From owner-cvs-src@FreeBSD.ORG  Sat Mar 24 10:05:30 2007
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Date: Sat, 24 Mar 2007 10:37:10 +0100
From: Bruno Damour <roundup@ruomad.net>
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To: Rong-en Fan <grafan@gmail.com>
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Cc: src-committers@freebsd.org, Ariff Abdullah <ariff@freebsd.org>,
	cvs-src@freebsd.org, Bruno Damour <freebsd@ruomad.net>,
	cvs-all@freebsd.org, Alexandre Sunny Kovalenko <alex.kovalenko@verizon.net>
Subject: Re: cvs commit: src/sys/dev/sound/pci/hda hdac.c
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Rong-en Fan wrote:
> 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
Hello,
Thank you very much for mailing me your changes...
I cannot confirm that it fixes my issue, as I was imatient (or patient)
enough to rebuild everything from scratch on my new MB. The problem did
not show again, so...

Thanks anyway,

bruno