linux-kernel - Re: [patch 071/149] ARM: 6166/1: Proper prefetch abort handling on pre-ARMv6

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Date:	Fri, 2 Jul 2010 01:25:41 +0300
From:	"Kirill A. Shutemov" <kirill@...temov.name>
To:	Greg KH <gregkh@...e.de>
Cc:	linux-kernel@...r.kernel.org, stable@...nel.org,
	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Anfei Zhou <anfei.zhou@...il.com>,
	Russell King <rmk+kernel@....linux.org.uk>
Subject: Re: [patch 071/149] ARM: 6166/1: Proper prefetch abort handling on
 pre-ARMv6

On Thu, Jul 01, 2010 at 03:17:28PM -0700, Greg KH wrote:
> On Fri, Jul 02, 2010 at 01:14:20AM +0300, Kirill A. Shutemov wrote:
> > On Thu, Jul 01, 2010 at 10:31:37AM -0700, Greg KH wrote:
> > > 2.6.32-stable review patch.  If anyone has any objections, please let us know.
> > > 
> > > ------------------
> > > 
> > > From: Anfei <anfei.zhou@...il.com>
> > > 
> > > commit 5e27fb78df95e027723af2c90ecc9b4527ae59e9 upstream.
> > > 
> > > Instruction faults on pre-ARMv6 CPUs are interpreted as
> > > a 'translation fault', but do_translation_fault doesn't
> > > handle well if user mode trying to run instruction above
> > > TASK_SIZE, and result in the infinite retry of that
> > > instruction.
> >  
> > Actually, this patch helps also on ARMv6+. Probably, better to correct
> > commit message for stable.
> 
> We (well, I) like to keep the commit log identical to what is upstream
> just to make things easier all around.  Otherwise people start asking
> for spelling fixes, clarifications, and all sorts of other stuff (like
> this.)

Ok, fair enough.

I asked for it because I was confused by this commit message while
investigate (the same) problem on ARMv7 CPU.

-- 
 Kirill A. Shutemov
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