[linux-yocto] [PATCH 30/30] ARM: 7670/1: fix the memset fix

[Nicolas Pitre]

On Thu, 1 May 2014, Greg Kroah-Hartman wrote:

> On Thu, May 01, 2014 at 08:29:52AM -0700, Charlie Paul wrote:
> > From: Nicolas Pitre <nicolas.pitre at linaro.org>
> > 
> > commit 418df63adac56841ef6b0f1fcf435bc64d4ed177 upstream.
> > 
> > Commit 455bd4c430b0 ("ARM: 7668/1: fix memset-related crashes caused by
> > recent GCC (4.7.2) optimizations") attempted to fix a compliance issue
> > with the memset return value.  However the memset itself became broken
> > by that patch for misaligned pointers.
> > 
> > This fixes the above by branching over the entry code from the
> > misaligned fixup code to avoid reloading the original pointer.
> > 
> > Also, because the function entry alignment is wrong in the Thumb mode
> > compilation, that fixup code is moved to the end.
> > 
> > While at it, the entry instructions are slightly reworked to help dual
> > issue pipelines.
> > 
> > Signed-off-by: Nicolas Pitre <nico at linaro.org>
> > Tested-by: Alexander Holler <holler at ahsoftware.de>
> > Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>
> > Cc: Eric Bénard <eric at eukrea.com>
> > Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
> > ---
> >  arch/arm/lib/memset.S |   22 +++-------------------
> >  1 file changed, 3 insertions(+), 19 deletions(-)
> 
> What is this patch for, and why send it to me?

No idea.  You did apply it to the stable trees you maintain quite a 
while a go already.


Nicolas