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Date: Fri, 12 Jan 2018 19:57:35 +0100 (CET)
From: Thomas Gleixner <tglx@linutronix.de>
To: Laurent Dufour <ldufour@linux.vnet.ibm.com>
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Subject: Re: [PATCH v6 01/24] x86/mm: Define CONFIG_SPF
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On Fri, 12 Jan 2018, Laurent Dufour wrote:

> Introduce CONFIG_SPF which turns on the Speculative Page Fault handler when
> building for 64bits with SMP.
> 
> Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
> ---
>  arch/x86/Kconfig | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index a317d5594b6a..d74353b85aaf 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -2882,6 +2882,10 @@ config X86_DMA_REMAP
>  config HAVE_GENERIC_GUP
>  	def_bool y
>  
> +config SPF
> +	def_bool y
> +	depends on X86_64 && SMP

Can you please put that into a generic place as

    config SPF
    	   bool

and let the architectures select it.

Also SPF could be bit more elaborate and self explaining for the causual
reader. 3 letter acronyms are reserved for non existing agencies.

Thanks,

	tglx