RE: cvs commit: src/sys/dev/acpica acpi_pci_link.c acpi_pcib.cacpi_pcib_acpi.c acpi_pcib_pci.c acpi_pcibvar.h

> -----Original Message-----
> From: owner-freebsd-current_at_freebsd.org 
> [mailto:owner-freebsd-current_at_freebsd.org] On Behalf Of 
> Daniel Eriksson
> Sent: Wednesday, August 11, 2004 8:49 PM
> To: 'Nate Lawson'
> Cc: freebsd-current_at_freebsd.org
> Subject: RE: cvs commit: src/sys/dev/acpica acpi_pci_link.c 
> acpi_pcib.cacpi_pcib_acpi.c acpi_pcib_pci.c acpi_pcibvar.h
> 
> Nate Lawson wrote:
> 
> > I need the dmesg output from boot -v to see the link priority 
> > settings.
> 
> Attached is the "boot -v" output from two separate boots with 
> a kernel built from sources dated 2004.08.11.21.00.00 (after 
> your patch with additional debug output).
> 
> The two logs (with "PnP OS installed" set to Yes or No in 
> BIOS) are pretty similar, so I don't think that setting in 
> the BIOS makes much difference for your code.
> 
> The next thing to try (I guess) is a kernel without "device 
> apic". However, my users are a bit upset about the downtime 
> (already 3 reboots today) so I might have to wait with that 
> until tomorrow.
> 
> /Daniel Eriksson
> 

I don't believe you have to maintain separate kernels to enable/disable apic.
You can set this in loader.conf via:

hint.apic.0.disabled=1

For the record, I have to set this on my dell pe2450, pe2550, and pe1550;
otherwise, the machines hang during boot.