Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755490AbZFTKWt (ORCPT ); Sat, 20 Jun 2009 06:22:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750900AbZFTKWl (ORCPT ); Sat, 20 Jun 2009 06:22:41 -0400 Received: from smtp.eu.citrix.com ([62.200.22.115]:55707 "EHLO SMTP.EU.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750836AbZFTKWl (ORCPT ); Sat, 20 Jun 2009 06:22:41 -0400 X-IronPort-AV: E=Sophos;i="4.42,258,1243814400"; d="scan'208";a="5824194" User-Agent: Microsoft-Entourage/12.19.0.090515 Date: Sat, 20 Jun 2009 11:22:38 +0100 Subject: Re: [Xen-devel] Re: [PATCH RFC] x86/acpi: don't ignore I/O APICs just because there's no local APIC From: Keir Fraser To: "Tian, Kevin" , "Eric W. Biederman" CC: Jeremy Fitzhardinge , Xen-devel , the arch/x86 maintainers , Linux Kernel Mailing List , Ingo Molnar , "Nakajima, Jun" , "H. Peter Anvin" , Thomas Gleixner , Len Brown Message-ID: Thread-Topic: [Xen-devel] Re: [PATCH RFC] x86/acpi: don't ignore I/O APICs just because there's no local APIC Thread-Index: AcnxgECFuUm7zR6rT+uZmFUuvQQfLgAAHqXwAAQTeJc= In-Reply-To: <0A882F4D99BBF6449D58E61AAFD7EDD62F1B68F3@pdsmsx502.ccr.corp.intel.com> Mime-version: 1.0 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit X-OriginalArrivalTime: 20 Jun 2009 10:22:43.0235 (UTC) FILETIME=[0C19F730:01C9F191] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 893 Lines: 21 On 20/06/2009 09:57, "Tian, Kevin" wrote: > So the real trouble is ACPI , which encode all platform bits if > they're not included in any existing BUS spec, such as power, > thermal, processor, battery, PCI routing, hotplug, EC, etc. Some > are owned by dom0 and some by Xen. However ACPI's AML encoding > makes automatic division between two categories really difficult. Yes, we share the same lament regarding ACPI. I'm not sure what the best (cleanest, simplest, whatever) solution really is going forward. We're certainly happy to make quite fundamental changes in Xen if there is sufficient win to be had. -- Keir -- 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/