Re: [PATCH v5 4/5] msm: hotplug: support cpu hotplug on msm

[Catalin Marinas]

On 16 December 2010 06:54, Jeff Ohlstein <johlstei@xxxxxxxxxxxxxx> wrote:
> --- /dev/null
> +++ b/arch/arm/mach-msm/hotplug.c
[...]
> +static inline void platform_do_lowpower(unsigned int cpu)
> +{
> + Â Â Â /* Just enter wfi for now. TODO: Properly shut off the cpu. */
> + Â Â Â for (;;) {
> + Â Â Â Â Â Â Â /*
> + Â Â Â Â Â Â Â Â* here's the WFI
> + Â Â Â Â Â Â Â Â*/
> +        asm(".word   Â0xe320f003\n"
> + Â Â Â Â Â Â Â Â Â :
> + Â Â Â Â Â Â Â Â Â :
> + Â Â Â Â Â Â Â Â Â : "memory", "cc");

Is this for an ARMv7 platform? If yes, you could just use the WFI
instruction directly (and it would also work if compiling the kernel
to Thumb-2 mode).

-- 
Catalin
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