linux-kernel - Re: [PATCH] xen/arm: introduce xen_early

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Message-ID: <alpine.DEB.2.02.1304181644060.7254@kaball.uk.xensource.com>
Date:	Thu, 18 Apr 2013 16:44:58 +0100
From:	Stefano Stabellini <stefano.stabellini@...citrix.com>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
CC:	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"will.deacon@....com" <will.deacon@....com>,
	"arnd@...db.de" <arnd@...db.de>,
	"nicolas.pitre@...aro.org" <nicolas.pitre@...aro.org>,
	"rob.herring@...xeda.com" <rob.herring@...xeda.com>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"olof@...om.net" <olof@...om.net>
Subject: Re: [PATCH] xen/arm: introduce xen_early_init, use PSCI on xen

On Thu, 18 Apr 2013, Stefano Stabellini wrote:
> diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
> index b002822..3006de4 100644
> --- a/arch/arm/xen/enlighten.c
> +++ b/arch/arm/xen/enlighten.c
> @@ -176,11 +178,36 @@ static int __init xen_secondary_init(unsigned int cpu)
>  	return 0;
>  }
>  
> +static bool __init xen_smp_init(void)
> +{
> +#ifdef CONFIG_SMP
> +	/* If we are running on Xen, use PSCI if available.
> +	 * In any case do not try to use the native smp_ops. */
> +	if (psci_smp_available())
> +		smp_set_ops(&psci_smp_ops);
> +	return true;
> +#endif
> +}

Small mistake here: ifndef CONFIG_SMP, xen_smp_init won't have a return
value.
I'll fix and resend.
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