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-rw-r--r--src/afl-gotcpu.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/afl-gotcpu.c b/src/afl-gotcpu.c
index 144ec9c9..c5b8a27a 100644
--- a/src/afl-gotcpu.c
+++ b/src/afl-gotcpu.c
@@ -174,7 +174,12 @@ int main(int argc, char **argv) {
       if (c == NULL) PFATAL("cpuset_create failed");
 
       cpuset_set(i, c);
-  #elif defined(__APPLE__)
+  #elif defined(__APPLE__) && defined(__x86_64__)
+      // the api is not workable on arm64, core's principle
+      // differs significantly hive of core per type vs individual ones.
+      // Possible TODO: For arm64 is to slightly change the meaning
+      // of gotcpu since it makes no sense on this platform
+      // but rather just displaying current policy ?
       thread_affinity_policy_data_t c = {i};
       thread_port_t native_thread = pthread_mach_thread_np(pthread_self());
       if (thread_policy_set(native_thread, THREAD_AFFINITY_POLICY,