlycon and earlyprintk have minimal backwards compatibility > problems, since they're mostly for developers. And if we decided > we did need to keep them, they could be undocumented and implemented > on top of "console=" with the appropriate explicit device. > The problem is that they're actually hard-coded into the firmware of some embedded devices. -hpa