From owner-freebsd-current@FreeBSD.ORG  Sat Feb  7 10:22:53 2015
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id EFEEFE0A
 for <current@freebsd.org>; Sat,  7 Feb 2015 10:22:53 +0000 (UTC)
Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1])
 (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 7EAF76AA
 for <current@freebsd.org>; Sat,  7 Feb 2015 10:22:53 +0000 (UTC)
Received: from tom.home (kostik@localhost [127.0.0.1])
 by kib.kiev.ua (8.14.9/8.14.9) with ESMTP id t17AMmsD099809
 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO);
 Sat, 7 Feb 2015 12:22:48 +0200 (EET)
 (envelope-from kostikbel@gmail.com)
DKIM-Filter: OpenDKIM Filter v2.9.2 kib.kiev.ua t17AMmsD099809
Received: (from kostik@localhost)
 by tom.home (8.14.9/8.14.9/Submit) id t17AMl1s099808;
 Sat, 7 Feb 2015 12:22:47 +0200 (EET)
 (envelope-from kostikbel@gmail.com)
X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com
 using -f
Date: Sat, 7 Feb 2015 12:22:47 +0200
From: Konstantin Belousov <kostikbel@gmail.com>
To: Poul-Henning Kamp <phk@phk.freebsd.dk>
Subject: Re: Weird ACPI/DRM messages on -current
Message-ID: <20150207102247.GX42409@kib.kiev.ua>
References: <1938.1423242624@critter.freebsd.dk>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1938.1423242624@critter.freebsd.dk>
User-Agent: Mutt/1.5.23 (2014-03-12)
X-Spam-Status: No, score=-2.0 required=5.0 tests=ALL_TRUSTED,BAYES_00,
 DKIM_ADSP_CUSTOM_MED,FREEMAIL_FROM,NML_ADSP_CUSTOM_MED autolearn=no
 autolearn_force=no version=3.4.0
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on tom.home
Cc: current@freebsd.org
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
 <freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-current>, 
 <mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current/>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
 <mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 07 Feb 2015 10:22:54 -0000

On Fri, Feb 06, 2015 at 05:10:24PM +0000, Poul-Henning Kamp wrote:
> Thinkpad T430s:
> 
> 11.0-CURRENT #15 r278283: Thu Feb  5 22:45:26 UTC 2015
> 
> Anybody know what this means ?
There is no public documentation about renderer power and clock
management. It seems that NDA'ed doc does not contain it either, but I
am not sure if I am allowed to publically state what NDA doc does not
contain.

> 
> Feb  6 17:05:58 critter kernel: error: [drm:pid1090:gen6_sanitize_pm] *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 19070000, was 19000000
> Feb  6 17:06:12 critter kernel: error: [drm:pid1090:gen6_sanitize_pm] *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 19070000, was 19000000
> Feb  6 17:06:18 critter kernel: error: [drm:pid1090:gen6_sanitize_pm] *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 19070000, was 19000000
> Feb  6 17:06:27 critter kernel: error: [drm:pid1090:gen6_sanitize_pm] *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 19070000, was 19000000
> Feb  6 17:06:38 critter kernel: error: [drm:pid1090:gen6_sanitize_pm] *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 19070000, was 19000000
> Feb  6 17:07:15 critter kernel: error: [drm:pid1090:gen6_sanitize_pm] *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 00070000, was 19070000
> Feb  6 17:07:37 critter kernel: error: [drm:pid1090:gen6_sanitize_pm] *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 19070000, was 00000000
> Feb  6 17:07:50 critter kernel: error: [drm:pid1090:gen6_sanitize_pm] *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 19070000, was 19000000
> Feb  6 17:07:58 critter kernel: error: [drm:pid1090:gen6_sanitize_pm] *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 19070000, was 19000000
> Feb  6 17:08:12 critter kernel: error: [drm:pid1090:gen6_sanitize_pm] *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 19070000, was 19000000

These are mostly informational messages, code was taken verbosely from
the Linux kernel.  It seems that later Linux code reorganized code and
get rid of the message.  Some next import will shut down the warnings.