From 89305b7011338a5c4970180535e690b8d9e5ebcd Mon Sep 17 00:00:00 2001
From: Mikhail Klementev <blame@dumpstack.io>
Date: Mon, 19 Aug 2019 05:16:17 +0000
Subject: [PATCH] Use all host cpu features

---
 CHANGELOG.md        | 2 ++
 qemu/qemu-kernel.go | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 069cd41..7006d90 100644
--- a/CHANGELOG.md
+++ b/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
diff --git a/qemu/qemu-kernel.go b/qemu/qemu-kernel.go
index 439d409..18dfbb8 100644
--- a/qemu/qemu-kernel.go
+++ b/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())