Re: Fwd: simple qemu command not working

[John Snow <jsnow@redhat.com>]

On 5/22/20 4:32 AM, haris iqbal wrote:
> Hi,
> 
> I am having some trouble with spinning up a VM using qemu. The
> description is below. Can someone please point me in the right
> direction?
> 
> --
> 
> Regards
> -Haris
> 
> 
> ---------- Forwarded message ---------
> From: haris iqbal <haris.phnx@gmail.com>
> Date: Wed, May 20, 2020 at 5:10 PM
> Subject: simple qemu command not working
> To: <qemu-discuss@nongnu.org>
> Cc: Danil Kipnis <danil.kipnis@cloud.ionos.com>
> 
> 
> Hi,
> 
> I am trying to install ubuntu in one of the qcow2 images I have
> created, using the below command
> 
>     sudo qemu-system-x86_64 -enable-kvm -nographic -smp 8 -m 8G -cpu
> qemu64 -cdrom ubuntu-19.10-live-server-amd64.iso -boot d
> ubuntu-19.10-live-server-amd64.qcow2
> 
> First it spits out a warning, and then just hangs at "Initializing gfx code...".
> 
>     qemu-system-x86_64: warning: host doesn't support requested
> feature: CPUID.80000001H:ECX.svm [bit 2]
>     qemu-system-x86_64: warning: host doesn't support requested
> feature: CPUID.80000001H:ECX.svm [bit 2]
>     qemu-system-x86_64: warning: host doesn't support requested
> feature: CPUID.80000001H:ECX.svm [bit 2]
>     qemu-system-x86_64: warning: host doesn't support requested
> feature: CPUID.80000001H:ECX.svm [bit 2]
>     qemu-system-x86_64: warning: host doesn't support requested
> feature: CPUID.80000001H:ECX.svm [bit 2]
>     qemu-system-x86_64: warning: host doesn't support requested
> feature: CPUID.80000001H:ECX.svm [bit 2]
>     qemu-system-x86_64: warning: host doesn't support requested
> feature: CPUID.80000001H:ECX.svm [bit 2]
>     qemu-system-x86_64: warning: host doesn't support requested
> feature: CPUID.80000001H:ECX.svm [bit 2]
>     SeaBIOS (version 1.13.0-1ubuntu1)
> 
> 
>     iPXE (http://ipxe.org) 00:03.0 CA00 PCI2.10 PnP PMM+BFF8C9F0+BFECC9F0 CA00
> 
> 
> 
>     Booting from DVD/CD...
> 
>     ISOLINUX 6.04 20190226 ETCD Copyright (C) 1994-2015 H. Peter Anvin et al
>     Loading bootlogo...
> 
>     Initializing gfx code...
> 
> I have searched a lot and got a number of solutions and possible
> problems but none worked.
> 
> 1) Have tried with Ubuntu 20 also, but same error.
> 
> 2) VT-x not enabled.
> 
> It is enabled, `lscpu` shows
> 
>     Virtualization:                  VT-x
>     Hypervisor vendor:               KVM
>     Flags: .. vmx ..
> 
> 3) Tried with `-cpu qemu64`. Did not work
> 
> 4) used `qemu-system-i386` instead of `qemu-system-x86_64`. But that
> fails with a different error
> 
>     This kernel requires an x86-64 CPU, but only detected an i686 CPU.
>     Unable to boot - please use a kernel appropriate for your CPU.
> 
> 5) I have asked the same question online, but no answers.
> https://stackoverflow.com/questions/61864520/qemu-installating-ubuntu-through-iso-gets-stuck-shows-svm-cpu-bit-warning
> 
> 6) Have tried without the -nographics option, same story.
> 
> 7) I did find out that the "SVM" CPU bit corresponds to "AMD Secure
> Virtual Machine", which confused me since my CPU is Haswell.
> 
> The host system on which I am running this command is an ubuntu.
> I have tried this on 2 separate ubuntu machines, one running on
> virtualbox as a VM with host OS windows 10.
> The other also running on a virtualized hypervisor (not sure which
> one), as a VM.
> 

So *both* the Ubuntu machines you've tried to run QEMU on are themselves
virtual machines?

You'll need to go all the way down to the baremetal level and enable
nested KVM if that's your goal.

For a HyperV root, I think there are similar steps you need to take to
enable KVM inside a guest.

For VirtualBox, I have no idea.