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-rw-r--r--arch/i386/kernel/Makefile2
-rw-r--r--arch/i386/kernel/alternative.c321
-rw-r--r--arch/i386/kernel/apic.c1
-rw-r--r--arch/i386/kernel/cpu/centaur.c1
-rw-r--r--arch/i386/kernel/cpu/common.c47
-rw-r--r--arch/i386/kernel/cpu/cpufreq/powernow-k8.c4
-rw-r--r--arch/i386/kernel/cpu/intel.c12
-rw-r--r--arch/i386/kernel/cpu/intel_cacheinfo.c4
-rw-r--r--arch/i386/kernel/cpu/proc.c2
-rw-r--r--arch/i386/kernel/crash.c2
-rw-r--r--arch/i386/kernel/entry.S4
-rw-r--r--arch/i386/kernel/head.S5
-rw-r--r--arch/i386/kernel/io_apic.c25
-rw-r--r--arch/i386/kernel/kprobes.c4
-rw-r--r--arch/i386/kernel/module.c32
-rw-r--r--arch/i386/kernel/mpparse.c7
-rw-r--r--arch/i386/kernel/nmi.c6
-rw-r--r--arch/i386/kernel/process.c2
-rw-r--r--arch/i386/kernel/ptrace.c4
-rw-r--r--arch/i386/kernel/semaphore.c8
-rw-r--r--arch/i386/kernel/setup.c118
-rw-r--r--arch/i386/kernel/signal.c7
-rw-r--r--arch/i386/kernel/smpboot.c3
-rw-r--r--arch/i386/kernel/topology.c9
-rw-r--r--arch/i386/kernel/traps.c57
-rw-r--r--arch/i386/kernel/vmlinux.lds.S20
-rw-r--r--arch/i386/kernel/vsyscall-sysenter.S3
27 files changed, 506 insertions, 204 deletions
diff --git a/arch/i386/kernel/Makefile b/arch/i386/kernel/Makefile
index 65656c033d70..5b9ed21216cf 100644
--- a/arch/i386/kernel/Makefile
+++ b/arch/i386/kernel/Makefile
@@ -7,7 +7,7 @@ extra-y := head.o init_task.o vmlinux.lds
7obj-y := process.o semaphore.o signal.o entry.o traps.o irq.o \ 7obj-y := process.o semaphore.o signal.o entry.o traps.o irq.o \
8 ptrace.o time.o ioport.o ldt.o setup.o i8259.o sys_i386.o \ 8 ptrace.o time.o ioport.o ldt.o setup.o i8259.o sys_i386.o \
9 pci-dma.o i386_ksyms.o i387.o dmi_scan.o bootflag.o \ 9 pci-dma.o i386_ksyms.o i387.o dmi_scan.o bootflag.o \
10 quirks.o i8237.o topology.o 10 quirks.o i8237.o topology.o alternative.o
11 11
12obj-y += cpu/ 12obj-y += cpu/
13obj-y += timers/ 13obj-y += timers/
diff --git a/arch/i386/kernel/alternative.c b/arch/i386/kernel/alternative.c
new file mode 100644
index 000000000000..5cbd6f99fb2a
--- /dev/null
+++ b/arch/i386/kernel/alternative.c
@@ -0,0 +1,321 @@
1#include <linux/module.h>
2#include <linux/spinlock.h>
3#include <linux/list.h>
4#include <asm/alternative.h>
5#include <asm/sections.h>
6
7#define DEBUG 0
8#if DEBUG
9# define DPRINTK(fmt, args...) printk(fmt, args)
10#else
11# define DPRINTK(fmt, args...)
12#endif
13
14/* Use inline assembly to define this because the nops are defined
15 as inline assembly strings in the include files and we cannot
16 get them easily into strings. */
17asm("\t.data\nintelnops: "
18 GENERIC_NOP1 GENERIC_NOP2 GENERIC_NOP3 GENERIC_NOP4 GENERIC_NOP5 GENERIC_NOP6
19 GENERIC_NOP7 GENERIC_NOP8);
20asm("\t.data\nk8nops: "
21 K8_NOP1 K8_NOP2 K8_NOP3 K8_NOP4 K8_NOP5 K8_NOP6
22 K8_NOP7 K8_NOP8);
23asm("\t.data\nk7nops: "
24 K7_NOP1 K7_NOP2 K7_NOP3 K7_NOP4 K7_NOP5 K7_NOP6
25 K7_NOP7 K7_NOP8);
26
27extern unsigned char intelnops[], k8nops[], k7nops[];
28static unsigned char *intel_nops[ASM_NOP_MAX+1] = {
29 NULL,
30 intelnops,
31 intelnops + 1,
32 intelnops + 1 + 2,
33 intelnops + 1 + 2 + 3,
34 intelnops + 1 + 2 + 3 + 4,
35 intelnops + 1 + 2 + 3 + 4 + 5,
36 intelnops + 1 + 2 + 3 + 4 + 5 + 6,
37 intelnops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
38};
39static unsigned char *k8_nops[ASM_NOP_MAX+1] = {
40 NULL,
41 k8nops,
42 k8nops + 1,
43 k8nops + 1 + 2,
44 k8nops + 1 + 2 + 3,
45 k8nops + 1 + 2 + 3 + 4,
46 k8nops + 1 + 2 + 3 + 4 + 5,
47 k8nops + 1 + 2 + 3 + 4 + 5 + 6,
48 k8nops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
49};
50static unsigned char *k7_nops[ASM_NOP_MAX+1] = {
51 NULL,
52 k7nops,
53 k7nops + 1,
54 k7nops + 1 + 2,
55 k7nops + 1 + 2 + 3,
56 k7nops + 1 + 2 + 3 + 4,
57 k7nops + 1 + 2 + 3 + 4 + 5,
58 k7nops + 1 + 2 + 3 + 4 + 5 + 6,
59 k7nops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
60};
61static struct nop {
62 int cpuid;
63 unsigned char **noptable;
64} noptypes[] = {
65 { X86_FEATURE_K8, k8_nops },
66 { X86_FEATURE_K7, k7_nops },
67 { -1, NULL }
68};
69
70
71extern struct alt_instr __alt_instructions[], __alt_instructions_end[];
72extern struct alt_instr __smp_alt_instructions[], __smp_alt_instructions_end[];
73extern u8 *__smp_locks[], *__smp_locks_end[];
74
75extern u8 __smp_alt_begin[], __smp_alt_end[];
76
77
78static unsigned char** find_nop_table(void)
79{
80 unsigned char **noptable = intel_nops;
81 int i;
82
83 for (i = 0; noptypes[i].cpuid >= 0; i++) {
84 if (boot_cpu_has(noptypes[i].cpuid)) {
85 noptable = noptypes[i].noptable;
86 break;
87 }
88 }
89 return noptable;
90}
91
92/* Replace instructions with better alternatives for this CPU type.
93 This runs before SMP is initialized to avoid SMP problems with
94 self modifying code. This implies that assymetric systems where
95 APs have less capabilities than the boot processor are not handled.
96 Tough. Make sure you disable such features by hand. */
97
98void apply_alternatives(struct alt_instr *start, struct alt_instr *end)
99{
100 unsigned char **noptable = find_nop_table();
101 struct alt_instr *a;
102 int diff, i, k;
103
104 DPRINTK("%s: alt table %p -> %p\n", __FUNCTION__, start, end);
105 for (a = start; a < end; a++) {
106 BUG_ON(a->replacementlen > a->instrlen);
107 if (!boot_cpu_has(a->cpuid))
108 continue;
109 memcpy(a->instr, a->replacement, a->replacementlen);
110 diff = a->instrlen - a->replacementlen;
111 /* Pad the rest with nops */
112 for (i = a->replacementlen; diff > 0; diff -= k, i += k) {
113 k = diff;
114 if (k > ASM_NOP_MAX)
115 k = ASM_NOP_MAX;
116 memcpy(a->instr + i, noptable[k], k);
117 }
118 }
119}
120
121static void alternatives_smp_save(struct alt_instr *start, struct alt_instr *end)
122{
123 struct alt_instr *a;
124
125 DPRINTK("%s: alt table %p-%p\n", __FUNCTION__, start, end);
126 for (a = start; a < end; a++) {
127 memcpy(a->replacement + a->replacementlen,
128 a->instr,
129 a->instrlen);
130 }
131}
132
133static void alternatives_smp_apply(struct alt_instr *start, struct alt_instr *end)
134{
135 struct alt_instr *a;
136
137 for (a = start; a < end; a++) {
138 memcpy(a->instr,
139 a->replacement + a->replacementlen,
140 a->instrlen);
141 }
142}
143
144static void alternatives_smp_lock(u8 **start, u8 **end, u8 *text, u8 *text_end)
145{
146 u8 **ptr;
147
148 for (ptr = start; ptr < end; ptr++) {
149 if (*ptr < text)
150 continue;
151 if (*ptr > text_end)
152 continue;
153 **ptr = 0xf0; /* lock prefix */
154 };
155}
156
157static void alternatives_smp_unlock(u8 **start, u8 **end, u8 *text, u8 *text_end)
158{
159 unsigned char **noptable = find_nop_table();
160 u8 **ptr;
161
162 for (ptr = start; ptr < end; ptr++) {
163 if (*ptr < text)
164 continue;
165 if (*ptr > text_end)
166 continue;
167 **ptr = noptable[1][0];
168 };
169}
170
171struct smp_alt_module {
172 /* what is this ??? */
173 struct module *mod;
174 char *name;
175
176 /* ptrs to lock prefixes */
177 u8 **locks;
178 u8 **locks_end;
179
180 /* .text segment, needed to avoid patching init code ;) */
181 u8 *text;
182 u8 *text_end;
183
184 struct list_head next;
185};
186static LIST_HEAD(smp_alt_modules);
187static DEFINE_SPINLOCK(smp_alt);
188
189static int smp_alt_once = 0;
190static int __init bootonly(char *str)
191{
192 smp_alt_once = 1;
193 return 1;
194}
195__setup("smp-alt-boot", bootonly);
196
197void alternatives_smp_module_add(struct module *mod, char *name,
198 void *locks, void *locks_end,
199 void *text, void *text_end)
200{
201 struct smp_alt_module *smp;
202 unsigned long flags;
203
204 if (smp_alt_once) {
205 if (boot_cpu_has(X86_FEATURE_UP))
206 alternatives_smp_unlock(locks, locks_end,
207 text, text_end);
208 return;
209 }
210
211 smp = kzalloc(sizeof(*smp), GFP_KERNEL);
212 if (NULL == smp)
213 return; /* we'll run the (safe but slow) SMP code then ... */
214
215 smp->mod = mod;
216 smp->name = name;
217 smp->locks = locks;
218 smp->locks_end = locks_end;
219 smp->text = text;
220 smp->text_end = text_end;
221 DPRINTK("%s: locks %p -> %p, text %p -> %p, name %s\n",
222 __FUNCTION__, smp->locks, smp->locks_end,
223 smp->text, smp->text_end, smp->name);
224
225 spin_lock_irqsave(&smp_alt, flags);
226 list_add_tail(&smp->next, &smp_alt_modules);
227 if (boot_cpu_has(X86_FEATURE_UP))
228 alternatives_smp_unlock(smp->locks, smp->locks_end,
229 smp->text, smp->text_end);
230 spin_unlock_irqrestore(&smp_alt, flags);
231}
232
233void alternatives_smp_module_del(struct module *mod)
234{
235 struct smp_alt_module *item;
236 unsigned long flags;
237
238 if (smp_alt_once)
239 return;
240
241 spin_lock_irqsave(&smp_alt, flags);
242 list_for_each_entry(item, &smp_alt_modules, next) {
243 if (mod != item->mod)
244 continue;
245 list_del(&item->next);
246 spin_unlock_irqrestore(&smp_alt, flags);
247 DPRINTK("%s: %s\n", __FUNCTION__, item->name);
248 kfree(item);
249 return;
250 }
251 spin_unlock_irqrestore(&smp_alt, flags);
252}
253
254void alternatives_smp_switch(int smp)
255{
256 struct smp_alt_module *mod;
257 unsigned long flags;
258
259 if (smp_alt_once)
260 return;
261 BUG_ON(!smp && (num_online_cpus() > 1));
262
263 spin_lock_irqsave(&smp_alt, flags);
264 if (smp) {
265 printk(KERN_INFO "SMP alternatives: switching to SMP code\n");
266 clear_bit(X86_FEATURE_UP, boot_cpu_data.x86_capability);
267 clear_bit(X86_FEATURE_UP, cpu_data[0].x86_capability);
268 alternatives_smp_apply(__smp_alt_instructions,
269 __smp_alt_instructions_end);
270 list_for_each_entry(mod, &smp_alt_modules, next)
271 alternatives_smp_lock(mod->locks, mod->locks_end,
272 mod->text, mod->text_end);
273 } else {
274 printk(KERN_INFO "SMP alternatives: switching to UP code\n");
275 set_bit(X86_FEATURE_UP, boot_cpu_data.x86_capability);
276 set_bit(X86_FEATURE_UP, cpu_data[0].x86_capability);
277 apply_alternatives(__smp_alt_instructions,
278 __smp_alt_instructions_end);
279 list_for_each_entry(mod, &smp_alt_modules, next)
280 alternatives_smp_unlock(mod->locks, mod->locks_end,
281 mod->text, mod->text_end);
282 }
283 spin_unlock_irqrestore(&smp_alt, flags);
284}
285
286void __init alternative_instructions(void)
287{
288 apply_alternatives(__alt_instructions, __alt_instructions_end);
289
290 /* switch to patch-once-at-boottime-only mode and free the
291 * tables in case we know the number of CPUs will never ever
292 * change */
293#ifdef CONFIG_HOTPLUG_CPU
294 if (num_possible_cpus() < 2)
295 smp_alt_once = 1;
296#else
297 smp_alt_once = 1;
298#endif
299
300 if (smp_alt_once) {
301 if (1 == num_possible_cpus()) {
302 printk(KERN_INFO "SMP alternatives: switching to UP code\n");
303 set_bit(X86_FEATURE_UP, boot_cpu_data.x86_capability);
304 set_bit(X86_FEATURE_UP, cpu_data[0].x86_capability);
305 apply_alternatives(__smp_alt_instructions,
306 __smp_alt_instructions_end);
307 alternatives_smp_unlock(__smp_locks, __smp_locks_end,
308 _text, _etext);
309 }
310 free_init_pages("SMP alternatives",
311 (unsigned long)__smp_alt_begin,
312 (unsigned long)__smp_alt_end);
313 } else {
314 alternatives_smp_save(__smp_alt_instructions,
315 __smp_alt_instructions_end);
316 alternatives_smp_module_add(NULL, "core kernel",
317 __smp_locks, __smp_locks_end,
318 _text, _etext);
319 alternatives_smp_switch(0);
320 }
321}
diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c
index 776c90989e06..eb5279d23b7f 100644
--- a/arch/i386/kernel/apic.c
+++ b/arch/i386/kernel/apic.c
@@ -38,6 +38,7 @@
38#include <asm/i8253.h> 38#include <asm/i8253.h>
39 39
40#include <mach_apic.h> 40#include <mach_apic.h>
41#include <mach_apicdef.h>
41#include <mach_ipi.h> 42#include <mach_ipi.h>
42 43
43#include "io_ports.h" 44#include "io_ports.h"
diff --git a/arch/i386/kernel/cpu/centaur.c b/arch/i386/kernel/cpu/centaur.c
index f52669ecb93f..bd75629dd262 100644
--- a/arch/i386/kernel/cpu/centaur.c
+++ b/arch/i386/kernel/cpu/centaur.c
@@ -4,6 +4,7 @@
4#include <asm/processor.h> 4#include <asm/processor.h>
5#include <asm/msr.h> 5#include <asm/msr.h>
6#include <asm/e820.h> 6#include <asm/e820.h>
7#include <asm/mtrr.h>
7#include "cpu.h" 8#include "cpu.h"
8 9
9#ifdef CONFIG_X86_OOSTORE 10#ifdef CONFIG_X86_OOSTORE
diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c
index e6bd095ae108..7e3d6b6a4e96 100644
--- a/arch/i386/kernel/cpu/common.c
+++ b/arch/i386/kernel/cpu/common.c
@@ -25,9 +25,10 @@ EXPORT_PER_CPU_SYMBOL(cpu_gdt_descr);
25DEFINE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]); 25DEFINE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]);
26EXPORT_PER_CPU_SYMBOL(cpu_16bit_stack); 26EXPORT_PER_CPU_SYMBOL(cpu_16bit_stack);
27 27
28static int cachesize_override __devinitdata = -1; 28static int cachesize_override __cpuinitdata = -1;
29static int disable_x86_fxsr __devinitdata = 0; 29static int disable_x86_fxsr __cpuinitdata;
30static int disable_x86_serial_nr __devinitdata = 1; 30static int disable_x86_serial_nr __cpuinitdata = 1;
31static int disable_x86_sep __cpuinitdata;
31 32
32struct cpu_dev * cpu_devs[X86_VENDOR_NUM] = {}; 33struct cpu_dev * cpu_devs[X86_VENDOR_NUM] = {};
33 34
@@ -59,7 +60,7 @@ static int __init cachesize_setup(char *str)
59} 60}
60__setup("cachesize=", cachesize_setup); 61__setup("cachesize=", cachesize_setup);
61 62
62int __devinit get_model_name(struct cpuinfo_x86 *c) 63int __cpuinit get_model_name(struct cpuinfo_x86 *c)
63{ 64{
64 unsigned int *v; 65 unsigned int *v;
65 char *p, *q; 66 char *p, *q;
@@ -89,7 +90,7 @@ int __devinit get_model_name(struct cpuinfo_x86 *c)
89} 90}
90 91
91 92
92void __devinit display_cacheinfo(struct cpuinfo_x86 *c) 93void __cpuinit display_cacheinfo(struct cpuinfo_x86 *c)
93{ 94{
94 unsigned int n, dummy, ecx, edx, l2size; 95 unsigned int n, dummy, ecx, edx, l2size;
95 96
@@ -130,7 +131,7 @@ void __devinit display_cacheinfo(struct cpuinfo_x86 *c)
130/* in particular, if CPUID levels 0x80000002..4 are supported, this isn't used */ 131/* in particular, if CPUID levels 0x80000002..4 are supported, this isn't used */
131 132
132/* Look up CPU names by table lookup. */ 133/* Look up CPU names by table lookup. */
133static char __devinit *table_lookup_model(struct cpuinfo_x86 *c) 134static char __cpuinit *table_lookup_model(struct cpuinfo_x86 *c)
134{ 135{
135 struct cpu_model_info *info; 136 struct cpu_model_info *info;
136 137
@@ -151,7 +152,7 @@ static char __devinit *table_lookup_model(struct cpuinfo_x86 *c)
151} 152}
152 153
153 154
154static void __devinit get_cpu_vendor(struct cpuinfo_x86 *c, int early) 155static void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c, int early)
155{ 156{
156 char *v = c->x86_vendor_id; 157 char *v = c->x86_vendor_id;
157 int i; 158 int i;
@@ -187,6 +188,14 @@ static int __init x86_fxsr_setup(char * s)
187__setup("nofxsr", x86_fxsr_setup); 188__setup("nofxsr", x86_fxsr_setup);
188 189
189 190
191static int __init x86_sep_setup(char * s)
192{
193 disable_x86_sep = 1;
194 return 1;
195}
196__setup("nosep", x86_sep_setup);
197
198
190/* Standard macro to see if a specific flag is changeable */ 199/* Standard macro to see if a specific flag is changeable */
191static inline int flag_is_changeable_p(u32 flag) 200static inline int flag_is_changeable_p(u32 flag)
192{ 201{
@@ -210,7 +219,7 @@ static inline int flag_is_changeable_p(u32 flag)
210 219
211 220
212/* Probe for the CPUID instruction */ 221/* Probe for the CPUID instruction */
213static int __devinit have_cpuid_p(void) 222static int __cpuinit have_cpuid_p(void)
214{ 223{
215 return flag_is_changeable_p(X86_EFLAGS_ID); 224 return flag_is_changeable_p(X86_EFLAGS_ID);
216} 225}
@@ -254,7 +263,7 @@ static void __init early_cpu_detect(void)
254 } 263 }
255} 264}
256 265
257void __devinit generic_identify(struct cpuinfo_x86 * c) 266void __cpuinit generic_identify(struct cpuinfo_x86 * c)
258{ 267{
259 u32 tfms, xlvl; 268 u32 tfms, xlvl;
260 int junk; 269 int junk;
@@ -307,7 +316,7 @@ void __devinit generic_identify(struct cpuinfo_x86 * c)
307#endif 316#endif
308} 317}
309 318
310static void __devinit squash_the_stupid_serial_number(struct cpuinfo_x86 *c) 319static void __cpuinit squash_the_stupid_serial_number(struct cpuinfo_x86 *c)
311{ 320{
312 if (cpu_has(c, X86_FEATURE_PN) && disable_x86_serial_nr ) { 321 if (cpu_has(c, X86_FEATURE_PN) && disable_x86_serial_nr ) {
313 /* Disable processor serial number */ 322 /* Disable processor serial number */
@@ -335,7 +344,7 @@ __setup("serialnumber", x86_serial_nr_setup);
335/* 344/*
336 * This does the hard work of actually picking apart the CPU stuff... 345 * This does the hard work of actually picking apart the CPU stuff...
337 */ 346 */
338void __devinit identify_cpu(struct cpuinfo_x86 *c) 347void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
339{ 348{
340 int i; 349 int i;
341 350
@@ -405,6 +414,10 @@ void __devinit identify_cpu(struct cpuinfo_x86 *c)
405 clear_bit(X86_FEATURE_XMM, c->x86_capability); 414 clear_bit(X86_FEATURE_XMM, c->x86_capability);
406 } 415 }
407 416
417 /* SEP disabled? */
418 if (disable_x86_sep)
419 clear_bit(X86_FEATURE_SEP, c->x86_capability);
420
408 if (disable_pse) 421 if (disable_pse)
409 clear_bit(X86_FEATURE_PSE, c->x86_capability); 422 clear_bit(X86_FEATURE_PSE, c->x86_capability);
410 423
@@ -417,7 +430,7 @@ void __devinit identify_cpu(struct cpuinfo_x86 *c)
417 else 430 else
418 /* Last resort... */ 431 /* Last resort... */
419 sprintf(c->x86_model_id, "%02x/%02x", 432 sprintf(c->x86_model_id, "%02x/%02x",
420 c->x86_vendor, c->x86_model); 433 c->x86, c->x86_model);
421 } 434 }
422 435
423 /* Now the feature flags better reflect actual CPU features! */ 436 /* Now the feature flags better reflect actual CPU features! */
@@ -453,7 +466,7 @@ void __devinit identify_cpu(struct cpuinfo_x86 *c)
453} 466}
454 467
455#ifdef CONFIG_X86_HT 468#ifdef CONFIG_X86_HT
456void __devinit detect_ht(struct cpuinfo_x86 *c) 469void __cpuinit detect_ht(struct cpuinfo_x86 *c)
457{ 470{
458 u32 eax, ebx, ecx, edx; 471 u32 eax, ebx, ecx, edx;
459 int index_msb, core_bits; 472 int index_msb, core_bits;
@@ -500,7 +513,7 @@ void __devinit detect_ht(struct cpuinfo_x86 *c)
500} 513}
501#endif 514#endif
502 515
503void __devinit print_cpu_info(struct cpuinfo_x86 *c) 516void __cpuinit print_cpu_info(struct cpuinfo_x86 *c)
504{ 517{
505 char *vendor = NULL; 518 char *vendor = NULL;
506 519
@@ -523,7 +536,7 @@ void __devinit print_cpu_info(struct cpuinfo_x86 *c)
523 printk("\n"); 536 printk("\n");
524} 537}
525 538
526cpumask_t cpu_initialized __devinitdata = CPU_MASK_NONE; 539cpumask_t cpu_initialized __cpuinitdata = CPU_MASK_NONE;
527 540
528/* This is hacky. :) 541/* This is hacky. :)
529 * We're emulating future behavior. 542 * We're emulating future behavior.
@@ -570,7 +583,7 @@ void __init early_cpu_init(void)
570 * and IDT. We reload them nevertheless, this function acts as a 583 * and IDT. We reload them nevertheless, this function acts as a
571 * 'CPU state barrier', nothing should get across. 584 * 'CPU state barrier', nothing should get across.
572 */ 585 */
573void __devinit cpu_init(void) 586void __cpuinit cpu_init(void)
574{ 587{
575 int cpu = smp_processor_id(); 588 int cpu = smp_processor_id();
576 struct tss_struct * t = &per_cpu(init_tss, cpu); 589 struct tss_struct * t = &per_cpu(init_tss, cpu);
@@ -670,7 +683,7 @@ void __devinit cpu_init(void)
670} 683}
671 684
672#ifdef CONFIG_HOTPLUG_CPU 685#ifdef CONFIG_HOTPLUG_CPU
673void __devinit cpu_uninit(void) 686void __cpuinit cpu_uninit(void)
674{ 687{
675 int cpu = raw_smp_processor_id(); 688 int cpu = raw_smp_processor_id();
676 cpu_clear(cpu, cpu_initialized); 689 cpu_clear(cpu, cpu_initialized);
diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
index e11a09207ec8..3d5110b65cc3 100644
--- a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
@@ -1145,9 +1145,7 @@ static int __cpuinit powernowk8_init(void)
1145{ 1145{
1146 unsigned int i, supported_cpus = 0; 1146 unsigned int i, supported_cpus = 0;
1147 1147
1148 for (i=0; i<NR_CPUS; i++) { 1148 for_each_cpu(i) {
1149 if (!cpu_online(i))
1150 continue;
1151 if (check_supported_cpu(i)) 1149 if (check_supported_cpu(i))
1152 supported_cpus++; 1150 supported_cpus++;
1153 } 1151 }
diff --git a/arch/i386/kernel/cpu/intel.c b/arch/i386/kernel/cpu/intel.c
index 8c0120186b9f..5386b29bb5a5 100644
--- a/arch/i386/kernel/cpu/intel.c
+++ b/arch/i386/kernel/cpu/intel.c
@@ -29,7 +29,7 @@ extern int trap_init_f00f_bug(void);
29struct movsl_mask movsl_mask __read_mostly; 29struct movsl_mask movsl_mask __read_mostly;
30#endif 30#endif
31 31
32void __devinit early_intel_workaround(struct cpuinfo_x86 *c) 32void __cpuinit early_intel_workaround(struct cpuinfo_x86 *c)
33{ 33{
34 if (c->x86_vendor != X86_VENDOR_INTEL) 34 if (c->x86_vendor != X86_VENDOR_INTEL)
35 return; 35 return;
@@ -44,7 +44,7 @@ void __devinit early_intel_workaround(struct cpuinfo_x86 *c)
44 * This is called before we do cpu ident work 44 * This is called before we do cpu ident work
45 */ 45 */
46 46
47int __devinit ppro_with_ram_bug(void) 47int __cpuinit ppro_with_ram_bug(void)
48{ 48{
49 /* Uses data from early_cpu_detect now */ 49 /* Uses data from early_cpu_detect now */
50 if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL && 50 if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL &&
@@ -62,7 +62,7 @@ int __devinit ppro_with_ram_bug(void)
62 * P4 Xeon errata 037 workaround. 62 * P4 Xeon errata 037 workaround.
63 * Hardware prefetcher may cause stale data to be loaded into the cache. 63 * Hardware prefetcher may cause stale data to be loaded into the cache.
64 */ 64 */
65static void __devinit Intel_errata_workarounds(struct cpuinfo_x86 *c) 65static void __cpuinit Intel_errata_workarounds(struct cpuinfo_x86 *c)
66{ 66{
67 unsigned long lo, hi; 67 unsigned long lo, hi;
68 68
@@ -81,7 +81,7 @@ static void __devinit Intel_errata_workarounds(struct cpuinfo_x86 *c)
81/* 81/*
82 * find out the number of processor cores on the die 82 * find out the number of processor cores on the die
83 */ 83 */
84static int __devinit num_cpu_cores(struct cpuinfo_x86 *c) 84static int __cpuinit num_cpu_cores(struct cpuinfo_x86 *c)
85{ 85{
86 unsigned int eax, ebx, ecx, edx; 86 unsigned int eax, ebx, ecx, edx;
87 87
@@ -96,7 +96,7 @@ static int __devinit num_cpu_cores(struct cpuinfo_x86 *c)
96 return 1; 96 return 1;
97} 97}
98 98
99static void __devinit init_intel(struct cpuinfo_x86 *c) 99static void __cpuinit init_intel(struct cpuinfo_x86 *c)
100{ 100{
101 unsigned int l2 = 0; 101 unsigned int l2 = 0;
102 char *p = NULL; 102 char *p = NULL;
@@ -205,7 +205,7 @@ static unsigned int intel_size_cache(struct cpuinfo_x86 * c, unsigned int size)
205 return size; 205 return size;
206} 206}
207 207
208static struct cpu_dev intel_cpu_dev __devinitdata = { 208static struct cpu_dev intel_cpu_dev __cpuinitdata = {
209 .c_vendor = "Intel", 209 .c_vendor = "Intel",
210 .c_ident = { "GenuineIntel" }, 210 .c_ident = { "GenuineIntel" },
211 .c_models = { 211 .c_models = {
diff --git a/arch/i386/kernel/cpu/intel_cacheinfo.c b/arch/i386/kernel/cpu/intel_cacheinfo.c
index ffe58cee0c48..ce61921369e5 100644
--- a/arch/i386/kernel/cpu/intel_cacheinfo.c
+++ b/arch/i386/kernel/cpu/intel_cacheinfo.c
@@ -174,7 +174,7 @@ unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
174 unsigned int new_l1d = 0, new_l1i = 0; /* Cache sizes from cpuid(4) */ 174 unsigned int new_l1d = 0, new_l1i = 0; /* Cache sizes from cpuid(4) */
175 unsigned int new_l2 = 0, new_l3 = 0, i; /* Cache sizes from cpuid(4) */ 175 unsigned int new_l2 = 0, new_l3 = 0, i; /* Cache sizes from cpuid(4) */
176 176
177 if (c->cpuid_level > 4) { 177 if (c->cpuid_level > 3) {
178 static int is_initialized; 178 static int is_initialized;
179 179
180 if (is_initialized == 0) { 180 if (is_initialized == 0) {
@@ -330,7 +330,7 @@ static void __cpuinit cache_shared_cpu_map_setup(unsigned int cpu, int index)
330 } 330 }
331 } 331 }
332} 332}
333static void __devinit cache_remove_shared_cpu_map(unsigned int cpu, int index) 333static void __cpuinit cache_remove_shared_cpu_map(unsigned int cpu, int index)
334{ 334{
335 struct _cpuid4_info *this_leaf, *sibling_leaf; 335 struct _cpuid4_info *this_leaf, *sibling_leaf;
336 int sibling; 336 int sibling;
diff --git a/arch/i386/kernel/cpu/proc.c b/arch/i386/kernel/cpu/proc.c
index 89a85af33d28..5cfbd8011698 100644
--- a/arch/i386/kernel/cpu/proc.c
+++ b/arch/i386/kernel/cpu/proc.c
@@ -40,7 +40,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
40 /* Other (Linux-defined) */ 40 /* Other (Linux-defined) */
41 "cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr", 41 "cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr",
42 NULL, NULL, NULL, NULL, 42 NULL, NULL, NULL, NULL,
43 "constant_tsc", NULL, NULL, NULL, NULL, NULL, NULL, NULL, 43 "constant_tsc", "up", NULL, NULL, NULL, NULL, NULL, NULL,
44 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 44 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
45 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 45 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
46 46
diff --git a/arch/i386/kernel/crash.c b/arch/i386/kernel/crash.c
index d49dbe8dc96b..e3c5fca0aa8a 100644
--- a/arch/i386/kernel/crash.c
+++ b/arch/i386/kernel/crash.c
@@ -105,7 +105,7 @@ static int crash_nmi_callback(struct pt_regs *regs, int cpu)
105 return 1; 105 return 1;
106 local_irq_disable(); 106 local_irq_disable();
107 107
108 if (!user_mode(regs)) { 108 if (!user_mode_vm(regs)) {
109 crash_fixup_ss_esp(&fixed_regs, regs); 109 crash_fixup_ss_esp(&fixed_regs, regs);
110 regs = &fixed_regs; 110 regs = &fixed_regs;
111 } 111 }
diff --git a/arch/i386/kernel/entry.S b/arch/i386/kernel/entry.S
index 4d704724b2f5..cfc683f153b9 100644
--- a/arch/i386/kernel/entry.S
+++ b/arch/i386/kernel/entry.S
@@ -226,6 +226,10 @@ ENTRY(system_call)
226 pushl %eax # save orig_eax 226 pushl %eax # save orig_eax
227 SAVE_ALL 227 SAVE_ALL
228 GET_THREAD_INFO(%ebp) 228 GET_THREAD_INFO(%ebp)
229 testl $TF_MASK,EFLAGS(%esp)
230 jz no_singlestep
231 orl $_TIF_SINGLESTEP,TI_flags(%ebp)
232no_singlestep:
229 # system call tracing in operation / emulation 233 # system call tracing in operation / emulation
230 /* Note, _TIF_SECCOMP is bit number 8, and so it needs testw and not testb */ 234 /* Note, _TIF_SECCOMP is bit number 8, and so it needs testw and not testb */
231 testw $(_TIF_SYSCALL_EMU|_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT),TI_flags(%ebp) 235 testw $(_TIF_SYSCALL_EMU|_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT),TI_flags(%ebp)
diff --git a/arch/i386/kernel/head.S b/arch/i386/kernel/head.S
index e0b7c632efbc..3debc2e26542 100644
--- a/arch/i386/kernel/head.S
+++ b/arch/i386/kernel/head.S
@@ -450,7 +450,6 @@ int_msg:
450 450
451.globl boot_gdt_descr 451.globl boot_gdt_descr
452.globl idt_descr 452.globl idt_descr
453.globl cpu_gdt_descr
454 453
455 ALIGN 454 ALIGN
456# early boot GDT descriptor (must use 1:1 address mapping) 455# early boot GDT descriptor (must use 1:1 address mapping)
@@ -470,8 +469,6 @@ cpu_gdt_descr:
470 .word GDT_ENTRIES*8-1 469 .word GDT_ENTRIES*8-1
471 .long cpu_gdt_table 470 .long cpu_gdt_table
472 471
473 .fill NR_CPUS-1,8,0 # space for the other GDT descriptors
474
475/* 472/*
476 * The boot_gdt_table must mirror the equivalent in setup.S and is 473 * The boot_gdt_table must mirror the equivalent in setup.S and is
477 * used only for booting. 474 * used only for booting.
@@ -485,7 +482,7 @@ ENTRY(boot_gdt_table)
485/* 482/*
486 * The Global Descriptor Table contains 28 quadwords, per-CPU. 483 * The Global Descriptor Table contains 28 quadwords, per-CPU.
487 */ 484 */
488 .align PAGE_SIZE_asm 485 .align L1_CACHE_BYTES
489ENTRY(cpu_gdt_table) 486ENTRY(cpu_gdt_table)
490 .quad 0x0000000000000000 /* NULL descriptor */ 487 .quad 0x0000000000000000 /* NULL descriptor */
491 .quad 0x0000000000000000 /* 0x0b reserved */ 488 .quad 0x0000000000000000 /* 0x0b reserved */
diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 39d9a5fa907e..311b4e7266f1 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -351,8 +351,8 @@ static inline void rotate_irqs_among_cpus(unsigned long useful_load_threshold)
351{ 351{
352 int i, j; 352 int i, j;
353 Dprintk("Rotating IRQs among CPUs.\n"); 353 Dprintk("Rotating IRQs among CPUs.\n");
354 for (i = 0; i < NR_CPUS; i++) { 354 for_each_online_cpu(i) {
355 for (j = 0; cpu_online(i) && (j < NR_IRQS); j++) { 355 for (j = 0; j < NR_IRQS; j++) {
356 if (!irq_desc[j].action) 356 if (!irq_desc[j].action)
357 continue; 357 continue;
358 /* Is it a significant load ? */ 358 /* Is it a significant load ? */
@@ -381,7 +381,7 @@ static void do_irq_balance(void)
381 unsigned long imbalance = 0; 381 unsigned long imbalance = 0;
382 cpumask_t allowed_mask, target_cpu_mask, tmp; 382 cpumask_t allowed_mask, target_cpu_mask, tmp;
383 383
384 for (i = 0; i < NR_CPUS; i++) { 384 for_each_cpu(i) {
385 int package_index; 385 int package_index;
386 CPU_IRQ(i) = 0; 386 CPU_IRQ(i) = 0;
387 if (!cpu_online(i)) 387 if (!cpu_online(i))
@@ -422,9 +422,7 @@ static void do_irq_balance(void)
422 } 422 }
423 } 423 }
424 /* Find the least loaded processor package */ 424 /* Find the least loaded processor package */
425 for (i = 0; i < NR_CPUS; i++) { 425 for_each_online_cpu(i) {
426 if (!cpu_online(i))
427 continue;
428 if (i != CPU_TO_PACKAGEINDEX(i)) 426 if (i != CPU_TO_PACKAGEINDEX(i))
429 continue; 427 continue;
430 if (min_cpu_irq > CPU_IRQ(i)) { 428 if (min_cpu_irq > CPU_IRQ(i)) {
@@ -441,9 +439,7 @@ tryanothercpu:
441 */ 439 */
442 tmp_cpu_irq = 0; 440 tmp_cpu_irq = 0;
443 tmp_loaded = -1; 441 tmp_loaded = -1;
444 for (i = 0; i < NR_CPUS; i++) { 442 for_each_online_cpu(i) {
445 if (!cpu_online(i))
446 continue;
447 if (i != CPU_TO_PACKAGEINDEX(i)) 443 if (i != CPU_TO_PACKAGEINDEX(i))
448 continue; 444 continue;
449 if (max_cpu_irq <= CPU_IRQ(i)) 445 if (max_cpu_irq <= CPU_IRQ(i))
@@ -619,9 +615,7 @@ static int __init balanced_irq_init(void)
619 if (smp_num_siblings > 1 && !cpus_empty(tmp)) 615 if (smp_num_siblings > 1 && !cpus_empty(tmp))
620 physical_balance = 1; 616 physical_balance = 1;
621 617
622 for (i = 0; i < NR_CPUS; i++) { 618 for_each_online_cpu(i) {
623 if (!cpu_online(i))
624 continue;
625 irq_cpu_data[i].irq_delta = kmalloc(sizeof(unsigned long) * NR_IRQS, GFP_KERNEL); 619 irq_cpu_data[i].irq_delta = kmalloc(sizeof(unsigned long) * NR_IRQS, GFP_KERNEL);
626 irq_cpu_data[i].last_irq = kmalloc(sizeof(unsigned long) * NR_IRQS, GFP_KERNEL); 620 irq_cpu_data[i].last_irq = kmalloc(sizeof(unsigned long) * NR_IRQS, GFP_KERNEL);
627 if (irq_cpu_data[i].irq_delta == NULL || irq_cpu_data[i].last_irq == NULL) { 621 if (irq_cpu_data[i].irq_delta == NULL || irq_cpu_data[i].last_irq == NULL) {
@@ -638,9 +632,11 @@ static int __init balanced_irq_init(void)
638 else 632 else
639 printk(KERN_ERR "balanced_irq_init: failed to spawn balanced_irq"); 633 printk(KERN_ERR "balanced_irq_init: failed to spawn balanced_irq");
640failed: 634failed:
641 for (i = 0; i < NR_CPUS; i++) { 635 for_each_cpu(i) {
642 kfree(irq_cpu_data[i].irq_delta); 636 kfree(irq_cpu_data[i].irq_delta);
637 irq_cpu_data[i].irq_delta = NULL;
643 kfree(irq_cpu_data[i].last_irq); 638 kfree(irq_cpu_data[i].last_irq);
639 irq_cpu_data[i].last_irq = NULL;
644 } 640 }
645 return 0; 641 return 0;
646} 642}
@@ -1761,7 +1757,8 @@ static void __init setup_ioapic_ids_from_mpc(void)
1761 * Don't check I/O APIC IDs for xAPIC systems. They have 1757 * Don't check I/O APIC IDs for xAPIC systems. They have
1762 * no meaning without the serial APIC bus. 1758 * no meaning without the serial APIC bus.
1763 */ 1759 */
1764 if (!(boot_cpu_data.x86_vendor == X86_VENDOR_INTEL && boot_cpu_data.x86 < 15)) 1760 if (!(boot_cpu_data.x86_vendor == X86_VENDOR_INTEL)
1761 || APIC_XAPIC(apic_version[boot_cpu_physical_apicid]))
1765 return; 1762 return;
1766 /* 1763 /*
1767 * This is broken; anything with a real cpu count has to 1764 * This is broken; anything with a real cpu count has to
diff --git a/arch/i386/kernel/kprobes.c b/arch/i386/kernel/kprobes.c
index 694a13997637..7a59050242a7 100644
--- a/arch/i386/kernel/kprobes.c
+++ b/arch/i386/kernel/kprobes.c
@@ -84,9 +84,9 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p)
84 84
85void __kprobes arch_remove_kprobe(struct kprobe *p) 85void __kprobes arch_remove_kprobe(struct kprobe *p)
86{ 86{
87 down(&kprobe_mutex); 87 mutex_lock(&kprobe_mutex);
88 free_insn_slot(p->ainsn.insn); 88 free_insn_slot(p->ainsn.insn);
89 up(&kprobe_mutex); 89 mutex_unlock(&kprobe_mutex);
90} 90}
91 91
92static inline void save_previous_kprobe(struct kprobe_ctlblk *kcb) 92static inline void save_previous_kprobe(struct kprobe_ctlblk *kcb)
diff --git a/arch/i386/kernel/module.c b/arch/i386/kernel/module.c
index 5149c8a621f0..470cf97e7cd3 100644
--- a/arch/i386/kernel/module.c
+++ b/arch/i386/kernel/module.c
@@ -104,26 +104,38 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
104 return -ENOEXEC; 104 return -ENOEXEC;
105} 105}
106 106
107extern void apply_alternatives(void *start, void *end);
108
109int module_finalize(const Elf_Ehdr *hdr, 107int module_finalize(const Elf_Ehdr *hdr,
110 const Elf_Shdr *sechdrs, 108 const Elf_Shdr *sechdrs,
111 struct module *me) 109 struct module *me)
112{ 110{
113 const Elf_Shdr *s; 111 const Elf_Shdr *s, *text = NULL, *alt = NULL, *locks = NULL;
114 char *secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; 112 char *secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
115 113
116 /* look for .altinstructions to patch */
117 for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) { 114 for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) {
118 void *seg; 115 if (!strcmp(".text", secstrings + s->sh_name))
119 if (strcmp(".altinstructions", secstrings + s->sh_name)) 116 text = s;
120 continue; 117 if (!strcmp(".altinstructions", secstrings + s->sh_name))
121 seg = (void *)s->sh_addr; 118 alt = s;
122 apply_alternatives(seg, seg + s->sh_size); 119 if (!strcmp(".smp_locks", secstrings + s->sh_name))
123 } 120 locks= s;
121 }
122
123 if (alt) {
124 /* patch .altinstructions */
125 void *aseg = (void *)alt->sh_addr;
126 apply_alternatives(aseg, aseg + alt->sh_size);
127 }
128 if (locks && text) {
129 void *lseg = (void *)locks->sh_addr;
130 void *tseg = (void *)text->sh_addr;
131 alternatives_smp_module_add(me, me->name,
132 lseg, lseg + locks->sh_size,
133 tseg, tseg + text->sh_size);
134 }
124 return 0; 135 return 0;
125} 136}
126 137
127void module_arch_cleanup(struct module *mod) 138void module_arch_cleanup(struct module *mod)
128{ 139{
140 alternatives_smp_module_del(mod);
129} 141}
diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c
index e6e2f43db85e..8d8aa9d1796d 100644
--- a/arch/i386/kernel/mpparse.c
+++ b/arch/i386/kernel/mpparse.c
@@ -828,6 +828,8 @@ void __init find_smp_config (void)
828 smp_scan_config(address, 0x400); 828 smp_scan_config(address, 0x400);
829} 829}
830 830
831int es7000_plat;
832
831/* -------------------------------------------------------------------------- 833/* --------------------------------------------------------------------------
832 ACPI-based MP Configuration 834 ACPI-based MP Configuration
833 -------------------------------------------------------------------------- */ 835 -------------------------------------------------------------------------- */
@@ -935,7 +937,8 @@ void __init mp_register_ioapic (
935 mp_ioapics[idx].mpc_apicaddr = address; 937 mp_ioapics[idx].mpc_apicaddr = address;
936 938
937 set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address); 939 set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address);
938 if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && (boot_cpu_data.x86 < 15)) 940 if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL)
941 && !APIC_XAPIC(apic_version[boot_cpu_physical_apicid]))
939 tmpid = io_apic_get_unique_id(idx, id); 942 tmpid = io_apic_get_unique_id(idx, id);
940 else 943 else
941 tmpid = id; 944 tmpid = id;
@@ -1011,8 +1014,6 @@ void __init mp_override_legacy_irq (
1011 return; 1014 return;
1012} 1015}
1013 1016
1014int es7000_plat;
1015
1016void __init mp_config_acpi_legacy_irqs (void) 1017void __init mp_config_acpi_legacy_irqs (void)
1017{ 1018{
1018 struct mpc_config_intsrc intsrc; 1019 struct mpc_config_intsrc intsrc;
diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c
index be87c5e2ee95..9074818b9473 100644
--- a/arch/i386/kernel/nmi.c
+++ b/arch/i386/kernel/nmi.c
@@ -143,7 +143,7 @@ static int __init check_nmi_watchdog(void)
143 local_irq_enable(); 143 local_irq_enable();
144 mdelay((10*1000)/nmi_hz); // wait 10 ticks 144 mdelay((10*1000)/nmi_hz); // wait 10 ticks
145 145
146 for (cpu = 0; cpu < NR_CPUS; cpu++) { 146 for_each_cpu(cpu) {
147#ifdef CONFIG_SMP 147#ifdef CONFIG_SMP
148 /* Check cpu_callin_map here because that is set 148 /* Check cpu_callin_map here because that is set
149 after the timer is started. */ 149 after the timer is started. */
@@ -510,7 +510,7 @@ void touch_nmi_watchdog (void)
510 * Just reset the alert counters, (other CPUs might be 510 * Just reset the alert counters, (other CPUs might be
511 * spinning on locks we hold): 511 * spinning on locks we hold):
512 */ 512 */
513 for (i = 0; i < NR_CPUS; i++) 513 for_each_cpu(i)
514 alert_counter[i] = 0; 514 alert_counter[i] = 0;
515 515
516 /* 516 /*
@@ -543,7 +543,7 @@ void nmi_watchdog_tick (struct pt_regs * regs)
543 /* 543 /*
544 * die_nmi will return ONLY if NOTIFY_STOP happens.. 544 * die_nmi will return ONLY if NOTIFY_STOP happens..
545 */ 545 */
546 die_nmi(regs, "NMI Watchdog detected LOCKUP"); 546 die_nmi(regs, "BUG: NMI Watchdog detected LOCKUP");
547 } else { 547 } else {
548 last_irq_sums[cpu] = sum; 548 last_irq_sums[cpu] = sum;
549 alert_counter[cpu] = 0; 549 alert_counter[cpu] = 0;
diff --git a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c
index 0480454ebffa..299e61674084 100644
--- a/arch/i386/kernel/process.c
+++ b/arch/i386/kernel/process.c
@@ -295,7 +295,7 @@ void show_regs(struct pt_regs * regs)
295 printk("EIP: %04x:[<%08lx>] CPU: %d\n",0xffff & regs->xcs,regs->eip, smp_processor_id()); 295 printk("EIP: %04x:[<%08lx>] CPU: %d\n",0xffff & regs->xcs,regs->eip, smp_processor_id());
296 print_symbol("EIP is at %s\n", regs->eip); 296 print_symbol("EIP is at %s\n", regs->eip);
297 297
298 if (user_mode(regs)) 298 if (user_mode_vm(regs))
299 printk(" ESP: %04x:%08lx",0xffff & regs->xss,regs->esp); 299 printk(" ESP: %04x:%08lx",0xffff & regs->xss,regs->esp);
300 printk(" EFLAGS: %08lx %s (%s %.*s)\n", 300 printk(" EFLAGS: %08lx %s (%s %.*s)\n",
301 regs->eflags, print_tainted(), system_utsname.release, 301 regs->eflags, print_tainted(), system_utsname.release,
diff --git a/arch/i386/kernel/ptrace.c b/arch/i386/kernel/ptrace.c
index 5c1fb6aada5b..506462ef36a0 100644
--- a/arch/i386/kernel/ptrace.c
+++ b/arch/i386/kernel/ptrace.c
@@ -34,10 +34,10 @@
34 34
35/* 35/*
36 * Determines which flags the user has access to [1 = access, 0 = no access]. 36 * Determines which flags the user has access to [1 = access, 0 = no access].
37 * Prohibits changing ID(21), VIP(20), VIF(19), VM(17), IOPL(12-13), IF(9). 37 * Prohibits changing ID(21), VIP(20), VIF(19), VM(17), NT(14), IOPL(12-13), IF(9).
38 * Also masks reserved bits (31-22, 15, 5, 3, 1). 38 * Also masks reserved bits (31-22, 15, 5, 3, 1).
39 */ 39 */
40#define FLAG_MASK 0x00054dd5 40#define FLAG_MASK 0x00050dd5
41 41
42/* set's the trap flag. */ 42/* set's the trap flag. */
43#define TRAP_FLAG 0x100 43#define TRAP_FLAG 0x100
diff --git a/arch/i386/kernel/semaphore.c b/arch/i386/kernel/semaphore.c
index 7455ab643943..967dc74df9ee 100644
--- a/arch/i386/kernel/semaphore.c
+++ b/arch/i386/kernel/semaphore.c
@@ -110,11 +110,11 @@ asm(
110".align 4\n" 110".align 4\n"
111".globl __write_lock_failed\n" 111".globl __write_lock_failed\n"
112"__write_lock_failed:\n\t" 112"__write_lock_failed:\n\t"
113 LOCK "addl $" RW_LOCK_BIAS_STR ",(%eax)\n" 113 LOCK_PREFIX "addl $" RW_LOCK_BIAS_STR ",(%eax)\n"
114"1: rep; nop\n\t" 114"1: rep; nop\n\t"
115 "cmpl $" RW_LOCK_BIAS_STR ",(%eax)\n\t" 115 "cmpl $" RW_LOCK_BIAS_STR ",(%eax)\n\t"
116 "jne 1b\n\t" 116 "jne 1b\n\t"
117 LOCK "subl $" RW_LOCK_BIAS_STR ",(%eax)\n\t" 117 LOCK_PREFIX "subl $" RW_LOCK_BIAS_STR ",(%eax)\n\t"
118 "jnz __write_lock_failed\n\t" 118 "jnz __write_lock_failed\n\t"
119 "ret" 119 "ret"
120); 120);
@@ -124,11 +124,11 @@ asm(
124".align 4\n" 124".align 4\n"
125".globl __read_lock_failed\n" 125".globl __read_lock_failed\n"
126"__read_lock_failed:\n\t" 126"__read_lock_failed:\n\t"
127 LOCK "incl (%eax)\n" 127 LOCK_PREFIX "incl (%eax)\n"
128"1: rep; nop\n\t" 128"1: rep; nop\n\t"
129 "cmpl $1,(%eax)\n\t" 129 "cmpl $1,(%eax)\n\t"
130 "js 1b\n\t" 130 "js 1b\n\t"
131 LOCK "decl (%eax)\n\t" 131 LOCK_PREFIX "decl (%eax)\n\t"
132 "js __read_lock_failed\n\t" 132 "js __read_lock_failed\n\t"
133 "ret" 133 "ret"
134); 134);
diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index ab62a9f4701e..2d8782960f41 100644
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -1377,101 +1377,6 @@ static void __init register_memory(void)
1377 pci_mem_start, gapstart, gapsize); 1377 pci_mem_start, gapstart, gapsize);
1378} 1378}
1379 1379
1380/* Use inline assembly to define this because the nops are defined
1381 as inline assembly strings in the include files and we cannot
1382 get them easily into strings. */
1383asm("\t.data\nintelnops: "
1384 GENERIC_NOP1 GENERIC_NOP2 GENERIC_NOP3 GENERIC_NOP4 GENERIC_NOP5 GENERIC_NOP6
1385 GENERIC_NOP7 GENERIC_NOP8);
1386asm("\t.data\nk8nops: "
1387 K8_NOP1 K8_NOP2 K8_NOP3 K8_NOP4 K8_NOP5 K8_NOP6
1388 K8_NOP7 K8_NOP8);
1389asm("\t.data\nk7nops: "
1390 K7_NOP1 K7_NOP2 K7_NOP3 K7_NOP4 K7_NOP5 K7_NOP6
1391 K7_NOP7 K7_NOP8);
1392
1393extern unsigned char intelnops[], k8nops[], k7nops[];
1394static unsigned char *intel_nops[ASM_NOP_MAX+1] = {
1395 NULL,
1396 intelnops,
1397 intelnops + 1,
1398 intelnops + 1 + 2,
1399 intelnops + 1 + 2 + 3,
1400 intelnops + 1 + 2 + 3 + 4,
1401 intelnops + 1 + 2 + 3 + 4 + 5,
1402 intelnops + 1 + 2 + 3 + 4 + 5 + 6,
1403 intelnops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
1404};
1405static unsigned char *k8_nops[ASM_NOP_MAX+1] = {
1406 NULL,
1407 k8nops,
1408 k8nops + 1,
1409 k8nops + 1 + 2,
1410 k8nops + 1 + 2 + 3,
1411 k8nops + 1 + 2 + 3 + 4,
1412 k8nops + 1 + 2 + 3 + 4 + 5,
1413 k8nops + 1 + 2 + 3 + 4 + 5 + 6,
1414 k8nops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
1415};
1416static unsigned char *k7_nops[ASM_NOP_MAX+1] = {
1417 NULL,
1418 k7nops,
1419 k7nops + 1,
1420 k7nops + 1 + 2,
1421 k7nops + 1 + 2 + 3,
1422 k7nops + 1 + 2 + 3 + 4,
1423 k7nops + 1 + 2 + 3 + 4 + 5,
1424 k7nops + 1 + 2 + 3 + 4 + 5 + 6,
1425 k7nops + 1 + 2 + 3 + 4 + 5 + 6 + 7,
1426};
1427static struct nop {
1428 int cpuid;
1429 unsigned char **noptable;
1430} noptypes[] = {
1431 { X86_FEATURE_K8, k8_nops },
1432 { X86_FEATURE_K7, k7_nops },
1433 { -1, NULL }
1434};
1435
1436/* Replace instructions with better alternatives for this CPU type.
1437
1438 This runs before SMP is initialized to avoid SMP problems with
1439 self modifying code. This implies that assymetric systems where
1440 APs have less capabilities than the boot processor are not handled.
1441 Tough. Make sure you disable such features by hand. */
1442void apply_alternatives(void *start, void *end)
1443{
1444 struct alt_instr *a;
1445 int diff, i, k;
1446 unsigned char **noptable = intel_nops;
1447 for (i = 0; noptypes[i].cpuid >= 0; i++) {
1448 if (boot_cpu_has(noptypes[i].cpuid)) {
1449 noptable = noptypes[i].noptable;
1450 break;
1451 }
1452 }
1453 for (a = start; (void *)a < end; a++) {
1454 if (!boot_cpu_has(a->cpuid))
1455 continue;
1456 BUG_ON(a->replacementlen > a->instrlen);
1457 memcpy(a->instr, a->replacement, a->replacementlen);
1458 diff = a->instrlen - a->replacementlen;
1459 /* Pad the rest with nops */
1460 for (i = a->replacementlen; diff > 0; diff -= k, i += k) {
1461 k = diff;
1462 if (k > ASM_NOP_MAX)
1463 k = ASM_NOP_MAX;
1464 memcpy(a->instr + i, noptable[k], k);
1465 }
1466 }
1467}
1468
1469void __init alternative_instructions(void)
1470{
1471 extern struct alt_instr __alt_instructions[], __alt_instructions_end[];
1472 apply_alternatives(__alt_instructions, __alt_instructions_end);
1473}
1474
1475static char * __init machine_specific_memory_setup(void); 1380static char * __init machine_specific_memory_setup(void);
1476 1381
1477#ifdef CONFIG_MCA 1382#ifdef CONFIG_MCA
@@ -1554,6 +1459,16 @@ void __init setup_arch(char **cmdline_p)
1554 1459
1555 parse_cmdline_early(cmdline_p); 1460 parse_cmdline_early(cmdline_p);
1556 1461
1462#ifdef CONFIG_EARLY_PRINTK
1463 {
1464 char *s = strstr(*cmdline_p, "earlyprintk=");
1465 if (s) {
1466 setup_early_printk(strchr(s, '=') + 1);
1467 printk("early console enabled\n");
1468 }
1469 }
1470#endif
1471
1557 max_low_pfn = setup_memory(); 1472 max_low_pfn = setup_memory();
1558 1473
1559 /* 1474 /*
@@ -1578,19 +1493,6 @@ void __init setup_arch(char **cmdline_p)
1578 * NOTE: at this point the bootmem allocator is fully available. 1493 * NOTE: at this point the bootmem allocator is fully available.
1579 */ 1494 */
1580 1495
1581#ifdef CONFIG_EARLY_PRINTK
1582 {
1583 char *s = strstr(*cmdline_p, "earlyprintk=");
1584 if (s) {
1585 extern void setup_early_printk(char *);
1586
1587 setup_early_printk(strchr(s, '=') + 1);
1588 printk("early console enabled\n");
1589 }
1590 }
1591#endif
1592
1593
1594 dmi_scan_machine(); 1496 dmi_scan_machine();
1595 1497
1596#ifdef CONFIG_X86_GENERICARCH 1498#ifdef CONFIG_X86_GENERICARCH
diff --git a/arch/i386/kernel/signal.c b/arch/i386/kernel/signal.c
index 963616d364ec..5c352c3a9e7f 100644
--- a/arch/i386/kernel/signal.c
+++ b/arch/i386/kernel/signal.c
@@ -123,7 +123,8 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *peax
123 err |= __get_user(tmp, &sc->seg); \ 123 err |= __get_user(tmp, &sc->seg); \
124 loadsegment(seg,tmp); } 124 loadsegment(seg,tmp); }
125 125
126#define FIX_EFLAGS (X86_EFLAGS_AC | X86_EFLAGS_OF | X86_EFLAGS_DF | \ 126#define FIX_EFLAGS (X86_EFLAGS_AC | X86_EFLAGS_RF | \
127 X86_EFLAGS_OF | X86_EFLAGS_DF | \
127 X86_EFLAGS_TF | X86_EFLAGS_SF | X86_EFLAGS_ZF | \ 128 X86_EFLAGS_TF | X86_EFLAGS_SF | X86_EFLAGS_ZF | \
128 X86_EFLAGS_AF | X86_EFLAGS_PF | X86_EFLAGS_CF) 129 X86_EFLAGS_AF | X86_EFLAGS_PF | X86_EFLAGS_CF)
129 130
@@ -582,9 +583,6 @@ static void fastcall do_signal(struct pt_regs *regs)
582 if (!user_mode(regs)) 583 if (!user_mode(regs))
583 return; 584 return;
584 585
585 if (try_to_freeze())
586 goto no_signal;
587
588 if (test_thread_flag(TIF_RESTORE_SIGMASK)) 586 if (test_thread_flag(TIF_RESTORE_SIGMASK))
589 oldset = &current->saved_sigmask; 587 oldset = &current->saved_sigmask;
590 else 588 else
@@ -613,7 +611,6 @@ static void fastcall do_signal(struct pt_regs *regs)
613 return; 611 return;
614 } 612 }
615 613
616no_signal:
617 /* Did we come from a system call? */ 614 /* Did we come from a system call? */
618 if (regs->orig_eax >= 0) { 615 if (regs->orig_eax >= 0) {
619 /* Restart the system call - no handlers present */ 616 /* Restart the system call - no handlers present */
diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c
index 7007e1783797..4c470e99a742 100644
--- a/arch/i386/kernel/smpboot.c
+++ b/arch/i386/kernel/smpboot.c
@@ -899,6 +899,7 @@ static int __devinit do_boot_cpu(int apicid, int cpu)
899 unsigned short nmi_high = 0, nmi_low = 0; 899 unsigned short nmi_high = 0, nmi_low = 0;
900 900
901 ++cpucount; 901 ++cpucount;
902 alternatives_smp_switch(1);
902 903
903 /* 904 /*
904 * We can't use kernel_thread since we must avoid to 905 * We can't use kernel_thread since we must avoid to
@@ -1368,6 +1369,8 @@ void __cpu_die(unsigned int cpu)
1368 /* They ack this in play_dead by setting CPU_DEAD */ 1369 /* They ack this in play_dead by setting CPU_DEAD */
1369 if (per_cpu(cpu_state, cpu) == CPU_DEAD) { 1370 if (per_cpu(cpu_state, cpu) == CPU_DEAD) {
1370 printk ("CPU %d is now offline\n", cpu); 1371 printk ("CPU %d is now offline\n", cpu);
1372 if (1 == num_online_cpus())
1373 alternatives_smp_switch(0);
1371 return; 1374 return;
1372 } 1375 }
1373 msleep(100); 1376 msleep(100);
diff --git a/arch/i386/kernel/topology.c b/arch/i386/kernel/topology.c
index 67a0e1baa28b..296355292c7c 100644
--- a/arch/i386/kernel/topology.c
+++ b/arch/i386/kernel/topology.c
@@ -41,6 +41,15 @@ int arch_register_cpu(int num){
41 parent = &node_devices[node].node; 41 parent = &node_devices[node].node;
42#endif /* CONFIG_NUMA */ 42#endif /* CONFIG_NUMA */
43 43
44 /*
45 * CPU0 cannot be offlined due to several
46 * restrictions and assumptions in kernel. This basically
47 * doesnt add a control file, one cannot attempt to offline
48 * BSP.
49 */
50 if (!num)
51 cpu_devices[num].cpu.no_control = 1;
52
44 return register_cpu(&cpu_devices[num].cpu, num, parent); 53 return register_cpu(&cpu_devices[num].cpu, num, parent);
45} 54}
46 55
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c
index b814dbdcc91e..de5386b01d38 100644
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c
@@ -99,6 +99,8 @@ int register_die_notifier(struct notifier_block *nb)
99{ 99{
100 int err = 0; 100 int err = 0;
101 unsigned long flags; 101 unsigned long flags;
102
103 vmalloc_sync_all();
102 spin_lock_irqsave(&die_notifier_lock, flags); 104 spin_lock_irqsave(&die_notifier_lock, flags);
103 err = notifier_chain_register(&i386die_chain, nb); 105 err = notifier_chain_register(&i386die_chain, nb);
104 spin_unlock_irqrestore(&die_notifier_lock, flags); 106 spin_unlock_irqrestore(&die_notifier_lock, flags);
@@ -112,12 +114,30 @@ static inline int valid_stack_ptr(struct thread_info *tinfo, void *p)
112 p < (void *)tinfo + THREAD_SIZE - 3; 114 p < (void *)tinfo + THREAD_SIZE - 3;
113} 115}
114 116
115static void print_addr_and_symbol(unsigned long addr, char *log_lvl) 117/*
118 * Print CONFIG_STACK_BACKTRACE_COLS address/symbol entries per line.
119 */
120static inline int print_addr_and_symbol(unsigned long addr, char *log_lvl,
121 int printed)
116{ 122{
117 printk(log_lvl); 123 if (!printed)
124 printk(log_lvl);
125
126#if CONFIG_STACK_BACKTRACE_COLS == 1
118 printk(" [<%08lx>] ", addr); 127 printk(" [<%08lx>] ", addr);
128#else
129 printk(" <%08lx> ", addr);
130#endif
119 print_symbol("%s", addr); 131 print_symbol("%s", addr);
120 printk("\n"); 132
133 printed = (printed + 1) % CONFIG_STACK_BACKTRACE_COLS;
134
135 if (printed)
136 printk(" ");
137 else
138 printk("\n");
139
140 return printed;
121} 141}
122 142
123static inline unsigned long print_context_stack(struct thread_info *tinfo, 143static inline unsigned long print_context_stack(struct thread_info *tinfo,
@@ -125,20 +145,24 @@ static inline unsigned long print_context_stack(struct thread_info *tinfo,
125 char *log_lvl) 145 char *log_lvl)
126{ 146{
127 unsigned long addr; 147 unsigned long addr;
148 int printed = 0; /* nr of entries already printed on current line */
128 149
129#ifdef CONFIG_FRAME_POINTER 150#ifdef CONFIG_FRAME_POINTER
130 while (valid_stack_ptr(tinfo, (void *)ebp)) { 151 while (valid_stack_ptr(tinfo, (void *)ebp)) {
131 addr = *(unsigned long *)(ebp + 4); 152 addr = *(unsigned long *)(ebp + 4);
132 print_addr_and_symbol(addr, log_lvl); 153 printed = print_addr_and_symbol(addr, log_lvl, printed);
133 ebp = *(unsigned long *)ebp; 154 ebp = *(unsigned long *)ebp;
134 } 155 }
135#else 156#else
136 while (valid_stack_ptr(tinfo, stack)) { 157 while (valid_stack_ptr(tinfo, stack)) {
137 addr = *stack++; 158 addr = *stack++;
138 if (__kernel_text_address(addr)) 159 if (__kernel_text_address(addr))
139 print_addr_and_symbol(addr, log_lvl); 160 printed = print_addr_and_symbol(addr, log_lvl, printed);
140 } 161 }
141#endif 162#endif
163 if (printed)
164 printk("\n");
165
142 return ebp; 166 return ebp;
143} 167}
144 168
@@ -166,8 +190,7 @@ static void show_trace_log_lvl(struct task_struct *task,
166 stack = (unsigned long*)context->previous_esp; 190 stack = (unsigned long*)context->previous_esp;
167 if (!stack) 191 if (!stack)
168 break; 192 break;
169 printk(log_lvl); 193 printk("%s =======================\n", log_lvl);
170 printk(" =======================\n");
171 } 194 }
172} 195}
173 196
@@ -194,21 +217,17 @@ static void show_stack_log_lvl(struct task_struct *task, unsigned long *esp,
194 for(i = 0; i < kstack_depth_to_print; i++) { 217 for(i = 0; i < kstack_depth_to_print; i++) {
195 if (kstack_end(stack)) 218 if (kstack_end(stack))
196 break; 219 break;
197 if (i && ((i % 8) == 0)) { 220 if (i && ((i % 8) == 0))
198 printk("\n"); 221 printk("\n%s ", log_lvl);
199 printk(log_lvl);
200 printk(" ");
201 }
202 printk("%08lx ", *stack++); 222 printk("%08lx ", *stack++);
203 } 223 }
204 printk("\n"); 224 printk("\n%sCall Trace:\n", log_lvl);
205 printk(log_lvl);
206 printk("Call Trace:\n");
207 show_trace_log_lvl(task, esp, log_lvl); 225 show_trace_log_lvl(task, esp, log_lvl);
208} 226}
209 227
210void show_stack(struct task_struct *task, unsigned long *esp) 228void show_stack(struct task_struct *task, unsigned long *esp)
211{ 229{
230 printk(" ");
212 show_stack_log_lvl(task, esp, ""); 231 show_stack_log_lvl(task, esp, "");
213} 232}
214 233
@@ -233,7 +252,7 @@ void show_registers(struct pt_regs *regs)
233 252
234 esp = (unsigned long) (&regs->esp); 253 esp = (unsigned long) (&regs->esp);
235 savesegment(ss, ss); 254 savesegment(ss, ss);
236 if (user_mode(regs)) { 255 if (user_mode_vm(regs)) {
237 in_kernel = 0; 256 in_kernel = 0;
238 esp = regs->esp; 257 esp = regs->esp;
239 ss = regs->xss & 0xffff; 258 ss = regs->xss & 0xffff;
@@ -333,6 +352,8 @@ void die(const char * str, struct pt_regs * regs, long err)
333 static int die_counter; 352 static int die_counter;
334 unsigned long flags; 353 unsigned long flags;
335 354
355 oops_enter();
356
336 if (die.lock_owner != raw_smp_processor_id()) { 357 if (die.lock_owner != raw_smp_processor_id()) {
337 console_verbose(); 358 console_verbose();
338 spin_lock_irqsave(&die.lock, flags); 359 spin_lock_irqsave(&die.lock, flags);
@@ -385,6 +406,7 @@ void die(const char * str, struct pt_regs * regs, long err)
385 ssleep(5); 406 ssleep(5);
386 panic("Fatal exception"); 407 panic("Fatal exception");
387 } 408 }
409 oops_exit();
388 do_exit(SIGSEGV); 410 do_exit(SIGSEGV);
389} 411}
390 412
@@ -623,7 +645,7 @@ void die_nmi (struct pt_regs *regs, const char *msg)
623 /* If we are in kernel we are probably nested up pretty bad 645 /* If we are in kernel we are probably nested up pretty bad
624 * and might aswell get out now while we still can. 646 * and might aswell get out now while we still can.
625 */ 647 */
626 if (!user_mode(regs)) { 648 if (!user_mode_vm(regs)) {
627 current->thread.trap_no = 2; 649 current->thread.trap_no = 2;
628 crash_kexec(regs); 650 crash_kexec(regs);
629 } 651 }
@@ -694,6 +716,7 @@ fastcall void do_nmi(struct pt_regs * regs, long error_code)
694 716
695void set_nmi_callback(nmi_callback_t callback) 717void set_nmi_callback(nmi_callback_t callback)
696{ 718{
719 vmalloc_sync_all();
697 rcu_assign_pointer(nmi_callback, callback); 720 rcu_assign_pointer(nmi_callback, callback);
698} 721}
699EXPORT_SYMBOL_GPL(set_nmi_callback); 722EXPORT_SYMBOL_GPL(set_nmi_callback);
diff --git a/arch/i386/kernel/vmlinux.lds.S b/arch/i386/kernel/vmlinux.lds.S
index 4710195b6b74..3f21c6f6466d 100644
--- a/arch/i386/kernel/vmlinux.lds.S
+++ b/arch/i386/kernel/vmlinux.lds.S
@@ -68,6 +68,26 @@ SECTIONS
68 *(.data.init_task) 68 *(.data.init_task)
69 } 69 }
70 70
71 /* might get freed after init */
72 . = ALIGN(4096);
73 __smp_alt_begin = .;
74 __smp_alt_instructions = .;
75 .smp_altinstructions : AT(ADDR(.smp_altinstructions) - LOAD_OFFSET) {
76 *(.smp_altinstructions)
77 }
78 __smp_alt_instructions_end = .;
79 . = ALIGN(4);
80 __smp_locks = .;
81 .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
82 *(.smp_locks)
83 }
84 __smp_locks_end = .;
85 .smp_altinstr_replacement : AT(ADDR(.smp_altinstr_replacement) - LOAD_OFFSET) {
86 *(.smp_altinstr_replacement)
87 }
88 . = ALIGN(4096);
89 __smp_alt_end = .;
90
71 /* will be freed after init */ 91 /* will be freed after init */
72 . = ALIGN(4096); /* Init code and data */ 92 . = ALIGN(4096); /* Init code and data */
73 __init_begin = .; 93 __init_begin = .;
diff --git a/arch/i386/kernel/vsyscall-sysenter.S b/arch/i386/kernel/vsyscall-sysenter.S
index 76b728159403..3b62baa6a371 100644
--- a/arch/i386/kernel/vsyscall-sysenter.S
+++ b/arch/i386/kernel/vsyscall-sysenter.S
@@ -21,6 +21,9 @@
21 * instruction clobbers %esp, the user's %esp won't even survive entry 21 * instruction clobbers %esp, the user's %esp won't even survive entry
22 * into the kernel. We store %esp in %ebp. Code in entry.S must fetch 22 * into the kernel. We store %esp in %ebp. Code in entry.S must fetch
23 * arg6 from the stack. 23 * arg6 from the stack.
24 *
25 * You can not use this vsyscall for the clone() syscall because the
26 * three dwords on the parent stack do not get copied to the child.
24 */ 27 */
25 .text 28 .text
26 .globl __kernel_vsyscall 29 .globl __kernel_vsyscall
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-04 02:28:33 -0400