xen/acpi: ACPI PAD driver

[firefly-linux-kernel-4.4.55.git] / include / xen / interface / version.h

diff --git a/include/xen/interface/version.h b/include/xen/interface/version.h
index 7ff6498679a371e218137b3b5d2e6f1691304795..96d8d3deea6b0d6c591657faf8fbc8c46bcc9ed9 100644 (file)
--- a/include/xen/interface/version.h
+++ b/include/xen/interface/version.h
@@ -63,4 +63,19 @@ struct xen_feature_info {
 /* arg == xen_domain_handle_t. */
 #define XENVER_guest_handle 8
 
+/* Check if running on Xen version (major, minor) or later */
+static inline bool
+xen_running_on_version_or_later(unsigned int major, unsigned int minor)
+{
+       unsigned int version;
+
+       if (!xen_domain())
+               return false;
+
+       version = HYPERVISOR_xen_version(XENVER_version, NULL);
+       if ((((version >> 16) == major) && ((version & 0xffff) >= minor)) ||
+               ((version >> 16) > major))
+               return true;
+       return false;
+}
 #endif /* __XEN_PUBLIC_VERSION_H__ */