Re: [PATCH 1/2] viridian: remove implicit limit of 64 VPs per partition

[Jan Beulich <jbeulich@xxxxxxxx>]

On 08.01.2021 01:46, Igor Druzhinin wrote:
> --- a/tools/libs/light/libxl_x86.c
> +++ b/tools/libs/light/libxl_x86.c
> @@ -336,7 +336,7 @@ static int hvm_set_viridian_features(libxl__gc *gc, 
> uint32_t domid,
>          LOG(DETAIL, "%s group enabled", 
> libxl_viridian_enlightenment_to_string(v));
>  
>      if (libxl_bitmap_test(&enlightenments, 
> LIBXL_VIRIDIAN_ENLIGHTENMENT_BASE)) {
> -        mask |= HVMPV_base_freq;
> +        mask |= HVMPV_base_freq | HVMPV_no_vp_limit;

Could you clarify the point of having the new control when at
the guest config level there's no way to prevent it from
getting enabled (short of disabling Viridian extensions
altogether)?

Jan