linux-kernel - Re: [PATCH] xen/usb: Constify struct hc

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Message-ID: <1d4245fb-c48f-4e0a-8c69-c18f23b0fd5a@suse.com>
Date: Mon, 3 Nov 2025 14:25:55 +0100
From: Jürgen Groß <jgross@...e.com>
To: Christophe JAILLET <christophe.jaillet@...adoo.fr>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
 xen-devel@...ts.xenproject.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH] xen/usb: Constify struct hc_driver

On 26.10.25 11:51, Christophe JAILLET wrote:
> 'struct hc_driver' is not modified in this driver.
> 
> Constifying this structure moves some data to a read-only section, so
> increases overall security, especially when the structure holds some
> function pointers.
> 
> On a x86_64, with allmodconfig, as an example:
> Before:
> ======
>     text	   data	    bss	    dec	    hex	filename
>    52065	  23176	    256	  75497	  126e9	drivers/usb/host/xen-hcd.o
> 
> After:
> =====
>     text	   data	    bss	    dec	    hex	filename
>    52897	  22344	    256	  75497	  126e9	drivers/usb/host/xen-hcd.o
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>

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


Juergen

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