linux-kernel - Re: [PATCH] mm: pageattr: convert noop to functional fix

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Message-ID: <20130410133346.GD6857@pd.tnic>
Date:	Wed, 10 Apr 2013 15:33:46 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Andrea Arcangeli <aarcange@...hat.com>
Cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Stefan Bader <stefan.bader@...onical.com>,
	Andy Whitcroft <apw@...onical.com>,
	Mel Gorman <mgorman@...e.de>
Subject: Re: [PATCH] mm: pageattr: convert noop to functional fix

On Wed, Apr 10, 2013 at 03:28:25PM +0200, Andrea Arcangeli wrote:
> Commit a8aed3e0752b4beb2e37cbed6df69faae88268da introduced some valid
> fix but one location that didn't trigger the bug that lead to finding
> those (small) problems, wasn't updated using the right variable.
> 
> The wrong variable was also initialized for no good reason, that may
> have been the source of the confusion. Remove the noop initialization
> accordingly.
> 
> Commit a8aed3e0752b4beb2e37cbed6df69faae88268da also erroneously
> removed one canon_pgprot pass meant to clear pmd bitflags not
> supported in hardware by older CPUs, that automatically gets corrected
> by this patch too by applying it to the right variable in the new
> location.
> 
> Reported-by: Stefan Bader <stefan.bader@...onical.com>
> Signed-off-by: Andrea Arcangeli <aarcange@...hat.com>

Acked-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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