Re: [Xen-devel] [PATCH v2 03/10] xen: extend XEN_DOMCTL_memory_mapping to handle memory policy

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 30.04.19 at 23:02, <sstabellini@xxxxxxxxxx> wrote:
> --- a/xen/include/public/domctl.h
> +++ b/xen/include/public/domctl.h
> @@ -571,12 +571,24 @@ struct xen_domctl_bind_pt_irq {
>  */
>  #define DPCI_ADD_MAPPING         1
>  #define DPCI_REMOVE_MAPPING      0
> +/*
> + * Default memory policy. Corresponds to:
> + * Arm: MEMORY_POLICY_ARM_DEV_nGRE
> + * x86: MEMORY_POLICY_X86_UC
> + */
> +#define MEMORY_POLICY_DEFAULT    0
> +/* x86 only. Memory type UNCACHABLE */
> +#define MEMORY_POLICY_X86_UC     0

I'm afraid this may end up misleading, as on NPT and in
shadow mode we use UC- instead of UC afaics. Andrew,
do you have an opinion either way what exactly should
be stated here?

Jan



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