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From: Minchan Kim <minchan.kim@gmail.com>
To: Uma shankar <shankar.vk@gmail.com>
Cc: linux-mm@kvack.org, linux-arm-kernel@lists.arm.linux.org.uk
Subject: Re: 4-Kb page-size for kernel in ARM-Cortex
Date: Fri, 4 Jun 2010 21:35:24 +0900	[thread overview]
Message-ID: <20100604123524.GB1879@barrios-desktop> (raw)
In-Reply-To: <20100604123234.GA1879@barrios-desktop>

My bad. wrong address. correct it. 

On Fri, Jun 04, 2010 at 09:32:34PM +0900, Minchan Kim wrote:
> On Thu, Jun 03, 2010 at 08:13:35PM +0530, Uma shankar wrote:
> > Hi,
> > 
> >           It is my understanding that  in ARM, the MMU setting for
> > kernel VA  range ( 0xc0000000 onwards )
> > is set up using the section-sized mapping ( 1 Mb in size ) ,  as this
> > range maps to a  contiguous physical address range.
> > 
> > I am trying out a memory-checking tool on Cortex.    This tool has the
> > requirement that it  needs to be able to set up  PTE for each 4 Kb
> > range of  kernel address.
> > 
> > So,  paging_init ( arch/arm/mm/mmu.c ) is modified for this.
> > 
> > But , with this MMU setting,   the kernel hangs somewhere  after
> > freeing init memory. ( "freeing init mem"  is the last print I see on
> > console. )
> > 
> > For  3-level page-table setting of kernel VA,  do I have to change
> > something else also ?
> 
> It's related to arm architecture. 
> Please, Cced linux-arm-kernel mailing list. 
> Maybe they can solve your problem. 
> 
> P.S) 
> Please send your patch with question, symptom more detail and oops 
> if you can get it. 
> 
> 
> > 
> >               thanks
> > 
> > --
> > To unsubscribe, send a message with 'unsubscribe linux-mm' in
> > the body to majordomo@kvack.org.  For more info on Linux MM,
> > see: http://www.linux-mm.org/ .
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> 
> -- 
> Kind regards,
> Minchan Kim

-- 
Kind regards,
Minchan Kim

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      reply	other threads:[~2010-06-04 12:35 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-03 14:43 Uma shankar
2010-06-04 12:32 ` Minchan Kim
2010-06-04 12:35   ` Minchan Kim [this message]

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