Messages in this thread | | | Date | Wed, 19 Jun 2013 09:36:39 +0200 | From | Stanislav Meduna <> | Subject | Re: [PATCH] mm: fix up a spurious page fault whenever it happens |
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On 19.06.2013 07:20, Linus Torvalds wrote:
>> No crash in 2 days running with preempt none... > > Is this UP?
Yes it is.
> There's the fast_tlb race that Peter fixed in commit 29eb77825cc7 > ("arch, mm: Remove tlb_fast_mode()"). I'm not seeing how it would > cause infinite TLB faults, but it definitely causes potentially > incoherent TLB contents. And afaik it only happens with > CONFIG_PREEMPT, and on UP systems. Which sounds like it might match > your setup...
Oh, thank you for the pointer, this indeed looks interesting.
Unfortunately the patch massively does not apply to 3.4 which I am using and I know too little what all is involved here to backport it. I will test it when (if) it gets to the 3.4(-rt) (or when I find some spare time to play with the newer kernel on that system).
Thanks -- Stano
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