diff --git a/hypervisor/qemu/qemu_amd64.go b/hypervisor/qemu/qemu_amd64.go
index 1b7495d7..1fe3676d 100644
--- a/hypervisor/qemu/qemu_amd64.go
+++ b/hypervisor/qemu/qemu_amd64.go
@@ -5,11 +5,8 @@ package qemu
 import (
 	"fmt"
 	"os"
-	"runtime"
-	"syscall"
 
 	"github.com/golang/glog"
-	"github.com/hyperhq/hypercontainer-utils/hlog"
 	"github.com/hyperhq/runv/hypervisor"
 )
 
@@ -18,7 +15,7 @@ const (
 	X86_64_CONFIG_NR_CPUS = 64
 )
 
-func (qc *QemuContext) arguments(ctx *hypervisor.VmContext) []string {
+func (qc *QemuContext) arguments(ctx *hypervisor.VmContext, maxmem, maxcpus int) []string {
 	if ctx.Boot == nil {
 		ctx.Boot = &hypervisor.BootConfig{
 			CPU:    1,
@@ -30,15 +27,6 @@ func (qc *QemuContext) arguments(ctx *hypervisor.VmContext) []string {
 	boot := ctx.Boot
 	qc.cpus = boot.CPU
 
-	maxmem := hypervisor.DefaultMaxMem
-	var sysInfo syscall.Sysinfo_t
-	err := syscall.Sysinfo(&sysInfo)
-	if err == nil {
-		maxmem = int(sysInfo.Totalram / 1024 / 1024)
-	} else {
-		ctx.Log(hlog.DEBUG, "syscall.Sysinfo got error %v, use hypervisor.DefaultMaxMem", err)
-	}
-	maxcpus := runtime.NumCPU()
 	if maxcpus > X86_64_CONFIG_NR_CPUS {
 		maxcpus = X86_64_CONFIG_NR_CPUS
 	}
diff --git a/hypervisor/qemu/qemu_arm64.go b/hypervisor/qemu/qemu_arm64.go
index d8b4fb0e..3e596cd8 100644
--- a/hypervisor/qemu/qemu_arm64.go
+++ b/hypervisor/qemu/qemu_arm64.go
@@ -11,11 +11,12 @@ import (
 )
 
 const (
-	QEMU_SYSTEM_EXE    = "qemu-system-aarch64"
-	VM_MIN_MEMORY_SIZE = 128
+	QEMU_SYSTEM_EXE        = "qemu-system-aarch64"
+	VM_MIN_MEMORY_SIZE     = 128
+	AARCH64_CONFIG_NR_CPUS = 8
 )
 
-func (qc *QemuContext) arguments(ctx *hypervisor.VmContext) []string {
+func (qc *QemuContext) arguments(ctx *hypervisor.VmContext, maxmem, maxcpus int) []string {
 	if ctx.Boot == nil {
 		ctx.Boot = &hypervisor.BootConfig{
 			CPU:    1,
@@ -27,13 +28,17 @@ func (qc *QemuContext) arguments(ctx *hypervisor.VmContext) []string {
 	boot := ctx.Boot
 	qc.cpus = boot.CPU
 
+	if maxcpus > AARCH64_CONFIG_NR_CPUS {
+		maxcpus = AARCH64_CONFIG_NR_CPUS
+	}
+
 	// Currently the default memory size is fixed to 128 MiB.
 	if boot.Memory < VM_MIN_MEMORY_SIZE {
 		boot.Memory = VM_MIN_MEMORY_SIZE
 	}
 
-	memParams := fmt.Sprintf("size=%d,slots=1,maxmem=%dM", boot.Memory, hypervisor.DefaultMaxMem)
-	cpuParams := fmt.Sprintf("cpus=%d,maxcpus=%d", boot.CPU, hypervisor.DefaultMaxCpus)
+	memParams := fmt.Sprintf("size=%d,slots=1,maxmem=%dM", boot.Memory, maxmem)
+	cpuParams := fmt.Sprintf("cpus=%d,maxcpus=%d", boot.CPU, maxcpus)
 
 	params := []string{"-machine", "virt,accel=kvm,gic-version=host,usb=off", "-global", "kvm-pit.lost_tick_policy=discard", "-cpu", "host"}
 	if _, err := os.Stat("/dev/kvm"); os.IsNotExist(err) {
diff --git a/hypervisor/qemu/qemu_ppc64le.go b/hypervisor/qemu/qemu_ppc64le.go
index d24d5ffe..d1416c42 100644
--- a/hypervisor/qemu/qemu_ppc64le.go
+++ b/hypervisor/qemu/qemu_ppc64le.go
@@ -14,7 +14,7 @@ const (
 	VM_MIN_MEMORY_SIZE = 256 // On ppc64le the minimum memory size of a VM is 256 MiB
 )
 
-func (qc *QemuContext) arguments(ctx *hypervisor.VmContext) []string {
+func (qc *QemuContext) arguments(ctx *hypervisor.VmContext, maxmem, maxcpus int) []string {
 	if ctx.Boot == nil {
 		ctx.Boot = &hypervisor.BootConfig{
 			CPU:    1,
diff --git a/hypervisor/qemu/qemu_process.go b/hypervisor/qemu/qemu_process.go
index 5f55f56e..d3c20963 100644
--- a/hypervisor/qemu/qemu_process.go
+++ b/hypervisor/qemu/qemu_process.go
@@ -9,10 +9,13 @@ import (
 	"io"
 	"os"
 	"os/exec"
+	"runtime"
 	"strings"
+	"syscall"
 	"time"
 
 	"github.com/golang/glog"
+	"github.com/hyperhq/hypercontainer-utils/hlog"
 	"github.com/hyperhq/runv/hypervisor"
 )
 
@@ -126,7 +129,17 @@ func launchQemu(qc *QemuContext, ctx *hypervisor.VmContext) {
 		return
 	}
 
-	args := qc.arguments(ctx)
+	maxmem := hypervisor.DefaultMaxMem
+	var sysInfo syscall.Sysinfo_t
+	err := syscall.Sysinfo(&sysInfo)
+	if err == nil {
+		maxmem = int(sysInfo.Totalram / 1024 / 1024)
+	} else {
+		ctx.Log(hlog.ERROR, "syscall.Sysinfo got error %v, use hypervisor.DefaultMaxMem", err)
+	}
+	maxcpus := runtime.NumCPU()
+
+	args := qc.arguments(ctx, maxmem, maxcpus)
 	args = append(args, "-daemonize", "-pidfile", qc.qemuPidFile, "-D", qc.qemuLogFile.Name)
 	if ctx.GDBTCPPort != 0 {
 		args = append(args, "-gdb", fmt.Sprintf("tcp::%d", ctx.GDBTCPPort))
@@ -150,7 +163,7 @@ func launchQemu(qc *QemuContext, ctx *hypervisor.VmContext) {
 	cmd.Stdout = stdout
 	cmd.Stderr = stderr
 
-	err := cmd.Run()
+	err = cmd.Run()
 
 	if stdout.Len() != 0 {
 		glog.V(1).Info(stdout.String())
diff --git a/hypervisor/qemu/qemu_s390x.go b/hypervisor/qemu/qemu_s390x.go
index 6df61506..e0a25c2a 100644
--- a/hypervisor/qemu/qemu_s390x.go
+++ b/hypervisor/qemu/qemu_s390x.go
@@ -13,7 +13,7 @@ const (
 	QEMU_SYSTEM_EXE = "qemu-system-s390x"
 )
 
-func (qc *QemuContext) arguments(ctx *hypervisor.VmContext) []string {
+func (qc *QemuContext) arguments(ctx *hypervisor.VmContext, maxmem, maxcpus int) []string {
 	if ctx.Boot == nil {
 		ctx.Boot = &hypervisor.BootConfig{
 			CPU:    1,