cvs commit: src/sys/dev/sound/pci/hda hdac.c

Rong-en Fan grafan at
Fri Mar 16 12:47:02 UTC 2007

On 3/16/07, Ariff Abdullah <ariff at> 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

Rong-En Fan

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

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