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Date:      Mon, 24 Nov 2003 14:13:59 -0800 (PST)
From:      John Polstra <jdp@polstra.com>
To:        Nate Lawson <nate@root.org>
Cc:        current@freebsd.org
Subject:   Re: PII SMP system hangs during boot with ACPI enabled
Message-ID:  <XFMail.20031124141359.jdp@polstra.com>
In-Reply-To: <20031124135124.G87605@root.org>

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On 24-Nov-2003 Nate Lawson wrote:
> On Mon, 24 Nov 2003, John Polstra wrote:
>> On 24-Nov-2003 Nate Lawson wrote:
>> >
>> > Please also send the output of acpidump -t -d > jdp-P2.asl
>>
>> When I try to run that command, I get:
>>
>>   acpidump: sysctl machdep.acpi_root does not point to RSDP
>>
>> The sysctl command shows that machdep.acpi_root is 0.
>> Remember, though, in order to boot it I had to disable ACPI in
>> /boot/loader.conf.
> 
> Yes, I see.  You could use an older kernel like the 5.1R cd.

I'll try that, and send you the dump if I can get one.

> Both of these show that acpi_task_thread is calling a task and then
> AcpiOsSignalSemaphore is hanging.  I'm wondering if your system can't
> handle the acpi interrupt being moved to irq 20.  Please try this
> (untested) patch that should disable moving the SCI to irq 20.  jhb can
> probably address this better than I.

I tried your patch, but it didn't change the behavior any.

John



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