Re: [PATCH] parisc: Switch from GENERIC_CPU_DEVICES to GENERIC_ARCH_TOPOLOGY

[Guenter Roeck]

On 4/1/22 09:47, Helge Deller wrote:
> Hi Günter,
>
> On 4/1/22 17:41, Guenter Roeck wrote:
> > On Thu, Mar 24, 2022 at 07:46:50PM +0100, Helge Deller wrote:
> > > Switch away from the own cpu topology code to common code which is used
> > > by ARM64 and RISCV. That will allow us to enable CPU hotplug later on.
> > >
> > > Signed-off-by: Helge Deller <deller@xxxxxx>
> >
> > This patch results in the following traceback when
> > booting generic-32bit_defconfig - SMP in qemu.
>
> That's strange, because I just built this generic-32bit_defconfig myself and
> it boots up nicely in qemu for me. The only thing missing is CONFIG_CGROUPS=y so that
> systemd can start.

Did you disable SMP (that is what - SMP was supposed to mean) ?
Also, note that the system does boot fine, it just spits out the warning.

> I'm not sure how I can debug/reproduce your bug report...

I see the problem with generic-32bit_defconfig if I disable SMP.
I normally have some other (debug) options enabled, but I confirmed
that it is sufficient to disable SMP. The actual command line should
not matter, but here is one of mine as example (for booting from
initrd). I currently use qemu v6.2.

qemu-system-hppa -kernel vmlinux \
    -no-reboot -initrd rootfs.cpio \
    -device e1000,netdev=net0 -netdev user,id=net0 \
    -append "panic=-1 slub_debug=FZPUA rdinit=/sbin/init console=ttyS0,115200" \
    -nographic -monitor null

Guenter