Re: [Xen-devel] can't boot dom0

[Chris Bainbridge <chris.bainbridge@xxxxxxxxx>]

On 05/10/05, Stephan Böni <boeni@xxxxxx> wrote:
> Well, i have the same problem with scsi and fc devices. It seams that
> this release is very very buggy at the moment.

Argghhhhhhhhhh! What is going on? If I enable smp it works! Using a
uniprocessor p4 with hyperthreading... huh? My best guess.. smp
enables some kind of different interrupt handling, and the cpu is
stuck waiting for an interrupt when probing the ata port? hmmm. Let's
test.

uniprocessor w/wo msi: fails
uniprocessor w acpi: fails
uniprocessor w msi+acpi+preempt: fails
uniprocessor+apic+ioapic+msi: can't compile :
drivers/built-in.o(.text+0x7022): In function `get_new_vector'::
undefined reference to `interrupt
uniprocessor+apic+ioapic: ok
uniprocessor+apic: fails

Ah-ha! So it looks like you need CONFIG_X86_UP_IOAPIC or SMP to get it working.

Bug 1) xen with non apic kernel is broken
Bug 2) compile error with CONFIG_PCI_MSI

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