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Date: Fri, 10 Feb 2012 12:41:46 -0600
From: Scott Wood <scottwood@freescale.com>
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To: Liu Yu <yu.liu@freescale.com>
Subject: Re: [PATCH v3 3/3] KVM: PPC: epapr: install ev_idle hcall for e500
 guest
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On 02/10/2012 04:02 AM, Liu Yu wrote:
> +_GLOBAL(epapr_ev_idle)
> +epapr_ev_idle:
> +#ifdef CONFIG_E500
> +	rlwinm	r3,r1,0,0,31-THREAD_SHIFT	/* current thread_info */
> +	lwz	r4,TI_LOCAL_FLAGS(r3)	/* set napping bit */
> +	ori	r4,r4,_TLF_NAPPING	/* so when we take an exception */
> +	stw	r4,TI_LOCAL_FLAGS(r3)	/* it will return to our caller */
> +#endif
> +	wrteei	1

On what hardware would you not need to use _TLF_NAPPING?

-Scott