--- b/kernel/cpu.c
+++ a/kernel/cpu.c
@@ -2063,15 +2063,6 @@
 
 static int __init cpu_smt_state_init(void)
 {
-	/*
-	 * If SMT was disabled by BIOS, detect it here, after the CPUs have
-	 * been brought online.  This ensures the smt/l1tf sysfs entries are
-	 * consistent with reality.  Note this may overwrite cpu_smt_control's
-	 * previous setting.
-	 */
-	if (topology_max_smt_threads() == 1)
-		cpu_smt_control = CPU_SMT_NOT_SUPPORTED;
-
 	return sysfs_create_group(&cpu_subsys.dev_root->kobj,
 				  &cpuhp_smt_attr_group);
 }