xen/pvh/x86: Define what an PVH guest is (v3).

[deliverable/linux.git] / include / xen / xen.h

diff --git a/include/xen/xen.h b/include/xen/xen.h
index a74d4362c4f84aca7a7218162a6cdba7df385fff..0c0e3ef4c45dcfe7767af8c7f9d5ae2309e4efdc 100644 (file)
--- a/include/xen/xen.h
+++ b/include/xen/xen.h
@@ -29,4 +29,18 @@ extern enum xen_domain_type xen_domain_type;
 #define xen_initial_domain()   (0)
 #endif /* CONFIG_XEN_DOM0 */
 
+#ifdef CONFIG_XEN_PVH
+/* This functionality exists only for x86. The XEN_PVHVM support exists
+ * only in x86 world - hence on ARM it will be always disabled.
+ * N.B. ARM guests are neither PV nor HVM nor PVHVM.
+ * It's a bit like PVH but is different also (it's further towards the H
+ * end of the spectrum than even PVH).
+ */
+#include <xen/features.h>
+#define xen_pvh_domain() (xen_pv_domain() && \
+                         xen_feature(XENFEAT_auto_translated_physmap) && \
+                         xen_have_vector_callback)
+#else
+#define xen_pvh_domain()       (0)
+#endif
 #endif /* _XEN_XEN_H */