On Mon, Sep 28, 2020 at 07:02:19AM +0200, Jürgen Groß wrote:

On 27.09.20 13:14, Marek Marczykowski-Górecki wrote:

quoted

Hi all,

I get kernel panic on 'floppy' module load. If I blacklist the module,
then everything works.
The issue happens in Xen HVM, other virtualization modes (PV, PVH) works
fine. PV dom0 works too. I haven't tried bare metal, but I assume it
works fine too.

Could you please try bare metal?

I don't have any hw with floppy controller at hand...
Booting on what I have, it works, loading floppy just says -ENODEV.

Working in PV and PVH mode, but not in HVM, is pointing towards either
an issue in IRQ handling (not Xen specific) or in qemu.

It might be that Xen is advertising a rarely used APIC mode. In case
bare metal is working it might be helpful to have APIC related boot
message differences between HVM guest and bare metal.

-- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?