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KVM: ia64: dynamic nr online cpus
[net-next-2.6.git] / arch / ia64 / kvm / kvm-ia64.c
CommitLineData
b024b793
XZ		 1/*
2 * kvm_ia64.c: Basic KVM suppport On Itanium series processors
3 *
4 *
5 * Copyright (C) 2007, Intel Corporation.
6 * Xiantao Zhang (xiantao.zhang@intel.com)
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms and conditions of the GNU General Public License,
10 * version 2, as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
19 * Place - Suite 330, Boston, MA 02111-1307 USA.
20 *
21 */
22
23#include <linux/module.h>
24#include <linux/errno.h>
25#include <linux/percpu.h>
26#include <linux/gfp.h>
27#include <linux/fs.h>
28#include <linux/smp.h>
29#include <linux/kvm_host.h>
30#include <linux/kvm.h>
31#include <linux/bitops.h>
32#include <linux/hrtimer.h>
33#include <linux/uaccess.h>
19de40a8 34#include <linux/iommu.h>
2381ad24 35#include <linux/intel-iommu.h>
b024b793
XZ		 36
37#include <asm/pgtable.h>
38#include <asm/gcc_intrin.h>
39#include <asm/pal.h>
40#include <asm/cacheflush.h>
41#include <asm/div64.h>
42#include <asm/tlb.h>
9f726323 43#include <asm/elf.h>
b024b793
XZ		 44
45#include "misc.h"
46#include "vti.h"
47#include "iodev.h"
48#include "ioapic.h"
49#include "lapic.h"
2f749771 50#include "irq.h"
b024b793
XZ		 51
52static unsigned long kvm_vmm_base;
53static unsigned long kvm_vsa_base;
54static unsigned long kvm_vm_buffer;
55static unsigned long kvm_vm_buffer_size;
56unsigned long kvm_vmm_gp;
57
58static long vp_env_info;
59
60static struct kvm_vmm_info *kvm_vmm_info;
61
62static DEFINE_PER_CPU(struct kvm_vcpu *, last_vcpu);
63
64struct kvm_stats_debugfs_item debugfs_entries[] = {
65 { NULL }
66};
67
b024b793
XZ		 68static void kvm_flush_icache(unsigned long start, unsigned long len)
69{
70 int l;
71
72 for (l = 0; l < (len + 32); l += 32)
73 ia64_fc(start + l);
74
75 ia64_sync_i();
76 ia64_srlz_i();
77}
78
79static void kvm_flush_tlb_all(void)
80{
81 unsigned long i, j, count0, count1, stride0, stride1, addr;
82 long flags;
83
84 addr = local_cpu_data->ptce_base;
85 count0 = local_cpu_data->ptce_count[0];
86 count1 = local_cpu_data->ptce_count[1];
87 stride0 = local_cpu_data->ptce_stride[0];
88 stride1 = local_cpu_data->ptce_stride[1];
89
90 local_irq_save(flags);
91 for (i = 0; i < count0; ++i) {
92 for (j = 0; j < count1; ++j) {
93 ia64_ptce(addr);
94 addr += stride1;
95 }
96 addr += stride0;
97 }
98 local_irq_restore(flags);
99 ia64_srlz_i(); /* srlz.i implies srlz.d */
100}
101
102long ia64_pal_vp_create(u64 *vpd, u64 *host_iva, u64 *opt_handler)
103{
104 struct ia64_pal_retval iprv;
105
106 PAL_CALL_STK(iprv, PAL_VP_CREATE, (u64)vpd, (u64)host_iva,
107 (u64)opt_handler);
108
109 return iprv.status;
110}
111
112static DEFINE_SPINLOCK(vp_lock);
113
114void kvm_arch_hardware_enable(void *garbage)
115{
116 long status;
117 long tmp_base;
118 unsigned long pte;
119 unsigned long saved_psr;
120 int slot;
121
122 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base),
123 PAGE_KERNEL));
124 local_irq_save(saved_psr);
125 slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
cab7a1ee 126 local_irq_restore(saved_psr);
b024b793
XZ		 127 if (slot < 0)
128 return;
b024b793
XZ		 129
130 spin_lock(&vp_lock);
131 status = ia64_pal_vp_init_env(kvm_vsa_base ?
132 VP_INIT_ENV : VP_INIT_ENV_INITALIZE,
133 __pa(kvm_vm_buffer), KVM_VM_BUFFER_BASE, &tmp_base);
134 if (status != 0) {
135 printk(KERN_WARNING"kvm: Failed to Enable VT Support!!!!\n");
136 return ;
137 }
138
139 if (!kvm_vsa_base) {
140 kvm_vsa_base = tmp_base;
141 printk(KERN_INFO"kvm: kvm_vsa_base:0x%lx\n", kvm_vsa_base);
142 }
143 spin_unlock(&vp_lock);
144 ia64_ptr_entry(0x3, slot);
145}
146
147void kvm_arch_hardware_disable(void *garbage)
148{
149
150 long status;
151 int slot;
152 unsigned long pte;
153 unsigned long saved_psr;
154 unsigned long host_iva = ia64_getreg(_IA64_REG_CR_IVA);
155
156 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base),
157 PAGE_KERNEL));
158
159 local_irq_save(saved_psr);
160 slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
cab7a1ee 161 local_irq_restore(saved_psr);
b024b793
XZ		 162 if (slot < 0)
163 return;
b024b793
XZ		 164
165 status = ia64_pal_vp_exit_env(host_iva);
166 if (status)
167 printk(KERN_DEBUG"kvm: Failed to disable VT support! :%ld\n",
168 status);
169 ia64_ptr_entry(0x3, slot);
170}
171
172void kvm_arch_check_processor_compat(void *rtn)
173{
174 *(int *)rtn = 0;
175}
176
177int kvm_dev_ioctl_check_extension(long ext)
178{
179
180 int r;
181
182 switch (ext) {
183 case KVM_CAP_IRQCHIP:
8c4b537d 184 case KVM_CAP_MP_STATE:
b024b793
XZ		 185
186 r = 1;
187 break;
7f39f8ac
LV		 188 case KVM_CAP_COALESCED_MMIO:
189 r = KVM_COALESCED_MMIO_PAGE_OFFSET;
190 break;
2381ad24 191 case KVM_CAP_IOMMU:
19de40a8 192 r = iommu_found();
2381ad24 193 break;
b024b793
XZ		 194 default:
195 r = 0;
196 }
197 return r;
198
199}
200
201static struct kvm_io_device *vcpu_find_mmio_dev(struct kvm_vcpu *vcpu,
92760499 202 gpa_t addr, int len, int is_write)
b024b793
XZ		 203{
204 struct kvm_io_device *dev;
205
92760499 206 dev = kvm_io_bus_find_dev(&vcpu->kvm->mmio_bus, addr, len, is_write);
b024b793
XZ		 207
208 return dev;
209}
210
211static int handle_vm_error(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
212{
213 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
214 kvm_run->hw.hardware_exit_reason = 1;
215 return 0;
216}
217
218static int handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
219{
220 struct kvm_mmio_req *p;
221 struct kvm_io_device *mmio_dev;
222
223 p = kvm_get_vcpu_ioreq(vcpu);
224
225 if ((p->addr & PAGE_MASK) == IOAPIC_DEFAULT_BASE_ADDRESS)
226 goto mmio;
227 vcpu->mmio_needed = 1;
228 vcpu->mmio_phys_addr = kvm_run->mmio.phys_addr = p->addr;
229 vcpu->mmio_size = kvm_run->mmio.len = p->size;
230 vcpu->mmio_is_write = kvm_run->mmio.is_write = !p->dir;
231
232 if (vcpu->mmio_is_write)
233 memcpy(vcpu->mmio_data, &p->data, p->size);
234 memcpy(kvm_run->mmio.data, &p->data, p->size);
235 kvm_run->exit_reason = KVM_EXIT_MMIO;
236 return 0;
237mmio:
92760499 238 mmio_dev = vcpu_find_mmio_dev(vcpu, p->addr, p->size, !p->dir);
b024b793
XZ		 239 if (mmio_dev) {
240 if (!p->dir)
241 kvm_iodevice_write(mmio_dev, p->addr, p->size,
242 &p->data);
243 else
244 kvm_iodevice_read(mmio_dev, p->addr, p->size,
245 &p->data);
246
247 } else
248 printk(KERN_ERR"kvm: No iodevice found! addr:%lx\n", p->addr);
249 p->state = STATE_IORESP_READY;
250
251 return 1;
252}
253
254static int handle_pal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
255{
256 struct exit_ctl_data *p;
257
258 p = kvm_get_exit_data(vcpu);
259
260 if (p->exit_reason == EXIT_REASON_PAL_CALL)
261 return kvm_pal_emul(vcpu, kvm_run);
262 else {
263 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
264 kvm_run->hw.hardware_exit_reason = 2;
265 return 0;
266 }
267}
268
269static int handle_sal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
270{
271 struct exit_ctl_data *p;
272
273 p = kvm_get_exit_data(vcpu);
274
275 if (p->exit_reason == EXIT_REASON_SAL_CALL) {
276 kvm_sal_emul(vcpu);
277 return 1;
278 } else {
279 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
280 kvm_run->hw.hardware_exit_reason = 3;
281 return 0;
282 }
283
284}
285
286/*
287 * offset: address offset to IPI space.
288 * value: deliver value.
289 */
290static void vcpu_deliver_ipi(struct kvm_vcpu *vcpu, uint64_t dm,
291 uint64_t vector)
292{
293 switch (dm) {
294 case SAPIC_FIXED:
295 kvm_apic_set_irq(vcpu, vector, 0);
296 break;
297 case SAPIC_NMI:
298 kvm_apic_set_irq(vcpu, 2, 0);
299 break;
300 case SAPIC_EXTINT:
301 kvm_apic_set_irq(vcpu, 0, 0);
302 break;
303 case SAPIC_INIT:
304 case SAPIC_PMI:
305 default:
306 printk(KERN_ERR"kvm: Unimplemented Deliver reserved IPI!\n");
307 break;
308 }
309}
310
311static struct kvm_vcpu *lid_to_vcpu(struct kvm *kvm, unsigned long id,
312 unsigned long eid)
313{
314 union ia64_lid lid;
315 int i;
316
934d534f 317 for (i = 0; i < kvm->arch.online_vcpus; i++) {
b024b793
XZ		 318 if (kvm->vcpus[i]) {
319 lid.val = VCPU_LID(kvm->vcpus[i]);
320 if (lid.id == id && lid.eid == eid)
321 return kvm->vcpus[i];
322 }
323 }
324
325 return NULL;
326}
327
328static int handle_ipi(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
329{
330 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
331 struct kvm_vcpu *target_vcpu;
332 struct kvm_pt_regs *regs;
333 union ia64_ipi_a addr = p->u.ipi_data.addr;
334 union ia64_ipi_d data = p->u.ipi_data.data;
335
336 target_vcpu = lid_to_vcpu(vcpu->kvm, addr.id, addr.eid);
337 if (!target_vcpu)
338 return handle_vm_error(vcpu, kvm_run);
339
340 if (!target_vcpu->arch.launched) {
341 regs = vcpu_regs(target_vcpu);
342
343 regs->cr_iip = vcpu->kvm->arch.rdv_sal_data.boot_ip;
344 regs->r1 = vcpu->kvm->arch.rdv_sal_data.boot_gp;
345
a4535290 346 target_vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
b024b793
XZ		 347 if (waitqueue_active(&target_vcpu->wq))
348 wake_up_interruptible(&target_vcpu->wq);
349 } else {
350 vcpu_deliver_ipi(target_vcpu, data.dm, data.vector);
351 if (target_vcpu != vcpu)
352 kvm_vcpu_kick(target_vcpu);
353 }
354
355 return 1;
356}
357
358struct call_data {
359 struct kvm_ptc_g ptc_g_data;
360 struct kvm_vcpu *vcpu;
361};
362
363static void vcpu_global_purge(void *info)
364{
365 struct call_data *p = (struct call_data *)info;
366 struct kvm_vcpu *vcpu = p->vcpu;
367
368 if (test_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests))
369 return;
370
371 set_bit(KVM_REQ_PTC_G, &vcpu->requests);
372 if (vcpu->arch.ptc_g_count < MAX_PTC_G_NUM) {
373 vcpu->arch.ptc_g_data[vcpu->arch.ptc_g_count++] =
374 p->ptc_g_data;
375 } else {
376 clear_bit(KVM_REQ_PTC_G, &vcpu->requests);
377 vcpu->arch.ptc_g_count = 0;
378 set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests);
379 }
380}
381
382static int handle_global_purge(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
383{
384 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
385 struct kvm *kvm = vcpu->kvm;
386 struct call_data call_data;
387 int i;
decc9016 388
b024b793
XZ		 389 call_data.ptc_g_data = p->u.ptc_g_data;
390
934d534f 391 for (i = 0; i < kvm->arch.online_vcpus; i++) {
b024b793 392 if (!kvm->vcpus[i] || kvm->vcpus[i]->arch.mp_state ==
a4535290 393 KVM_MP_STATE_UNINITIALIZED ||
b024b793
XZ		 394 vcpu == kvm->vcpus[i])
395 continue;
396
397 if (waitqueue_active(&kvm->vcpus[i]->wq))
398 wake_up_interruptible(&kvm->vcpus[i]->wq);
399
400 if (kvm->vcpus[i]->cpu != -1) {
401 call_data.vcpu = kvm->vcpus[i];
402 smp_call_function_single(kvm->vcpus[i]->cpu,
2f73ccab 403 vcpu_global_purge, &call_data, 1);
b024b793
XZ		 404 } else
405 printk(KERN_WARNING"kvm: Uninit vcpu received ipi!\n");
406
407 }
408 return 1;
409}
410
411static int handle_switch_rr6(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
412{
413 return 1;
414}
415
416int kvm_emulate_halt(struct kvm_vcpu *vcpu)
417{
418
419 ktime_t kt;
420 long itc_diff;
421 unsigned long vcpu_now_itc;
b024b793
XZ		 422 unsigned long expires;
423 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
424 unsigned long cyc_per_usec = local_cpu_data->cyc_per_usec;
425 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
426
decc9016 427 if (irqchip_in_kernel(vcpu->kvm)) {
b024b793 428
decc9016 429 vcpu_now_itc = ia64_getreg(_IA64_REG_AR_ITC) + vcpu->arch.itc_offset;
b024b793 430
decc9016
XZ		 431 if (time_after(vcpu_now_itc, vpd->itm)) {
432 vcpu->arch.timer_check = 1;
433 return 1;
434 }
435 itc_diff = vpd->itm - vcpu_now_itc;
436 if (itc_diff < 0)
437 itc_diff = -itc_diff;
438
439 expires = div64_u64(itc_diff, cyc_per_usec);
440 kt = ktime_set(0, 1000 * expires);
441
decc9016
XZ		 442 vcpu->arch.ht_active = 1;
443 hrtimer_start(p_ht, kt, HRTIMER_MODE_ABS);
b024b793 444
a4535290 445 vcpu->arch.mp_state = KVM_MP_STATE_HALTED;
b024b793
XZ		 446 kvm_vcpu_block(vcpu);
447 hrtimer_cancel(p_ht);
448 vcpu->arch.ht_active = 0;
449
decc9016
XZ		 450 if (test_and_clear_bit(KVM_REQ_UNHALT, &vcpu->requests))
451 if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED)
452 vcpu->arch.mp_state =
453 KVM_MP_STATE_RUNNABLE;
decc9016 454
a4535290 455 if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE)
b024b793
XZ		 456 return -EINTR;
457 return 1;
458 } else {
459 printk(KERN_ERR"kvm: Unsupported userspace halt!");
460 return 0;
461 }
462}
463
464static int handle_vm_shutdown(struct kvm_vcpu *vcpu,
465 struct kvm_run *kvm_run)
466{
467 kvm_run->exit_reason = KVM_EXIT_SHUTDOWN;
468 return 0;
469}
470
471static int handle_external_interrupt(struct kvm_vcpu *vcpu,
472 struct kvm_run *kvm_run)
473{
474 return 1;
475}
476
7d637978
XZ		 477static int handle_vcpu_debug(struct kvm_vcpu *vcpu,
478 struct kvm_run *kvm_run)
479{
480 printk("VMM: %s", vcpu->arch.log_buf);
481 return 1;
482}
483
b024b793
XZ		 484static int (*kvm_vti_exit_handlers[])(struct kvm_vcpu *vcpu,
485 struct kvm_run *kvm_run) = {
486 [EXIT_REASON_VM_PANIC] = handle_vm_error,
487 [EXIT_REASON_MMIO_INSTRUCTION] = handle_mmio,
488 [EXIT_REASON_PAL_CALL] = handle_pal_call,
489 [EXIT_REASON_SAL_CALL] = handle_sal_call,
490 [EXIT_REASON_SWITCH_RR6] = handle_switch_rr6,
491 [EXIT_REASON_VM_DESTROY] = handle_vm_shutdown,
492 [EXIT_REASON_EXTERNAL_INTERRUPT] = handle_external_interrupt,
493 [EXIT_REASON_IPI] = handle_ipi,
494 [EXIT_REASON_PTC_G] = handle_global_purge,
7d637978 495 [EXIT_REASON_DEBUG] = handle_vcpu_debug,
b024b793
XZ		 496
497};
498
499static const int kvm_vti_max_exit_handlers =
500 sizeof(kvm_vti_exit_handlers)/sizeof(*kvm_vti_exit_handlers);
501
b024b793
XZ		 502static uint32_t kvm_get_exit_reason(struct kvm_vcpu *vcpu)
503{
504 struct exit_ctl_data *p_exit_data;
505
506 p_exit_data = kvm_get_exit_data(vcpu);
507 return p_exit_data->exit_reason;
508}
509
510/*
511 * The guest has exited. See if we can fix it or if we need userspace
512 * assistance.
513 */
514static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
515{
516 u32 exit_reason = kvm_get_exit_reason(vcpu);
517 vcpu->arch.last_exit = exit_reason;
518
519 if (exit_reason < kvm_vti_max_exit_handlers
520 && kvm_vti_exit_handlers[exit_reason])
521 return kvm_vti_exit_handlers[exit_reason](vcpu, kvm_run);
522 else {
523 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
524 kvm_run->hw.hardware_exit_reason = exit_reason;
525 }
526 return 0;
527}
528
529static inline void vti_set_rr6(unsigned long rr6)
530{
531 ia64_set_rr(RR6, rr6);
532 ia64_srlz_i();
533}
534
535static int kvm_insert_vmm_mapping(struct kvm_vcpu *vcpu)
536{
537 unsigned long pte;
538 struct kvm *kvm = vcpu->kvm;
539 int r;
540
541 /*Insert a pair of tr to map vmm*/
542 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL));
543 r = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
544 if (r < 0)
545 goto out;
546 vcpu->arch.vmm_tr_slot = r;
547 /*Insert a pairt of tr to map data of vm*/
548 pte = pte_val(mk_pte_phys(__pa(kvm->arch.vm_base), PAGE_KERNEL));
549 r = ia64_itr_entry(0x3, KVM_VM_DATA_BASE,
550 pte, KVM_VM_DATA_SHIFT);
551 if (r < 0)
552 goto out;
553 vcpu->arch.vm_tr_slot = r;
554 r = 0;
555out:
556 return r;
557
558}
559
560static void kvm_purge_vmm_mapping(struct kvm_vcpu *vcpu)
561{
562
563 ia64_ptr_entry(0x3, vcpu->arch.vmm_tr_slot);
564 ia64_ptr_entry(0x3, vcpu->arch.vm_tr_slot);
565
566}
567
568static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu)
569{
570 int cpu = smp_processor_id();
571
572 if (vcpu->arch.last_run_cpu != cpu ||
573 per_cpu(last_vcpu, cpu) != vcpu) {
574 per_cpu(last_vcpu, cpu) = vcpu;
575 vcpu->arch.last_run_cpu = cpu;
576 kvm_flush_tlb_all();
577 }
578
579 vcpu->arch.host_rr6 = ia64_get_rr(RR6);
580 vti_set_rr6(vcpu->arch.vmm_rr);
581 return kvm_insert_vmm_mapping(vcpu);
582}
583static void kvm_vcpu_post_transition(struct kvm_vcpu *vcpu)
584{
585 kvm_purge_vmm_mapping(vcpu);
586 vti_set_rr6(vcpu->arch.host_rr6);
587}
588
589static int vti_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
590{
591 union context *host_ctx, *guest_ctx;
592 int r;
593
594 /*Get host and guest context with guest address space.*/
595 host_ctx = kvm_get_host_context(vcpu);
596 guest_ctx = kvm_get_guest_context(vcpu);
597
598 r = kvm_vcpu_pre_transition(vcpu);
599 if (r < 0)
600 goto out;
601 kvm_vmm_info->tramp_entry(host_ctx, guest_ctx);
602 kvm_vcpu_post_transition(vcpu);
603 r = 0;
604out:
605 return r;
606}
607
608static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
609{
610 int r;
611
612again:
613 preempt_disable();
b024b793
XZ		 614 local_irq_disable();
615
616 if (signal_pending(current)) {
617 local_irq_enable();
618 preempt_enable();
619 r = -EINTR;
620 kvm_run->exit_reason = KVM_EXIT_INTR;
621 goto out;
622 }
623
624 vcpu->guest_mode = 1;
625 kvm_guest_enter();
decc9016 626 down_read(&vcpu->kvm->slots_lock);
b024b793
XZ		 627 r = vti_vcpu_run(vcpu, kvm_run);
628 if (r < 0) {
629 local_irq_enable();
630 preempt_enable();
631 kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
632 goto out;
633 }
634
635 vcpu->arch.launched = 1;
636 vcpu->guest_mode = 0;
637 local_irq_enable();
638
639 /*
640 * We must have an instruction between local_irq_enable() and
641 * kvm_guest_exit(), so the timer interrupt isn't delayed by
642 * the interrupt shadow. The stat.exits increment will do nicely.
643 * But we need to prevent reordering, hence this barrier():
644 */
645 barrier();
b024b793 646 kvm_guest_exit();
decc9016 647 up_read(&vcpu->kvm->slots_lock);
b024b793
XZ		 648 preempt_enable();
649
650 r = kvm_handle_exit(kvm_run, vcpu);
651
652 if (r > 0) {
653 if (!need_resched())
654 goto again;
655 }
656
657out:
658 if (r > 0) {
659 kvm_resched(vcpu);
660 goto again;
661 }
662
663 return r;
664}
665
666static void kvm_set_mmio_data(struct kvm_vcpu *vcpu)
667{
668 struct kvm_mmio_req *p = kvm_get_vcpu_ioreq(vcpu);
669
670 if (!vcpu->mmio_is_write)
671 memcpy(&p->data, vcpu->mmio_data, 8);
672 p->state = STATE_IORESP_READY;
673}
674
675int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
676{
677 int r;
678 sigset_t sigsaved;
679
680 vcpu_load(vcpu);
681
a2e4e289
XZ		 682 if (vcpu->sigset_active)
683 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
684
a4535290 685 if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) {
b024b793 686 kvm_vcpu_block(vcpu);
decc9016 687 clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
a2e4e289
XZ		 688 r = -EAGAIN;
689 goto out;
b024b793
XZ		 690 }
691
b024b793
XZ		 692 if (vcpu->mmio_needed) {
693 memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8);
694 kvm_set_mmio_data(vcpu);
695 vcpu->mmio_read_completed = 1;
696 vcpu->mmio_needed = 0;
697 }
698 r = __vcpu_run(vcpu, kvm_run);
a2e4e289 699out:
b024b793
XZ		 700 if (vcpu->sigset_active)
701 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
702
703 vcpu_put(vcpu);
704 return r;
705}
706
b024b793
XZ		 707static struct kvm *kvm_alloc_kvm(void)
708{
709
710 struct kvm *kvm;
711 uint64_t vm_base;
712
a917f7af
XZ		 713 BUG_ON(sizeof(struct kvm) > KVM_VM_STRUCT_SIZE);
714
b024b793
XZ		 715 vm_base = __get_free_pages(GFP_KERNEL, get_order(KVM_VM_DATA_SIZE));
716
717 if (!vm_base)
718 return ERR_PTR(-ENOMEM);
b024b793 719
b024b793 720 memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
a917f7af
XZ		 721 kvm = (struct kvm *)(vm_base +
722 offsetof(struct kvm_vm_data, kvm_vm_struct));
b024b793 723 kvm->arch.vm_base = vm_base;
a917f7af 724 printk(KERN_DEBUG"kvm: vm's data area:0x%lx\n", vm_base);
b024b793
XZ		 725
726 return kvm;
727}
728
729struct kvm_io_range {
730 unsigned long start;
731 unsigned long size;
732 unsigned long type;
733};
734
735static const struct kvm_io_range io_ranges[] = {
736 {VGA_IO_START, VGA_IO_SIZE, GPFN_FRAME_BUFFER},
737 {MMIO_START, MMIO_SIZE, GPFN_LOW_MMIO},
738 {LEGACY_IO_START, LEGACY_IO_SIZE, GPFN_LEGACY_IO},
739 {IO_SAPIC_START, IO_SAPIC_SIZE, GPFN_IOSAPIC},
740 {PIB_START, PIB_SIZE, GPFN_PIB},
741};
742
743static void kvm_build_io_pmt(struct kvm *kvm)
744{
745 unsigned long i, j;
746
747 /* Mark I/O ranges */
748 for (i = 0; i < (sizeof(io_ranges) / sizeof(struct kvm_io_range));
749 i++) {
750 for (j = io_ranges[i].start;
751 j < io_ranges[i].start + io_ranges[i].size;
752 j += PAGE_SIZE)
753 kvm_set_pmt_entry(kvm, j >> PAGE_SHIFT,
754 io_ranges[i].type, 0);
755 }
756
757}
758
759/*Use unused rids to virtualize guest rid.*/
760#define GUEST_PHYSICAL_RR0 0x1739
761#define GUEST_PHYSICAL_RR4 0x2739
762#define VMM_INIT_RR 0x1660
763
764static void kvm_init_vm(struct kvm *kvm)
765{
b024b793
XZ		 766 BUG_ON(!kvm);
767
768 kvm->arch.metaphysical_rr0 = GUEST_PHYSICAL_RR0;
769 kvm->arch.metaphysical_rr4 = GUEST_PHYSICAL_RR4;
770 kvm->arch.vmm_init_rr = VMM_INIT_RR;
771
b024b793
XZ		 772 /*
773 *Fill P2M entries for MMIO/IO ranges
774 */
775 kvm_build_io_pmt(kvm);
776
2381ad24 777 INIT_LIST_HEAD(&kvm->arch.assigned_dev_head);
5550af4d
SY		 778
779 /* Reserve bit 0 of irq_sources_bitmap for userspace irq source */
780 set_bit(KVM_USERSPACE_IRQ_SOURCE_ID, &kvm->arch.irq_sources_bitmap);
b024b793
XZ		 781}
782
783struct kvm *kvm_arch_create_vm(void)
784{
785 struct kvm *kvm = kvm_alloc_kvm();
786
787 if (IS_ERR(kvm))
788 return ERR_PTR(-ENOMEM);
789 kvm_init_vm(kvm);
790
934d534f
JS		 791 kvm->arch.online_vcpus = 0;
792
b024b793
XZ		 793 return kvm;
794
795}
796
797static int kvm_vm_ioctl_get_irqchip(struct kvm *kvm,
798 struct kvm_irqchip *chip)
799{
800 int r;
801
802 r = 0;
803 switch (chip->chip_id) {
804 case KVM_IRQCHIP_IOAPIC:
805 memcpy(&chip->chip.ioapic, ioapic_irqchip(kvm),
806 sizeof(struct kvm_ioapic_state));
807 break;
808 default:
809 r = -EINVAL;
810 break;
811 }
812 return r;
813}
814
815static int kvm_vm_ioctl_set_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
816{
817 int r;
818
819 r = 0;
820 switch (chip->chip_id) {
821 case KVM_IRQCHIP_IOAPIC:
822 memcpy(ioapic_irqchip(kvm),
823 &chip->chip.ioapic,
824 sizeof(struct kvm_ioapic_state));
825 break;
826 default:
827 r = -EINVAL;
828 break;
829 }
830 return r;
831}
832
833#define RESTORE_REGS(_x) vcpu->arch._x = regs->_x
834
835int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
836{
b024b793 837 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
042b26ed 838 int i;
b024b793
XZ		 839
840 vcpu_load(vcpu);
841
842 for (i = 0; i < 16; i++) {
843 vpd->vgr[i] = regs->vpd.vgr[i];
844 vpd->vbgr[i] = regs->vpd.vbgr[i];
845 }
846 for (i = 0; i < 128; i++)
847 vpd->vcr[i] = regs->vpd.vcr[i];
848 vpd->vhpi = regs->vpd.vhpi;
849 vpd->vnat = regs->vpd.vnat;
850 vpd->vbnat = regs->vpd.vbnat;
851 vpd->vpsr = regs->vpd.vpsr;
852
853 vpd->vpr = regs->vpd.vpr;
854
042b26ed 855 memcpy(&vcpu->arch.guest, &regs->saved_guest, sizeof(union context));
b024b793
XZ		 856
857 RESTORE_REGS(mp_state);
858 RESTORE_REGS(vmm_rr);
859 memcpy(vcpu->arch.itrs, regs->itrs, sizeof(struct thash_data) * NITRS);
860 memcpy(vcpu->arch.dtrs, regs->dtrs, sizeof(struct thash_data) * NDTRS);
861 RESTORE_REGS(itr_regions);
862 RESTORE_REGS(dtr_regions);
863 RESTORE_REGS(tc_regions);
864 RESTORE_REGS(irq_check);
865 RESTORE_REGS(itc_check);
866 RESTORE_REGS(timer_check);
867 RESTORE_REGS(timer_pending);
868 RESTORE_REGS(last_itc);
869 for (i = 0; i < 8; i++) {
870 vcpu->arch.vrr[i] = regs->vrr[i];
871 vcpu->arch.ibr[i] = regs->ibr[i];
872 vcpu->arch.dbr[i] = regs->dbr[i];
873 }
874 for (i = 0; i < 4; i++)
875 vcpu->arch.insvc[i] = regs->insvc[i];
876 RESTORE_REGS(xtp);
877 RESTORE_REGS(metaphysical_rr0);
878 RESTORE_REGS(metaphysical_rr4);
879 RESTORE_REGS(metaphysical_saved_rr0);
880 RESTORE_REGS(metaphysical_saved_rr4);
881 RESTORE_REGS(fp_psr);
882 RESTORE_REGS(saved_gp);
883
884 vcpu->arch.irq_new_pending = 1;
885 vcpu->arch.itc_offset = regs->saved_itc - ia64_getreg(_IA64_REG_AR_ITC);
886 set_bit(KVM_REQ_RESUME, &vcpu->requests);
887
888 vcpu_put(vcpu);
042b26ed
JS		 889
890 return 0;
b024b793
XZ		 891}
892
893long kvm_arch_vm_ioctl(struct file *filp,
894 unsigned int ioctl, unsigned long arg)
895{
896 struct kvm *kvm = filp->private_data;
897 void __user *argp = (void __user *)arg;
898 int r = -EINVAL;
899
900 switch (ioctl) {
901 case KVM_SET_MEMORY_REGION: {
902 struct kvm_memory_region kvm_mem;
903 struct kvm_userspace_memory_region kvm_userspace_mem;
904
905 r = -EFAULT;
906 if (copy_from_user(&kvm_mem, argp, sizeof kvm_mem))
907 goto out;
908 kvm_userspace_mem.slot = kvm_mem.slot;
909 kvm_userspace_mem.flags = kvm_mem.flags;
910 kvm_userspace_mem.guest_phys_addr =
911 kvm_mem.guest_phys_addr;
912 kvm_userspace_mem.memory_size = kvm_mem.memory_size;
913 r = kvm_vm_ioctl_set_memory_region(kvm,
914 &kvm_userspace_mem, 0);
915 if (r)
916 goto out;
917 break;
918 }
919 case KVM_CREATE_IRQCHIP:
920 r = -EFAULT;
921 r = kvm_ioapic_init(kvm);
922 if (r)
923 goto out;
399ec807
AK		 924 r = kvm_setup_default_irq_routing(kvm);
925 if (r) {
926 kfree(kvm->arch.vioapic);
927 goto out;
928 }
b024b793
XZ		 929 break;
930 case KVM_IRQ_LINE: {
931 struct kvm_irq_level irq_event;
932
933 r = -EFAULT;
934 if (copy_from_user(&irq_event, argp, sizeof irq_event))
935 goto out;
936 if (irqchip_in_kernel(kvm)) {
937 mutex_lock(&kvm->lock);
5550af4d
SY		 938 kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
939 irq_event.irq, irq_event.level);
b024b793
XZ		 940 mutex_unlock(&kvm->lock);
941 r = 0;
942 }
943 break;
944 }
945 case KVM_GET_IRQCHIP: {
946 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
947 struct kvm_irqchip chip;
948
949 r = -EFAULT;
950 if (copy_from_user(&chip, argp, sizeof chip))
951 goto out;
952 r = -ENXIO;
953 if (!irqchip_in_kernel(kvm))
954 goto out;
955 r = kvm_vm_ioctl_get_irqchip(kvm, &chip);
956 if (r)
957 goto out;
958 r = -EFAULT;
959 if (copy_to_user(argp, &chip, sizeof chip))
960 goto out;
961 r = 0;
962 break;
963 }
964 case KVM_SET_IRQCHIP: {
965 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
966 struct kvm_irqchip chip;
967
968 r = -EFAULT;
969 if (copy_from_user(&chip, argp, sizeof chip))
970 goto out;
971 r = -ENXIO;
972 if (!irqchip_in_kernel(kvm))
973 goto out;
974 r = kvm_vm_ioctl_set_irqchip(kvm, &chip);
975 if (r)
976 goto out;
977 r = 0;
978 break;
979 }
980 default:
981 ;
982 }
983out:
984 return r;
985}
986
987int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
988 struct kvm_sregs *sregs)
989{
990 return -EINVAL;
991}
992
993int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
994 struct kvm_sregs *sregs)
995{
996 return -EINVAL;
997
998}
999int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
1000 struct kvm_translation *tr)
1001{
1002
1003 return -EINVAL;
1004}
1005
1006static int kvm_alloc_vmm_area(void)
1007{
1008 if (!kvm_vmm_base && (kvm_vm_buffer_size < KVM_VM_BUFFER_SIZE)) {
1009 kvm_vmm_base = __get_free_pages(GFP_KERNEL,
1010 get_order(KVM_VMM_SIZE));
1011 if (!kvm_vmm_base)
1012 return -ENOMEM;
1013
1014 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1015 kvm_vm_buffer = kvm_vmm_base + VMM_SIZE;
1016
1017 printk(KERN_DEBUG"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n",
1018 kvm_vmm_base, kvm_vm_buffer);
1019 }
1020
1021 return 0;
1022}
1023
1024static void kvm_free_vmm_area(void)
1025{
1026 if (kvm_vmm_base) {
1027 /*Zero this area before free to avoid bits leak!!*/
1028 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1029 free_pages(kvm_vmm_base, get_order(KVM_VMM_SIZE));
1030 kvm_vmm_base = 0;
1031 kvm_vm_buffer = 0;
1032 kvm_vsa_base = 0;
1033 }
1034}
1035
b024b793
XZ		 1036static void vti_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
1037{
1038}
1039
1040static int vti_init_vpd(struct kvm_vcpu *vcpu)
1041{
1042 int i;
1043 union cpuid3_t cpuid3;
1044 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1045
1046 if (IS_ERR(vpd))
1047 return PTR_ERR(vpd);
1048
1049 /* CPUID init */
1050 for (i = 0; i < 5; i++)
1051 vpd->vcpuid[i] = ia64_get_cpuid(i);
1052
1053 /* Limit the CPUID number to 5 */
1054 cpuid3.value = vpd->vcpuid[3];
1055 cpuid3.number = 4; /* 5 - 1 */
1056 vpd->vcpuid[3] = cpuid3.value;
1057
1058 /*Set vac and vdc fields*/
1059 vpd->vac.a_from_int_cr = 1;
1060 vpd->vac.a_to_int_cr = 1;
1061 vpd->vac.a_from_psr = 1;
1062 vpd->vac.a_from_cpuid = 1;
1063 vpd->vac.a_cover = 1;
1064 vpd->vac.a_bsw = 1;
1065 vpd->vac.a_int = 1;
1066 vpd->vdc.d_vmsw = 1;
1067
1068 /*Set virtual buffer*/
1069 vpd->virt_env_vaddr = KVM_VM_BUFFER_BASE;
1070
1071 return 0;
1072}
1073
1074static int vti_create_vp(struct kvm_vcpu *vcpu)
1075{
1076 long ret;
1077 struct vpd *vpd = vcpu->arch.vpd;
1078 unsigned long vmm_ivt;
1079
1080 vmm_ivt = kvm_vmm_info->vmm_ivt;
1081
1082 printk(KERN_DEBUG "kvm: vcpu:%p,ivt: 0x%lx\n", vcpu, vmm_ivt);
1083
1084 ret = ia64_pal_vp_create((u64 *)vpd, (u64 *)vmm_ivt, 0);
1085
1086 if (ret) {
1087 printk(KERN_ERR"kvm: ia64_pal_vp_create failed!\n");
1088 return -EINVAL;
1089 }
1090 return 0;
1091}
1092
1093static void init_ptce_info(struct kvm_vcpu *vcpu)
1094{
1095 ia64_ptce_info_t ptce = {0};
1096
1097 ia64_get_ptce(&ptce);
1098 vcpu->arch.ptce_base = ptce.base;
1099 vcpu->arch.ptce_count[0] = ptce.count[0];
1100 vcpu->arch.ptce_count[1] = ptce.count[1];
1101 vcpu->arch.ptce_stride[0] = ptce.stride[0];
1102 vcpu->arch.ptce_stride[1] = ptce.stride[1];
1103}
1104
1105static void kvm_migrate_hlt_timer(struct kvm_vcpu *vcpu)
1106{
1107 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
1108
1109 if (hrtimer_cancel(p_ht))
18dd36af 1110 hrtimer_start_expires(p_ht, HRTIMER_MODE_ABS);
b024b793
XZ		 1111}
1112
1113static enum hrtimer_restart hlt_timer_fn(struct hrtimer *data)
1114{
1115 struct kvm_vcpu *vcpu;
1116 wait_queue_head_t *q;
1117
1118 vcpu = container_of(data, struct kvm_vcpu, arch.hlt_timer);
decc9016
XZ		 1119 q = &vcpu->wq;
1120
a4535290 1121 if (vcpu->arch.mp_state != KVM_MP_STATE_HALTED)
b024b793
XZ		 1122 goto out;
1123
decc9016 1124 if (waitqueue_active(q))
b024b793 1125 wake_up_interruptible(q);
decc9016 1126
b024b793 1127out:
decc9016 1128 vcpu->arch.timer_fired = 1;
b024b793
XZ		 1129 vcpu->arch.timer_check = 1;
1130 return HRTIMER_NORESTART;
1131}
1132
1133#define PALE_RESET_ENTRY 0x80000000ffffffb0UL
1134
1135int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
1136{
1137 struct kvm_vcpu *v;
1138 int r;
1139 int i;
1140 long itc_offset;
1141 struct kvm *kvm = vcpu->kvm;
1142 struct kvm_pt_regs *regs = vcpu_regs(vcpu);
1143
1144 union context *p_ctx = &vcpu->arch.guest;
1145 struct kvm_vcpu *vmm_vcpu = to_guest(vcpu->kvm, vcpu);
1146
1147 /*Init vcpu context for first run.*/
1148 if (IS_ERR(vmm_vcpu))
1149 return PTR_ERR(vmm_vcpu);
1150
1151 if (vcpu->vcpu_id == 0) {
a4535290 1152 vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
b024b793
XZ		 1153
1154 /*Set entry address for first run.*/
1155 regs->cr_iip = PALE_RESET_ENTRY;
1156
a917f7af 1157 /*Initialize itc offset for vcpus*/
b024b793 1158 itc_offset = 0UL - ia64_getreg(_IA64_REG_AR_ITC);
934d534f 1159 for (i = 0; i < kvm->arch.online_vcpus; i++) {
a917f7af
XZ		 1160 v = (struct kvm_vcpu *)((char *)vcpu +
1161 sizeof(struct kvm_vcpu_data) * i);
b024b793
XZ		 1162 v->arch.itc_offset = itc_offset;
1163 v->arch.last_itc = 0;
1164 }
1165 } else
a4535290 1166 vcpu->arch.mp_state = KVM_MP_STATE_UNINITIALIZED;
b024b793
XZ		 1167
1168 r = -ENOMEM;
1169 vcpu->arch.apic = kzalloc(sizeof(struct kvm_lapic), GFP_KERNEL);
1170 if (!vcpu->arch.apic)
1171 goto out;
1172 vcpu->arch.apic->vcpu = vcpu;
1173
1174 p_ctx->gr[1] = 0;
a917f7af 1175 p_ctx->gr[12] = (unsigned long)((char *)vmm_vcpu + KVM_STK_OFFSET);
b024b793
XZ		 1176 p_ctx->gr[13] = (unsigned long)vmm_vcpu;
1177 p_ctx->psr = 0x1008522000UL;
1178 p_ctx->ar[40] = FPSR_DEFAULT; /*fpsr*/
1179 p_ctx->caller_unat = 0;
1180 p_ctx->pr = 0x0;
1181 p_ctx->ar[36] = 0x0; /*unat*/
1182 p_ctx->ar[19] = 0x0; /*rnat*/
1183 p_ctx->ar[18] = (unsigned long)vmm_vcpu +
1184 ((sizeof(struct kvm_vcpu)+15) & ~15);
1185 p_ctx->ar[64] = 0x0; /*pfs*/
1186 p_ctx->cr[0] = 0x7e04UL;
1187 p_ctx->cr[2] = (unsigned long)kvm_vmm_info->vmm_ivt;
1188 p_ctx->cr[8] = 0x3c;
1189
1190 /*Initilize region register*/
1191 p_ctx->rr[0] = 0x30;
1192 p_ctx->rr[1] = 0x30;
1193 p_ctx->rr[2] = 0x30;
1194 p_ctx->rr[3] = 0x30;
1195 p_ctx->rr[4] = 0x30;
1196 p_ctx->rr[5] = 0x30;
1197 p_ctx->rr[7] = 0x30;
1198
1199 /*Initilize branch register 0*/
1200 p_ctx->br[0] = *(unsigned long *)kvm_vmm_info->vmm_entry;
1201
1202 vcpu->arch.vmm_rr = kvm->arch.vmm_init_rr;
1203 vcpu->arch.metaphysical_rr0 = kvm->arch.metaphysical_rr0;
1204 vcpu->arch.metaphysical_rr4 = kvm->arch.metaphysical_rr4;
1205
1206 hrtimer_init(&vcpu->arch.hlt_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
1207 vcpu->arch.hlt_timer.function = hlt_timer_fn;
1208
1209 vcpu->arch.last_run_cpu = -1;
a917f7af 1210 vcpu->arch.vpd = (struct vpd *)VPD_BASE(vcpu->vcpu_id);
b024b793
XZ		 1211 vcpu->arch.vsa_base = kvm_vsa_base;
1212 vcpu->arch.__gp = kvm_vmm_gp;
1213 vcpu->arch.dirty_log_lock_pa = __pa(&kvm->arch.dirty_log_lock);
a917f7af
XZ		 1214 vcpu->arch.vhpt.hash = (struct thash_data *)VHPT_BASE(vcpu->vcpu_id);
1215 vcpu->arch.vtlb.hash = (struct thash_data *)VTLB_BASE(vcpu->vcpu_id);
b024b793
XZ		 1216 init_ptce_info(vcpu);
1217
1218 r = 0;
1219out:
1220 return r;
1221}
1222
1223static int vti_vcpu_setup(struct kvm_vcpu *vcpu, int id)
1224{
1225 unsigned long psr;
1226 int r;
1227
1228 local_irq_save(psr);
1229 r = kvm_insert_vmm_mapping(vcpu);
1230 if (r)
1231 goto fail;
1232 r = kvm_vcpu_init(vcpu, vcpu->kvm, id);
1233 if (r)
1234 goto fail;
1235
1236 r = vti_init_vpd(vcpu);
1237 if (r) {
1238 printk(KERN_DEBUG"kvm: vpd init error!!\n");
1239 goto uninit;
1240 }
1241
1242 r = vti_create_vp(vcpu);
1243 if (r)
1244 goto uninit;
1245
1246 kvm_purge_vmm_mapping(vcpu);
1247 local_irq_restore(psr);
1248
1249 return 0;
1250uninit:
1251 kvm_vcpu_uninit(vcpu);
1252fail:
cab7a1ee 1253 local_irq_restore(psr);
b024b793
XZ		 1254 return r;
1255}
1256
1257struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
1258 unsigned int id)
1259{
1260 struct kvm_vcpu *vcpu;
1261 unsigned long vm_base = kvm->arch.vm_base;
1262 int r;
1263 int cpu;
1264
a917f7af
XZ		 1265 BUG_ON(sizeof(struct kvm_vcpu) > VCPU_STRUCT_SIZE/2);
1266
1267 r = -EINVAL;
1268 if (id >= KVM_MAX_VCPUS) {
1269 printk(KERN_ERR"kvm: Can't configure vcpus > %ld",
1270 KVM_MAX_VCPUS);
1271 goto fail;
1272 }
1273
b024b793
XZ		 1274 r = -ENOMEM;
1275 if (!vm_base) {
1276 printk(KERN_ERR"kvm: Create vcpu[%d] error!\n", id);
1277 goto fail;
1278 }
a917f7af
XZ		 1279 vcpu = (struct kvm_vcpu *)(vm_base + offsetof(struct kvm_vm_data,
1280 vcpu_data[id].vcpu_struct));
b024b793
XZ		 1281 vcpu->kvm = kvm;
1282
1283 cpu = get_cpu();
1284 vti_vcpu_load(vcpu, cpu);
1285 r = vti_vcpu_setup(vcpu, id);
1286 put_cpu();
1287
1288 if (r) {
1289 printk(KERN_DEBUG"kvm: vcpu_setup error!!\n");
1290 goto fail;
1291 }
1292
934d534f
JS		 1293 kvm->arch.online_vcpus++;
1294
b024b793
XZ		 1295 return vcpu;
1296fail:
1297 return ERR_PTR(r);
1298}
1299
1300int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
1301{
1302 return 0;
1303}
1304
1305int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1306{
1307 return -EINVAL;
1308}
1309
1310int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1311{
1312 return -EINVAL;
1313}
1314
d0bfb940
JK		 1315int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
1316 struct kvm_guest_debug *dbg)
b024b793
XZ		 1317{
1318 return -EINVAL;
1319}
1320
1321static void free_kvm(struct kvm *kvm)
1322{
1323 unsigned long vm_base = kvm->arch.vm_base;
1324
1325 if (vm_base) {
1326 memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
1327 free_pages(vm_base, get_order(KVM_VM_DATA_SIZE));
1328 }
1329
1330}
1331
1332static void kvm_release_vm_pages(struct kvm *kvm)
1333{
1334 struct kvm_memory_slot *memslot;
1335 int i, j;
1336 unsigned long base_gfn;
1337
1338 for (i = 0; i < kvm->nmemslots; i++) {
1339 memslot = &kvm->memslots[i];
1340 base_gfn = memslot->base_gfn;
1341
1342 for (j = 0; j < memslot->npages; j++) {
1343 if (memslot->rmap[j])
1344 put_page((struct page *)memslot->rmap[j]);
1345 }
1346 }
1347}
1348
ad8ba2cd
SY		 1349void kvm_arch_sync_events(struct kvm *kvm)
1350{
1351}
1352
b024b793
XZ		 1353void kvm_arch_destroy_vm(struct kvm *kvm)
1354{
2381ad24
XZ		 1355 kvm_iommu_unmap_guest(kvm);
1356#ifdef KVM_CAP_DEVICE_ASSIGNMENT
1357 kvm_free_all_assigned_devices(kvm);
1358#endif
b024b793
XZ		 1359 kfree(kvm->arch.vioapic);
1360 kvm_release_vm_pages(kvm);
1361 kvm_free_physmem(kvm);
1362 free_kvm(kvm);
1363}
1364
1365void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
1366{
1367}
1368
1369void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
1370{
1371 if (cpu != vcpu->cpu) {
1372 vcpu->cpu = cpu;
1373 if (vcpu->arch.ht_active)
1374 kvm_migrate_hlt_timer(vcpu);
1375 }
1376}
1377
1378#define SAVE_REGS(_x) regs->_x = vcpu->arch._x
1379
1380int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1381{
b024b793 1382 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
042b26ed
JS		 1383 int i;
1384
b024b793
XZ		 1385 vcpu_load(vcpu);
1386
1387 for (i = 0; i < 16; i++) {
1388 regs->vpd.vgr[i] = vpd->vgr[i];
1389 regs->vpd.vbgr[i] = vpd->vbgr[i];
1390 }
1391 for (i = 0; i < 128; i++)
1392 regs->vpd.vcr[i] = vpd->vcr[i];
1393 regs->vpd.vhpi = vpd->vhpi;
1394 regs->vpd.vnat = vpd->vnat;
1395 regs->vpd.vbnat = vpd->vbnat;
1396 regs->vpd.vpsr = vpd->vpsr;
1397 regs->vpd.vpr = vpd->vpr;
1398
042b26ed
JS		 1399 memcpy(&regs->saved_guest, &vcpu->arch.guest, sizeof(union context));
1400
b024b793
XZ		 1401 SAVE_REGS(mp_state);
1402 SAVE_REGS(vmm_rr);
1403 memcpy(regs->itrs, vcpu->arch.itrs, sizeof(struct thash_data) * NITRS);
1404 memcpy(regs->dtrs, vcpu->arch.dtrs, sizeof(struct thash_data) * NDTRS);
1405 SAVE_REGS(itr_regions);
1406 SAVE_REGS(dtr_regions);
1407 SAVE_REGS(tc_regions);
1408 SAVE_REGS(irq_check);
1409 SAVE_REGS(itc_check);
1410 SAVE_REGS(timer_check);
1411 SAVE_REGS(timer_pending);
1412 SAVE_REGS(last_itc);
1413 for (i = 0; i < 8; i++) {
1414 regs->vrr[i] = vcpu->arch.vrr[i];
1415 regs->ibr[i] = vcpu->arch.ibr[i];
1416 regs->dbr[i] = vcpu->arch.dbr[i];
1417 }
1418 for (i = 0; i < 4; i++)
1419 regs->insvc[i] = vcpu->arch.insvc[i];
1420 regs->saved_itc = vcpu->arch.itc_offset + ia64_getreg(_IA64_REG_AR_ITC);
1421 SAVE_REGS(xtp);
1422 SAVE_REGS(metaphysical_rr0);
1423 SAVE_REGS(metaphysical_rr4);
1424 SAVE_REGS(metaphysical_saved_rr0);
1425 SAVE_REGS(metaphysical_saved_rr4);
1426 SAVE_REGS(fp_psr);
1427 SAVE_REGS(saved_gp);
042b26ed 1428
b024b793 1429 vcpu_put(vcpu);
042b26ed 1430 return 0;
b024b793
XZ		 1431}
1432
e9a999fe
JS		 1433int kvm_arch_vcpu_ioctl_get_stack(struct kvm_vcpu *vcpu,
1434 struct kvm_ia64_vcpu_stack *stack)
1435{
1436 memcpy(stack, vcpu, sizeof(struct kvm_ia64_vcpu_stack));
1437 return 0;
1438}
1439
1440int kvm_arch_vcpu_ioctl_set_stack(struct kvm_vcpu *vcpu,
1441 struct kvm_ia64_vcpu_stack *stack)
1442{
1443 memcpy(vcpu + 1, &stack->stack[0] + sizeof(struct kvm_vcpu),
1444 sizeof(struct kvm_ia64_vcpu_stack) - sizeof(struct kvm_vcpu));
1445
1446 vcpu->arch.exit_data = ((struct kvm_vcpu *)stack)->arch.exit_data;
1447 return 0;
1448}
1449
b024b793
XZ		 1450void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
1451{
1452
1453 hrtimer_cancel(&vcpu->arch.hlt_timer);
1454 kfree(vcpu->arch.apic);
1455}
1456
1457
1458long kvm_arch_vcpu_ioctl(struct file *filp,
e9a999fe 1459 unsigned int ioctl, unsigned long arg)
b024b793 1460{
e9a999fe
JS		 1461 struct kvm_vcpu *vcpu = filp->private_data;
1462 void __user *argp = (void __user *)arg;
1463 struct kvm_ia64_vcpu_stack *stack = NULL;
1464 long r;
1465
1466 switch (ioctl) {
1467 case KVM_IA64_VCPU_GET_STACK: {
1468 struct kvm_ia64_vcpu_stack __user *user_stack;
1469 void __user *first_p = argp;
1470
1471 r = -EFAULT;
1472 if (copy_from_user(&user_stack, first_p, sizeof(void *)))
1473 goto out;
1474
1475 if (!access_ok(VERIFY_WRITE, user_stack,
1476 sizeof(struct kvm_ia64_vcpu_stack))) {
1477 printk(KERN_INFO "KVM_IA64_VCPU_GET_STACK: "
1478 "Illegal user destination address for stack\n");
1479 goto out;
1480 }
1481 stack = kzalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL);
1482 if (!stack) {
1483 r = -ENOMEM;
1484 goto out;
1485 }
1486
1487 r = kvm_arch_vcpu_ioctl_get_stack(vcpu, stack);
1488 if (r)
1489 goto out;
1490
1491 if (copy_to_user(user_stack, stack,
1492 sizeof(struct kvm_ia64_vcpu_stack)))
1493 goto out;
1494
1495 break;
1496 }
1497 case KVM_IA64_VCPU_SET_STACK: {
1498 struct kvm_ia64_vcpu_stack __user *user_stack;
1499 void __user *first_p = argp;
1500
1501 r = -EFAULT;
1502 if (copy_from_user(&user_stack, first_p, sizeof(void *)))
1503 goto out;
1504
1505 if (!access_ok(VERIFY_READ, user_stack,
1506 sizeof(struct kvm_ia64_vcpu_stack))) {
1507 printk(KERN_INFO "KVM_IA64_VCPU_SET_STACK: "
1508 "Illegal user address for stack\n");
1509 goto out;
1510 }
1511 stack = kmalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL);
1512 if (!stack) {
1513 r = -ENOMEM;
1514 goto out;
1515 }
1516 if (copy_from_user(stack, user_stack,
1517 sizeof(struct kvm_ia64_vcpu_stack)))
1518 goto out;
1519
1520 r = kvm_arch_vcpu_ioctl_set_stack(vcpu, stack);
1521 break;
1522 }
1523
1524 default:
1525 r = -EINVAL;
1526 }
1527
1528out:
1529 kfree(stack);
1530 return r;
b024b793
XZ		 1531}
1532
1533int kvm_arch_set_memory_region(struct kvm *kvm,
1534 struct kvm_userspace_memory_region *mem,
1535 struct kvm_memory_slot old,
1536 int user_alloc)
1537{
1538 unsigned long i;
1cbea809 1539 unsigned long pfn;
b024b793
XZ		 1540 int npages = mem->memory_size >> PAGE_SHIFT;
1541 struct kvm_memory_slot *memslot = &kvm->memslots[mem->slot];
1542 unsigned long base_gfn = memslot->base_gfn;
1543
a917f7af
XZ		 1544 if (base_gfn + npages > (KVM_MAX_MEM_SIZE >> PAGE_SHIFT))
1545 return -ENOMEM;
1546
b024b793 1547 for (i = 0; i < npages; i++) {
1cbea809
XZ		 1548 pfn = gfn_to_pfn(kvm, base_gfn + i);
1549 if (!kvm_is_mmio_pfn(pfn)) {
1550 kvm_set_pmt_entry(kvm, base_gfn + i,
1551 pfn << PAGE_SHIFT,
b010eb51 1552 _PAGE_AR_RWX | _PAGE_MA_WB);
1cbea809
XZ		 1553 memslot->rmap[i] = (unsigned long)pfn_to_page(pfn);
1554 } else {
1555 kvm_set_pmt_entry(kvm, base_gfn + i,
b010eb51 1556 GPFN_PHYS_MMIO | (pfn << PAGE_SHIFT),
1cbea809
XZ		 1557 _PAGE_MA_UC);
1558 memslot->rmap[i] = 0;
1559 }
b024b793
XZ		 1560 }
1561
1562 return 0;
1563}
1564
34d4cb8f
MT		 1565void kvm_arch_flush_shadow(struct kvm *kvm)
1566{
1567}
b024b793
XZ		 1568
1569long kvm_arch_dev_ioctl(struct file *filp,
e9a999fe 1570 unsigned int ioctl, unsigned long arg)
b024b793
XZ		 1571{
1572 return -EINVAL;
1573}
1574
1575void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
1576{
1577 kvm_vcpu_uninit(vcpu);
1578}
1579
1580static int vti_cpu_has_kvm_support(void)
1581{
1582 long avail = 1, status = 1, control = 1;
1583 long ret;
1584
1585 ret = ia64_pal_proc_get_features(&avail, &status, &control, 0);
1586 if (ret)
1587 goto out;
1588
1589 if (!(avail & PAL_PROC_VM_BIT))
1590 goto out;
1591
1592 printk(KERN_DEBUG"kvm: Hardware Supports VT\n");
1593
1594 ret = ia64_pal_vp_env_info(&kvm_vm_buffer_size, &vp_env_info);
1595 if (ret)
1596 goto out;
1597 printk(KERN_DEBUG"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size);
1598
1599 if (!(vp_env_info & VP_OPCODE)) {
1600 printk(KERN_WARNING"kvm: No opcode ability on hardware, "
1601 "vm_env_info:0x%lx\n", vp_env_info);
1602 }
1603
1604 return 1;
1605out:
1606 return 0;
1607}
1608
1609static int kvm_relocate_vmm(struct kvm_vmm_info *vmm_info,
1610 struct module *module)
1611{
1612 unsigned long module_base;
1613 unsigned long vmm_size;
1614
1615 unsigned long vmm_offset, func_offset, fdesc_offset;
1616 struct fdesc *p_fdesc;
1617
1618 BUG_ON(!module);
1619
1620 if (!kvm_vmm_base) {
1621 printk("kvm: kvm area hasn't been initilized yet!!\n");
1622 return -EFAULT;
1623 }
1624
1625 /*Calculate new position of relocated vmm module.*/
1626 module_base = (unsigned long)module->module_core;
1627 vmm_size = module->core_size;
1628 if (unlikely(vmm_size > KVM_VMM_SIZE))
1629 return -EFAULT;
1630
1631 memcpy((void *)kvm_vmm_base, (void *)module_base, vmm_size);
1632 kvm_flush_icache(kvm_vmm_base, vmm_size);
1633
1634 /*Recalculate kvm_vmm_info based on new VMM*/
1635 vmm_offset = vmm_info->vmm_ivt - module_base;
1636 kvm_vmm_info->vmm_ivt = KVM_VMM_BASE + vmm_offset;
1637 printk(KERN_DEBUG"kvm: Relocated VMM's IVT Base Addr:%lx\n",
1638 kvm_vmm_info->vmm_ivt);
1639
1640 fdesc_offset = (unsigned long)vmm_info->vmm_entry - module_base;
1641 kvm_vmm_info->vmm_entry = (kvm_vmm_entry *)(KVM_VMM_BASE +
1642 fdesc_offset);
1643 func_offset = *(unsigned long *)vmm_info->vmm_entry - module_base;
1644 p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset);
1645 p_fdesc->ip = KVM_VMM_BASE + func_offset;
1646 p_fdesc->gp = KVM_VMM_BASE+(p_fdesc->gp - module_base);
1647
1648 printk(KERN_DEBUG"kvm: Relocated VMM's Init Entry Addr:%lx\n",
1649 KVM_VMM_BASE+func_offset);
1650
1651 fdesc_offset = (unsigned long)vmm_info->tramp_entry - module_base;
1652 kvm_vmm_info->tramp_entry = (kvm_tramp_entry *)(KVM_VMM_BASE +
1653 fdesc_offset);
1654 func_offset = *(unsigned long *)vmm_info->tramp_entry - module_base;
1655 p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset);
1656 p_fdesc->ip = KVM_VMM_BASE + func_offset;
1657 p_fdesc->gp = KVM_VMM_BASE + (p_fdesc->gp - module_base);
1658
1659 kvm_vmm_gp = p_fdesc->gp;
1660
1661 printk(KERN_DEBUG"kvm: Relocated VMM's Entry IP:%p\n",
1662 kvm_vmm_info->vmm_entry);
1663 printk(KERN_DEBUG"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n",
1664 KVM_VMM_BASE + func_offset);
1665
1666 return 0;
1667}
1668
1669int kvm_arch_init(void *opaque)
1670{
1671 int r;
1672 struct kvm_vmm_info *vmm_info = (struct kvm_vmm_info *)opaque;
1673
1674 if (!vti_cpu_has_kvm_support()) {
1675 printk(KERN_ERR "kvm: No Hardware Virtualization Support!\n");
1676 r = -EOPNOTSUPP;
1677 goto out;
1678 }
1679
1680 if (kvm_vmm_info) {
1681 printk(KERN_ERR "kvm: Already loaded VMM module!\n");
1682 r = -EEXIST;
1683 goto out;
1684 }
1685
1686 r = -ENOMEM;
1687 kvm_vmm_info = kzalloc(sizeof(struct kvm_vmm_info), GFP_KERNEL);
1688 if (!kvm_vmm_info)
1689 goto out;
1690
1691 if (kvm_alloc_vmm_area())
1692 goto out_free0;
1693
1694 r = kvm_relocate_vmm(vmm_info, vmm_info->module);
1695 if (r)
1696 goto out_free1;
1697
1698 return 0;
1699
1700out_free1:
1701 kvm_free_vmm_area();
1702out_free0:
1703 kfree(kvm_vmm_info);
1704out:
1705 return r;
1706}
1707
1708void kvm_arch_exit(void)
1709{
1710 kvm_free_vmm_area();
1711 kfree(kvm_vmm_info);
1712 kvm_vmm_info = NULL;
1713}
1714
1715static int kvm_ia64_sync_dirty_log(struct kvm *kvm,
1716 struct kvm_dirty_log *log)
1717{
1718 struct kvm_memory_slot *memslot;
1719 int r, i;
1720 long n, base;
a917f7af
XZ		 1721 unsigned long *dirty_bitmap = (unsigned long *)(kvm->arch.vm_base +
1722 offsetof(struct kvm_vm_data, kvm_mem_dirty_log));
b024b793
XZ		 1723
1724 r = -EINVAL;
1725 if (log->slot >= KVM_MEMORY_SLOTS)
1726 goto out;
1727
1728 memslot = &kvm->memslots[log->slot];
1729 r = -ENOENT;
1730 if (!memslot->dirty_bitmap)
1731 goto out;
1732
1733 n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
1734 base = memslot->base_gfn / BITS_PER_LONG;
1735
1736 for (i = 0; i < n/sizeof(long); ++i) {
1737 memslot->dirty_bitmap[i] = dirty_bitmap[base + i];
1738 dirty_bitmap[base + i] = 0;
1739 }
1740 r = 0;
1741out:
1742 return r;
1743}
1744
1745int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
1746 struct kvm_dirty_log *log)
1747{
1748 int r;
1749 int n;
1750 struct kvm_memory_slot *memslot;
1751 int is_dirty = 0;
1752
1753 spin_lock(&kvm->arch.dirty_log_lock);
1754
1755 r = kvm_ia64_sync_dirty_log(kvm, log);
1756 if (r)
1757 goto out;
1758
1759 r = kvm_get_dirty_log(kvm, log, &is_dirty);
1760 if (r)
1761 goto out;
1762
1763 /* If nothing is dirty, don't bother messing with page tables. */
1764 if (is_dirty) {
1765 kvm_flush_remote_tlbs(kvm);
1766 memslot = &kvm->memslots[log->slot];
1767 n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
1768 memset(memslot->dirty_bitmap, 0, n);
1769 }
1770 r = 0;
1771out:
1772 spin_unlock(&kvm->arch.dirty_log_lock);
1773 return r;
1774}
1775
1776int kvm_arch_hardware_setup(void)
1777{
1778 return 0;
1779}
1780
1781void kvm_arch_hardware_unsetup(void)
1782{
1783}
1784
1785static void vcpu_kick_intr(void *info)
1786{
1787#ifdef DEBUG
1788 struct kvm_vcpu *vcpu = (struct kvm_vcpu *)info;
1789 printk(KERN_DEBUG"vcpu_kick_intr %p \n", vcpu);
1790#endif
1791}
1792
1793void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
1794{
1795 int ipi_pcpu = vcpu->cpu;
decc9016 1796 int cpu = get_cpu();
b024b793
XZ		 1797
1798 if (waitqueue_active(&vcpu->wq))
1799 wake_up_interruptible(&vcpu->wq);
1800
decc9016 1801 if (vcpu->guest_mode && cpu != ipi_pcpu)
2f73ccab 1802 smp_call_function_single(ipi_pcpu, vcpu_kick_intr, vcpu, 0);
decc9016 1803 put_cpu();
b024b793
XZ		 1804}
1805
1806int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 trig)
1807{
1808
1809 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1810
1811 if (!test_and_set_bit(vec, &vpd->irr[0])) {
1812 vcpu->arch.irq_new_pending = 1;
decc9016 1813 kvm_vcpu_kick(vcpu);
b024b793
XZ		 1814 return 1;
1815 }
1816 return 0;
1817}
1818
1819int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest)
1820{
1821 return apic->vcpu->vcpu_id == dest;
1822}
1823
1824int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda)
1825{
1826 return 0;
1827}
1828
1829struct kvm_vcpu *kvm_get_lowest_prio_vcpu(struct kvm *kvm, u8 vector,
1830 unsigned long bitmap)
1831{
1832 struct kvm_vcpu *lvcpu = kvm->vcpus[0];
1833 int i;
1834
934d534f 1835 for (i = 1; i < kvm->arch.online_vcpus; i++) {
b024b793
XZ		 1836 if (!kvm->vcpus[i])
1837 continue;
1838 if (lvcpu->arch.xtp > kvm->vcpus[i]->arch.xtp)
1839 lvcpu = kvm->vcpus[i];
1840 }
1841
1842 return lvcpu;
1843}
1844
1845static int find_highest_bits(int *dat)
1846{
1847 u32 bits, bitnum;
1848 int i;
1849
1850 /* loop for all 256 bits */
1851 for (i = 7; i >= 0 ; i--) {
1852 bits = dat[i];
1853 if (bits) {
1854 bitnum = fls(bits);
1855 return i * 32 + bitnum - 1;
1856 }
1857 }
1858
1859 return -1;
1860}
1861
1862int kvm_highest_pending_irq(struct kvm_vcpu *vcpu)
1863{
1864 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1865
1866 if (vpd->irr[0] & (1UL << NMI_VECTOR))
1867 return NMI_VECTOR;
1868 if (vpd->irr[0] & (1UL << ExtINT_VECTOR))
1869 return ExtINT_VECTOR;
1870
1871 return find_highest_bits((int *)&vpd->irr[0]);
1872}
1873
1874int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu)
1875{
1876 if (kvm_highest_pending_irq(vcpu) != -1)
1877 return 1;
1878 return 0;
1879}
1880
3d80840d
MT		 1881int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
1882{
decc9016 1883 return vcpu->arch.timer_fired;
3d80840d
MT		 1884}
1885
b024b793
XZ		 1886gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn)
1887{
1888 return gfn;
1889}
1890
1891int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
1892{
a4535290 1893 return vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE;
b024b793 1894}
62d9f0db
MT		 1895
1896int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
1897 struct kvm_mp_state *mp_state)
1898{
8c4b537d
XZ		 1899 vcpu_load(vcpu);
1900 mp_state->mp_state = vcpu->arch.mp_state;
1901 vcpu_put(vcpu);
1902 return 0;
1903}
1904
1905static int vcpu_reset(struct kvm_vcpu *vcpu)
1906{
1907 int r;
1908 long psr;
1909 local_irq_save(psr);
1910 r = kvm_insert_vmm_mapping(vcpu);
1911 if (r)
1912 goto fail;
1913
1914 vcpu->arch.launched = 0;
1915 kvm_arch_vcpu_uninit(vcpu);
1916 r = kvm_arch_vcpu_init(vcpu);
1917 if (r)
1918 goto fail;
1919
1920 kvm_purge_vmm_mapping(vcpu);
1921 r = 0;
1922fail:
1923 local_irq_restore(psr);
1924 return r;
62d9f0db
MT		 1925}
1926
1927int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
1928 struct kvm_mp_state *mp_state)
1929{
8c4b537d
XZ		 1930 int r = 0;
1931
1932 vcpu_load(vcpu);
1933 vcpu->arch.mp_state = mp_state->mp_state;
1934 if (vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)
1935 r = vcpu_reset(vcpu);
1936 vcpu_put(vcpu);
1937 return r;
62d9f0db 1938}
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