Re: [RFC][PATCH 4/6] arm, mm: Convert arm to generic tlb

[Peter Zijlstra]

On Thu, 2012-05-17 at 17:00 +0100, Catalin Marinas wrote:

> BTW, looking at your tlb-unify branch, does tlb_remove_table() call
> tlb_flush/tlb_flush_mmu before freeing the tables?  I can only see
> tlb_remove_page() doing this. On ARM, even UP, we need the TLB flushing
> after clearing the pmd and before freeing the pte page table (and
> ideally doing it less often than at every pte_free_tlb() call).

No I don't think it does, so far the only archs using the RCU stuff are
ppc,sparc and s390 and none of those needed that (Xen might join them
soon though). But I will have to look and consider this more carefully.
I 'lost' most of the ppc/sparc/s390 details from memory to say this with
any certainty.
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