Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753031AbaBQRTl (ORCPT ); Mon, 17 Feb 2014 12:19:41 -0500 Received: from terminus.zytor.com ([198.137.202.10]:59803 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752847AbaBQRTg (ORCPT ); Mon, 17 Feb 2014 12:19:36 -0500 User-Agent: K-9 Mail for Android In-Reply-To: <3121313.GKMnFpiL5h@skinner> References: <4729ad4b8d3342c1b0e29fefe4b04d6a@DB4PR04MB265.eurprd04.prod.outlook.com> <52FE7738.6040009@zytor.com> <3121313.GKMnFpiL5h@skinner> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Subject: Re: AW: AW: [PATCH] x86: HPET force enable for Soekris net6501 From: "H. Peter Anvin" Date: Mon, 17 Feb 2014 09:19:03 -0800 To: Thomas Renninger , Thomas Gleixner CC: Conrad Kostecki , "linux-kernel@vger.kernel.org" , "x86@kernel.org" , "mingo@redhat.com" , "Rafael J. Wysocki" Message-ID: <09d1230f-a261-4858-a390-72df138aaa34@email.android.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org What I gather is that they want to add tables where there are none, and that the ACPI code doesn't play along because there is no RSDP nor any RSDT/XSDT. On February 17, 2014 8:28:05 AM PST, Thomas Renninger wrote: >On Friday, February 14, 2014 10:16:41 PM Thomas Gleixner wrote: >> On Fri, 14 Feb 2014, H. Peter Anvin wrote: >> > On 02/14/2014 11:59 AM, Thomas Gleixner wrote: >> > > On Fri, 14 Feb 2014, H. Peter Anvin wrote: >> > >> On 02/14/2014 11:15 AM, Thomas Gleixner wrote: >> > >>> I'm fine with ACPI tables if we can provide simple means for >embedded >> > >>> users to load one via grub or just attach it to the kernel >image. >> > >> >> > >> That already exists, see >Documentation/acpi/initrd_table_override.txt. >> > > >> > > That requires, that you have already ACPI tables. >> > > >> > > ACPI_SIG_RSDP cannot be overridden and that's the base table you >need >> > > to get ACPI going in the first place. So we need support for that >and >> > > probably for storing the tables at some non canonical place. >> > >> > 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. > >What exactly do you try to achieve? >I cannot imagine a use-case where RSDP and XSDT overriding would help >you. > >Have you tried the current mechanism to override tables? >What is missing and for what do you need it for? > >I need more context, maybe I can help then. > > Thomas -- Sent from my Android phone with K-9 Mail. Please excuse my brevity. -- 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/