From c30c4612b55000d4957026c889212857cd3577ef Mon Sep 17 00:00:00 2001
From: Martin Wimpress <martin@wimpress.org>
Date: Tue, 14 May 2024 16:09:26 +0100
Subject: [PATCH] feat(darwin): check if SMT is enabled on darwin

---
 quickemu | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/quickemu b/quickemu
index 447c8c6..3aca4ce 100755
--- a/quickemu
+++ b/quickemu
@@ -315,9 +315,23 @@ function configure_cpu() {
         done
     fi
 
-    # Account for Hyperthreading/SMT.
-    if [ -e /sys/devices/system/cpu/smt/control ] && [ "${GUEST_CPU_CORES}" -ge 2 ]; then
+    if [ ${DARWIN} -eq 1 ]; then
+        # Get the number of physical cores
+        physicalcpu=$(sysctl -n hw.physicalcpu)
+        # Get the number of logical processors
+        logicalcpu=$(sysctl -n hw.logicalcpu)
+        # Check if Hyper-Threading is enabled
+        if [ "${logicalcpu}" -gt "${physicalcpu}" ]; then
+            HOST_CPU_SMT="on"
+        else
+            HOST_CPU_SMT="off"
+        fi
+    elif [ -e /sys/devices/system/cpu/smt/control ]; then
         HOST_CPU_SMT=$(cat /sys/devices/system/cpu/smt/control)
+    fi
+
+    # Account for Hyperthreading/SMT.
+    if [ "${GUEST_CPU_CORES}" -ge 2 ]; then
         case ${HOST_CPU_SMT} in
             on) GUEST_CPU_THREADS=2
                 GUEST_CPU_LOGICAL_CORES=$(( GUEST_CPU_CORES / GUEST_CPU_THREADS ));;