linux-kernel - [PATCH 2/3] [PATCH] unify common parts of segment.h

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Date:	Fri,  7 Dec 2007 14:22:41 -0200
From:	Glauber de Oliveira Costa <gcosta@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, glommer@...il.com, tglx@...utronix.de,
	mingo@...e.hu, ehabkost@...hat.com, jeremy@...p.org,
	avi@...ranet.com, anthony@...emonkey.ws,
	virtualization@...ts.linux-foundation.org, rusty@...tcorp.com.au,
	ak@...e.de, chrisw@...s-sol.org, rostedt@...dmis.org,
	hpa@...or.com, zach@...are.com,
	Glauber de Oliveira Costa <gcosta@...hat.com>
Subject: [PATCH 2/3] [PATCH] unify common parts of segment.h

Although segment handling in i386 and x86_64 are very different,
there's a common part. Put them in segment.h instead of arch specific
headers

Signed-off-by: Glauber de Oliveira Costa <gcosta@...hat.com>
---
 include/asm-x86/segment.h    |   16 ++++++++++++++++
 include/asm-x86/segment_32.h |   22 ----------------------
 include/asm-x86/segment_64.h |   17 -----------------
 3 files changed, 16 insertions(+), 39 deletions(-)

diff --git a/include/asm-x86/segment.h b/include/asm-x86/segment.h
index b3a7a3e..3c9b306 100644
--- a/include/asm-x86/segment.h
+++ b/include/asm-x86/segment.h
@@ -11,4 +11,20 @@
 #define get_kernel_rpl()  0
 #endif
 
+/* User mode is privilege level 3 */
+#define USER_RPL		0x3
+/* LDT segment has TI set, GDT has it cleared */
+#define SEGMENT_LDT		0x4
+#define SEGMENT_GDT		0x0
+
+/* Bottom two bits of selector give the ring privilege level */
+#define SEGMENT_RPL_MASK	0x3
+/* Bit 2 is table indicator (LDT/GDT) */
+#define SEGMENT_TI_MASK		0x4
+
+#define IDT_ENTRIES 256
+#define GDT_SIZE (GDT_ENTRIES * 8)
+#define GDT_ENTRY_TLS_ENTRIES 3
+#define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8)
+
 #endif
diff --git a/include/asm-x86/segment_32.h b/include/asm-x86/segment_32.h
index ff186e3..3e133ad 100644
--- a/include/asm-x86/segment_32.h
+++ b/include/asm-x86/segment_32.h
@@ -45,12 +45,9 @@
  *  30 - unused
  *  31 - TSS for double fault handler
  */
-#define GDT_ENTRY_TLS_ENTRIES	3
 #define GDT_ENTRY_TLS_MIN	6
 #define GDT_ENTRY_TLS_MAX 	(GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)
 
-#define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8)
-
 #define GDT_ENTRY_DEFAULT_USER_CS	14
 #define __USER_CS (GDT_ENTRY_DEFAULT_USER_CS * 8 + 3)
 
@@ -87,7 +84,6 @@
  * The GDT has 32 entries
  */
 #define GDT_ENTRIES 32
-#define GDT_SIZE (GDT_ENTRIES * 8)
 
 /* Simple and small GDT entries for booting only */
 
@@ -112,24 +108,6 @@
 #define PNP_TS2    (GDT_ENTRY_PNPBIOS_TS2 * 8)	/* another data segment */
 
 /*
- * The interrupt descriptor table has room for 256 idt's,
- * the global descriptor table is dependent on the number
- * of tasks we can have..
- */
-#define IDT_ENTRIES 256
-
-/* Bottom two bits of selector give the ring privilege level */
-#define SEGMENT_RPL_MASK	0x3
-/* Bit 2 is table indicator (LDT/GDT) */
-#define SEGMENT_TI_MASK		0x4
-
-/* User mode is privilege level 3 */
-#define USER_RPL		0x3
-/* LDT segment has TI set, GDT has it cleared */
-#define SEGMENT_LDT		0x4
-#define SEGMENT_GDT		0x0
-
-/*
  * Matching rules for certain types of segments.
  */
 
diff --git a/include/asm-x86/segment_64.h b/include/asm-x86/segment_64.h
index dce7421..5cc7deb 100644
--- a/include/asm-x86/segment_64.h
+++ b/include/asm-x86/segment_64.h
@@ -33,8 +33,6 @@
 #define GDT_ENTRY_TLS_MIN 12
 #define GDT_ENTRY_TLS_MAX 14
 
-#define GDT_ENTRY_TLS_ENTRIES 3
-
 #define GDT_ENTRY_PER_CPU 15	/* Abused to load per CPU data from limit */
 #define __PER_CPU_SEG	(GDT_ENTRY_PER_CPU * 8 + 3)
 
@@ -45,20 +43,5 @@
 #define GS_TLS_SEL ((GDT_ENTRY_TLS_MIN+GS_TLS)*8 + 3)
 #define FS_TLS_SEL ((GDT_ENTRY_TLS_MIN+FS_TLS)*8 + 3)
 
-#define IDT_ENTRIES 256
 #define GDT_ENTRIES 16
-#define GDT_SIZE (GDT_ENTRIES * 8)
-#define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8) 
-
-/* Bottom two bits of selector give the ring privilege level */
-#define SEGMENT_RPL_MASK	0x3
-/* Bit 2 is table indicator (LDT/GDT) */
-#define SEGMENT_TI_MASK		0x4
-
-/* User mode is privilege level 3 */
-#define USER_RPL		0x3
-/* LDT segment has TI set, GDT has it cleared */
-#define SEGMENT_LDT		0x4
-#define SEGMENT_GDT		0x0
-
 #endif
-- 
1.4.4.2

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