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-rw-r--r--arch/x86/kernel/vmlinux.lds.S86
1 files changed, 18 insertions, 68 deletions
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 0ccb57d5ee35..3c68fe2d46cf 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -45,9 +45,9 @@ PHDRS {
45 text PT_LOAD FLAGS(5); /* R_E */ 45 text PT_LOAD FLAGS(5); /* R_E */
46 data PT_LOAD FLAGS(7); /* RWE */ 46 data PT_LOAD FLAGS(7); /* RWE */
47#ifdef CONFIG_X86_64 47#ifdef CONFIG_X86_64
48 user PT_LOAD FLAGS(7); /* RWE */ 48 user PT_LOAD FLAGS(5); /* R_E */
49#ifdef CONFIG_SMP 49#ifdef CONFIG_SMP
50 percpu PT_LOAD FLAGS(7); /* RWE */ 50 percpu PT_LOAD FLAGS(6); /* RW_ */
51#endif 51#endif
52 init PT_LOAD FLAGS(7); /* RWE */ 52 init PT_LOAD FLAGS(7); /* RWE */
53#endif 53#endif
@@ -65,17 +65,11 @@ SECTIONS
65#endif 65#endif
66 66
67 /* Text and read-only data */ 67 /* Text and read-only data */
68
69 /* bootstrapping code */
70 .text.head : AT(ADDR(.text.head) - LOAD_OFFSET) {
71 _text = .;
72 *(.text.head)
73 } :text = 0x9090
74
75 /* The rest of the text */
76 .text : AT(ADDR(.text) - LOAD_OFFSET) { 68 .text : AT(ADDR(.text) - LOAD_OFFSET) {
69 _text = .;
70 /* bootstrapping code */
71 HEAD_TEXT
77#ifdef CONFIG_X86_32 72#ifdef CONFIG_X86_32
78 /* not really needed, already page aligned */
79 . = ALIGN(PAGE_SIZE); 73 . = ALIGN(PAGE_SIZE);
80 *(.text.page_aligned) 74 *(.text.page_aligned)
81#endif 75#endif
@@ -94,13 +88,7 @@ SECTIONS
94 88
95 NOTES :text :note 89 NOTES :text :note
96 90
97 /* Exception table */ 91 EXCEPTION_TABLE(16) :text = 0x9090
98 . = ALIGN(16);
99 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
100 __start___ex_table = .;
101 *(__ex_table)
102 __stop___ex_table = .;
103 } :text = 0x9090
104 92
105 RO_DATA(PAGE_SIZE) 93 RO_DATA(PAGE_SIZE)
106 94
@@ -118,7 +106,6 @@ SECTIONS
118#endif 106#endif
119 107
120 PAGE_ALIGNED_DATA(PAGE_SIZE) 108 PAGE_ALIGNED_DATA(PAGE_SIZE)
121 *(.data.idt)
122 109
123 CACHELINE_ALIGNED_DATA(CONFIG_X86_L1_CACHE_BYTES) 110 CACHELINE_ALIGNED_DATA(CONFIG_X86_L1_CACHE_BYTES)
124 111
@@ -135,24 +122,21 @@ SECTIONS
135#ifdef CONFIG_X86_64 122#ifdef CONFIG_X86_64
136 123
137#define VSYSCALL_ADDR (-10*1024*1024) 124#define VSYSCALL_ADDR (-10*1024*1024)
138#define VSYSCALL_PHYS_ADDR ((LOADADDR(.data) + SIZEOF(.data) + \
139 PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))
140#define VSYSCALL_VIRT_ADDR ((ADDR(.data) + SIZEOF(.data) + \
141 PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))
142 125
143#define VLOAD_OFFSET (VSYSCALL_ADDR - VSYSCALL_PHYS_ADDR) 126#define VLOAD_OFFSET (VSYSCALL_ADDR - __vsyscall_0 + LOAD_OFFSET)
144#define VLOAD(x) (ADDR(x) - VLOAD_OFFSET) 127#define VLOAD(x) (ADDR(x) - VLOAD_OFFSET)
145 128
146#define VVIRT_OFFSET (VSYSCALL_ADDR - VSYSCALL_VIRT_ADDR) 129#define VVIRT_OFFSET (VSYSCALL_ADDR - __vsyscall_0)
147#define VVIRT(x) (ADDR(x) - VVIRT_OFFSET) 130#define VVIRT(x) (ADDR(x) - VVIRT_OFFSET)
148 131
132 . = ALIGN(4096);
133 __vsyscall_0 = .;
134
149 . = VSYSCALL_ADDR; 135 . = VSYSCALL_ADDR;
150 .vsyscall_0 : AT(VSYSCALL_PHYS_ADDR) { 136 .vsyscall_0 : AT(VLOAD(.vsyscall_0)) {
151 *(.vsyscall_0) 137 *(.vsyscall_0)
152 } :user 138 } :user
153 139
154 __vsyscall_0 = VSYSCALL_VIRT_ADDR;
155
156 . = ALIGN(CONFIG_X86_L1_CACHE_BYTES); 140 . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
157 .vsyscall_fn : AT(VLOAD(.vsyscall_fn)) { 141 .vsyscall_fn : AT(VLOAD(.vsyscall_fn)) {
158 *(.vsyscall_fn) 142 *(.vsyscall_fn)
@@ -192,11 +176,9 @@ SECTIONS
192 *(.vsyscall_3) 176 *(.vsyscall_3)
193 } 177 }
194 178
195 . = VSYSCALL_VIRT_ADDR + PAGE_SIZE; 179 . = __vsyscall_0 + PAGE_SIZE;
196 180
197#undef VSYSCALL_ADDR 181#undef VSYSCALL_ADDR
198#undef VSYSCALL_PHYS_ADDR
199#undef VSYSCALL_VIRT_ADDR
200#undef VLOAD_OFFSET 182#undef VLOAD_OFFSET
201#undef VLOAD 183#undef VLOAD
202#undef VVIRT_OFFSET 184#undef VVIRT_OFFSET
@@ -219,36 +201,12 @@ SECTIONS
219 PERCPU_VADDR(0, :percpu) 201 PERCPU_VADDR(0, :percpu)
220#endif 202#endif
221 203
222 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { 204 INIT_TEXT_SECTION(PAGE_SIZE)
223 _sinittext = .;
224 INIT_TEXT
225 _einittext = .;
226 }
227#ifdef CONFIG_X86_64 205#ifdef CONFIG_X86_64
228 :init 206 :init
229#endif 207#endif
230 208
231 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { 209 INIT_DATA_SECTION(16)
232 INIT_DATA
233 }
234
235 . = ALIGN(16);
236 .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
237 __setup_start = .;
238 *(.init.setup)
239 __setup_end = .;
240 }
241 .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
242 __initcall_start = .;
243 INITCALLS
244 __initcall_end = .;
245 }
246
247 .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
248 __con_initcall_start = .;
249 *(.con_initcall.init)
250 __con_initcall_end = .;
251 }
252 210
253 .x86_cpu_dev.init : AT(ADDR(.x86_cpu_dev.init) - LOAD_OFFSET) { 211 .x86_cpu_dev.init : AT(ADDR(.x86_cpu_dev.init) - LOAD_OFFSET) {
254 __x86_cpu_dev_start = .; 212 __x86_cpu_dev_start = .;
@@ -256,8 +214,6 @@ SECTIONS
256 __x86_cpu_dev_end = .; 214 __x86_cpu_dev_end = .;
257 } 215 }
258 216
259 SECURITY_INIT
260
261 . = ALIGN(8); 217 . = ALIGN(8);
262 .parainstructions : AT(ADDR(.parainstructions) - LOAD_OFFSET) { 218 .parainstructions : AT(ADDR(.parainstructions) - LOAD_OFFSET) {
263 __parainstructions = .; 219 __parainstructions = .;
@@ -288,15 +244,6 @@ SECTIONS
288 EXIT_DATA 244 EXIT_DATA
289 } 245 }
290 246
291#ifdef CONFIG_BLK_DEV_INITRD
292 . = ALIGN(PAGE_SIZE);
293 .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
294 __initramfs_start = .;
295 *(.init.ramfs)
296 __initramfs_end = .;
297 }
298#endif
299
300#if !defined(CONFIG_X86_64) || !defined(CONFIG_SMP) 247#if !defined(CONFIG_X86_64) || !defined(CONFIG_SMP)
301 PERCPU(PAGE_SIZE) 248 PERCPU(PAGE_SIZE)
302#endif 249#endif
@@ -358,6 +305,9 @@ SECTIONS
358 305
359 306
360#ifdef CONFIG_X86_32 307#ifdef CONFIG_X86_32
308/*
309 * The ASSERT() sink to . is intentional, for binutils 2.14 compatibility:
310 */
361. = ASSERT((_end - LOAD_OFFSET <= KERNEL_IMAGE_SIZE), 311. = ASSERT((_end - LOAD_OFFSET <= KERNEL_IMAGE_SIZE),
362 "kernel image bigger than KERNEL_IMAGE_SIZE"); 312 "kernel image bigger than KERNEL_IMAGE_SIZE");
363#else 313#else