Re: 2.6.0-test4 and hardware reports a non fatal incident

[Matt Gibson <gothick@gothick.org.uk>]

On Saturday 30 Aug 2003 11:49, Matt Gibson wrote:
> On Thursday 28 Aug 2003 23:17, Randy.Dunlap wrote:
> > Yes, the kernel has decided that your processor only has 1 Bank of
> > MCE register data to report.  I don't know how/why.  Sorry.
>
> Could it be something to do with this (in
> arch/i386/kernel/cpu/mcheck/k7.c)?
>
> 	if (l & (1<<8))	/* Control register present ? */
> 		wrmsr (MSR_IA32_MCG_CTL, 0xffffffff, 0xffffffff);
> 	nr_mce_banks = l & 0xff;
>
> 	for (i=1; i<nr_mce_banks; i++) {
>
> Check out the "for".  Or am I reading this wrong?

Having checked back, this was changed between test-2 and test-3.  The 
checking code in k7_machine_check() still loops from 0 rather than 1.  I 
think this may be leading to false reporting of problems, which may be why I 
and Tomasz are seeing these MCE messages on our Athlons.

Anyone who knows more about this stuff care to comment?  Is someone looking 
after MCE at the moment?  I couldn't find out much info on it.

Thanks,

Matt

-- 
"It's the small gaps between the rain that count,
 and learning how to live amongst them."
	      -- Jeff Noon