Victor Balada Diaz victor at
Tue Feb 26 05:54:30 PST 2008

On Mon, Feb 25, 2008 at 08:07:41AM -0800, Matthew Dillon wrote:
> :Hello Matt,
> :
> :I see a weird issue with snd_hda. It doesn't work on SMP with interrupts.
> :It does work on a UP kernel in the same box, also works on SMP if i
> :enable hw.snd.pcm0.polling. In the output of vmstat -i i don't see any
> :interrupt being generated. Also when i try to play something in SMP
> :mode without polling i get this error on dmesg:
> :
> :pcm0:virtual:0:dsp0.2: play interrupt timeout, channel dead
> :
> :Any idea on what could be wrong and how can i fix it?
> :
> :Thanks.
> :Regards.
>     I'm guessing you are building your SMP box with options APIC_IO ?
>     If so you can try building it without APIC_IO.
>     Interrupt routing is still an area we are very weak in.  That and
>     64 bit support and progress in the SMP locking code.
>     But for the first half of this year and particularly with respect to
>     the mid-year 2.0 release DragonFly needs a distinguishing feature for
>     itself that no other BSD has, and HAMMER is my focus.

I was using APIC_IO. Tried a kernel without it, but doesn't boot. Hangs
during boot.

La prueba más fehaciente de que existe vida inteligente en otros
planetas, es que no han intentado contactar con nosotros. 

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