Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261873AbTHTKrT (ORCPT ); Wed, 20 Aug 2003 06:47:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261878AbTHTKrT (ORCPT ); Wed, 20 Aug 2003 06:47:19 -0400 Received: from meryl.it.uu.se ([130.238.12.42]:29389 "EHLO meryl.it.uu.se") by vger.kernel.org with ESMTP id S261873AbTHTKrS (ORCPT ); Wed, 20 Aug 2003 06:47:18 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16195.20914.632136.929876@gargle.gargle.HOWL> Date: Wed, 20 Aug 2003 12:47:14 +0200 From: Mikael Pettersson To: Andi Kleen Cc: Vojtech Pavlik , linux-kernel@vger.kernel.org, venkatesh.pallipadi@intel.com Subject: Re: [PATCH][2.6][2/5]Support for HPET based timer In-Reply-To: References: <20030820080513.GB17793@ucw.cz.suse.lists.linux.kernel> X-Mailer: VM 6.90 under Emacs 20.7.1 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1012 Lines: 24 Andi Kleen writes: > Vojtech Pavlik writes: > > > On Tue, Aug 19, 2003 at 05:18:50PM -0700, Pallipadi, Venkatesh wrote: > > > > > Fixmap is for HPET memory map address access. As the timer > > > initialization happen > > > early in the boot sequence (before vm initialization), we need to have > > > fixmap() > > > and fix_to_virt() to access HPET memory map address. > > > > Ahh, yes, you're right. You can't use ioremap at that time. Actually I > > did the same on x86_64 not only because of vsyscalls. > > iirc i386 has an ioremap_early or somesuch. bt_ioremap(). I wrote it to support early DMI scan so DMI data could be used to blacklist BIOSen that break local APICs. This was done pretty much just to handle Dell laptops. - 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/