diff options
Diffstat (limited to 'include/xen')
| -rw-r--r-- | include/xen/interface/features.h | 6 | ||||
| -rw-r--r-- | include/xen/interface/grant_table.h | 7 |
2 files changed, 13 insertions, 0 deletions
diff --git a/include/xen/interface/features.h b/include/xen/interface/features.h index 131a6ccdba25..6ad3d110bb81 100644 --- a/include/xen/interface/features.h +++ b/include/xen/interface/features.h @@ -41,6 +41,12 @@ /* x86: Does this Xen host support the MMU_PT_UPDATE_PRESERVE_AD hypercall? */ #define XENFEAT_mmu_pt_update_preserve_ad 5 +/* + * If set, GNTTABOP_map_grant_ref honors flags to be placed into guest kernel + * available pte bits. + */ +#define XENFEAT_gnttab_map_avail_bits 7 + /* x86: Does this Xen host support the HVM callback vector type? */ #define XENFEAT_hvm_callback_vector 8 diff --git a/include/xen/interface/grant_table.h b/include/xen/interface/grant_table.h index bcce56439d64..56806bc90c2f 100644 --- a/include/xen/interface/grant_table.h +++ b/include/xen/interface/grant_table.h @@ -526,6 +526,13 @@ DEFINE_GUEST_HANDLE_STRUCT(gnttab_cache_flush); #define GNTMAP_contains_pte (1<<_GNTMAP_contains_pte) /* + * Bits to be placed in guest kernel available PTE bits (architecture + * dependent; only supported when XENFEAT_gnttab_map_avail_bits is set). + */ +#define _GNTMAP_guest_avail0 (16) +#define GNTMAP_guest_avail_mask ((uint32_t)~0 << _GNTMAP_guest_avail0) + +/* * Values for error status returns. All errors are -ve. */ #define GNTST_okay (0) /* Normal return. */ |