new interrupt code: panic when going multiuser

John Baldwin jhb at
Tue Nov 4 10:38:33 PST 2003

On 04-Nov-2003 Harald Schmalzbauer wrote:
> On Tuesday 04 November 2003 18:19, John Baldwin wrote:
>> On 04-Nov-2003 Lukas Ertl wrote:
>> > On Tue, 4 Nov 2003, John Baldwin wrote:
>> >> On 04-Nov-2003 Lukas Ertl wrote:
>> >> > On Tue, 4 Nov 2003, Lukas Ertl wrote:
>> >> >> I somehow can't get at a good vmcore :-(.  But I found out that the
>> >> >> machine boots fine in "Safe Mode", where DMA and hw.ata.wc is turned
>> >> >> off.
>> >> >
>> >> > Ok, if I set hw.ata.ata_dma=0 in loader.conf, it boots fine.  Could
>> >> > there be some issue with ATAng + new interrupt code?
>> >>
>> >> Can you provide a dmesg please?  There may be a weird issue with
>> >> some PPro's for example that I haven't been able to test.
>> >
>> > Sorry for the noise, I think I found the problem: I had to put "options
>> > SMP" and "device apic" into the kernel, now everythings seems to run
>> > fine. I thought they were only needed for SMP kernels, that's at least
>> > what the comment in GENERIC says...  If you still want the dmesg, I can
>> > send it to you.
>> Well, a kernel without SMP and just 'device apic' should work fine, and
>> a kernel with both SMP and 'device apic' should also work fine.
> Hmm, I think this answer should be for "New <PNP0303> and aPic question"?
> Well I tired to build one (with -curr some weeks ago) with device apic only 
> which didn't work, I had to add options smp arrrgghhh. Had a look in my file 
> and saw I did the following:
>#options         SMP
>#options         APIC_IO
> Seems I didn't use "device apic" (perhaps I didn't recognize)
> But regardless, when I built a SMP kernel it didn't run on my UP machine.
> Thanks a lot,

I just committed a bunch of changes to the interrupt and SMP code.
When you update to those changes, you should be able to build a UP
kernel with 'device apic' and have it work, and you should be able
to build an SMP kernel and have it run on your machine.


John Baldwin <jhb at>  <><
"Power Users Use the Power to Serve!"  -

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