Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752982AbaBNVra (ORCPT ); Fri, 14 Feb 2014 16:47:30 -0500 Received: from www.linutronix.de ([62.245.132.108]:45000 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752354AbaBNVr3 (ORCPT ); Fri, 14 Feb 2014 16:47:29 -0500 Date: Fri, 14 Feb 2014 22:47:32 +0100 (CET) From: Thomas Gleixner To: "H. Peter Anvin" cc: Conrad Kostecki , "linux-kernel@vger.kernel.org" , "x86@kernel.org" , "mingo@redhat.com" , "Rafael J. Wysocki" , Thomas Renninger Subject: Re: AW: AW: [PATCH] x86: HPET force enable for Soekris net6501 In-Reply-To: <52FE8817.4000504@zytor.com> Message-ID: References: <4729ad4b8d3342c1b0e29fefe4b04d6a@DB4PR04MB265.eurprd04.prod.outlook.com> <52FE5683.6030708@zytor.com> <52FE5BB6.9070405@zytor.com> <1051d374173243b2828efcd21f60ac36@DB4PR04MB265.eurprd04.prod.outlook.com> <52FE5D91.6060005@zytor.com> <52FE5ED4.4040508@zytor.com> <52FE6DEF.1050607@zytor.com> <52FE7738.6040009@zytor.com> <52FE8817.4000504@zytor.com> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 14 Feb 2014, H. Peter Anvin wrote: > On 02/14/2014 01:16 PM, Thomas Gleixner wrote: > >> > >> Well, the RSDP and RSDT/XSDT are nothing but pointers to other tables, > >> so if explicitly overridden I'm not sure if one actually would need > >> them. That doesn't mean our current code will work without them, though. > > > > I tried once to overload all of the tables, but failed miserably in > > the ACPI dungeon. RSDP was the major pain point IIRC. > > > > I suspect we need to handle the RSDP and RSDT/XSDT specially, since, > again, they are really just pointers to where to find the other tables. > They are part of the discovery, not the data. I'm aware of that and I tried to hack around it but failed miserably due to lack of masochism. It was simpler to abuse the DT stuff to get things done. :) Thanks, tglx -- 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/