From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754465AbaBQTZZ (ORCPT ); Mon, 17 Feb 2014 14:25:25 -0500 Received: from cantor2.suse.de ([195.135.220.15]:47844 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754450AbaBQTZY (ORCPT ); Mon, 17 Feb 2014 14:25:24 -0500 From: Thomas Renninger To: "H. Peter Anvin" Cc: Thomas Gleixner , Conrad Kostecki , "linux-kernel@vger.kernel.org" , "x86@kernel.org" , "mingo@redhat.com" , "Rafael J. Wysocki" , devel@acpica.org Subject: Re: AW: AW: [PATCH] x86: HPET force enable for Soekris net6501 Date: Mon, 17 Feb 2014 20:25:18 +0100 Message-ID: <4233973.R9Tf84J4Ne@skinner> User-Agent: KMail/4.11.4 (Linux/3.11.6-4-desktop; KDE/4.11.4; x86_64; ; ) In-Reply-To: <53025956.40505@zytor.com> References: <4729ad4b8d3342c1b0e29fefe4b04d6a@DB4PR04MB265.eurprd04.prod.outlook.com> <1678556.oPQNyVF84j@skinner> <53025956.40505@zytor.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Monday, February 17, 2014 10:47:50 AM H. Peter Anvin wrote: > On 02/17/2014 10:23 AM, Thomas Renninger wrote: > > Easiest I can think of instead of trying to modify RSDP or similar, is > > to still pass the tables via unzipped, glued cpio which the kernel > > can access early. The same way it is done for current ACPI table > > overriding > > and early microcode passing. > > We shouldn't *need* an RSDP and RSDT/XSDT, though, since all they are > are pointers to the actual tables. Rather than hacking around it we > should probably just fix the fundamental problem. That is what I described. If something similar what I wrote gets implemented, you can simply add ACPI tables to initrd as described here: Documentation/acpi/initrd_table_override.txt and if BIOS already provides them they get overridden, otherwise they get added. Thomas