[PATCH 61/78] ARM: aarch64: mmu: Make zero page faulting

[Sascha Hauer]

Hi Andrey,

On Tue, Mar 20, 2018 at 09:53:56PM -0700, Andrey Smirnov wrote:
> On Fri, Mar 16, 2018 at 5:53 AM, Sascha Hauer <s.hauer at pengutronix.de> wrote:
> > Make zero page faulting which allows us to catch NULL pointer derefs.
> >
> > Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> > ---
> >  arch/arm/cpu/mmu_64.c | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/arch/arm/cpu/mmu_64.c b/arch/arm/cpu/mmu_64.c
> > index 20f6c387f3..094bc0ac62 100644
> > --- a/arch/arm/cpu/mmu_64.c
> > +++ b/arch/arm/cpu/mmu_64.c
> > @@ -316,6 +316,8 @@ static int mmu_init(void)
> >         for_each_memory_bank(bank)
> >                 create_sections(bank->start, bank->start, bank->size, CACHED_MEM);
> >
> > +       create_sections(0x0, 0x0, 0x1000, 0x0);
> 
> Sascha:
> 
> Maybe add commit message as comment to the line above as well?

Sorry, somehow I ended up ignoring this mail. I added a separate patch
adding a comment.

Sascha


-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |