Re: [Xen-devel] [PATCH v10 10/11] xen: add new Xen cpuid node for max address width info

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 25.09.17 at 12:00, <jgross@xxxxxxxx> wrote:
> --- a/xen/arch/x86/traps.c
> +++ b/xen/arch/x86/traps.c
> @@ -930,6 +930,13 @@ void cpuid_hypervisor_leaves(const struct vcpu *v, 
> uint32_t leaf,
>          res->b = v->vcpu_id;
>          break;
>  
> +    case 5: /* PV-specific parameters */
> +        if ( is_hvm_domain(d) || subleaf != 0 )
> +            break;
> +
> +        res->a = generic_flsl(get_upper_mfn_bound()) + PAGE_SHIFT;

While preparing to commit this I wondered why this isn't just
flsl(). Can you explain this, or can I just change it?

Jan


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