diff --git a/sys/kern/kern_mib.c b/sys/kern/kern_mib.c
index 54cdff14824..daf452f6cc9 100644
--- a/sys/kern/kern_mib.c
+++ b/sys/kern/kern_mib.c
@@ -78,6 +78,8 @@ SYSCTL_ROOT_NODE(CTL_HW,	  hw,     CTLFLAG_RW, 0,
 	"hardware");
 SYSCTL_ROOT_NODE(CTL_MACHDEP, machdep, CTLFLAG_RW, 0,
 	"machine dependent");
+SYSCTL_NODE(_machdep, OID_AUTO, mitigations, CTLFLAG_RW, 0,
+	"Machine dependent platform mitigations.");
 SYSCTL_ROOT_NODE(CTL_USER,	  user,   CTLFLAG_RW, 0,
 	"user-level");
 SYSCTL_ROOT_NODE(CTL_P1003_1B,  p1003_1b,   CTLFLAG_RW, 0,
diff --git a/sys/sys/sysctl.h b/sys/sys/sysctl.h
index c01ca3605bd..7e3e983a7eb 100644
--- a/sys/sys/sysctl.h
+++ b/sys/sys/sysctl.h
@@ -1094,6 +1094,7 @@ SYSCTL_DECL(_hw_bus);
 SYSCTL_DECL(_hw_bus_devices);
 SYSCTL_DECL(_hw_bus_info);
 SYSCTL_DECL(_machdep);
+SYSCTL_DECL(_machdep_mitigations);
 SYSCTL_DECL(_user);
 SYSCTL_DECL(_compat);
 SYSCTL_DECL(_regression);