1 files changed, 30 insertions, 0 deletions

diff --git a/include/xen/hvm.h b/include/xen/hvm.h
new file mode 100644
index 000000000000..b193fa2f9fdd
--- /dev/null
+++ b/include/xen/hvm.h
@@ -0,0 +1,30 @@
+/* Simple wrappers around HVM functions */
+#ifndef XEN_HVM_H__
+#define XEN_HVM_H__
+
+#include <xen/interface/hvm/params.h>
+#include <asm/xen/hypercall.h>
+
+static inline int hvm_get_parameter(int idx, uint64_t *value)
+{
+        struct xen_hvm_param xhv;
+        int r;
+
+        xhv.domid = DOMID_SELF;
+        xhv.index = idx;
+        r = HYPERVISOR_hvm_op(HVMOP_get_param, &xhv);
+        if (r < 0) {
+                printk(KERN_ERR "Cannot get hvm parameter %d: %d!\n",
+                        idx, r);
+                return r;
+        }
+        *value = xhv.value;
+        return r;
+}
+
+#define HVM_CALLBACK_VIA_TYPE_VECTOR 0x2
+#define HVM_CALLBACK_VIA_TYPE_SHIFT 56
+#define HVM_CALLBACK_VECTOR(x) (((uint64_t)HVM_CALLBACK_VIA_TYPE_VECTOR)<<\
+                HVM_CALLBACK_VIA_TYPE_SHIFT | (x))
+
+#endif /* XEN_HVM_H__ */