From: Andrew Morton <akpm@linux-foundation.org>
To: David Miller <davem@davemloft.net>
Cc: Vineet.Gupta1@synopsys.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, mgorman@suse.de, hughd@google.com,
riel@redhat.com, rientjes@google.com, peterz@infradead.org,
linux-arch@vger.kernel.org, catalin.marinas@arm.com,
jcmvbkbc@gmail.com, Greg KH <greg@kroah.com>,
stable@vger.kernel.org
Subject: Re: [PATCH] mm: Fix the TLB range flushed when __tlb_remove_page() runs out of slots
Date: Mon, 29 Jul 2013 16:46:58 -0700 [thread overview]
Message-ID: <20130729164658.0dfa1ff602bc131fe2ec0b1b@linux-foundation.org> (raw)
In-Reply-To: <20130729.164106.943996066712571180.davem@davemloft.net>
On Mon, 29 Jul 2013 16:41:06 -0700 (PDT) David Miller <davem@davemloft.net> wrote:
> 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.
Greg, e6c495a96ce02574e765d5140039a64c8d4e8c9e from mainline, please.
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next prev parent reply other threads:[~2013-07-29 23:47 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-29 12:56 [PATCH] mm: Fix the TLB range flushed when __tlb_remove_page() runs out of slots Vineet Gupta
2013-05-29 14:03 ` Catalin Marinas
2013-05-29 14:08 ` Vineet Gupta
2013-05-29 14:29 ` Catalin Marinas
2013-05-29 14:36 ` Vineet Gupta
2013-05-29 14:51 ` Catalin Marinas
2013-05-30 5:02 ` Vineet Gupta
2013-07-29 23:41 ` David Miller
2013-07-29 23:46 ` Andrew Morton [this message]
2013-07-30 0:16 ` Greg KH
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