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Bug#584784: also applies to unstable



On Sun, 2010-06-06 at 23:18 +0200, Willi Mann wrote:
> > "Kernel panic - not syncing: To avoid data corruption io_map_base MUST
> > be set with multiple PCI domains."
> > 
> > has been applied on all PCI MIPS systems since Linux 2.6.24.  Are you
> > quite sure that this was introduced by the kernel upgrade and not a qemu
> > upgrade.
> 
> Yes, I didn't change the qemu version, it's really only the kernel that
> changed.
> 
> Attached is the dmesg output of the working kernel, version 2.6.32-9.

OK, it looks like this is due to an botched switch from IDE to libata
drivers on MIPS.  The qemu emulated HD controller is now being handled
by the ide-generic driver whereas it should have been switched from piix
to ata_piix, and ide-generic triggers this panic for reasons I don't
fully understand.

This will get fixed, but not immediately.

Ben.

-- 
Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.

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