On Friday 07 September 2012, Catalin Marinas wrote:
> The patch adds support for thread creation and context switching. The
> context switching CPU specific code is introduced with the CPU support
> patch (part of the arch/arm64/mm/proc.S file). AArch64 supports
> ASID-tagged TLBs and the ASID can be either 8 or 16-bit wide (detectable
> via the ID_AA64AFR0_EL1 register).
>
> Signed-off-by: Will Deacon <will.deacon@xxxxxxx>
> Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
> Acked-by: Tony Lindgren <tony@xxxxxxxxxxx>
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
But please fix a few small issues in process.c:
> diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
> new file mode 100644
> index 0000000..6dfd96f
> --- /dev/null
> +++ b/arch/arm64/kernel/process.c
> +
> +extern void setup_mm_for_reboot(void);
No extern declarations in .c files, put it in a header file instead.
> +
> +/*
> + * Function pointers to optional machine specific functions
> + */
> +void (*pm_power_off)(void);
> +EXPORT_SYMBOL(pm_power_off);
> +
> +void (*pm_restart)(const char *cmd);
> +EXPORT_SYMBOL_GPL(pm_restart);
> +
>
> +void (*pm_idle)(void) = default_idle;
> +EXPORT_SYMBOL(pm_idle);
I'd make them all EXPORT_SYMBOL_GPL. External modules have no business overriding them.
> + /*
> + * Whoops - the architecture was unable to reboot.
> + * Tell the user!
> + */
> + mdelay(1000);
> + printk("Reboot failed -- System halted\n");
> + while (1);
This delay seems pointless.
Arnd
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