[Libguestfs] supermin on arm

[Dennis Gilmore]

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On Wed, 4 Mar 2015 10:18:28 +0000
"Richard W.M. Jones" <rjones at redhat.com> wrote:

> On Tue, Mar 03, 2015 at 07:37:47PM -0600, Dennis Gilmore wrote:
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> > Hi all,
> > 
> > I was testing oz/imagefactory on 32 bit arm, you have to have
> > kernel-lpae installed to run kvm.  while you can have the regular
> > kernel installed also. You end up having the system booting the
> > regular kernel and you do not get kvm. Ideally supermin will work
> > with the lpae kernel.
> > https://github.com/libguestfs/supermin/blob/master/src/kernel.ml#L112
> > explictly removes it.
> 
> This check was added in the following commit:
> 
>   commit dc3e43babd76883df0493b57d563ca3b69e2662c
>   Author: Richard W.M. Jones <rjones at redhat.com>
>   Date:   Thu Aug 1 11:49:15 2013 +0100
> 
>       helper: On arm, don't choose a .lpae or .tegra kernel.
> 
>       The vexpress-aX emulation we are using in qemu doesn't support
> these kernels.
> 
> The concern was that the lpae kernels don't boot under qemu.  If they
> do, then I can remove this check.
> 
> Can you see if supermin works if you set some variation of:
> 
>   export SUPERMIN_KERNEL=/boot/vmlinuz-<version>.lpae
>   export SUPERMIN_KERNEL_VERSION=<version>
>   export SUPERMIN_MODULES=/lib/modules/<version>.lpae
> 
> which should bypass the check.
> 
> You might also need to set SUPERMIN_DTB to point to a DTB, or maybe
> not if qemu is generating device trees correctly on ARM 32 bit these
> days.
> 
> Roll on aarch64 :-)
> 
> Rich.

It worked just fine. I did not need to use a different dtb, the tegra
kernel is gone now.

Dennis

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