Re: [PATCH v6 04/11] x86/tdx: Add protected guest support for TDX guest

[Joerg Roedel]

On Fri, Sep 03, 2021 at 10:28:05AM -0700, Kuppuswamy Sathyanarayanan wrote:
>  static inline bool prot_guest_has(unsigned int attr)
>  {
>  	if (sme_me_mask)
>  		return amd_prot_guest_has(attr);
> +	else if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL)
> +		return intel_prot_guest_has(attr);

This causes a function call on every Intel machine this code runs. is
there an easier to check whether TDX is enabled, like the sme_me_mask
check on AMD?