linux-kernel - [PATCH 2/6] x86: define FIXADDR_BOOT_* and redefine FIX_ADDR

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]

Message-Id: <1225592633-9948-3-git-send-email-gustavo@las.ic.unicamp.br>
Date:	Sun,  2 Nov 2008 00:23:49 -0200
From:	"Gustavo F. Padovan" <gustavo@....ic.unicamp.br>
To:	linux-kernel@...r.kernel.org
Cc:	glommer@...hat.com, mingo@...e.hu
Subject: [PATCH 2/6] x86: define FIXADDR_BOOT_* and redefine FIX_ADDR_SIZE

Now, with these macros, x86_64 code can know where start the
permanent and non-permanent fixed mapped address.
This patch make these macros equal fixmap_32.h for future
x86 integration.

Signed-off-by: Gustavo F. Padovan <gustavo@....ic.unicamp.br>
Acked-by: Glauber Costa <gcosta@...hat.com>
---
 arch/x86/include/asm/fixmap_64.h |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/fixmap_64.h b/arch/x86/include/asm/fixmap_64.h
index 00a30ab..678b9c5 100644
--- a/arch/x86/include/asm/fixmap_64.h
+++ b/arch/x86/include/asm/fixmap_64.h
@@ -73,8 +73,11 @@ enum fixed_addresses {
 };
 
 #define FIXADDR_TOP	(VSYSCALL_END-PAGE_SIZE)
-#define FIXADDR_SIZE	(__end_of_fixed_addresses << PAGE_SHIFT)
-#define FIXADDR_START	(FIXADDR_TOP - FIXADDR_SIZE)
+
+#define FIXADDR_SIZE	(__end_of_permanent_fixed_addresses << PAGE_SHIFT)
+#define FIXADDR_BOOT_SIZE	(__end_of_fixed_addresses << PAGE_SHIFT)
+#define FIXADDR_START		(FIXADDR_TOP - FIXADDR_SIZE)
+#define FIXADDR_BOOT_START	(FIXADDR_TOP - FIXADDR_BOOT_SIZE)
 
 /* Only covers 32bit vsyscalls currently. Need another set for 64bit. */
 #define FIXADDR_USER_START	((unsigned long)VSYSCALL32_VSYSCALL)
-- 
1.5.6.4

--
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/