linux-kernel - Re: [PATCH] xen/manage: Constify struct shutdown

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Date: Mon, 24 Jun 2024 08:34:48 +0200
From: Jürgen Groß <jgross@...e.com>
To: Christophe JAILLET <christophe.jaillet@...adoo.fr>,
 Stefano Stabellini <sstabellini@...nel.org>,
 Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>
Cc: linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
 xen-devel@...ts.xenproject.org
Subject: Re: [PATCH] xen/manage: Constify struct shutdown_handler

On 23.06.24 11:26, Christophe JAILLET wrote:
> 'struct shutdown_handler' is not modified in this driver.
> 
> Constifying this structure moves some data to a read-only section, so
> increase overall security.
> 
> On a x86_64, with allmodconfig:
> Before:
> ======
>     text	   data	    bss	    dec	    hex	filename
>     7043	    788	      8	   7839	   1e9f	drivers/xen/manage.o
> 
> After:
> =====
>     text	   data	    bss	    dec	    hex	filename
>     7164	    676	      8	   7848	   1ea8	drivers/xen/manage.o
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>

Reviewed-by: Juergen Gross <jgross@...e.com>


Juergen