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Message-ID: <ca1e75f66aed43191cf608de6593c7d6db9148f1.1719134768.git.christophe.jaillet@wanadoo.fr>
Date: Sun, 23 Jun 2024 11:26:50 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Juergen Gross <jgross@...e.com>,
Stefano Stabellini <sstabellini@...nel.org>,
Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>
Cc: linux-kernel@...r.kernel.org,
kernel-janitors@...r.kernel.org,
Christophe JAILLET <christophe.jaillet@...adoo.fr>,
xen-devel@...ts.xenproject.org
Subject: [PATCH] xen/manage: Constify struct shutdown_handler
'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>
---
Compile tested-only
---
drivers/xen/manage.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index c16df629907e..b4b4ebed68da 100644
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -208,7 +208,7 @@ static void do_reboot(void)
orderly_reboot();
}
-static struct shutdown_handler shutdown_handlers[] = {
+static const struct shutdown_handler shutdown_handlers[] = {
{ "poweroff", true, do_poweroff },
{ "halt", false, do_poweroff },
{ "reboot", true, do_reboot },
--
2.45.2
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