[PATCH 05/10] ARM: zx: bring up the secondary core

Arnd Bergmann arnd at arndb.de
Sat Mar 14 14:25:03 PDT 2015


On Saturday 14 March 2015 19:49:40 Jun Nie wrote:
> +
> +       /*
> +        * This is really belt and braces; we hold unintended secondary
> +        * CPUs in the holding pen until we're ready for them.  However,
> +        * since we haven't sent them a soft interrupt, they shouldn't
> +        * be there.
> +        */
> +       write_pen_release(cpu);
> +
> 

Why do you need the holding pen on this platform? Is there a firmware
bug or just missing hardware support for proper SMP power management?

	Arnd



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