First I installed qemu and kvm and then Created an image using...

```
sudo qemu-img create -f qcow2 debian.img 15G

```

...and when tried to load the iso file...

```
sudo kvm -hda debian.img kali-linux.iso -m 2048 -net nic -net user -soundhw all

```

then this error shows up...

```
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:EDX.syscall [bit 11]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:EDX.lm [bit 29]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]

```