Re: [Xen-devel] [PATCH] xen/arm: Implement domain_get_maximum_gpfn

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Tue, 2014-07-01 at 15:57 +0100, Julien Grall wrote:
> The function domain_get_maximum_gpfn is returning the maximum gpfn ever
> mapped in the guest. We can use d->arch.p2m.max_mapped_gfn for this purpose.

What is using the result of this hypercall?

> 
> Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx>
> ---
>  xen/arch/arm/mm.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c
> index 03a0533..2d40f07 100644
> --- a/xen/arch/arm/mm.c
> +++ b/xen/arch/arm/mm.c
> @@ -947,7 +947,7 @@ int page_is_ram_type(unsigned long mfn, unsigned long 
> mem_type)
>  
>  unsigned long domain_get_maximum_gpfn(struct domain *d)
>  {
> -    return -ENOSYS;
> +    return d->arch.p2m.max_mapped_gfn;
>  }
>  
>  void share_xen_page_with_guest(struct page_info *page,



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