Re: [PATCH v3] ARM: VDSO: put RO and RO after init objects into proper sections

From: Nathan Lynch
Date: Fri Aug 12 2016 - 14:40:28 EST


On 08/12/2016 01:06 PM, Kees Cook wrote:
> On Fri, Aug 12, 2016 at 1:12 AM, Jisheng Zhang <jszhang@xxxxxxxxxxx> wrote:
>> vdso_data_mapping is never modified, so mark it as const.
>>
>> vdso_total_pages, vdso_data_page, vdso_text_mapping and cntvct_ok are
>> initialized by vdso_init(), thereafter are read only.
>>
>> The fact that they are read only after init makes them candidates for
>> __ro_after_init declarations.
>>
>> Signed-off-by: Jisheng Zhang <jszhang@xxxxxxxxxxx>
>
> Looks great; thanks for keeping __ro_after_init in mind. :)
>
> Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>

Looks fine and nothing goes wrong with my vdso tests. Please send it
through Russell.

Acked-by: Nathan Lynch <nathan_lynch@xxxxxxxxxx>