diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
index 9a0bdf91e646..318d93f918c3 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -2042,8 +2042,11 @@ extern char *lsm_names;
 extern void security_add_hooks(struct security_hook_list *hooks, int count,
 				char *lsm);
 
+#define LSM_FLAG_LEGACY_MAJOR	BIT(0)
+
 struct lsm_info {
 	const char *name;	/* Required. */
+	unsigned long flags;	/* Optional: flags describing LSM */
 	int (*init)(void);	/* Required. */
 };
 
diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index 2c010874329f..e49c50e0d5ab 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -1729,5 +1729,6 @@ alloc_out:
 
 DEFINE_LSM(apparmor) = {
 	.name = "apparmor",
+	.flags = LSM_FLAG_LEGACY_MAJOR,
 	.init = apparmor_init,
 };
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index f0e36c3492ba..41908d2d6149 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -6999,6 +6999,7 @@ void selinux_complete_init(void)
    all processes and objects when they are created. */
 DEFINE_LSM(selinux) = {
 	.name = "selinux",
+	.flags = LSM_FLAG_LEGACY_MAJOR,
 	.init = selinux_init,
 };
 
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 430d4f35e55c..d72d215d7fde 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -4812,5 +4812,6 @@ static __init int smack_init(void)
  */
 DEFINE_LSM(smack) = {
 	.name = "smack",
+	.flags = LSM_FLAG_LEGACY_MAJOR,
 	.init = smack_init,
 };
diff --git a/security/tomoyo/tomoyo.c b/security/tomoyo/tomoyo.c
index 1b5b5097efd7..09f7af130d3a 100644
--- a/security/tomoyo/tomoyo.c
+++ b/security/tomoyo/tomoyo.c
@@ -552,5 +552,6 @@ static int __init tomoyo_init(void)
 
 DEFINE_LSM(tomoyo) = {
 	.name = "tomoyo",
+	.flags = LSM_FLAG_LEGACY_MAJOR,
 	.init = tomoyo_init,
 };