Re: [PATCH] mm: Fix the TLB range flushed when __tlb_remove_page()runs out of slots

From: David Miller
Date: Mon Jul 29 2013 - 19:41:15 EST

From: Vineet Gupta <Vineet.Gupta1@xxxxxxxxxxxx>
Date: Wed, 29 May 2013 18:26:13 +0530

> zap_pte_range loops from @addr to @end. In the middle, if it runs out of
> batching slots, TLB entries needs to be flushed for @start to @interim,
> NOT @interim to @end.
> Since ARC port doesn't use page free batching I can't test it myself but
> this seems like the right thing to do.
> Observed this when working on a fix for the issue at thread:
> Signed-off-by: Vineet Gupta <vgupta@xxxxxxxxxxxx>

As this bug can cause pretty serious memory corruption, I'd like to
see this submitted to -stable.

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