Re: [uml-user] Run 2.6 kernel on 2.4 host

[Enjoy M. <enj...@gm...>]

Is it possible to build and run 2.6 on 2.4? What environment is
required? What are the limitations if any?

The answer depends. As you said, you were trying to run 2.6 on 2.4.18. I
think that kernel is too old to run 2.4 uml kernel. So, it can't run 2.6
kernel.

I tried to run old 2.4 uml kernel on redhat-9 (oh, what an old release)
virtual machine. It turn out that the original kernel, kernel-2.4.20-8, is
too old to run 2.4 kernel. There is a bug in that kernel make it impossible
to run any uml kernel. So, after dig in google, I update the kernel to
2.4.25. It works as expected.

I managed to boot kernel-2.6.11 on 2.4.25, but it failed to login. It may
because the root filesystem is too old.

thanks



On Mon, Feb 9, 2015 at 2:17 AM, Vladimir "Equidamoid" Shapranov <
equ...@gm...> wrote:

> Hi,
>
> I need to run some recent software on a legacy server running 2.4.18
> kernel. Sadly it is not possible to rebuild the sotware to run natively
> with that kernel (our code requires boost, boost requires gcc 4.5+,
> gcc4.5+ doesn't like old glibc and recent glibc doesnt build for 2.4
> kernel).
> So I'm trying to run UML 2.6 kernel on 2.4 system. I tried prebuilt
> 2.6.27 kernel from (http://uml.devloop.org.uk/kernels.html) but it
> refused to run on 2.4 ("ERROR: kernel too old"). Next, I tried to build
> it on the Debian Woody VM with gcc 2.95 & 3.4 and glibc 2.2 but got
> dozens of errors.
> Is it possible to build and run 2.6 on 2.4? What environment is
> required? What are the limitations if any?
>
> Thank you!
>
>
> --
> Best regards,
> Vladimir
>
>
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