linux-kernel - [3.10][3.8][3.5] ARM: Fix FIQ code on VIVT CPUs (was Re: [PATCH 076/133] ARM: update FIQ support for relocation of vectors)

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Date:	Mon, 19 Aug 2013 09:02:23 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	Aaro Koskinen <aaro.koskinen@....fi>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Luis Henriques <luis.henriques@...onical.com>
Cc:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com,
	Russell King <rmk+kernel@....linux.org.uk>
Subject: [3.10][3.8][3.5] ARM: Fix FIQ code on VIVT CPUs (was Re: [PATCH
 076/133] ARM: update FIQ support for relocation of vectors)

Thanks Aaro.  I'll apply "2ba85e7 ARM: Fix FIQ code on VIVT CPUs" to
3.8-stable.

Greg KH and Luis Henriques:  Heads up!  3.10-stable and 3.5-stable also
need 2ba85e7 but it isn't marked cc: stable.

 -Kamal


On Mon, 2013-08-19 at 00:09 +0300, Aaro Koskinen wrote:
> On Fri, Aug 16, 2013 at 03:33:38PM -0700, Kamal Mostafa wrote:
> > 3.8.13.7 -stable review patch.  If anyone has any objections, please let me know.
> > 
> > ------------------
> > 
> > From: Russell King <rmk+kernel@....linux.org.uk>
> > 
> > commit e39e3f3ebfef03450cf7bfa7a974a8c61f7980c8 upstream.
> > 
> > FIQ should no longer copy the FIQ code into the user visible vector
> > page.  Instead, it should use the hidden page.  This change makes
> > that happen.
> 
> FYI, this patch introduced regression (kernel crash) at least on Amstrad
> E1 board (where FIQ is used for the keyboard). See the following thread:
> http://marc.info/?t=137583169900003&r=1&w=2
> 
> So any stable kernels where this patch was added should also take:
> 
> 	commit 2ba85e7af4c639d933c9a87a6d7363f2983d5ada
> 	Author: Russell King <rmk+kernel@....linux.org.uk>
> 	Date:   Thu Aug 8 11:51:21 2013 +0100
> 
> 	ARM: Fix FIQ code on VIVT CPUs
> 
> That patch fixes the regression.
> 
> A.
> 


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