Re: [PATCH v2 9/9] x86/xsaves: Re-enable XSAVES

[Dave Hansen]

On 02/25/2016 12:26 PM, Yu-cheng Yu wrote:
> -	 * ( This is easy to backport while we are fixing
> -	 *   XSAVES* support. )
> +	 * Most recent CPUs supporting XSAVES can run 64-bit mode.
> +	 * Enable XSAVES for 64-bit.
>  	 */
> -	setup_clear_cpu_cap(X86_FEATURE_XSAVES);
> +	if (!config_enabled(CONFIG_X86_64))
> +		setup_clear_cpu_cap(X86_FEATURE_XSAVES);
>  }

Is this intended to be permanent?  If so, we would not be able to
support any future supervisor features on 32-bit.