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SubjectCONFIG_TRANSPARENT_HUGEPAGE with PREEMPT_RT_FULL
Hello Thomas,

(resending due to HTML formatting)

I am looking into using CONFIG_TRANSPARENT_HUGEPAGE with PREEMPT_RT_FULL
but currently the latest rt patch has it disabled.

What I managed to find on the mailing list so far is that Yong Zhang
reported a crash on rt_spin_lock for which you suggested to disable
CONFIG_TRANSPARENT_HUGEPAGE until further notice. That was on Jul 24,
2011 so I was wondering if you have any more news on that. Is there any
hope to get transparent hugepages working with preempt_rt? Any estimate
on how difficult a fix for that will be?

Also, we ran some basic ltp mm and ltp hugetlb on an rt image with
transparent hugepages, on an ARM arndale, and didn't get any problems.
Do you think it's possible that the problem got fixed somewhere along
the way?

Thanks and regards,
Ciprian


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