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15#include <linux/sched.h>
16#include <linux/err.h>
17#include <linux/slab.h>
18#include <linux/smp.h>
19#include <linux/irq_work.h>
20#include <linux/tick.h>
21
22#include <asm/paravirt.h>
23#include <asm/desc.h>
24#include <asm/pgtable.h>
25#include <asm/cpu.h>
26
27#include <xen/interface/xen.h>
28#include <xen/interface/vcpu.h>
29#include <xen/interface/xenpmu.h>
30
31#include <asm/xen/interface.h>
32#include <asm/xen/hypercall.h>
33
34#include <xen/xen.h>
35#include <xen/page.h>
36#include <xen/events.h>
37
38#include <xen/hvc-console.h>
39#include "xen-ops.h"
40#include "mmu.h"
41#include "smp.h"
42#include "pmu.h"
43
44cpumask_var_t xen_cpu_initialized_map;
45
46struct xen_common_irq {
47 int irq;
48 char *name;
49};
50static DEFINE_PER_CPU(struct xen_common_irq, xen_resched_irq) = { .irq = -1 };
51static DEFINE_PER_CPU(struct xen_common_irq, xen_callfunc_irq) = { .irq = -1 };
52static DEFINE_PER_CPU(struct xen_common_irq, xen_callfuncsingle_irq) = { .irq = -1 };
53static DEFINE_PER_CPU(struct xen_common_irq, xen_irq_work) = { .irq = -1 };
54static DEFINE_PER_CPU(struct xen_common_irq, xen_debug_irq) = { .irq = -1 };
55static DEFINE_PER_CPU(struct xen_common_irq, xen_pmu_irq) = { .irq = -1 };
56
57static irqreturn_t xen_call_function_interrupt(int irq, void *dev_id);
58static irqreturn_t xen_call_function_single_interrupt(int irq, void *dev_id);
59static irqreturn_t xen_irq_work_interrupt(int irq, void *dev_id);
60
61
62
63
64static irqreturn_t xen_reschedule_interrupt(int irq, void *dev_id)
65{
66 inc_irq_stat(irq_resched_count);
67 scheduler_ipi();
68
69 return IRQ_HANDLED;
70}
71
72static void cpu_bringup(void)
73{
74 int cpu;
75
76 cpu_init();
77 touch_softlockup_watchdog();
78 preempt_disable();
79
80
81 if (!xen_feature(XENFEAT_supervisor_mode_kernel)) {
82 xen_enable_sysenter();
83 xen_enable_syscall();
84 }
85 cpu = smp_processor_id();
86 smp_store_cpu_info(cpu);
87 cpu_data(cpu).x86_max_cores = 1;
88 set_cpu_sibling_map(cpu);
89
90
91
92
93
94 topology_update_package_map(apic->cpu_present_to_apicid(cpu), cpu);
95
96 xen_setup_cpu_clockevents();
97
98 notify_cpu_starting(cpu);
99
100 set_cpu_online(cpu, true);
101
102 cpu_set_state_online(cpu);
103
104
105 local_irq_enable();
106}
107
108
109
110
111
112
113asmlinkage __visible void cpu_bringup_and_idle(int cpu)
114{
115#ifdef CONFIG_XEN_PVH
116 if (xen_feature(XENFEAT_auto_translated_physmap) &&
117 xen_feature(XENFEAT_supervisor_mode_kernel))
118 xen_pvh_secondary_vcpu_init(cpu);
119#endif
120 cpu_bringup();
121 cpu_startup_entry(CPUHP_AP_ONLINE_IDLE);
122}
123
124void xen_smp_intr_free(unsigned int cpu)
125{
126 if (per_cpu(xen_resched_irq, cpu).irq >= 0) {
127 unbind_from_irqhandler(per_cpu(xen_resched_irq, cpu).irq, NULL);
128 per_cpu(xen_resched_irq, cpu).irq = -1;
129 kfree(per_cpu(xen_resched_irq, cpu).name);
130 per_cpu(xen_resched_irq, cpu).name = NULL;
131 }
132 if (per_cpu(xen_callfunc_irq, cpu).irq >= 0) {
133 unbind_from_irqhandler(per_cpu(xen_callfunc_irq, cpu).irq, NULL);
134 per_cpu(xen_callfunc_irq, cpu).irq = -1;
135 kfree(per_cpu(xen_callfunc_irq, cpu).name);
136 per_cpu(xen_callfunc_irq, cpu).name = NULL;
137 }
138 if (per_cpu(xen_debug_irq, cpu).irq >= 0) {
139 unbind_from_irqhandler(per_cpu(xen_debug_irq, cpu).irq, NULL);
140 per_cpu(xen_debug_irq, cpu).irq = -1;
141 kfree(per_cpu(xen_debug_irq, cpu).name);
142 per_cpu(xen_debug_irq, cpu).name = NULL;
143 }
144 if (per_cpu(xen_callfuncsingle_irq, cpu).irq >= 0) {
145 unbind_from_irqhandler(per_cpu(xen_callfuncsingle_irq, cpu).irq,
146 NULL);
147 per_cpu(xen_callfuncsingle_irq, cpu).irq = -1;
148 kfree(per_cpu(xen_callfuncsingle_irq, cpu).name);
149 per_cpu(xen_callfuncsingle_irq, cpu).name = NULL;
150 }
151 if (xen_hvm_domain())
152 return;
153
154 if (per_cpu(xen_irq_work, cpu).irq >= 0) {
155 unbind_from_irqhandler(per_cpu(xen_irq_work, cpu).irq, NULL);
156 per_cpu(xen_irq_work, cpu).irq = -1;
157 kfree(per_cpu(xen_irq_work, cpu).name);
158 per_cpu(xen_irq_work, cpu).name = NULL;
159 }
160
161 if (per_cpu(xen_pmu_irq, cpu).irq >= 0) {
162 unbind_from_irqhandler(per_cpu(xen_pmu_irq, cpu).irq, NULL);
163 per_cpu(xen_pmu_irq, cpu).irq = -1;
164 kfree(per_cpu(xen_pmu_irq, cpu).name);
165 per_cpu(xen_pmu_irq, cpu).name = NULL;
166 }
167};
168int xen_smp_intr_init(unsigned int cpu)
169{
170 int rc;
171 char *resched_name, *callfunc_name, *debug_name, *pmu_name;
172
173 resched_name = kasprintf(GFP_KERNEL, "resched%d", cpu);
174 rc = bind_ipi_to_irqhandler(XEN_RESCHEDULE_VECTOR,
175 cpu,
176 xen_reschedule_interrupt,
177 IRQF_PERCPU|IRQF_NOBALANCING,
178 resched_name,
179 NULL);
180 if (rc < 0)
181 goto fail;
182 per_cpu(xen_resched_irq, cpu).irq = rc;
183 per_cpu(xen_resched_irq, cpu).name = resched_name;
184
185 callfunc_name = kasprintf(GFP_KERNEL, "callfunc%d", cpu);
186 rc = bind_ipi_to_irqhandler(XEN_CALL_FUNCTION_VECTOR,
187 cpu,
188 xen_call_function_interrupt,
189 IRQF_PERCPU|IRQF_NOBALANCING,
190 callfunc_name,
191 NULL);
192 if (rc < 0)
193 goto fail;
194 per_cpu(xen_callfunc_irq, cpu).irq = rc;
195 per_cpu(xen_callfunc_irq, cpu).name = callfunc_name;
196
197 debug_name = kasprintf(GFP_KERNEL, "debug%d", cpu);
198 rc = bind_virq_to_irqhandler(VIRQ_DEBUG, cpu, xen_debug_interrupt,
199 IRQF_PERCPU | IRQF_NOBALANCING,
200 debug_name, NULL);
201 if (rc < 0)
202 goto fail;
203 per_cpu(xen_debug_irq, cpu).irq = rc;
204 per_cpu(xen_debug_irq, cpu).name = debug_name;
205
206 callfunc_name = kasprintf(GFP_KERNEL, "callfuncsingle%d", cpu);
207 rc = bind_ipi_to_irqhandler(XEN_CALL_FUNCTION_SINGLE_VECTOR,
208 cpu,
209 xen_call_function_single_interrupt,
210 IRQF_PERCPU|IRQF_NOBALANCING,
211 callfunc_name,
212 NULL);
213 if (rc < 0)
214 goto fail;
215 per_cpu(xen_callfuncsingle_irq, cpu).irq = rc;
216 per_cpu(xen_callfuncsingle_irq, cpu).name = callfunc_name;
217
218
219
220
221
222 if (xen_hvm_domain())
223 return 0;
224
225 callfunc_name = kasprintf(GFP_KERNEL, "irqwork%d", cpu);
226 rc = bind_ipi_to_irqhandler(XEN_IRQ_WORK_VECTOR,
227 cpu,
228 xen_irq_work_interrupt,
229 IRQF_PERCPU|IRQF_NOBALANCING,
230 callfunc_name,
231 NULL);
232 if (rc < 0)
233 goto fail;
234 per_cpu(xen_irq_work, cpu).irq = rc;
235 per_cpu(xen_irq_work, cpu).name = callfunc_name;
236
237 if (is_xen_pmu(cpu)) {
238 pmu_name = kasprintf(GFP_KERNEL, "pmu%d", cpu);
239 rc = bind_virq_to_irqhandler(VIRQ_XENPMU, cpu,
240 xen_pmu_irq_handler,
241 IRQF_PERCPU|IRQF_NOBALANCING,
242 pmu_name, NULL);
243 if (rc < 0)
244 goto fail;
245 per_cpu(xen_pmu_irq, cpu).irq = rc;
246 per_cpu(xen_pmu_irq, cpu).name = pmu_name;
247 }
248
249 return 0;
250
251 fail:
252 xen_smp_intr_free(cpu);
253 return rc;
254}
255
256static void __init xen_fill_possible_map(void)
257{
258 int i, rc;
259
260 if (xen_initial_domain())
261 return;
262
263 for (i = 0; i < nr_cpu_ids; i++) {
264 rc = HYPERVISOR_vcpu_op(VCPUOP_is_up, i, NULL);
265 if (rc >= 0) {
266 num_processors++;
267 set_cpu_possible(i, true);
268 }
269 }
270}
271
272static void __init xen_filter_cpu_maps(void)
273{
274 int i, rc;
275 unsigned int subtract = 0;
276
277 if (!xen_initial_domain())
278 return;
279
280 num_processors = 0;
281 disabled_cpus = 0;
282 for (i = 0; i < nr_cpu_ids; i++) {
283 rc = HYPERVISOR_vcpu_op(VCPUOP_is_up, i, NULL);
284 if (rc >= 0) {
285 num_processors++;
286 set_cpu_possible(i, true);
287 } else {
288 set_cpu_possible(i, false);
289 set_cpu_present(i, false);
290 subtract++;
291 }
292 }
293#ifdef CONFIG_HOTPLUG_CPU
294
295
296
297
298
299
300
301
302 if (subtract)
303 nr_cpu_ids = nr_cpu_ids - subtract;
304#endif
305
306}
307
308static void __init xen_smp_prepare_boot_cpu(void)
309{
310 BUG_ON(smp_processor_id() != 0);
311 native_smp_prepare_boot_cpu();
312
313 if (xen_pv_domain()) {
314 if (!xen_feature(XENFEAT_writable_page_tables))
315
316
317 make_lowmem_page_readwrite(xen_initial_gdt);
318
319#ifdef CONFIG_X86_32
320
321
322
323
324 loadsegment(ds, __USER_DS);
325 loadsegment(es, __USER_DS);
326#endif
327
328 xen_filter_cpu_maps();
329 xen_setup_vcpu_info_placement();
330 }
331
332
333
334
335 if (xen_hvm_domain())
336 xen_vcpu_setup(0);
337
338
339
340
341
342
343
344 xen_init_spinlocks();
345}
346
347static void __init xen_smp_prepare_cpus(unsigned int max_cpus)
348{
349 unsigned cpu;
350 unsigned int i;
351
352 if (skip_ioapic_setup) {
353 char *m = (max_cpus == 0) ?
354 "The nosmp parameter is incompatible with Xen; " \
355 "use Xen dom0_max_vcpus=1 parameter" :
356 "The noapic parameter is incompatible with Xen";
357
358 xen_raw_printk(m);
359 panic(m);
360 }
361 xen_init_lock_cpu(0);
362
363 smp_store_boot_cpu_info();
364 cpu_data(0).x86_max_cores = 1;
365
366 for_each_possible_cpu(i) {
367 zalloc_cpumask_var(&per_cpu(cpu_sibling_map, i), GFP_KERNEL);
368 zalloc_cpumask_var(&per_cpu(cpu_core_map, i), GFP_KERNEL);
369 zalloc_cpumask_var(&per_cpu(cpu_llc_shared_map, i), GFP_KERNEL);
370 }
371 set_cpu_sibling_map(0);
372
373 xen_pmu_init(0);
374
375 if (xen_smp_intr_init(0))
376 BUG();
377
378 if (!alloc_cpumask_var(&xen_cpu_initialized_map, GFP_KERNEL))
379 panic("could not allocate xen_cpu_initialized_map\n");
380
381 cpumask_copy(xen_cpu_initialized_map, cpumask_of(0));
382
383
384 while ((num_possible_cpus() > 1) && (num_possible_cpus() > max_cpus)) {
385 for (cpu = nr_cpu_ids - 1; !cpu_possible(cpu); cpu--)
386 continue;
387 set_cpu_possible(cpu, false);
388 }
389
390 for_each_possible_cpu(cpu)
391 set_cpu_present(cpu, true);
392}
393
394static int
395cpu_initialize_context(unsigned int cpu, struct task_struct *idle)
396{
397 struct vcpu_guest_context *ctxt;
398 struct desc_struct *gdt;
399 unsigned long gdt_mfn;
400
401
402 cpumask_set_cpu(cpu, cpu_callout_mask);
403 if (cpumask_test_and_set_cpu(cpu, xen_cpu_initialized_map))
404 return 0;
405
406 ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
407 if (ctxt == NULL)
408 return -ENOMEM;
409
410 gdt = get_cpu_gdt_table(cpu);
411
412#ifdef CONFIG_X86_32
413
414 ctxt->user_regs.fs = __KERNEL_PERCPU;
415 ctxt->user_regs.gs = __KERNEL_STACK_CANARY;
416#endif
417 memset(&ctxt->fpu_ctxt, 0, sizeof(ctxt->fpu_ctxt));
418
419 if (!xen_feature(XENFEAT_auto_translated_physmap)) {
420 ctxt->user_regs.eip = (unsigned long)cpu_bringup_and_idle;
421 ctxt->flags = VGCF_IN_KERNEL;
422 ctxt->user_regs.eflags = 0x1000;
423 ctxt->user_regs.ds = __USER_DS;
424 ctxt->user_regs.es = __USER_DS;
425 ctxt->user_regs.ss = __KERNEL_DS;
426
427 xen_copy_trap_info(ctxt->trap_ctxt);
428
429 ctxt->ldt_ents = 0;
430
431 BUG_ON((unsigned long)gdt & ~PAGE_MASK);
432
433 gdt_mfn = arbitrary_virt_to_mfn(gdt);
434 make_lowmem_page_readonly(gdt);
435 make_lowmem_page_readonly(mfn_to_virt(gdt_mfn));
436
437 ctxt->gdt_frames[0] = gdt_mfn;
438 ctxt->gdt_ents = GDT_ENTRIES;
439
440 ctxt->kernel_ss = __KERNEL_DS;
441 ctxt->kernel_sp = idle->thread.sp0;
442
443#ifdef CONFIG_X86_32
444 ctxt->event_callback_cs = __KERNEL_CS;
445 ctxt->failsafe_callback_cs = __KERNEL_CS;
446#else
447 ctxt->gs_base_kernel = per_cpu_offset(cpu);
448#endif
449 ctxt->event_callback_eip =
450 (unsigned long)xen_hypervisor_callback;
451 ctxt->failsafe_callback_eip =
452 (unsigned long)xen_failsafe_callback;
453 ctxt->user_regs.cs = __KERNEL_CS;
454 per_cpu(xen_cr3, cpu) = __pa(swapper_pg_dir);
455 }
456#ifdef CONFIG_XEN_PVH
457 else {
458
459
460
461
462
463 ctxt->user_regs.eip = (unsigned long)xen_pvh_early_cpu_init;
464 ctxt->user_regs.rdi = cpu;
465 ctxt->user_regs.rsi = true;
466 }
467#endif
468 ctxt->user_regs.esp = idle->thread.sp0 - sizeof(struct pt_regs);
469 ctxt->ctrlreg[3] = xen_pfn_to_cr3(virt_to_gfn(swapper_pg_dir));
470 if (HYPERVISOR_vcpu_op(VCPUOP_initialise, xen_vcpu_nr(cpu), ctxt))
471 BUG();
472
473 kfree(ctxt);
474 return 0;
475}
476
477static int xen_cpu_up(unsigned int cpu, struct task_struct *idle)
478{
479 int rc;
480
481 common_cpu_up(cpu, idle);
482
483 xen_setup_runstate_info(cpu);
484
485
486
487
488
489 rc = cpu_check_up_prepare(cpu);
490 if (rc)
491 return rc;
492
493
494 per_cpu(xen_vcpu, cpu)->evtchn_upcall_mask = 1;
495
496 rc = cpu_initialize_context(cpu, idle);
497 if (rc)
498 return rc;
499
500 xen_pmu_init(cpu);
501
502 rc = HYPERVISOR_vcpu_op(VCPUOP_up, xen_vcpu_nr(cpu), NULL);
503 BUG_ON(rc);
504
505 while (cpu_report_state(cpu) != CPU_ONLINE)
506 HYPERVISOR_sched_op(SCHEDOP_yield, NULL);
507
508 return 0;
509}
510
511static void xen_smp_cpus_done(unsigned int max_cpus)
512{
513}
514
515#ifdef CONFIG_HOTPLUG_CPU
516static int xen_cpu_disable(void)
517{
518 unsigned int cpu = smp_processor_id();
519 if (cpu == 0)
520 return -EBUSY;
521
522 cpu_disable_common();
523
524 load_cr3(swapper_pg_dir);
525 return 0;
526}
527
528static void xen_cpu_die(unsigned int cpu)
529{
530 while (xen_pv_domain() && HYPERVISOR_vcpu_op(VCPUOP_is_up,
531 xen_vcpu_nr(cpu), NULL)) {
532 __set_current_state(TASK_UNINTERRUPTIBLE);
533 schedule_timeout(HZ/10);
534 }
535
536 if (common_cpu_die(cpu) == 0) {
537 xen_smp_intr_free(cpu);
538 xen_uninit_lock_cpu(cpu);
539 xen_teardown_timer(cpu);
540 xen_pmu_finish(cpu);
541 }
542}
543
544static void xen_play_dead(void)
545{
546 play_dead_common();
547 HYPERVISOR_vcpu_op(VCPUOP_down, xen_vcpu_nr(smp_processor_id()), NULL);
548 cpu_bringup();
549
550
551
552
553
554
555 tick_nohz_idle_enter();
556
557 cpu_startup_entry(CPUHP_AP_ONLINE_IDLE);
558}
559
560#else
561static int xen_cpu_disable(void)
562{
563 return -ENOSYS;
564}
565
566static void xen_cpu_die(unsigned int cpu)
567{
568 BUG();
569}
570
571static void xen_play_dead(void)
572{
573 BUG();
574}
575
576#endif
577static void stop_self(void *v)
578{
579 int cpu = smp_processor_id();
580
581
582 load_cr3(swapper_pg_dir);
583
584
585 set_cpu_online(cpu, false);
586
587 HYPERVISOR_vcpu_op(VCPUOP_down, xen_vcpu_nr(cpu), NULL);
588 BUG();
589}
590
591static void xen_stop_other_cpus(int wait)
592{
593 smp_call_function(stop_self, NULL, wait);
594}
595
596static void xen_smp_send_reschedule(int cpu)
597{
598 xen_send_IPI_one(cpu, XEN_RESCHEDULE_VECTOR);
599}
600
601static void __xen_send_IPI_mask(const struct cpumask *mask,
602 int vector)
603{
604 unsigned cpu;
605
606 for_each_cpu_and(cpu, mask, cpu_online_mask)
607 xen_send_IPI_one(cpu, vector);
608}
609
610static void xen_smp_send_call_function_ipi(const struct cpumask *mask)
611{
612 int cpu;
613
614 __xen_send_IPI_mask(mask, XEN_CALL_FUNCTION_VECTOR);
615
616
617 for_each_cpu(cpu, mask) {
618 if (xen_vcpu_stolen(cpu)) {
619 HYPERVISOR_sched_op(SCHEDOP_yield, NULL);
620 break;
621 }
622 }
623}
624
625static void xen_smp_send_call_function_single_ipi(int cpu)
626{
627 __xen_send_IPI_mask(cpumask_of(cpu),
628 XEN_CALL_FUNCTION_SINGLE_VECTOR);
629}
630
631static inline int xen_map_vector(int vector)
632{
633 int xen_vector;
634
635 switch (vector) {
636 case RESCHEDULE_VECTOR:
637 xen_vector = XEN_RESCHEDULE_VECTOR;
638 break;
639 case CALL_FUNCTION_VECTOR:
640 xen_vector = XEN_CALL_FUNCTION_VECTOR;
641 break;
642 case CALL_FUNCTION_SINGLE_VECTOR:
643 xen_vector = XEN_CALL_FUNCTION_SINGLE_VECTOR;
644 break;
645 case IRQ_WORK_VECTOR:
646 xen_vector = XEN_IRQ_WORK_VECTOR;
647 break;
648#ifdef CONFIG_X86_64
649 case NMI_VECTOR:
650 case APIC_DM_NMI:
651 xen_vector = XEN_NMI_VECTOR;
652 break;
653#endif
654 default:
655 xen_vector = -1;
656 printk(KERN_ERR "xen: vector 0x%x is not implemented\n",
657 vector);
658 }
659
660 return xen_vector;
661}
662
663void xen_send_IPI_mask(const struct cpumask *mask,
664 int vector)
665{
666 int xen_vector = xen_map_vector(vector);
667
668 if (xen_vector >= 0)
669 __xen_send_IPI_mask(mask, xen_vector);
670}
671
672void xen_send_IPI_all(int vector)
673{
674 int xen_vector = xen_map_vector(vector);
675
676 if (xen_vector >= 0)
677 __xen_send_IPI_mask(cpu_online_mask, xen_vector);
678}
679
680void xen_send_IPI_self(int vector)
681{
682 int xen_vector = xen_map_vector(vector);
683
684 if (xen_vector >= 0)
685 xen_send_IPI_one(smp_processor_id(), xen_vector);
686}
687
688void xen_send_IPI_mask_allbutself(const struct cpumask *mask,
689 int vector)
690{
691 unsigned cpu;
692 unsigned int this_cpu = smp_processor_id();
693 int xen_vector = xen_map_vector(vector);
694
695 if (!(num_online_cpus() > 1) || (xen_vector < 0))
696 return;
697
698 for_each_cpu_and(cpu, mask, cpu_online_mask) {
699 if (this_cpu == cpu)
700 continue;
701
702 xen_send_IPI_one(cpu, xen_vector);
703 }
704}
705
706void xen_send_IPI_allbutself(int vector)
707{
708 xen_send_IPI_mask_allbutself(cpu_online_mask, vector);
709}
710
711static irqreturn_t xen_call_function_interrupt(int irq, void *dev_id)
712{
713 irq_enter();
714 generic_smp_call_function_interrupt();
715 inc_irq_stat(irq_call_count);
716 irq_exit();
717
718 return IRQ_HANDLED;
719}
720
721static irqreturn_t xen_call_function_single_interrupt(int irq, void *dev_id)
722{
723 irq_enter();
724 generic_smp_call_function_single_interrupt();
725 inc_irq_stat(irq_call_count);
726 irq_exit();
727
728 return IRQ_HANDLED;
729}
730
731static irqreturn_t xen_irq_work_interrupt(int irq, void *dev_id)
732{
733 irq_enter();
734 irq_work_run();
735 inc_irq_stat(apic_irq_work_irqs);
736 irq_exit();
737
738 return IRQ_HANDLED;
739}
740
741static const struct smp_ops xen_smp_ops __initconst = {
742 .smp_prepare_boot_cpu = xen_smp_prepare_boot_cpu,
743 .smp_prepare_cpus = xen_smp_prepare_cpus,
744 .smp_cpus_done = xen_smp_cpus_done,
745
746 .cpu_up = xen_cpu_up,
747 .cpu_die = xen_cpu_die,
748 .cpu_disable = xen_cpu_disable,
749 .play_dead = xen_play_dead,
750
751 .stop_other_cpus = xen_stop_other_cpus,
752 .smp_send_reschedule = xen_smp_send_reschedule,
753
754 .send_call_func_ipi = xen_smp_send_call_function_ipi,
755 .send_call_func_single_ipi = xen_smp_send_call_function_single_ipi,
756};
757
758void __init xen_smp_init(void)
759{
760 smp_ops = xen_smp_ops;
761 xen_fill_possible_map();
762}
763
764static void __init xen_hvm_smp_prepare_cpus(unsigned int max_cpus)
765{
766 native_smp_prepare_cpus(max_cpus);
767 WARN_ON(xen_smp_intr_init(0));
768
769 xen_init_lock_cpu(0);
770}
771
772void __init xen_hvm_smp_init(void)
773{
774 smp_ops.smp_prepare_cpus = xen_hvm_smp_prepare_cpus;
775 smp_ops.smp_send_reschedule = xen_smp_send_reschedule;
776 smp_ops.cpu_die = xen_cpu_die;
777 smp_ops.send_call_func_ipi = xen_smp_send_call_function_ipi;
778 smp_ops.send_call_func_single_ipi = xen_smp_send_call_function_single_ipi;
779 smp_ops.smp_prepare_boot_cpu = xen_smp_prepare_boot_cpu;
780}
781