On Thu, Oct 10, 2013 at 11:30 PM, Benjamin Herrenschmidt
<b...@kernel.crashing.org> wrote:
> On Thu, 2013-10-10 at 22:26 +0200, Geert Uytterhoeven wrote:
>> > This is not CPUs. CPUs are threads really. Even if they were cores,
>> that
>> > still wouldn't cut it. I'm looking at chips here and not all of them
>> > actually processor chips. The SCOM bus address space is global to a
>> > physical chip and allows to access various resources that are only
>> > remotely related to the cores on it.
>>
>> What about a "bus" for the sideband bus? That allows to decouple it
>> from cores, and allows to support non-processor chips, too?
>
> Not sure what you mean .... create a linux bus type with devices on
> it ?
Yes, that's what I meant.
>From the nodes on that bus you can have symlinks in sysfs to e.g. the CPUs
in the rest of the sysfs tree.
It's a bit like smbus/i2c connecting various peripherals that may also be
connected in some other way (e.g. media devices).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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