> I have a non-VT/Pacifica box. I have happily running PVM domUs
> with distro kernels. I need to test some mainline code (unrelated to
> virtualization). Xen 3.1 x86_64 in dom0. So, I build a mainline 32bit
> kernel with CONFIG_XEN. The files in arch/i386/xen seem to be built
> just fine, but I can't figure out what object to boot. bzImage fails
> with:
>
> ----------------------------------------------------------------------
> Error: (2, 'Invalid kernel', 'xc_dom_find_loader: no loader found\n')
> ----------------------------------------------------------------------
>
> I also tried vmlinux.bin, which gets the same. I tried
> arch/i386/boot/compressed/vmlinux, but that gets:
>
> ----------------------------------------------------------------------
> Error: (2, 'Invalid kernel', "elf_xen_note_check: ERROR: Not a Xen-ELF
> image: No ELF notes or '__xen_guest' section found.\n")
> ----------------------------------------------------------------------
>
> Lastly I tried vmlinux from the toplevel kernel source
> directory, and that just appears to hang the domU.
> What am I doing wrong? Is there a particular make target I'm
> supposed to use? A particular kernel image file I'm not seeing?
First off, I take it you've compiled the guest with PAE? Only PAE guests will
run under x86_64 Xen.
Second, you should be fine off using the top level vmlinux / vmlinuz. bzImage
won't (yet) work.
Thirdly, confusingly, vanilla 3.1 doesn't properly handle pre-3.1-era 32-bit
guest kernels. I believe changes to fix this are in the unstable tree... If
the mainline kernel doesn't use the latest post-3.1 interfaces then maybe
this is the problem you're seeing. In which case a newer Xen / tools (and
possibly dom0) might solve it.
These are my guesses; I've not tried Xen64, nor using a mainline kernel
myself, though so YMMV, sorry.
Cheers,
Mark
--
Dave: Just a question. What use is a unicyle with no seat? And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!
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