From owner-freebsd-doc@FreeBSD.ORG Sat May 29 10:30:09 2010 Return-Path: Delivered-To: freebsd-doc@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 56238106567D for ; Sat, 29 May 2010 10:30:09 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (unknown [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 2BBF08FC0C for ; Sat, 29 May 2010 10:30:09 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.4/8.14.4) with ESMTP id o4TAU9Ub039946 for ; Sat, 29 May 2010 10:30:09 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id o4TAU93H039943; Sat, 29 May 2010 10:30:09 GMT (envelope-from gnats) Resent-Date: Sat, 29 May 2010 10:30:09 GMT Resent-Message-Id: <201005291030.o4TAU93H039943@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-doc@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Tobias Rehbein Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2C0961065674; Sat, 29 May 2010 10:28:28 +0000 (UTC) (envelope-from tobias.rehbein@web.de) Received: from fmmailgate03.web.de (fmmailgate03.web.de [217.72.192.234]) by mx1.freebsd.org (Postfix) with ESMTP id AFA208FC08; Sat, 29 May 2010 10:28:27 +0000 (UTC) Received: from smtp01.web.de ( [172.20.0.243]) by fmmailgate03.web.de (Postfix) with ESMTP id 42EEB15377F65; Sat, 29 May 2010 12:28:26 +0200 (CEST) Received: from [95.88.228.74] (helo=sushi.pseudo.local) by smtp01.web.de with asmtp (TLSv1:AES256-SHA:256) (WEB.DE 4.110 #4) id 1OIJHG-0004ov-00; Sat, 29 May 2010 12:28:26 +0200 Received: from sushi.pseudo.local (localhost [127.0.0.1]) by sushi.pseudo.local (8.14.3/8.14.3) with ESMTP id o4TASPqr006912; Sat, 29 May 2010 12:28:25 +0200 (CEST) (envelope-from tobi@sushi.pseudo.local) Received: (from tobi@localhost) by sushi.pseudo.local (8.14.3/8.14.3/Submit) id o4TASPmw006911; Sat, 29 May 2010 12:28:25 +0200 (CEST) (envelope-from tobi) Message-Id: <201005291028.o4TASPmw006911@sushi.pseudo.local> Date: Sat, 29 May 2010 12:28:25 +0200 (CEST) From: Tobias Rehbein Sender: tobias.rehbein@web.de To: FreeBSD-gnats-submit@FreeBSD.org X-Send-Pr-Version: 3.113 Cc: mav@FreeBSD.org Subject: docs/147180: Fix manpage of acpi(4): No need to disable the whole APIC subsystem for CPU idle states C3 and deeper X-BeenThere: freebsd-doc@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Tobias Rehbein List-Id: Documentation project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 29 May 2010 10:30:09 -0000 >Number: 147180 >Category: docs >Synopsis: Fix manpage of acpi(4): No need to disable the whole APIC subsystem for CPU idle states C3 and deeper >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-doc >State: open >Quarter: >Keywords: >Date-Required: >Class: doc-bug >Submitter-Id: current-users >Arrival-Date: Sat May 29 10:30:08 UTC 2010 >Closed-Date: >Last-Modified: >Originator: Tobias Rehbein >Release: FreeBSD 8.0-RELEASE-p2 i386 >Organization: >Environment: System: FreeBSD sushi.pseudo.local 8.0-RELEASE-p2 FreeBSD 8.0-RELEASE-p2 #5: Fri Jan 15 19:16:49 CET 2010 tobi@sushi.pseudo.local:/usr/obj/usr/src/sys/SUSHI i386 >Description: Since http://svn.freebsd.org/changeset/base/191720 it's no longer needed to disable the whole APIC subsystem to use CPU idle states C3 and deeper, it's sufficient to disable the LAPIC timer. I cc'ed mav@ who implemented this feature to veto this PR if my statement is invalid. Also I'm quite sure the LAPIC conflicts are not relevant for CPU idle state C2 but only for C3 and deeper. >How-To-Repeat: >Fix: --- share_man_man4_acpi.4.diff begins here --- --- /usr/src/share/man/man4/acpi.4 2009-11-26 20:09:36.000000000 +0100 +++ share/man/man4/acpi.4 2010-05-29 12:16:21.000000000 +0200 @@ -592,10 +592,8 @@ .Nm CPU idle power management drive conflicts with the local APIC (LAPIC) timer. -Disable APIC mode with -.Va hint.apic.0.disabled +Disable the local APIC timer with +.Va hint.apic.0.clock=0 or do not use the -.Li C2 -and .Li C3 -states if APIC mode is enabled. +and deeper states if the local APIC timer is enabled. --- share_man_man4_acpi.4.diff ends here --- >Release-Note: >Audit-Trail: >Unformatted: