Index: intern/cycles/util/util_system.cpp
===================================================================
--- intern/cycles/util/util_system.cpp	(revision 36380)
+++ intern/cycles/util/util_system.cpp	(working copy)
@@ -45,7 +45,7 @@
 #elif defined(__APPLE__)
 	size_t len = sizeof(count);
 	int mib[2] = { CTL_HW, HW_NCPU };
-	
+
 	sysctl(mib, 2, &count, &len, NULL, 0);
 #else
 	count = (uint)sysconf(_SC_NPROCESSORS_ONLN);
@@ -60,7 +60,24 @@
 #ifndef _WIN32
 static void __cpuid(int data[4], int selector)
 {
-	asm("cpuid" : "=a" (data[0]), "=b" (data[1]), "=c" (data[2]), "=d" (data[3]) : "a"(selector));
+    uint32_t eax; // output: eax
+    uint32_t ebx; // output: ebx
+    uint32_t ecx; // output: ecx
+    uint32_t edx; // output: edx
+
+	asm(
+        "pushl %%ebx\n\t"
+        "cpuid \n\t"
+        "movl %%ebx, %1\n\t"
+        "popl %%ebx\n\t"
+        : "=a" (eax), "=r" (ebx), "=c" (ecx), "=d" (edx)
+        : "a"(selector)
+        : "cc");
+
+    data[0] = eax;
+    data[1] = ebx;
+    data[2] = ecx;
+    data[3] = edx;
 }
 #endif