diff --git a/libcpuid/cpuid_main.c b/libcpuid/cpuid_main.c
index b486a3d..c638f09 100644
--- a/libcpuid/cpuid_main.c
+++ b/libcpuid/cpuid_main.c
@@ -455,6 +455,7 @@ const char* cpu_feature_str(cpu_feature_t feature)
 		{ CPU_FEATURE_RDTSCP, "rdtscp" },
 		{ CPU_FEATURE_LM, "lm" },
 		{ CPU_FEATURE_LAHF_LM, "lahf_lm" },
+		{ CPU_FEATURE_CMP_LEGACY, "cmp_legacy" },
 		{ CPU_FEATURE_SVM, "svm" },
 		{ CPU_FEATURE_SSE4A, "sse4a" },
 		{ CPU_FEATURE_MISALIGNSSE, "misalignsse" },
diff --git a/libcpuid/libcpuid.h b/libcpuid/libcpuid.h
index ae85606..d31b3ac 100644
--- a/libcpuid/libcpuid.h
+++ b/libcpuid/libcpuid.h
@@ -284,6 +284,7 @@ enum _cpu_feature_t {
 	CPU_FEATURE_RDTSCP,	/*!< RDTSCP instruction supported (AMD-only) */
 	CPU_FEATURE_LM,		/*!< Long mode (x86_64/EM64T) supported */
 	CPU_FEATURE_LAHF_LM,	/*!< LAHF/SAHF supported in 64-bit mode */
+	CPU_FEATURE_CMP_LEGACY,	/*!< core multi-processing legacy mode */
 	CPU_FEATURE_SVM,	/*!< AMD Secure virtual machine */
 	CPU_FEATURE_ABM,	/*!< LZCNT instruction support */
 	CPU_FEATURE_MISALIGNSSE,/*!< Misaligned SSE supported */
diff --git a/libcpuid/recog_amd.c b/libcpuid/recog_amd.c
index 24cea05..1609be9 100644
--- a/libcpuid/recog_amd.c
+++ b/libcpuid/recog_amd.c
@@ -164,6 +164,7 @@ static void load_amd_features(struct cpu_raw_data_t* raw, struct cpu_id_t* data)
 		{ 31, CPU_FEATURE_3DNOW },
 	};
 	const struct feature_map_t matchtable_ecx81[] = {
+		{  1, CPU_FEATURE_CMP_LEGACY },
 		{  2, CPU_FEATURE_SVM },
 		{  5, CPU_FEATURE_ABM },
 		{  6, CPU_FEATURE_SSE4A },