On 01/07/2011 06:45 PM, Gordan Bobic wrote:
>>> And these alignment error counters (I'm assuming that is what those
>>> large numbers in /proc/cpu/alignment are) - do they implicitly mean
>>> actual calculation errors? Or are they generally harmless? I ask because
>>
>> They're not harmless if you don't fix them up and you're going to use
>> the misaligned data for something: the data is corrupted. If you read
>> the data and didn't do anything important with it then you won't see any
>> problem.
>>
>> What gcc did you cook your kernel with?
>
> The F12 repository kernel. I am currently building a new one (needed a
> few extra options) with the F13 gcc and bintools.
>
> But all these errors appear to be under User rather than System, so is
> it really the kernel? Since over the past hour of kernel recompiling the
> counters haven't increased at all, my guess is that it all happened last
> night when I was building/testing dietlibc stuff. I'll test that
> hypothesis when the new kernel is built.
Update:
Building the kernel produced no further alignment errors. The machine,
however, just after boot:
#cat /proc/cpu/alignment
Fri Jan 7 20:08:51 2011
User: 24
System: 1
Skipped: 0
Half: 0
Word: 0
DWord: 1
Multi: 0
User faults: 0 (ignored)
So something in the startup is still broken. Will test dietlibc build next.
Gordan
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