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Commit | Line | Data |
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f87e4cac JF |
1 | /* |
2 | * Xen SMP support | |
3 | * | |
4 | * This file implements the Xen versions of smp_ops. SMP under Xen is | |
5 | * very straightforward. Bringing a CPU up is simply a matter of | |
6 | * loading its initial context and setting it running. | |
7 | * | |
8 | * IPIs are handled through the Xen event mechanism. | |
9 | * | |
10 | * Because virtual CPUs can be scheduled onto any real CPU, there's no | |
11 | * useful topology information for the kernel to make use of. As a | |
12 | * result, all CPUs are treated as if they're single-core and | |
13 | * single-threaded. | |
f87e4cac JF |
14 | */ |
15 | #include <linux/sched.h> | |
16 | #include <linux/err.h> | |
5a0e3ad6 | 17 | #include <linux/slab.h> |
f87e4cac JF |
18 | #include <linux/smp.h> |
19 | ||
20 | #include <asm/paravirt.h> | |
21 | #include <asm/desc.h> | |
22 | #include <asm/pgtable.h> | |
23 | #include <asm/cpu.h> | |
24 | ||
25 | #include <xen/interface/xen.h> | |
26 | #include <xen/interface/vcpu.h> | |
27 | ||
28 | #include <asm/xen/interface.h> | |
29 | #include <asm/xen/hypercall.h> | |
30 | ||
ea5b8f73 | 31 | #include <xen/xen.h> |
f87e4cac JF |
32 | #include <xen/page.h> |
33 | #include <xen/events.h> | |
34 | ||
35 | #include "xen-ops.h" | |
36 | #include "mmu.h" | |
37 | ||
b78936e1 | 38 | cpumask_var_t xen_cpu_initialized_map; |
f87e4cac | 39 | |
c6e22f9e TH |
40 | static DEFINE_PER_CPU(int, xen_resched_irq); |
41 | static DEFINE_PER_CPU(int, xen_callfunc_irq); | |
42 | static DEFINE_PER_CPU(int, xen_callfuncsingle_irq); | |
43 | static DEFINE_PER_CPU(int, xen_debug_irq) = -1; | |
f87e4cac JF |
44 | |
45 | static irqreturn_t xen_call_function_interrupt(int irq, void *dev_id); | |
3b16cf87 | 46 | static irqreturn_t xen_call_function_single_interrupt(int irq, void *dev_id); |
f87e4cac JF |
47 | |
48 | /* | |
49 | * Reschedule call back. Nothing to do, | |
50 | * all the work is done automatically when | |
51 | * we return from the interrupt. | |
52 | */ | |
53 | static irqreturn_t xen_reschedule_interrupt(int irq, void *dev_id) | |
54 | { | |
1b437c8c | 55 | inc_irq_stat(irq_resched_count); |
38bb5ab4 | 56 | |
f87e4cac JF |
57 | return IRQ_HANDLED; |
58 | } | |
59 | ||
d68d82af | 60 | static __cpuinit void cpu_bringup(void) |
f87e4cac JF |
61 | { |
62 | int cpu = smp_processor_id(); | |
63 | ||
64 | cpu_init(); | |
d68d82af | 65 | touch_softlockup_watchdog(); |
c7b75947 JF |
66 | preempt_disable(); |
67 | ||
e2a81baf | 68 | xen_enable_sysenter(); |
6fcac6d3 | 69 | xen_enable_syscall(); |
f87e4cac | 70 | |
c7b75947 JF |
71 | cpu = smp_processor_id(); |
72 | smp_store_cpu_info(cpu); | |
73 | cpu_data(cpu).x86_max_cores = 1; | |
74 | set_cpu_sibling_map(cpu); | |
f87e4cac JF |
75 | |
76 | xen_setup_cpu_clockevents(); | |
77 | ||
d7d3756c | 78 | set_cpu_online(cpu, true); |
6dbde353 | 79 | percpu_write(cpu_state, CPU_ONLINE); |
c7b75947 JF |
80 | wmb(); |
81 | ||
f87e4cac JF |
82 | /* We can take interrupts now: we're officially "up". */ |
83 | local_irq_enable(); | |
84 | ||
85 | wmb(); /* make sure everything is out */ | |
d68d82af AN |
86 | } |
87 | ||
88 | static __cpuinit void cpu_bringup_and_idle(void) | |
89 | { | |
90 | cpu_bringup(); | |
f87e4cac JF |
91 | cpu_idle(); |
92 | } | |
93 | ||
94 | static int xen_smp_intr_init(unsigned int cpu) | |
95 | { | |
96 | int rc; | |
ee523ca1 | 97 | const char *resched_name, *callfunc_name, *debug_name; |
f87e4cac JF |
98 | |
99 | resched_name = kasprintf(GFP_KERNEL, "resched%d", cpu); | |
100 | rc = bind_ipi_to_irqhandler(XEN_RESCHEDULE_VECTOR, | |
101 | cpu, | |
102 | xen_reschedule_interrupt, | |
103 | IRQF_DISABLED|IRQF_PERCPU|IRQF_NOBALANCING, | |
104 | resched_name, | |
105 | NULL); | |
106 | if (rc < 0) | |
107 | goto fail; | |
c6e22f9e | 108 | per_cpu(xen_resched_irq, cpu) = rc; |
f87e4cac JF |
109 | |
110 | callfunc_name = kasprintf(GFP_KERNEL, "callfunc%d", cpu); | |
111 | rc = bind_ipi_to_irqhandler(XEN_CALL_FUNCTION_VECTOR, | |
112 | cpu, | |
113 | xen_call_function_interrupt, | |
114 | IRQF_DISABLED|IRQF_PERCPU|IRQF_NOBALANCING, | |
115 | callfunc_name, | |
116 | NULL); | |
117 | if (rc < 0) | |
118 | goto fail; | |
c6e22f9e | 119 | per_cpu(xen_callfunc_irq, cpu) = rc; |
f87e4cac | 120 | |
ee523ca1 JF |
121 | debug_name = kasprintf(GFP_KERNEL, "debug%d", cpu); |
122 | rc = bind_virq_to_irqhandler(VIRQ_DEBUG, cpu, xen_debug_interrupt, | |
123 | IRQF_DISABLED | IRQF_PERCPU | IRQF_NOBALANCING, | |
124 | debug_name, NULL); | |
125 | if (rc < 0) | |
126 | goto fail; | |
c6e22f9e | 127 | per_cpu(xen_debug_irq, cpu) = rc; |
ee523ca1 | 128 | |
3b16cf87 JA |
129 | callfunc_name = kasprintf(GFP_KERNEL, "callfuncsingle%d", cpu); |
130 | rc = bind_ipi_to_irqhandler(XEN_CALL_FUNCTION_SINGLE_VECTOR, | |
131 | cpu, | |
132 | xen_call_function_single_interrupt, | |
133 | IRQF_DISABLED|IRQF_PERCPU|IRQF_NOBALANCING, | |
134 | callfunc_name, | |
135 | NULL); | |
136 | if (rc < 0) | |
137 | goto fail; | |
c6e22f9e | 138 | per_cpu(xen_callfuncsingle_irq, cpu) = rc; |
3b16cf87 | 139 | |
f87e4cac JF |
140 | return 0; |
141 | ||
142 | fail: | |
c6e22f9e TH |
143 | if (per_cpu(xen_resched_irq, cpu) >= 0) |
144 | unbind_from_irqhandler(per_cpu(xen_resched_irq, cpu), NULL); | |
145 | if (per_cpu(xen_callfunc_irq, cpu) >= 0) | |
146 | unbind_from_irqhandler(per_cpu(xen_callfunc_irq, cpu), NULL); | |
147 | if (per_cpu(xen_debug_irq, cpu) >= 0) | |
148 | unbind_from_irqhandler(per_cpu(xen_debug_irq, cpu), NULL); | |
149 | if (per_cpu(xen_callfuncsingle_irq, cpu) >= 0) | |
150 | unbind_from_irqhandler(per_cpu(xen_callfuncsingle_irq, cpu), | |
151 | NULL); | |
3b16cf87 | 152 | |
f87e4cac JF |
153 | return rc; |
154 | } | |
155 | ||
c7b75947 | 156 | static void __init xen_fill_possible_map(void) |
f87e4cac JF |
157 | { |
158 | int i, rc; | |
159 | ||
ea5b8f73 SS |
160 | if (xen_initial_domain()) |
161 | return; | |
162 | ||
163 | for (i = 0; i < nr_cpu_ids; i++) { | |
164 | rc = HYPERVISOR_vcpu_op(VCPUOP_is_up, i, NULL); | |
165 | if (rc >= 0) { | |
166 | num_processors++; | |
167 | set_cpu_possible(i, true); | |
168 | } | |
169 | } | |
170 | } | |
171 | ||
172 | static void __init xen_filter_cpu_maps(void) | |
173 | { | |
174 | int i, rc; | |
175 | ||
176 | if (!xen_initial_domain()) | |
177 | return; | |
178 | ||
801fd14a SS |
179 | num_processors = 0; |
180 | disabled_cpus = 0; | |
e7986739 | 181 | for (i = 0; i < nr_cpu_ids; i++) { |
f87e4cac | 182 | rc = HYPERVISOR_vcpu_op(VCPUOP_is_up, i, NULL); |
4560a294 JF |
183 | if (rc >= 0) { |
184 | num_processors++; | |
4f062896 | 185 | set_cpu_possible(i, true); |
801fd14a SS |
186 | } else { |
187 | set_cpu_possible(i, false); | |
188 | set_cpu_present(i, false); | |
4560a294 | 189 | } |
f87e4cac JF |
190 | } |
191 | } | |
192 | ||
a9e7062d | 193 | static void __init xen_smp_prepare_boot_cpu(void) |
f87e4cac | 194 | { |
f87e4cac JF |
195 | BUG_ON(smp_processor_id() != 0); |
196 | native_smp_prepare_boot_cpu(); | |
197 | ||
f87e4cac JF |
198 | /* We've switched to the "real" per-cpu gdt, so make sure the |
199 | old memory can be recycled */ | |
38341432 | 200 | make_lowmem_page_readwrite(xen_initial_gdt); |
60223a32 | 201 | |
ea5b8f73 | 202 | xen_filter_cpu_maps(); |
60223a32 | 203 | xen_setup_vcpu_info_placement(); |
f87e4cac JF |
204 | } |
205 | ||
a9e7062d | 206 | static void __init xen_smp_prepare_cpus(unsigned int max_cpus) |
f87e4cac JF |
207 | { |
208 | unsigned cpu; | |
209 | ||
2d9e1e2f JF |
210 | xen_init_lock_cpu(0); |
211 | ||
f87e4cac | 212 | smp_store_cpu_info(0); |
c7b75947 | 213 | cpu_data(0).x86_max_cores = 1; |
f87e4cac JF |
214 | set_cpu_sibling_map(0); |
215 | ||
216 | if (xen_smp_intr_init(0)) | |
217 | BUG(); | |
218 | ||
b78936e1 MT |
219 | if (!alloc_cpumask_var(&xen_cpu_initialized_map, GFP_KERNEL)) |
220 | panic("could not allocate xen_cpu_initialized_map\n"); | |
221 | ||
222 | cpumask_copy(xen_cpu_initialized_map, cpumask_of(0)); | |
f87e4cac JF |
223 | |
224 | /* Restrict the possible_map according to max_cpus. */ | |
225 | while ((num_possible_cpus() > 1) && (num_possible_cpus() > max_cpus)) { | |
e7986739 | 226 | for (cpu = nr_cpu_ids - 1; !cpu_possible(cpu); cpu--) |
f87e4cac | 227 | continue; |
4f062896 | 228 | set_cpu_possible(cpu, false); |
f87e4cac JF |
229 | } |
230 | ||
231 | for_each_possible_cpu (cpu) { | |
232 | struct task_struct *idle; | |
233 | ||
234 | if (cpu == 0) | |
235 | continue; | |
236 | ||
237 | idle = fork_idle(cpu); | |
238 | if (IS_ERR(idle)) | |
239 | panic("failed fork for CPU %d", cpu); | |
240 | ||
4f062896 | 241 | set_cpu_present(cpu, true); |
f87e4cac | 242 | } |
f87e4cac JF |
243 | } |
244 | ||
245 | static __cpuinit int | |
246 | cpu_initialize_context(unsigned int cpu, struct task_struct *idle) | |
247 | { | |
248 | struct vcpu_guest_context *ctxt; | |
c7b75947 | 249 | struct desc_struct *gdt; |
9976b39b | 250 | unsigned long gdt_mfn; |
f87e4cac | 251 | |
b78936e1 | 252 | if (cpumask_test_and_set_cpu(cpu, xen_cpu_initialized_map)) |
f87e4cac JF |
253 | return 0; |
254 | ||
255 | ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL); | |
256 | if (ctxt == NULL) | |
257 | return -ENOMEM; | |
258 | ||
c7b75947 JF |
259 | gdt = get_cpu_gdt_table(cpu); |
260 | ||
f87e4cac JF |
261 | ctxt->flags = VGCF_IN_KERNEL; |
262 | ctxt->user_regs.ds = __USER_DS; | |
263 | ctxt->user_regs.es = __USER_DS; | |
f87e4cac | 264 | ctxt->user_regs.ss = __KERNEL_DS; |
c7b75947 JF |
265 | #ifdef CONFIG_X86_32 |
266 | ctxt->user_regs.fs = __KERNEL_PERCPU; | |
577eebea | 267 | ctxt->user_regs.gs = __KERNEL_STACK_CANARY; |
795f99b6 JF |
268 | #else |
269 | ctxt->gs_base_kernel = per_cpu_offset(cpu); | |
c7b75947 | 270 | #endif |
f87e4cac JF |
271 | ctxt->user_regs.eip = (unsigned long)cpu_bringup_and_idle; |
272 | ctxt->user_regs.eflags = 0x1000; /* IOPL_RING1 */ | |
273 | ||
274 | memset(&ctxt->fpu_ctxt, 0, sizeof(ctxt->fpu_ctxt)); | |
275 | ||
276 | xen_copy_trap_info(ctxt->trap_ctxt); | |
277 | ||
278 | ctxt->ldt_ents = 0; | |
279 | ||
c7b75947 | 280 | BUG_ON((unsigned long)gdt & ~PAGE_MASK); |
9976b39b JF |
281 | |
282 | gdt_mfn = arbitrary_virt_to_mfn(gdt); | |
c7b75947 | 283 | make_lowmem_page_readonly(gdt); |
9976b39b | 284 | make_lowmem_page_readonly(mfn_to_virt(gdt_mfn)); |
f87e4cac | 285 | |
9976b39b | 286 | ctxt->gdt_frames[0] = gdt_mfn; |
c7b75947 | 287 | ctxt->gdt_ents = GDT_ENTRIES; |
f87e4cac JF |
288 | |
289 | ctxt->user_regs.cs = __KERNEL_CS; | |
faca6227 | 290 | ctxt->user_regs.esp = idle->thread.sp0 - sizeof(struct pt_regs); |
f87e4cac JF |
291 | |
292 | ctxt->kernel_ss = __KERNEL_DS; | |
faca6227 | 293 | ctxt->kernel_sp = idle->thread.sp0; |
f87e4cac | 294 | |
c7b75947 | 295 | #ifdef CONFIG_X86_32 |
f87e4cac | 296 | ctxt->event_callback_cs = __KERNEL_CS; |
f87e4cac | 297 | ctxt->failsafe_callback_cs = __KERNEL_CS; |
c7b75947 JF |
298 | #endif |
299 | ctxt->event_callback_eip = (unsigned long)xen_hypervisor_callback; | |
f87e4cac JF |
300 | ctxt->failsafe_callback_eip = (unsigned long)xen_failsafe_callback; |
301 | ||
302 | per_cpu(xen_cr3, cpu) = __pa(swapper_pg_dir); | |
303 | ctxt->ctrlreg[3] = xen_pfn_to_cr3(virt_to_mfn(swapper_pg_dir)); | |
304 | ||
305 | if (HYPERVISOR_vcpu_op(VCPUOP_initialise, cpu, ctxt)) | |
306 | BUG(); | |
307 | ||
308 | kfree(ctxt); | |
309 | return 0; | |
310 | } | |
311 | ||
a9e7062d | 312 | static int __cpuinit xen_cpu_up(unsigned int cpu) |
f87e4cac JF |
313 | { |
314 | struct task_struct *idle = idle_task(cpu); | |
315 | int rc; | |
316 | ||
c6f5e0ac | 317 | per_cpu(current_task, cpu) = idle; |
c7b75947 | 318 | #ifdef CONFIG_X86_32 |
f87e4cac | 319 | irq_ctx_init(cpu); |
c7b75947 | 320 | #else |
c7b75947 | 321 | clear_tsk_thread_flag(idle, TIF_FORK); |
38341432 JF |
322 | per_cpu(kernel_stack, cpu) = |
323 | (unsigned long)task_stack_page(idle) - | |
324 | KERNEL_STACK_OFFSET + THREAD_SIZE; | |
c7b75947 | 325 | #endif |
02889672 | 326 | xen_setup_runstate_info(cpu); |
f87e4cac | 327 | xen_setup_timer(cpu); |
2d9e1e2f | 328 | xen_init_lock_cpu(cpu); |
f87e4cac | 329 | |
c7b75947 JF |
330 | per_cpu(cpu_state, cpu) = CPU_UP_PREPARE; |
331 | ||
f87e4cac JF |
332 | /* make sure interrupts start blocked */ |
333 | per_cpu(xen_vcpu, cpu)->evtchn_upcall_mask = 1; | |
334 | ||
335 | rc = cpu_initialize_context(cpu, idle); | |
336 | if (rc) | |
337 | return rc; | |
338 | ||
339 | if (num_online_cpus() == 1) | |
340 | alternatives_smp_switch(1); | |
341 | ||
342 | rc = xen_smp_intr_init(cpu); | |
343 | if (rc) | |
344 | return rc; | |
345 | ||
f87e4cac JF |
346 | rc = HYPERVISOR_vcpu_op(VCPUOP_up, cpu, NULL); |
347 | BUG_ON(rc); | |
348 | ||
c7b75947 | 349 | while(per_cpu(cpu_state, cpu) != CPU_ONLINE) { |
1207cf8e | 350 | HYPERVISOR_sched_op(SCHEDOP_yield, NULL); |
c7b75947 JF |
351 | barrier(); |
352 | } | |
353 | ||
f87e4cac JF |
354 | return 0; |
355 | } | |
356 | ||
a9e7062d | 357 | static void xen_smp_cpus_done(unsigned int max_cpus) |
f87e4cac JF |
358 | { |
359 | } | |
360 | ||
2737146b | 361 | #ifdef CONFIG_HOTPLUG_CPU |
26fd1051 | 362 | static int xen_cpu_disable(void) |
d68d82af AN |
363 | { |
364 | unsigned int cpu = smp_processor_id(); | |
365 | if (cpu == 0) | |
366 | return -EBUSY; | |
367 | ||
368 | cpu_disable_common(); | |
369 | ||
370 | load_cr3(swapper_pg_dir); | |
371 | return 0; | |
372 | } | |
373 | ||
26fd1051 | 374 | static void xen_cpu_die(unsigned int cpu) |
d68d82af AN |
375 | { |
376 | while (HYPERVISOR_vcpu_op(VCPUOP_is_up, cpu, NULL)) { | |
377 | current->state = TASK_UNINTERRUPTIBLE; | |
378 | schedule_timeout(HZ/10); | |
379 | } | |
c6e22f9e TH |
380 | unbind_from_irqhandler(per_cpu(xen_resched_irq, cpu), NULL); |
381 | unbind_from_irqhandler(per_cpu(xen_callfunc_irq, cpu), NULL); | |
382 | unbind_from_irqhandler(per_cpu(xen_debug_irq, cpu), NULL); | |
383 | unbind_from_irqhandler(per_cpu(xen_callfuncsingle_irq, cpu), NULL); | |
d68d82af AN |
384 | xen_uninit_lock_cpu(cpu); |
385 | xen_teardown_timer(cpu); | |
386 | ||
387 | if (num_online_cpus() == 1) | |
388 | alternatives_smp_switch(0); | |
389 | } | |
390 | ||
71709247 | 391 | static void __cpuinit xen_play_dead(void) /* used only with HOTPLUG_CPU */ |
d68d82af AN |
392 | { |
393 | play_dead_common(); | |
394 | HYPERVISOR_vcpu_op(VCPUOP_down, smp_processor_id(), NULL); | |
395 | cpu_bringup(); | |
396 | } | |
397 | ||
2737146b | 398 | #else /* !CONFIG_HOTPLUG_CPU */ |
26fd1051 | 399 | static int xen_cpu_disable(void) |
2737146b AN |
400 | { |
401 | return -ENOSYS; | |
402 | } | |
403 | ||
26fd1051 | 404 | static void xen_cpu_die(unsigned int cpu) |
2737146b AN |
405 | { |
406 | BUG(); | |
407 | } | |
408 | ||
26fd1051 | 409 | static void xen_play_dead(void) |
2737146b AN |
410 | { |
411 | BUG(); | |
412 | } | |
413 | ||
414 | #endif | |
f87e4cac JF |
415 | static void stop_self(void *v) |
416 | { | |
417 | int cpu = smp_processor_id(); | |
418 | ||
419 | /* make sure we're not pinning something down */ | |
420 | load_cr3(swapper_pg_dir); | |
421 | /* should set up a minimal gdt */ | |
422 | ||
086748e5 IC |
423 | set_cpu_online(cpu, false); |
424 | ||
f87e4cac JF |
425 | HYPERVISOR_vcpu_op(VCPUOP_down, cpu, NULL); |
426 | BUG(); | |
427 | } | |
428 | ||
76fac077 | 429 | static void xen_stop_other_cpus(int wait) |
f87e4cac | 430 | { |
76fac077 | 431 | smp_call_function(stop_self, NULL, wait); |
f87e4cac JF |
432 | } |
433 | ||
a9e7062d | 434 | static void xen_smp_send_reschedule(int cpu) |
f87e4cac JF |
435 | { |
436 | xen_send_IPI_one(cpu, XEN_RESCHEDULE_VECTOR); | |
437 | } | |
438 | ||
bcda016e MT |
439 | static void xen_send_IPI_mask(const struct cpumask *mask, |
440 | enum ipi_vector vector) | |
f87e4cac JF |
441 | { |
442 | unsigned cpu; | |
443 | ||
bcda016e | 444 | for_each_cpu_and(cpu, mask, cpu_online_mask) |
f87e4cac JF |
445 | xen_send_IPI_one(cpu, vector); |
446 | } | |
447 | ||
bcda016e | 448 | static void xen_smp_send_call_function_ipi(const struct cpumask *mask) |
3b16cf87 JA |
449 | { |
450 | int cpu; | |
451 | ||
452 | xen_send_IPI_mask(mask, XEN_CALL_FUNCTION_VECTOR); | |
453 | ||
454 | /* Make sure other vcpus get a chance to run if they need to. */ | |
bcda016e | 455 | for_each_cpu(cpu, mask) { |
3b16cf87 | 456 | if (xen_vcpu_stolen(cpu)) { |
1207cf8e | 457 | HYPERVISOR_sched_op(SCHEDOP_yield, NULL); |
3b16cf87 JA |
458 | break; |
459 | } | |
460 | } | |
461 | } | |
462 | ||
a9e7062d | 463 | static void xen_smp_send_call_function_single_ipi(int cpu) |
3b16cf87 | 464 | { |
bcda016e | 465 | xen_send_IPI_mask(cpumask_of(cpu), |
e7986739 | 466 | XEN_CALL_FUNCTION_SINGLE_VECTOR); |
3b16cf87 JA |
467 | } |
468 | ||
f87e4cac JF |
469 | static irqreturn_t xen_call_function_interrupt(int irq, void *dev_id) |
470 | { | |
f87e4cac | 471 | irq_enter(); |
3b16cf87 | 472 | generic_smp_call_function_interrupt(); |
1b437c8c | 473 | inc_irq_stat(irq_call_count); |
f87e4cac JF |
474 | irq_exit(); |
475 | ||
f87e4cac JF |
476 | return IRQ_HANDLED; |
477 | } | |
478 | ||
3b16cf87 | 479 | static irqreturn_t xen_call_function_single_interrupt(int irq, void *dev_id) |
f87e4cac | 480 | { |
3b16cf87 JA |
481 | irq_enter(); |
482 | generic_smp_call_function_single_interrupt(); | |
1b437c8c | 483 | inc_irq_stat(irq_call_count); |
3b16cf87 | 484 | irq_exit(); |
f87e4cac | 485 | |
3b16cf87 | 486 | return IRQ_HANDLED; |
f87e4cac | 487 | } |
a9e7062d JF |
488 | |
489 | static const struct smp_ops xen_smp_ops __initdata = { | |
490 | .smp_prepare_boot_cpu = xen_smp_prepare_boot_cpu, | |
491 | .smp_prepare_cpus = xen_smp_prepare_cpus, | |
a9e7062d JF |
492 | .smp_cpus_done = xen_smp_cpus_done, |
493 | ||
d68d82af AN |
494 | .cpu_up = xen_cpu_up, |
495 | .cpu_die = xen_cpu_die, | |
496 | .cpu_disable = xen_cpu_disable, | |
497 | .play_dead = xen_play_dead, | |
498 | ||
76fac077 | 499 | .stop_other_cpus = xen_stop_other_cpus, |
a9e7062d JF |
500 | .smp_send_reschedule = xen_smp_send_reschedule, |
501 | ||
502 | .send_call_func_ipi = xen_smp_send_call_function_ipi, | |
503 | .send_call_func_single_ipi = xen_smp_send_call_function_single_ipi, | |
504 | }; | |
505 | ||
506 | void __init xen_smp_init(void) | |
507 | { | |
508 | smp_ops = xen_smp_ops; | |
c7b75947 | 509 | xen_fill_possible_map(); |
2d9e1e2f | 510 | xen_init_spinlocks(); |
a9e7062d | 511 | } |