linux-kernel - [PATCH 2/3] arch/powerpc: use __page_aligned

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <483D82A1.7080406@goop.org>
Date:	Wed, 28 May 2008 17:04:49 +0100
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Paul Mackerras <paulus@...ba.org>,
	Andrew Morton <akpm@...ux-foundation.org>
CC:	Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Sam Ravnborg <sam@...nborg.org>
Subject: [PATCH 2/3] arch/powerpc: use __page_aligned_bss

The patch "make page-aligned data and bss less fragile" introduces
__page_aligned_data and __page_aligned_bss to make sure that page
aligned things remain so, even if there are non-page-sized
page-aligned things.

This paragraph converts an instance of an explicit section attribute
to __page_aligned_data.  It's purely decorative.

(It should be noted that powerpc already defines __page_aligned to
have the same meaning as __page_aligned_data in non-MODULE code.  Also
this particular case looks like it could be __page_aligned_bss rather
than data, but I didn't want to change the meaning of the code.)

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
Cc: Paul Mackerras <paulus@...ba.org>
---
 arch/powerpc/kernel/vdso.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

===================================================================
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/smp.h>
+#include <linux/linkage.h>
 #include <linux/stddef.h>
 #include <linux/unistd.h>
 #include <linux/slab.h>
@@ -74,7 +75,7 @@
 static union {
 	struct vdso_data	data;
 	u8			page[PAGE_SIZE];
-} vdso_data_store __attribute__((__section__(".data.page_aligned")));
+} vdso_data_store __page_aligned_data;
 struct vdso_data *vdso_data = &vdso_data_store.data;
 
 /* Format of the patch table */


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/