From owner-cvs-all@FreeBSD.ORG  Fri Mar 16 12:47:02 2007
Return-Path: <owner-cvs-all@FreeBSD.ORG>
X-Original-To: cvs-all@freebsd.org
Delivered-To: cvs-all@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id CD02816A40D
	for <cvs-all@freebsd.org>; Fri, 16 Mar 2007 12:47:02 +0000 (UTC)
	(envelope-from grafan@gmail.com)
Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.186])
	by mx1.freebsd.org (Postfix) with ESMTP id 3BE8413C4C2
	for <cvs-all@freebsd.org>; Fri, 16 Mar 2007 12:47:02 +0000 (UTC)
	(envelope-from grafan@gmail.com)
Received: by nf-out-0910.google.com with SMTP id k27so223346nfc
	for <cvs-all@freebsd.org>; Fri, 16 Mar 2007 05:47:01 -0700 (PDT)
DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta;
	h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references;
	b=JWv8JLQ0q0DtURrJTo7BNzL5OsBeEXO6AKYHcBSJcgIVroCd8bYvdvaOP6ocyU/lnId0zMCkZ6+Keyog1J/YqUAcVxyeKqcTp2wnDLJ2eSooaGPmBBm4pHNnYAPVQ0SEwa8yneDrbeMZPw89qD3AhAfUT0BopX79kZTP1L26evk=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta;
	h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references;
	b=R3ct+x30gvKr3QIUSLrZqu0ZCTAP5NV2YbSSLIfzRuO6/m+IQeMrN7MONU5Lso39X9Nm8tv9/u2FJlfI/+VLLf9cpx7CrjMwScqNAzHKsQrxrr4ONNs63iFu/qP5R7VAWpGYFaOdFil3G6RitnToddS0wMFl216azSjQGl2mVqc=
Received: by 10.78.203.13 with SMTP id a13mr948519hug.1174049220818;
	Fri, 16 Mar 2007 05:47:00 -0700 (PDT)
Received: by 10.78.202.1 with HTTP; Fri, 16 Mar 2007 05:47:00 -0700 (PDT)
Message-ID: <6eb82e0703160547p23dfe24ej79401d4ed7591769@mail.gmail.com>
Date: Fri, 16 Mar 2007 20:47:00 +0800
From: "Rong-en Fan" <grafan@gmail.com>
To: "Ariff Abdullah" <ariff@freebsd.org>
In-Reply-To: <200703151723.l2FHNdOl014188@repoman.freebsd.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <200703151723.l2FHNdOl014188@repoman.freebsd.org>
Cc: cvs-src@freebsd.org, Bruno Damour <freebsd@ruomad.net>,
	src-committers@freebsd.org,
	Alexandre Sunny Kovalenko <alex.kovalenko@verizon.net>, cvs-all@freebsd.org
Subject: Re: cvs commit: src/sys/dev/sound/pci/hda hdac.c
X-BeenThere: cvs-all@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: CVS commit messages for the entire tree <cvs-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-all>
List-Post: <mailto:cvs-all@freebsd.org>
List-Help: <mailto:cvs-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 16 Mar 2007 12:47:02 -0000

On 3/16/07, Ariff Abdullah <ariff@freebsd.org> wrote:
> ariff       2007-03-15 17:23:39 UTC
>
>   FreeBSD src repository
>
>   Modified files:
>     sys/dev/sound/pci/hda hdac.c
>   Log:
>   NOOP (for now) for hdac_dma_nocache(). It is a wrong way to enforce
>   cache coherency, besides of causing train wreck in other places
>   (especially on amd64, possibly on i386).
>
>   Discussed with: kib@, rafan@
>   Tested by:      rafan@

Thank you! Now I can really use this laptop.

By the way, I guess this may also solve these two problems reported
on -current some time ago:

Bruno Damour: buildworld with core2 duo fails with page fault while in
kernel mode

Alexandre Sunny Kovalenko: -CURRENT panics on intensive fs operations

Regards,
Rong-En Fan

>   Revision  Changes    Path
>   1.27      +3 -1      src/sys/dev/sound/pci/hda/hdac.c