8.1-RC2 MCE caused by some LAPIC/clock changes?

[Jeremy Chadwick]

On Wed, Jul 21, 2010 at 07:50:53PM +0300, Andriy Gapon wrote:
> on 21/07/2010 19:44 Markus Gebert said the following:
> > 1271:      92146   45282139          9       4885   PCI-MSI-edge      ioc0
> ...
> > Not sure how to interpret this. At first sight no IRQ58, but I guess they might
> > be using MSI for mpt, which might avoid the problem entirely.
> 
> Yep, looks like ioc0 is it.

So do we know why mpt(4) isn't making use of MSI on FreeBSD?  Markus'
original pciconf -lvc output does show MSI and MSI-X capabilities:

mpt0 at pci0:134:2:0:      class=0x010000 card=0x30601000 chip=0x00501000 rev=0x02 hdr=0x00
    vendor     = 'LSI Logic (Was: Symbios Logic, NCR)'
    device     = 'SAS 3000 series, 4-port with 1064 -StorPort'
    class      = mass storage
    subclass   = SCSI
    cap 01[50] = powerspec 2  supports D0 D1 D2 D3  current D0
    cap 05[98] = MSI supports 1 message, 64 bit
    cap 07[68] = PCI-X 64-bit supports 133MHz, 2048 burst read, 16 split transactions
    cap 11[b0] = MSI-X supports 1 message in map 0x14

-- 
| Jeremy Chadwick                                   jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |