diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
index 7c1fde50ecb0..bdf8532494fe 100644
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
@@ -1056,6 +1056,12 @@ static void lguest_load_sp0(struct tss_struct *tss,
 }
 
 /* Let's just say, I wouldn't do debugging under a Guest. */
+static unsigned long lguest_get_debugreg(int regno)
+{
+	/* FIXME: Implement */
+	return 0;
+}
+
 static void lguest_set_debugreg(int regno, unsigned long value)
 {
 	/* FIXME: Implement */
@@ -1303,6 +1309,7 @@ __init void lguest_init(void)
 	pv_cpu_ops.load_tr_desc = lguest_load_tr_desc;
 	pv_cpu_ops.set_ldt = lguest_set_ldt;
 	pv_cpu_ops.load_tls = lguest_load_tls;
+	pv_cpu_ops.get_debugreg = lguest_get_debugreg;
 	pv_cpu_ops.set_debugreg = lguest_set_debugreg;
 	pv_cpu_ops.clts = lguest_clts;
 	pv_cpu_ops.read_cr0 = lguest_read_cr0;