Question regarding Intel ICH7 motherboard and integrated RAID

[Karl Denninger]

I have the BIOS set to IDE mode; I found the other problem "the hard way"
and the workaround...

Here's the dump from the BTX death - leading zeros omitted, and hand-copied
(hope I didn't screw it up!)

INT = 00d err = 0 efl = 30086 eip = 14db
eax = 8 ebx = 1970 ecx = c350 edx = 81400008
esi = 3684 edi = 0 ebp = 364 esp = 349
cs = cf000 ds = 9b00 es = 14000 fs = 0000

cs:eip = 2e 0f 01 16 8d 07 0f 20 .......

ss:esp = 08 00 00 00 c0 9a 40 81 00 00 50

Hope this helps.

- 
-- 
Karl Denninger (karl at denninger.net) Internet Consultant & Kids Rights Activist
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On Sun, Sep 16, 2007 at 03:46:31PM -0400, Howard Goldstein wrote:
> Karl Denninger wrote:
> > Hi folks;
> > 
> > I have a new Intel ICH7 board here that has Quad-core support.
> > 
> > It works well EXCEPT....
> > 
> > It has an on-board RAID controller with some internal buffer memory.
> 
> There's a known issue with an interrupt storm when the ICH7R is
> configured for AHCI or RAID, and a pr was filed back in July(don't have
> the number, search for interrupt storm on atapci1+).  The suspicion was
> that some peripheral no one has identified yet is hammering the apic and
> we can't mask it.
> 
> The workaround is to set the BIOS for IDE mode.  It's a bit of a drag
> because SATA-II mode isn't reached when in IDE mode, only in AHCI (and
> RAID?) mode.  If you don't panic when you set it for IDE mode then
> you've probably run into the same problem.
> 
> On the plus side FreeBSD on the Q6600 *rocks* and our geom stuff does
> the RAIDdy stuff nicely for a software solution.  I sympathize with you
> as I spent most of the day yesterday trying to work this same problem.
> 
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