linux-kernel - [PATCH 2/8] x86: define FIXADDR_BOOT_* and redefine FIX_ADDR

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Date:	Sun, 15 Feb 2009 21:48:53 -0300
From:	"Gustavo F. Padovan" <gustavo@....ic.unicamp.br>
To:	mingo@...e.hu
Cc:	glommer@...hat.com, linux-kernel@...r.kernel.org
Subject: [PATCH 2/8] 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 298d9ba..d905de0 100644
--- a/arch/x86/include/asm/fixmap_64.h
+++ b/arch/x86/include/asm/fixmap_64.h
@@ -69,8 +69,11 @@ 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)
-- 
1.6.0.6

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