Use all host cpu features

CHANGELOG.md

@@ -66,6 +66,8 @@
 
 - dmesg is not cleaned before the start of module/exploit anymore.
 
+- qemu/kvm will use all host cpu features.
+
 ### Removed
 
 - *Kernel factory* is removed completely in favor of incremental

qemu/qemu-kernel.go

@@ -213,6 +213,7 @@ func (q *System) Start() (err error) {
 	qemuArgs := []string{"-snapshot", "-nographic",
 		"-hda", q.drivePath,
 		"-kernel", q.kernel.KernelPath,
+		"-cpu", "host",
 		"-smp", fmt.Sprintf("%d", q.Cpus),
 		"-m", fmt.Sprintf("%d", q.Memory),
 		"-device", "e1000,netdev=n1",
@@ -232,7 +233,7 @@ func (q *System) Start() (err error) {
 	}
 
 	if q.arch == X86x64 && runtime.GOOS == "darwin" {
-		qemuArgs = append(qemuArgs, "-accel", "hvf", "-cpu", "host")
+		qemuArgs = append(qemuArgs, "-accel", "hvf")
 	}
 
 	qemuArgs = append(qemuArgs, "-append", q.cmdline())