X_A78C:
+		case CPU_PART_CORTEX_A710:
+		case CPU_PART_CORTEX_X1:
+		case CPU_PART_CORTEX_X1C:
+		case CPU_PART_CORTEX_X2:
+		case CPU_PART_CORTEX_X3:
+		case CPU_PART_CORTEX_X4:
+		case CPU_PART_CORTEX_X925:
+		case CPU_PART_NEOVERSE_N1:
+		case CPU_PART_NEOVERSE_N2:
+		case CPU_PART_NEOVERSE_V1:
+		case CPU_PART_NEOVERSE_V2:
+		case CPU_PART_NEOVERSE_V3:
+		case CPU_PART_NEOVERSE_V3AE:
+			return (FEAT_DEFAULT_ENABLE);
+		}
+	}
 
 	/*
-	 * Cortex-A76 erratum 1286807 (Cat B rare)
-	 * Present in r0p0 - r3p0
-	 * Fixed in r3p1
+	 * Cortex-A55 erratum 2441007 (Cat B rare)
+	 * Present in all revisions
 	 */
-	if (midr_check_var_part_range(midr, CPU_IMPL_ARM, CPU_PART_CORTEX_A76,
-	    0, 0, 3, 0))
+	if (CPU_IMPL(midr) == CPU_IMPL_ARM &&
+	    CPU_PART(midr) == CPU_PART_CORTEX_A55)
 		return (FEAT_DEFAULT_DISABLE);
 
 	/*