From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756623Ab0EYMjV (ORCPT ); Tue, 25 May 2010 08:39:21 -0400 Received: from cavan.codon.org.uk ([93.93.128.6]:55747 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754858Ab0EYMjT (ORCPT ); Tue, 25 May 2010 08:39:19 -0400 Date: Tue, 25 May 2010 13:39:05 +0100 From: Matthew Garrett To: "Yu, Luming" Cc: Len Brown , Philip Langdale , Jeff Garrett , Andi Kleen , Linux Kernel Mailing List , "linux-acpi@vger.kernel.org" , "venki@google.com" Subject: Re: acpi_idle: Very idle Core i7 machine never enters C3 Message-ID: <20100525123905.GB7876@srcf.ucam.org> References: <87y6jkee1b.fsf@basil.nowhere.org> <20100205160900.GA2736@jgarrett.org> <20100426194002.586fbaa5@fido5> <20100427124703.GA16706@jgarrett.org> <20100430174447.GA14889@srcf.ucam.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.18 (2008-05-17) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, May 25, 2010 at 01:59:39PM +0800, Yu, Luming wrote: > On some platforms like NHM-EX, I was told that it's a NOP, > But I might be given wrong information at that time when I wrote that patch. > > IIRC, acpi spec just say it's optional.. Implementing it is optional, but the spec implies that it should be used if it's present. -- Matthew Garrett | mjg59@srcf.ucam.org