Messages in this thread | | | Date | Wed, 22 May 2013 20:47:01 +0200 | From | Stanislav Meduna <> | Subject | Re: [PATCH] mm: fix up a spurious page fault whenever it happens |
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On 22.05.2013 20:35, Rik van Riel wrote:
> I'm stumped. > > If the Geode knows how to flush single TLB entries, it > should do that when flush_tlb_page is called. > > If it does not know, it should throw an invalid instruction > exception, and not quietly complete the instruction without > doing anything.
Could it be that the problem is not stale TLB, but a page directory that is somehow invalid, e.g. belonging to the previous modprobe (or whatever) instead of the running process?
My patch does load_cr3(next->pgd); so it explicitely loads something there.
> In other words, make the code look like this, for testing: > > static inline void __native_flush_tlb_single(unsigned long addr) > { > __flush_tlb(); > }
Yup, will try it.
Thanks -- Stano
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