can kvm tool load vmlinux?

can kvm tool load vmlinux?

[David Evensky]

I've been trying see if I can use a vmlinux kernel binary image with kvm tool.
If use a bzImage as

    lkvm run -k .../bzImage --console serial -d /dev/null

which runs until it expectedly dies since I didn't give it an initramfs or disk.
However, when I try:

    lkvm run -k .../bzImage --console serial -d /dev/null

I get the following printed and then nothing:

  # kvm run -k .../vmlinux -m 448 -c 4 --name guest-12289
  Warning: .../vmlinux is not a bzImage. Trying to load it as a flat binary...


Is this supposed to work?

Thanks,
\dae

Re: can kvm tool load vmlinux?

[Matt Evans]

On 15/12/11 08:24, David Evensky wrote:
> 
> I've been trying see if I can use a vmlinux kernel binary image with kvm tool.
> If use a bzImage as
> 
>     lkvm run -k .../bzImage --console serial -d /dev/null
> 
> which runs until it expectedly dies since I didn't give it an initramfs or disk.
> However, when I try:
> 
>     lkvm run -k .../bzImage --console serial -d /dev/null
> 
> I get the following printed and then nothing:
> 
>   # kvm run -k .../vmlinux -m 448 -c 4 --name guest-12289
>   Warning: .../vmlinux is not a bzImage. Trying to load it as a flat binary...
> 
> 
> Is this supposed to work?

Hi David,


Currently there are loaders for bzImages and flat binaries only.  Since your
vmlinux is not detected as a bzImage (it's a plain ELF), kvmtool will assume
it's a flat binary (which it isn't) & try that.  Boom!

An ELF loader would be cool though.  (Maybe if I find time...)


Cheers,


Matt