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-rw-r--r--include/xen/interface/features.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/xen/interface/features.h b/include/xen/interface/features.h
index d73228d1648..f51b6413b05 100644
--- a/include/xen/interface/features.h
+++ b/include/xen/interface/features.h
@@ -38,6 +38,9 @@
*/
#define XENFEAT_pae_pgdir_above_4gb 4
+/* x86: Does this Xen host support the MMU_PT_UPDATE_PRESERVE_AD hypercall? */
+#define XENFEAT_mmu_pt_update_preserve_ad 5
+
#define XENFEAT_NR_SUBMAPS 1
#endif /* __XEN_PUBLIC_FEATURES_H__ */