linux-kernel - [PATCH v2 2/2] x86/boot: use already defined KEEP_SEGMENTS macro in head

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:	Sat, 31 Jan 2015 12:30:13 +0600
From:	Alexander Kuleshov <kuleshovmail@...il.com>
To:	Chris Mason <clm@...com>
Cc:	Josef Bacik <jbacik@...com>, David Sterba <dsterba@...e.cz>,
	linux-kernel@...r.kernel.org,
	Alexander Kuleshov <kuleshovmail@...il.com>
Subject: [PATCH v2 2/2] x86/boot: use already defined KEEP_SEGMENTS macro in head_{32,64}.S

There is already defined macro KEEP_SEGMENTS in the
bootparam.h, let's use it instead of shifting bits

Signed-off-by: Alexander Kuleshov <kuleshovmail@...il.com>
---
 arch/x86/boot/compressed/head_32.S | 5 +++--
 arch/x86/boot/compressed/head_64.S | 3 ++-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S
index 1d7fbbc..11e549d 100644
--- a/arch/x86/boot/compressed/head_32.S
+++ b/arch/x86/boot/compressed/head_32.S
@@ -29,7 +29,8 @@
 #include <asm/page_types.h>
 #include <asm/boot.h>
 #include <asm/asm-offsets.h>
-
+#include <asm/bootparam.h>
+	
 	__HEAD
 ENTRY(startup_32)
 #ifdef CONFIG_EFI_STUB
@@ -102,7 +103,7 @@ preferred_addr:
 	 * Test KEEP_SEGMENTS flag to see if the bootloader is asking
 	 * us to not reload segments
 	 */
-	testb	$(1<<6), BP_loadflags(%esi)
+	testb	$KEEP_SEGMENTS, BP_loadflags(%esi)
 	jnz	1f
 
 	cli
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
index 6b1766c..90c1521 100644
--- a/arch/x86/boot/compressed/head_64.S
+++ b/arch/x86/boot/compressed/head_64.S
@@ -31,6 +31,7 @@
 #include <asm/msr.h>
 #include <asm/processor-flags.h>
 #include <asm/asm-offsets.h>
+#include <asm/bootparam.h>
 
 	__HEAD
 	.code32
@@ -46,7 +47,7 @@ ENTRY(startup_32)
 	 * Test KEEP_SEGMENTS flag to see if the bootloader is asking
 	 * us to not reload segments
 	 */
-	testb $(1<<6), BP_loadflags(%esi)
+	testb $KEEP_SEGMENTS, BP_loadflags(%esi)
 	jnz 1f
 
 	cli
-- 
2.3.0-rc1

--
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/