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
> >
> > --
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> > see: http://www.linux-mm.org/ .
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>
> --
> Kind regards,
> Minchan Kim
--
Kind regards,
Minchan Kim
--
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prev parent 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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