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

[Andrey Smirnov]

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?


Thanks,
Andrey Smirnov

> +
>         mmu_enable();
>
>         return 0;
> --
> 2.16.1
>
>
> _______________________________________________
> barebox mailing list
> barebox at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox