Index: runtime/src/kmp_affinity.cpp
===================================================================
--- runtime/src/kmp_affinity.cpp
+++ runtime/src/kmp_affinity.cpp
@@ -2028,7 +2028,11 @@
         if ((p == NULL) || (KMP_SSCANF(p + 1, "%u\n", &val) != 1))
           goto no_val;
         if (threadInfo[num_avail][osIdIndex] != UINT_MAX)
+#if KMP_ARCH_AARCH64
+          num_avail++;
+#else
           goto dup_field;
+#endif
         threadInfo[num_avail][osIdIndex] = val;
 #if KMP_OS_LINUX && USE_SYSFS_INFO
         char path[256];
Index: runtime/src/kmp_os.h
===================================================================
--- runtime/src/kmp_os.h
+++ runtime/src/kmp_os.h
@@ -860,8 +860,12 @@
 
 // Switches for OSS builds
 #ifndef USE_SYSFS_INFO
+#if KMP_ARCH_AARCH64
+#define USE_SYSFS_INFO 1
+#else
 #define USE_SYSFS_INFO 0
 #endif
+#endif
 #ifndef USE_CMPXCHG_FIX
 #define USE_CMPXCHG_FIX 1
 #endif