diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 1b14041f57950ca93a135f5169bbcb2cf2949a4e..e21be5b4f0500f7d9119bea9c8723e8e07209509 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -576,8 +576,7 @@ static void bsp_init_amd(struct cpuinfo_x86 *c)
 
 	case 0x1a:
 		switch (c->x86_model) {
-		case 0x00 ... 0x0f:
-		case 0x20 ... 0x2f:
+		case 0x00 ... 0x2f:
 		case 0x40 ... 0x4f:
 		case 0x70 ... 0x7f:
 			setup_force_cpu_cap(X86_FEATURE_ZEN5);
@@ -973,7 +972,6 @@ static void init_amd_zen_common(void)
 
 static void init_amd_zen1(struct cpuinfo_x86 *c)
 {
-	init_amd_zen_common();
 	fix_erratum_1386(c);
 
 	/* Fix up CPUID bits, but only if not virtualised. */
@@ -1028,7 +1026,6 @@ static void zen2_zenbleed_check(struct cpuinfo_x86 *c)
 
 static void init_amd_zen2(struct cpuinfo_x86 *c)
 {
-	init_amd_zen_common();
 	init_spectral_chicken(c);
 	fix_erratum_1386(c);
 	zen2_zenbleed_check(c);
@@ -1036,8 +1033,6 @@ static void init_amd_zen2(struct cpuinfo_x86 *c)
 
 static void init_amd_zen3(struct cpuinfo_x86 *c)
 {
-	init_amd_zen_common();
-
 	if (!cpu_has(c, X86_FEATURE_HYPERVISOR)) {
 		/*
 		 * Zen3 (Fam19 model < 0x10) parts are not susceptible to
@@ -1051,15 +1046,12 @@ static void init_amd_zen3(struct cpuinfo_x86 *c)
 
 static void init_amd_zen4(struct cpuinfo_x86 *c)
 {
-	init_amd_zen_common();
-
 	if (!cpu_has(c, X86_FEATURE_HYPERVISOR))
 		msr_set_bit(MSR_ZEN4_BP_CFG, MSR_ZEN4_BP_CFG_SHARED_BTB_FIX_BIT);
 }
 
 static void init_amd_zen5(struct cpuinfo_x86 *c)
 {
-	init_amd_zen_common();
 }
 
 static void init_amd(struct cpuinfo_x86 *c)
@@ -1097,6 +1089,13 @@ static void init_amd(struct cpuinfo_x86 *c)
 	case 0x16: init_amd_jg(c); break;
 	}
 
+	/*
+	 * Save up on some future enablement work and do common Zen
+	 * settings.
+	 */
+	if (c->x86 >= 0x17)
+		init_amd_zen_common();
+
 	if (boot_cpu_has(X86_FEATURE_ZEN1))
 		init_amd_zen1(c);
 	else if (boot_cpu_has(X86_FEATURE_ZEN2))