From owner-svn-src-head@FreeBSD.ORG  Wed Mar 21 19:02:22 2012
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@freebsd.org
Received: from [127.0.0.1] (freefall.freebsd.org [IPv6:2001:4f8:fff6::28])
	by hub.freebsd.org (Postfix) with ESMTP id 20567106566B;
	Wed, 21 Mar 2012 19:02:22 +0000 (UTC)
	(envelope-from jkim@FreeBSD.org)
From: Jung-uk Kim <jkim@FreeBSD.org>
To: Andriy Gapon <avg@freebsd.org>
Date: Wed, 21 Mar 2012 15:02:11 -0400
User-Agent: KMail/1.6.2
References: <201203202037.q2KKbNfK037014@svn.freebsd.org>
	<201203211341.11859.jkim@FreeBSD.org>
	<4F6A1673.4050408@FreeBSD.org>
In-Reply-To: <4F6A1673.4050408@FreeBSD.org>
MIME-Version: 1.0
Content-Disposition: inline
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Message-Id: <201203211502.14353.jkim@FreeBSD.org>
Cc: Konstantin Belousov <kostikbel@gmail.com>,
	"svn-src-head@freebsd.org" <svn-src-head@freebsd.org>,
	"svn-src-all@freebsd.org" <svn-src-all@freebsd.org>,
	"src-committers@freebsd.org" <src-committers@freebsd.org>
Subject: Re: svn commit: r233249 - head/sys/amd64/acpica
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
	<svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 21 Mar 2012 19:02:22 -0000

On Wednesday 21 March 2012 01:57 pm, Andriy Gapon wrote:
> on 21/03/2012 19:41 Jung-uk Kim said the following:
> > I am well aware of the problem.  In fact, that's why I had to
> > merge ACPICA 20120320 rather quickly, which added a new flag to
> > not execute _GTS method.  Both _GTS and _BFS are turned off by
> > default.  You can control them with a new tunable
> > "debug.acpi.sleep_flags" if you want.
>
> But the bug still has to be fixed, right?
> Even if it takes a non-default sysctl value to give the bug a
> chance.

Ideally, yes.  However, I am not so sure if we can call it a "bug" 
because AcpiEnterSleepState() must be called with interrupt disabled 
and there is no way to change that API without breaking other OSes.  
We can only work around it locally or persuade upstream to find a 
better way to do this in ACPICA itself.  Either way, it will be 
pretty hackish. :-(

Jung-uk Kim