Merge pull request #406 from vunnyso/vs-qemuKvm

Author: vunnyso

lib/runners/qemu.nix

@@ -38,8 +38,16 @@ let
     lib.optional requireUsb enableLibusb
     ++ lib.optional microvmConfig.optimize.enable minimizeQemuClosureSize
   );
+  qemuPkg =
+    if microvmConfig.cpu == null && vmHostPackages.stdenv.hostPlatform.isLinux
+    then
+      # If no CPU is requested and the host is Linux, use qemu with KVM support (hardware-accelerated)
+      vmHostPackages.qemu_kvm
+    else
+      # Different CPU architectures like darwin or Non-Linux use the generic qemu package
+      vmHostPackages.qemu;
 
-  qemu = overrideQemu vmHostPackages.qemu;
+  qemu = overrideQemu qemuPkg;
 
   aioEngine = if vmHostPackages.stdenv.hostPlatform.isLinux
     then "io_uring"