Re: [Xen-devel] [PATCH v2 02/11] xen/hvmlite: Bootstrap HVMlite guest

[David Vrabel]

On 01/02/16 15:38, Boris Ostrovsky wrote:
> --- a/include/xen/xen.h
> +++ b/include/xen/xen.h
> @@ -29,6 +29,12 @@ extern enum xen_domain_type xen_domain_type;
>  #define xen_initial_domain()	(0)
>  #endif	/* CONFIG_XEN_DOM0 */
>  
> +#ifdef CONFIG_XEN_PVHVM
> +extern int xen_hvmlite;
> +#else
> +#define xen_hvmlite		(0)
> +#endif

I think we want a feature set and not a single boolean here.  There's
going to HVMlite variants (e.g., those with an emulated APIC to support
PCI passthrough and those without).

So we test e.g., xen_hvm_feature(XEN_HVM_FEATURE_APIC), which would be
clear for a HVMlite guest without an (emulated) APIC.

David