diff --git a/cpuid_tool/cpuid_tool.c b/cpuid_tool/cpuid_tool.c
index 6835e33..1eb11a1 100644
--- a/cpuid_tool/cpuid_tool.c
+++ b/cpuid_tool/cpuid_tool.c
@@ -72,12 +72,15 @@ typedef enum {
 	NEED_L1I_SIZE,
 	NEED_L2_SIZE,
 	NEED_L3_SIZE,
+	NEED_L4_SIZE,
 	NEED_L1D_ASSOC,
 	NEED_L2_ASSOC,
 	NEED_L3_ASSOC,
+	NEED_L4_ASSOC,
 	NEED_L1D_CACHELINE,
 	NEED_L2_CACHELINE,
 	NEED_L3_CACHELINE,
+	NEED_L4_CACHELINE,
 	NEED_CODENAME,
 	NEED_FEATURES,
 	NEED_CLOCK,
@@ -124,12 +127,15 @@ matchtable[] = {
 	{ NEED_L2_SIZE      , "--cache"        , 1},
 	{ NEED_L2_SIZE      , "--l2-cache"     , 1},
 	{ NEED_L3_SIZE      , "--l3-cache"     , 1},
+	{ NEED_L4_SIZE      , "--l4-cache"     , 1},
 	{ NEED_L1D_ASSOC    , "--l1d-assoc"    , 1},
 	{ NEED_L2_ASSOC     , "--l2-assoc"     , 1},
 	{ NEED_L3_ASSOC     , "--l3-assoc"     , 1},
+	{ NEED_L4_ASSOC     , "--l4-assoc"     , 1},
 	{ NEED_L1D_CACHELINE, "--l1d-cacheline", 1},
 	{ NEED_L2_CACHELINE , "--l2-cacheline" , 1},
 	{ NEED_L3_CACHELINE , "--l3-cacheline" , 1},
+	{ NEED_L4_CACHELINE , "--l4-cacheline" , 1},
 	{ NEED_CODENAME     , "--codename"     , 1},
 	{ NEED_FEATURES     , "--flags"        , 1},
 	{ NEED_CLOCK        , "--clock"        , 0},
@@ -370,6 +376,9 @@ static void print_info(output_data_switch query, struct cpu_raw_data_t* raw,
 		case NEED_L3_SIZE:
 			fprintf(fout, "%d\n", data->l3_cache);
 			break;
+		case NEED_L4_SIZE:
+			fprintf(fout, "%d\n", data->l4_cache);
+			break;
 		case NEED_L1D_ASSOC:
 			fprintf(fout, "%d\n", data->l1_assoc);
 			break;
@@ -379,6 +388,9 @@ static void print_info(output_data_switch query, struct cpu_raw_data_t* raw,
 		case NEED_L3_ASSOC:
 			fprintf(fout, "%d\n", data->l3_assoc);
 			break;
+		case NEED_L4_ASSOC:
+			fprintf(fout, "%d\n", data->l4_assoc);
+			break;
 		case NEED_L1D_CACHELINE:
 			fprintf(fout, "%d\n", data->l1_cacheline);
 			break;
@@ -388,6 +400,9 @@ static void print_info(output_data_switch query, struct cpu_raw_data_t* raw,
 		case NEED_L3_CACHELINE:
 			fprintf(fout, "%d\n", data->l3_cacheline);
 			break;
+		case NEED_L4_CACHELINE:
+			fprintf(fout, "%d\n", data->l4_cacheline);
+			break;
 		case NEED_CODENAME:
 			fprintf(fout, "%s\n", data->cpu_codename);
 			break;
@@ -594,12 +609,15 @@ int main(int argc, char** argv)
 		fprintf(fout, "  L1 I cache : %d KB\n", data.l1_instruction_cache);
 		fprintf(fout, "  L2 cache   : %d KB\n", data.l2_cache);
 		fprintf(fout, "  L3 cache   : %d KB\n", data.l3_cache);
+		fprintf(fout, "  L4 cache   : %d KB\n", data.l4_cache);
 		fprintf(fout, "  L1D assoc. : %d-way\n", data.l1_assoc);
 		fprintf(fout, "  L2 assoc.  : %d-way\n", data.l2_assoc);
 		fprintf(fout, "  L3 assoc.  : %d-way\n", data.l3_assoc);
+		fprintf(fout, "  L4 assoc.  : %d-way\n", data.l4_assoc);
 		fprintf(fout, "  L1D line sz: %d bytes\n", data.l1_cacheline);
 		fprintf(fout, "  L2 line sz : %d bytes\n", data.l2_cacheline);
 		fprintf(fout, "  L3 line sz : %d bytes\n", data.l3_cacheline);
+		fprintf(fout, "  L4 line sz : %d bytes\n", data.l4_cacheline);
 		fprintf(fout, "  SSE units  : %d bits (%s)\n", data.sse_size, data.detection_hints[CPU_HINT_SSE_SIZE_AUTH] ? "authoritative" : "non-authoritative");
 		fprintf(fout, "  code name  : `%s'\n", data.cpu_codename);
 		fprintf(fout, "  features   :");
diff --git a/libcpuid/cpuid_main.c b/libcpuid/cpuid_main.c
index c73946a..d0113f9 100644
--- a/libcpuid/cpuid_main.c
+++ b/libcpuid/cpuid_main.c
@@ -54,9 +54,9 @@ static void raw_data_t_constructor(struct cpu_raw_data_t* raw)
 static void cpu_id_t_constructor(struct cpu_id_t* id)
 {
 	memset(id, 0, sizeof(struct cpu_id_t));
-	id->l1_data_cache = id->l1_instruction_cache = id->l2_cache = id->l3_cache = -1;
-	id->l1_assoc = id->l2_assoc = id->l3_assoc = -1;
-	id->l1_cacheline = id->l2_cacheline = id->l3_cacheline = -1;
+	id->l1_data_cache = id->l1_instruction_cache = id->l2_cache = id->l3_cache = id->l4_cache = -1;
+	id->l1_assoc = id->l2_assoc = id->l3_assoc = id->l4_assoc = -1;
+	id->l1_cacheline = id->l2_cacheline = id->l3_cacheline = id->l4_cacheline = -1;
 	id->sse_size = -1;
 }
 
@@ -460,10 +460,10 @@ int cpuid_deserialize_raw_data(struct cpu_raw_data_t* data, const char* filename
 			recognized = 1;
 		}
 		syntax = 1;
-		syntax = syntax && parse_token("basic_cpuid", token, value, data->basic_cpuid, 32, &recognized);
-		syntax = syntax && parse_token("ext_cpuid", token, value, data->ext_cpuid, 32, &recognized);
-		syntax = syntax && parse_token("intel_fn4", token, value, data->intel_fn4,  4, &recognized);
-		syntax = syntax && parse_token("intel_fn11", token, value, data->intel_fn11,  4, &recognized);
+		syntax = syntax && parse_token("basic_cpuid", token, value, data->basic_cpuid,   MAX_CPUID_LEVEL, &recognized);
+		syntax = syntax && parse_token("ext_cpuid", token, value, data->ext_cpuid,   MAX_EXT_CPUID_LEVEL, &recognized);
+		syntax = syntax && parse_token("intel_fn4", token, value, data->intel_fn4,    MAX_INTELFN4_LEVEL, &recognized);
+		syntax = syntax && parse_token("intel_fn11", token, value, data->intel_fn11, MAX_INTELFN11_LEVEL, &recognized);
 		if (!syntax) {
 			warnf("Error: %s:%d: Syntax error\n", filename, cur_line);
 			fclose(f);
diff --git a/libcpuid/libcpuid.h b/libcpuid/libcpuid.h
index 6cd9fd4..f0c99e6 100644
--- a/libcpuid/libcpuid.h
+++ b/libcpuid/libcpuid.h
@@ -212,6 +212,9 @@ struct cpu_id_t {
 	
 	/** L3 cache size in KB. Zero on most systems */
 	int32_t l3_cache;
+
+	/** L4 cache size in KB. Zero on most systems */
+	int32_t l4_cache;
 	
 	/** Cache associativity for the L1 data cache. -1 if undetermined */
 	int32_t l1_assoc;
@@ -221,6 +224,9 @@ struct cpu_id_t {
 	
 	/** Cache associativity for the L3 cache. -1 if undetermined */
 	int32_t l3_assoc;
+
+	/** Cache associativity for the L4 cache. -1 if undetermined */
+	int32_t l4_assoc;
 	
 	/** Cache-line size for L1 data cache. -1 if undetermined */
 	int32_t l1_cacheline;
@@ -231,6 +237,9 @@ struct cpu_id_t {
 	/** Cache-line size for L3 cache. -1 if undetermined */
 	int32_t l3_cacheline;
 	
+	/** Cache-line size for L4 cache. -1 if undetermined */
+	int32_t l4_cacheline;
+
 	/**
 	 * The brief and human-friendly CPU codename, which was recognized.<br>
 	 * Examples:
diff --git a/libcpuid/recog_intel.c b/libcpuid/recog_intel.c
index 0d56d18..10f1172 100644
--- a/libcpuid/recog_intel.c
+++ b/libcpuid/recog_intel.c
@@ -372,7 +372,8 @@ enum _cache_type_t {
 	L1I,
 	L1D,
 	L2,
-	L3
+	L3,
+	L4
 };
 typedef enum _cache_type_t cache_type_t;
 
@@ -397,6 +398,12 @@ static void check_case(uint8_t on, cache_type_t cache, int size, int assoc, int
 			data->l3_cache = size;
 			data->l3_assoc = assoc;
 			data->l3_cacheline = linesize;
+			break;
+		case L4:
+			data->l4_cache = size;
+			data->l4_assoc = assoc;
+			data->l4_cacheline = linesize;
+			break;
 		default:
 			break;
 	}
@@ -517,6 +524,8 @@ static void decode_intel_deterministic_cache_info(struct cpu_raw_data_t* raw,
 			type = L2;
 		else if (level == 3 && typenumber == 3)
 			type = L3;
+		else if (level == 4 && typenumber == 3)
+			type = L4;
 		else {
 			warnf("deterministic_cache: unknown level/typenumber combo (%d/%d), cannot\n", level, typenumber);
 			warnf("deterministic_cache: recognize cache type\n");