From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756163Ab3KFItr (ORCPT ); Wed, 6 Nov 2013 03:49:47 -0500 Received: from arkanian.console-pimps.org ([212.110.184.194]:46915 "EHLO arkanian.console-pimps.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751921Ab3KFItp (ORCPT ); Wed, 6 Nov 2013 03:49:45 -0500 Date: Wed, 6 Nov 2013 08:49:21 +0000 From: Matt Fleming To: Dave Young Cc: matt.fleming@intel.com, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] efi earlyprintk fix Message-ID: <20131106084921.GA22856@console-pimps.org> References: <20131103121647.GA4770@dhcp-16-126.nay.redhat.com> <20131104103739.GD21688@console-pimps.org> <20131104125853.GB5118@dhcp-16-126.nay.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20131104125853.GB5118@dhcp-16-126.nay.redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 04 Nov, at 08:58:53PM, Dave Young wrote: > On 11/04/13 at 10:37am, Matt Fleming wrote: > > On Sun, 03 Nov, at 08:16:47PM, Dave Young wrote: > > > > > > there's below one line shift problem: > > > > > > ACPI=0xdabfe000 ACPI 2.0=0xdabfe014 SMBIOS=0xdaa9e000 > > > [ 0.000000] efi: > > > > > > In fact check efi_y and the lfb_height should be compared at the begin of the > > > loop of early_efi_write > > > > Hmm... this is interesting. I can't produce this on any of my machines. > > Where did you see this? What hardware? > > It's my laptop Thinkpad T420, the screen scolls very fast, I use boot_delay=500 > to verify it with my patch for moving boot_delay param an early param. Dave, how are you booting your laptop? Are you using grub? Does the earlyprintk output start at the bottom of the screen? Do you set any parameters for efifb? -- Matt Fleming, Intel Open Source Technology Center