Cannot load wireguard module

[Michal Suchánek]

On Mon, Mar 18, 2024 at 10:50:49PM +1100, Michael Ellerman wrote:
> Michael Ellerman <mpe at ellerman.id.au> writes:
> > Michal Suchánek <msuchanek at suse.de> writes:
> >> Hello,
> >>
> >> I cannot load the wireguard module.
> >>
> >> Loading the module provides no diagnostic other than 'No such device'.
> >>
> >> Please provide maningful diagnostics for loading software-only driver,
> >> clearly there is no particular device needed.
> >
> > Presumably it's just bubbling up an -ENODEV from somewhere.
> >
> > Can you get a trace of it?
> >
> > Something like:
> >
> >   # trace-cmd record -p function_graph -F modprobe wireguard
> >
> > That should probably show where it's bailing out.
> >
> >> jostaberry-1:~ # uname -a
> >> Linux jostaberry-1 6.8.0-lp155.8.g7e0e887-default #1 SMP Wed Mar 13 09:02:21 UTC 2024 (7e0e887) ppc64le ppc64le ppc64le GNU/Linux
> >> jostaberry-1:~ # modprobe wireguard
> >> modprobe: ERROR: could not insert 'wireguard': No such device
> >> jostaberry-1:~ # modprobe -v wireguard
> >> insmod /lib/modules/6.8.0-lp155.8.g7e0e887-default/kernel/arch/powerpc/crypto/chacha-p10-crypto.ko.zst 
> >> modprobe: ERROR: could not insert 'wireguard': No such device
> >  
> > What machine is this? A Power10?
> 
> I am able to load the module successfully on a P10 running v6.8.0.

Of course, it's not a Power10. Otherwise the Power10-specific chacha
implementation would load.

Thanks

Michal