Re: [PATCH v2 21/66] KVM: x86: Use supported_xcr0 to detect MPX support

[Paolo Bonzini]

On 03/03/20 00:56, Sean Christopherson wrote:
>  
>  bool kvm_mpx_supported(void)
>  {
> -	return ((host_xcr0 & (XFEATURE_MASK_BNDREGS | XFEATURE_MASK_BNDCSR))
> -		 && kvm_x86_ops->mpx_supported());
> +	return supported_xcr0 & (XFEATURE_MASK_BNDREGS | XFEATURE_MASK_BNDCSR);
>  }

Better check that both bits are set.

Paolo