Re: what's next for the linux kernel?

[Alan Cox]

On Llu, 2005-10-03 at 22:07 +0100, Luke Kenneth Casson Leighton wrote:
>  made?  _cool_.  actual hardware.  new knowledge for me.  do you know
>  of any online references, papers or stuff?  [btw just to clarify:
>  you're saying you have a NUMA bus or you're saying you have an
>  augmented SMP+NUMA+separate-parallel-message-passing-bus er .. thing]

Its a standard current Intel feature. See "mwait" in the processor
manual. The CPUs are also smart enough to do cache to cache transfers.
No special hardware no magic.

And unless I want my messages to cause interrupts and wake events (in
which case the APIC does it nicely) then any locked operation on memory
will do the job just fine. I don't need funky hardware on a system. The
first point I need funky hardware is between boards and that isn't
consumer any more.

Alan

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/