Merge pull request #61 from mgouicem/master

Change default value for n_cores in setCacheHierarchy.
diff --git a/xbyak/xbyak_util.h b/xbyak/xbyak_util.h
index 36fe3c0..ca02534 100644
--- a/xbyak/xbyak_util.h
+++ b/xbyak/xbyak_util.h
@@ -96,7 +96,7 @@
 //		const unsigned int INSTRUCTION_CACHE = 2;
 		const unsigned int UNIFIED_CACHE = 3;
 		unsigned int smt_width = 0;
-		unsigned int n_cores = 0;
+		unsigned int n_cores = (unsigned int) -1;
 		unsigned int data[4];
 
 		/*