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

David Miller
2013-07-29T23:41:12Z

From: Vineet Gupta <Vineet.Gupta1@synopsys.com>
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:
> http://www.spinics.net/lists/linux-arch/msg21736.html
>
> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

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

Thanks!