From: "Marek Marczykowski-Górecki" <marmarek@invisiblethingslab.com>
To: "Jürgen Groß" <jgross@suse.com>
Cc: Denis Efremov <efremov@linux.com>, Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org,
xen-devel <xen-devel@lists.xenproject.org>,
Roman Shaposhnik <roman@zededa.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: Kernel panic on 'floppy' module load, Xen HVM, since 4.19.143
Date: Mon, 28 Sep 2020 11:36:54 +0200 [thread overview]
Message-ID: <20200928093654.GW1482@mail-itl> (raw)
In-Reply-To: <26fe7920-d6a8-fb8a-b97c-59565410eff4@suse.com>
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On Mon, Sep 28, 2020 at 07:02:19AM +0200, Jürgen Groß wrote:
> On 27.09.20 13:14, Marek Marczykowski-Górecki wrote:
> > 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?
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next prev parent reply other threads:[~2020-09-28 9:37 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-27 11:14 Kernel panic on 'floppy' module load, Xen HVM, since 4.19.143 Marek Marczykowski-Górecki
2020-09-28 5:02 ` Jürgen Groß
2020-09-28 9:36 ` Marek Marczykowski-Górecki [this message]
2020-09-29 12:27 ` Denis Efremov
2020-09-29 12:41 ` Marek Marczykowski-Górecki
2020-09-29 14:05 ` Jürgen Groß
2020-09-30 8:42 ` Marek Marczykowski-Górecki
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