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authorIngo Molnar <mingo@elte.hu>2008-07-09 05:39:02 -0400
committerIngo Molnar <mingo@elte.hu>2008-07-09 05:39:02 -0400
commitd028203c0446c7f65ed2b22342a56f03c6c4a6c1 (patch)
tree6bd73a5c70b407491dc9d40ecb9e95b48233d004 /include/asm-x86/segment.h
parentf57e91682d141ea50d8c6d42cdc251b6256a3755 (diff)
parent183fe065652dbd64953afa9f389327e23e97967f (diff)
Merge branch 'x86/core' into x86/unify-pci
Diffstat (limited to 'include/asm-x86/segment.h')
-rw-r--r--include/asm-x86/segment.h23
1 files changed, 12 insertions, 11 deletions
diff --git a/include/asm-x86/segment.h b/include/asm-x86/segment.h
index ed5131dd7d92..dfc8601c0892 100644
--- a/include/asm-x86/segment.h
+++ b/include/asm-x86/segment.h
@@ -61,18 +61,14 @@
61#define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1) 61#define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)
62 62
63#define GDT_ENTRY_DEFAULT_USER_CS 14 63#define GDT_ENTRY_DEFAULT_USER_CS 14
64#define __USER_CS (GDT_ENTRY_DEFAULT_USER_CS * 8 + 3)
65 64
66#define GDT_ENTRY_DEFAULT_USER_DS 15 65#define GDT_ENTRY_DEFAULT_USER_DS 15
67#define __USER_DS (GDT_ENTRY_DEFAULT_USER_DS * 8 + 3)
68 66
69#define GDT_ENTRY_KERNEL_BASE 12 67#define GDT_ENTRY_KERNEL_BASE 12
70 68
71#define GDT_ENTRY_KERNEL_CS (GDT_ENTRY_KERNEL_BASE + 0) 69#define GDT_ENTRY_KERNEL_CS (GDT_ENTRY_KERNEL_BASE + 0)
72#define __KERNEL_CS (GDT_ENTRY_KERNEL_CS * 8)
73 70
74#define GDT_ENTRY_KERNEL_DS (GDT_ENTRY_KERNEL_BASE + 1) 71#define GDT_ENTRY_KERNEL_DS (GDT_ENTRY_KERNEL_BASE + 1)
75#define __KERNEL_DS (GDT_ENTRY_KERNEL_DS * 8)
76 72
77#define GDT_ENTRY_TSS (GDT_ENTRY_KERNEL_BASE + 4) 73#define GDT_ENTRY_TSS (GDT_ENTRY_KERNEL_BASE + 4)
78#define GDT_ENTRY_LDT (GDT_ENTRY_KERNEL_BASE + 5) 74#define GDT_ENTRY_LDT (GDT_ENTRY_KERNEL_BASE + 5)
@@ -139,10 +135,11 @@
139#else 135#else
140#include <asm/cache.h> 136#include <asm/cache.h>
141 137
142#define __KERNEL_CS 0x10 138#define GDT_ENTRY_KERNEL32_CS 1
143#define __KERNEL_DS 0x18 139#define GDT_ENTRY_KERNEL_CS 2
140#define GDT_ENTRY_KERNEL_DS 3
144 141
145#define __KERNEL32_CS 0x08 142#define __KERNEL32_CS (GDT_ENTRY_KERNEL32_CS * 8)
146 143
147/* 144/*
148 * we cannot use the same code segment descriptor for user and kernel 145 * we cannot use the same code segment descriptor for user and kernel
@@ -150,10 +147,10 @@
150 * The segment offset needs to contain a RPL. Grr. -AK 147 * The segment offset needs to contain a RPL. Grr. -AK
151 * GDT layout to get 64bit syscall right (sysret hardcodes gdt offsets) 148 * GDT layout to get 64bit syscall right (sysret hardcodes gdt offsets)
152 */ 149 */
153 150#define GDT_ENTRY_DEFAULT_USER32_CS 4
154#define __USER32_CS 0x23 /* 4*8+3 */ 151#define GDT_ENTRY_DEFAULT_USER_DS 5
155#define __USER_DS 0x2b /* 5*8+3 */ 152#define GDT_ENTRY_DEFAULT_USER_CS 6
156#define __USER_CS 0x33 /* 6*8+3 */ 153#define __USER32_CS (GDT_ENTRY_DEFAULT_USER32_CS * 8 + 3)
157#define __USER32_DS __USER_DS 154#define __USER32_DS __USER_DS
158 155
159#define GDT_ENTRY_TSS 8 /* needs two entries */ 156#define GDT_ENTRY_TSS 8 /* needs two entries */
@@ -175,6 +172,10 @@
175 172
176#endif 173#endif
177 174
175#define __KERNEL_CS (GDT_ENTRY_KERNEL_CS * 8)
176#define __KERNEL_DS (GDT_ENTRY_KERNEL_DS * 8)
177#define __USER_DS (GDT_ENTRY_DEFAULT_USER_DS* 8 + 3)
178#define __USER_CS (GDT_ENTRY_DEFAULT_USER_CS* 8 + 3)
178#ifndef CONFIG_PARAVIRT 179#ifndef CONFIG_PARAVIRT
179#define get_kernel_rpl() 0 180#define get_kernel_rpl() 0
180#endif 181#endif