linux-kernel - [PATCH v4 10/11] microblaze: Use is_kernel

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

Date:   Thu, 30 Sep 2021 15:11:42 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     <arnd@...db.de>, <linux-arch@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linuxppc-dev@...ts.ozlabs.org>,
        <rostedt@...dmis.org>, <mingo@...hat.com>, <davem@...emloft.net>,
        <ast@...nel.org>, <ryabinin.a.a@...il.com>,
        <akpm@...ux-foundation.org>
CC:     <mpe@...erman.id.au>, <benh@...nel.crashing.org>,
        <paulus@...ba.org>, <bpf@...r.kernel.org>,
        <linux-alpha@...r.kernel.org>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Michal Simek <monstr@...str.eu>
Subject: [PATCH v4 10/11] microblaze: Use is_kernel_text() helper

Use is_kernel_text() helper to simplify code.

Cc: Michal Simek <monstr@...str.eu>
Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
 arch/microblaze/mm/pgtable.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index c1833b159d3b..9f73265aad4e 100644
--- a/arch/microblaze/mm/pgtable.c
+++ b/arch/microblaze/mm/pgtable.c
@@ -34,6 +34,7 @@
 #include <linux/mm_types.h>
 #include <linux/pgtable.h>
 #include <linux/memblock.h>
+#include <linux/kallsyms.h>
 
 #include <asm/pgalloc.h>
 #include <linux/io.h>
@@ -171,7 +172,7 @@ void __init mapin_ram(void)
 	for (s = 0; s < lowmem_size; s += PAGE_SIZE) {
 		f = _PAGE_PRESENT | _PAGE_ACCESSED |
 				_PAGE_SHARED | _PAGE_HWEXEC;
-		if ((char *) v < _stext || (char *) v >= _etext)
+		if (!is_kernel_text(v))
 			f |= _PAGE_WRENABLE;
 		else
 			/* On the MicroBlaze, no user access
-- 
2.26.2