Re: [Xen-devel] [PATCH v4 7/7] x86/hyperv: setup VP assist page

[Jan Beulich <jbeulich@xxxxxxxx>]

On 22.01.2020 21:23, Wei Liu wrote:
> @@ -142,15 +143,40 @@ static void setup_hypercall_pcpu_arg(void)
>      this_cpu(hv_vp_index) = vp_index_msr;
>  }
>  
> +static void setup_vp_assist(void)
> +{
> +    void *mapping;
> +    uint64_t val;
> +
> +    mapping = this_cpu(hv_vp_assist);
> +
> +    if ( !mapping )
> +    {
> +        mapping = alloc_xenheap_page();
> +        if ( !mapping )
> +            panic("Failed to allocate vp_assist page for CPU%u\n",
> +                  smp_processor_id());

Quite obviously the same AP/BSP related remark here as was given for
patch 5.

Jan

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