Re: [Xen-devel] [for-4.7 2/2] xen/arm: Document the behavior of XENMAPSPACE_dev_mmio

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 25.05.16 at 13:41, <julien.grall@xxxxxxx> wrote:
> --- a/xen/include/public/memory.h
> +++ b/xen/include/public/memory.h
> @@ -220,7 +220,10 @@ DEFINE_XEN_GUEST_HANDLE(xen_machphys_mapping_t);
>  #define XENMAPSPACE_gmfn_range   3 /* GMFN range, XENMEM_add_to_physmap 
> only. */
>  #define XENMAPSPACE_gmfn_foreign 4 /* GMFN from another dom,
>                                      * XENMEM_add_to_physmap_batch only. */
> -#define XENMAPSPACE_dev_mmio     5 /* device mmio region */
> +#define XENMAPSPACE_dev_mmio     5 /* device mmio region
> +                                      On ARM, the region will be mapped
> +                                      in stage-2 using the memory attribute
> +                                      Device_nGnRE. */

Since this is unimplemented on x86, may I suggest to make this "ARM
only; the region will be ..."?

Also - is Device_nGnRE a term uniform between ARM32 and ARM64?

Jan


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