[Xen-devel] Re: [PATCH]xen/acpi: make poweroff really work for pv-ops dom0

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

On 11/23/09 17:33, Wei, Gang wrote:
> xen/acpi: Make poweroff really work for pv-ops dom0
>
> sched_op(SHUTDOWN_poweroff) hypercall will only halt all physical cpus without
> really poweroff the system. Use pm_power_off fn to achieve it.
>   

It seems unfortunate that Xen can't actually implement SHUTDOWN_poweroff
in a manner that the name suggests ;)  But it can't because it may need
to interpret _SST to do it...

Thanks,
    J

> Signed-off-by: Wei Gang <gang.wei@xxxxxxxxx>
>
> diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
> index ecb9b0d..d9fd3f4 100644
> --- a/arch/x86/xen/enlighten.c
> +++ b/arch/x86/xen/enlighten.c
> @@ -1058,6 +1058,14 @@ static void xen_machine_halt(void)
>       xen_reboot(SHUTDOWN_poweroff);
>  }
>  
> +static void xen_machine_power_off(void)
> +{
> +     if (pm_power_off) 
> +             pm_power_off();
> +     else
> +             xen_reboot(SHUTDOWN_poweroff);
> +}
> +
>  static void xen_crash_shutdown(struct pt_regs *regs)
>  {
>       xen_reboot(SHUTDOWN_crash);
> @@ -1066,7 +1074,7 @@ static void xen_crash_shutdown(struct pt_regs *regs)
>  static const struct machine_ops __initdata xen_machine_ops = {
>       .restart = xen_restart,
>       .halt = xen_machine_halt,
> -     .power_off = xen_machine_halt,
> +     .power_off = xen_machine_power_off,
>       .shutdown = xen_machine_halt,
>       .crash_shutdown = xen_crash_shutdown,
>       .emergency_restart = xen_emergency_restart,


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