From 7f1e0aadce5f8ac2086ee3f91fc93504bdc8ecb9 Mon Sep 17 00:00:00 2001
From: Kroese <kroese@users.noreply.github.com>
Date: Wed, 5 Jun 2024 04:34:28 +0200
Subject: [PATCH] feat: Support invariant TSC

---
 src/proc.sh | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/proc.sh b/src/proc.sh
index 047417b..404aa24 100644
--- a/src/proc.sh
+++ b/src/proc.sh
@@ -64,6 +64,26 @@ if [[ "$KVM" != [Nn]* ]]; then
     CPU_FEATURES="$CPU_FEATURES,migratable=no"
   fi
 
+  if grep -qw "svm" <<< "$flags"; then
+
+    # AMD processor
+
+    if grep -qw "tsc_scale" <<< "$flags"; then
+      CPU_FEATURES="$CPU_FEATURES,+invtsc"
+    fi
+
+  else
+
+    # Intel processor
+
+    vmx=$(sed -ne '/^vmx flags/s/^.*: //p' /proc/cpuinfo)
+
+    if grep -qw "tsc_scaling" <<< "$vmx"; then
+      CPU_FEATURES="$CPU_FEATURES,+invtsc"
+    fi
+
+  fi
+
 else
 
   KVM_OPTS=""