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

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Date:	Fri, 12 Aug 2016 13:40:18 -0500
From:	Nathan Lynch <Nathan_Lynch@...tor.com>
To:	Kees Cook <keescook@...omium.org>
CC:	Jisheng Zhang <jszhang@...vell.com>,
	Russell King <linux@...linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] ARM: VDSO: put RO and RO after init objects into
 proper sections

On 08/12/2016 01:06 PM, Kees Cook wrote:
> On Fri, Aug 12, 2016 at 1:12 AM, Jisheng Zhang <jszhang@...vell.com> 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@...vell.com>
> 
> Looks great; thanks for keeping __ro_after_init in mind. :)
> 
> Reviewed-by: Kees Cook <keescook@...omium.org>

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

Acked-by: Nathan Lynch <nathan_lynch@...tor.com>