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KVM: Break dependency between vcpu index in vcpus array and vcpu_id.
[deliverable/linux.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>
0c72ea7f
JS		 44#include <asm/sn/addrs.h>
45#include <asm/sn/clksupport.h>
46#include <asm/sn/shub_mmr.h>
b024b793
XZ		 47
48#include "misc.h"
49#include "vti.h"
50#include "iodev.h"
51#include "ioapic.h"
52#include "lapic.h"
2f749771 53#include "irq.h"
b024b793
XZ		 54
55static unsigned long kvm_vmm_base;
56static unsigned long kvm_vsa_base;
57static unsigned long kvm_vm_buffer;
58static unsigned long kvm_vm_buffer_size;
59unsigned long kvm_vmm_gp;
60
61static long vp_env_info;
62
63static struct kvm_vmm_info *kvm_vmm_info;
64
65static DEFINE_PER_CPU(struct kvm_vcpu *, last_vcpu);
66
67struct kvm_stats_debugfs_item debugfs_entries[] = {
68 { NULL }
69};
70
c6c9fcdf
JS		 71static unsigned long kvm_get_itc(struct kvm_vcpu *vcpu)
72{
73#if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
74 if (vcpu->kvm->arch.is_sn2)
75 return rtc_time();
76 else
77#endif
78 return ia64_getreg(_IA64_REG_AR_ITC);
79}
80
b024b793
XZ		 81static void kvm_flush_icache(unsigned long start, unsigned long len)
82{
83 int l;
84
85 for (l = 0; l < (len + 32); l += 32)
7120569c 86 ia64_fc((void *)(start + l));
b024b793
XZ		 87
88 ia64_sync_i();
89 ia64_srlz_i();
90}
91
92static void kvm_flush_tlb_all(void)
93{
94 unsigned long i, j, count0, count1, stride0, stride1, addr;
95 long flags;
96
97 addr = local_cpu_data->ptce_base;
98 count0 = local_cpu_data->ptce_count[0];
99 count1 = local_cpu_data->ptce_count[1];
100 stride0 = local_cpu_data->ptce_stride[0];
101 stride1 = local_cpu_data->ptce_stride[1];
102
103 local_irq_save(flags);
104 for (i = 0; i < count0; ++i) {
105 for (j = 0; j < count1; ++j) {
106 ia64_ptce(addr);
107 addr += stride1;
108 }
109 addr += stride0;
110 }
111 local_irq_restore(flags);
112 ia64_srlz_i(); /* srlz.i implies srlz.d */
113}
114
115long ia64_pal_vp_create(u64 *vpd, u64 *host_iva, u64 *opt_handler)
116{
117 struct ia64_pal_retval iprv;
118
119 PAL_CALL_STK(iprv, PAL_VP_CREATE, (u64)vpd, (u64)host_iva,
120 (u64)opt_handler);
121
122 return iprv.status;
123}
124
125static DEFINE_SPINLOCK(vp_lock);
126
127void kvm_arch_hardware_enable(void *garbage)
128{
129 long status;
130 long tmp_base;
131 unsigned long pte;
132 unsigned long saved_psr;
133 int slot;
134
0c72ea7f 135 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL));
b024b793
XZ		 136 local_irq_save(saved_psr);
137 slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
cab7a1ee 138 local_irq_restore(saved_psr);
b024b793
XZ		 139 if (slot < 0)
140 return;
b024b793
XZ		 141
142 spin_lock(&vp_lock);
143 status = ia64_pal_vp_init_env(kvm_vsa_base ?
144 VP_INIT_ENV : VP_INIT_ENV_INITALIZE,
145 __pa(kvm_vm_buffer), KVM_VM_BUFFER_BASE, &tmp_base);
146 if (status != 0) {
147 printk(KERN_WARNING"kvm: Failed to Enable VT Support!!!!\n");
148 return ;
149 }
150
151 if (!kvm_vsa_base) {
152 kvm_vsa_base = tmp_base;
153 printk(KERN_INFO"kvm: kvm_vsa_base:0x%lx\n", kvm_vsa_base);
154 }
155 spin_unlock(&vp_lock);
156 ia64_ptr_entry(0x3, slot);
157}
158
159void kvm_arch_hardware_disable(void *garbage)
160{
161
162 long status;
163 int slot;
164 unsigned long pte;
165 unsigned long saved_psr;
166 unsigned long host_iva = ia64_getreg(_IA64_REG_CR_IVA);
167
168 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base),
169 PAGE_KERNEL));
170
171 local_irq_save(saved_psr);
172 slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
cab7a1ee 173 local_irq_restore(saved_psr);
b024b793
XZ		 174 if (slot < 0)
175 return;
b024b793
XZ		 176
177 status = ia64_pal_vp_exit_env(host_iva);
178 if (status)
179 printk(KERN_DEBUG"kvm: Failed to disable VT support! :%ld\n",
180 status);
181 ia64_ptr_entry(0x3, slot);
182}
183
184void kvm_arch_check_processor_compat(void *rtn)
185{
186 *(int *)rtn = 0;
187}
188
189int kvm_dev_ioctl_check_extension(long ext)
190{
191
192 int r;
193
194 switch (ext) {
195 case KVM_CAP_IRQCHIP:
8c4b537d 196 case KVM_CAP_MP_STATE:
4925663a 197 case KVM_CAP_IRQ_INJECT_STATUS:
b024b793
XZ		 198 r = 1;
199 break;
7f39f8ac
LV		 200 case KVM_CAP_COALESCED_MMIO:
201 r = KVM_COALESCED_MMIO_PAGE_OFFSET;
202 break;
2381ad24 203 case KVM_CAP_IOMMU:
19de40a8 204 r = iommu_found();
2381ad24 205 break;
b024b793
XZ		 206 default:
207 r = 0;
208 }
209 return r;
210
211}
212
213static struct kvm_io_device *vcpu_find_mmio_dev(struct kvm_vcpu *vcpu,
92760499 214 gpa_t addr, int len, int is_write)
b024b793
XZ		 215{
216 struct kvm_io_device *dev;
217
92760499 218 dev = kvm_io_bus_find_dev(&vcpu->kvm->mmio_bus, addr, len, is_write);
b024b793
XZ		 219
220 return dev;
221}
222
223static int handle_vm_error(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
224{
225 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
226 kvm_run->hw.hardware_exit_reason = 1;
227 return 0;
228}
229
230static int handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
231{
232 struct kvm_mmio_req *p;
233 struct kvm_io_device *mmio_dev;
234
235 p = kvm_get_vcpu_ioreq(vcpu);
236
237 if ((p->addr & PAGE_MASK) == IOAPIC_DEFAULT_BASE_ADDRESS)
238 goto mmio;
239 vcpu->mmio_needed = 1;
240 vcpu->mmio_phys_addr = kvm_run->mmio.phys_addr = p->addr;
241 vcpu->mmio_size = kvm_run->mmio.len = p->size;
242 vcpu->mmio_is_write = kvm_run->mmio.is_write = !p->dir;
243
244 if (vcpu->mmio_is_write)
245 memcpy(vcpu->mmio_data, &p->data, p->size);
246 memcpy(kvm_run->mmio.data, &p->data, p->size);
247 kvm_run->exit_reason = KVM_EXIT_MMIO;
248 return 0;
249mmio:
92760499 250 mmio_dev = vcpu_find_mmio_dev(vcpu, p->addr, p->size, !p->dir);
b024b793
XZ		 251 if (mmio_dev) {
252 if (!p->dir)
253 kvm_iodevice_write(mmio_dev, p->addr, p->size,
254 &p->data);
255 else
256 kvm_iodevice_read(mmio_dev, p->addr, p->size,
257 &p->data);
258
259 } else
260 printk(KERN_ERR"kvm: No iodevice found! addr:%lx\n", p->addr);
261 p->state = STATE_IORESP_READY;
262
263 return 1;
264}
265
266static int handle_pal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
267{
268 struct exit_ctl_data *p;
269
270 p = kvm_get_exit_data(vcpu);
271
272 if (p->exit_reason == EXIT_REASON_PAL_CALL)
273 return kvm_pal_emul(vcpu, kvm_run);
274 else {
275 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
276 kvm_run->hw.hardware_exit_reason = 2;
277 return 0;
278 }
279}
280
281static int handle_sal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
282{
283 struct exit_ctl_data *p;
284
285 p = kvm_get_exit_data(vcpu);
286
287 if (p->exit_reason == EXIT_REASON_SAL_CALL) {
288 kvm_sal_emul(vcpu);
289 return 1;
290 } else {
291 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
292 kvm_run->hw.hardware_exit_reason = 3;
293 return 0;
294 }
295
296}
297
58c2dde1
GN		 298static int __apic_accept_irq(struct kvm_vcpu *vcpu, uint64_t vector)
299{
300 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
301
302 if (!test_and_set_bit(vector, &vpd->irr[0])) {
303 vcpu->arch.irq_new_pending = 1;
304 kvm_vcpu_kick(vcpu);
305 return 1;
306 }
307 return 0;
308}
309
b024b793
XZ		 310/*
311 * offset: address offset to IPI space.
312 * value: deliver value.
313 */
314static void vcpu_deliver_ipi(struct kvm_vcpu *vcpu, uint64_t dm,
315 uint64_t vector)
316{
317 switch (dm) {
318 case SAPIC_FIXED:
b024b793
XZ		 319 break;
320 case SAPIC_NMI:
58c2dde1 321 vector = 2;
b024b793
XZ		 322 break;
323 case SAPIC_EXTINT:
58c2dde1 324 vector = 0;
b024b793
XZ		 325 break;
326 case SAPIC_INIT:
327 case SAPIC_PMI:
328 default:
329 printk(KERN_ERR"kvm: Unimplemented Deliver reserved IPI!\n");
58c2dde1 330 return;
b024b793 331 }
58c2dde1 332 __apic_accept_irq(vcpu, vector);
b024b793
XZ		 333}
334
335static struct kvm_vcpu *lid_to_vcpu(struct kvm *kvm, unsigned long id,
336 unsigned long eid)
337{
338 union ia64_lid lid;
339 int i;
340
73880c80 341 for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) {
b024b793
XZ		 342 if (kvm->vcpus[i]) {
343 lid.val = VCPU_LID(kvm->vcpus[i]);
344 if (lid.id == id && lid.eid == eid)
345 return kvm->vcpus[i];
346 }
347 }
348
349 return NULL;
350}
351
352static int handle_ipi(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
353{
354 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
355 struct kvm_vcpu *target_vcpu;
356 struct kvm_pt_regs *regs;
357 union ia64_ipi_a addr = p->u.ipi_data.addr;
358 union ia64_ipi_d data = p->u.ipi_data.data;
359
360 target_vcpu = lid_to_vcpu(vcpu->kvm, addr.id, addr.eid);
361 if (!target_vcpu)
362 return handle_vm_error(vcpu, kvm_run);
363
364 if (!target_vcpu->arch.launched) {
365 regs = vcpu_regs(target_vcpu);
366
367 regs->cr_iip = vcpu->kvm->arch.rdv_sal_data.boot_ip;
368 regs->r1 = vcpu->kvm->arch.rdv_sal_data.boot_gp;
369
a4535290 370 target_vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
b024b793
XZ		 371 if (waitqueue_active(&target_vcpu->wq))
372 wake_up_interruptible(&target_vcpu->wq);
373 } else {
374 vcpu_deliver_ipi(target_vcpu, data.dm, data.vector);
375 if (target_vcpu != vcpu)
376 kvm_vcpu_kick(target_vcpu);
377 }
378
379 return 1;
380}
381
382struct call_data {
383 struct kvm_ptc_g ptc_g_data;
384 struct kvm_vcpu *vcpu;
385};
386
387static void vcpu_global_purge(void *info)
388{
389 struct call_data *p = (struct call_data *)info;
390 struct kvm_vcpu *vcpu = p->vcpu;
391
392 if (test_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests))
393 return;
394
395 set_bit(KVM_REQ_PTC_G, &vcpu->requests);
396 if (vcpu->arch.ptc_g_count < MAX_PTC_G_NUM) {
397 vcpu->arch.ptc_g_data[vcpu->arch.ptc_g_count++] =
398 p->ptc_g_data;
399 } else {
400 clear_bit(KVM_REQ_PTC_G, &vcpu->requests);
401 vcpu->arch.ptc_g_count = 0;
402 set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests);
403 }
404}
405
406static int handle_global_purge(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
407{
408 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
409 struct kvm *kvm = vcpu->kvm;
410 struct call_data call_data;
411 int i;
decc9016 412
b024b793
XZ		 413 call_data.ptc_g_data = p->u.ptc_g_data;
414
73880c80 415 for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) {
b024b793 416 if (!kvm->vcpus[i] || kvm->vcpus[i]->arch.mp_state ==
a4535290 417 KVM_MP_STATE_UNINITIALIZED ||
b024b793
XZ		 418 vcpu == kvm->vcpus[i])
419 continue;
420
421 if (waitqueue_active(&kvm->vcpus[i]->wq))
422 wake_up_interruptible(&kvm->vcpus[i]->wq);
423
424 if (kvm->vcpus[i]->cpu != -1) {
425 call_data.vcpu = kvm->vcpus[i];
426 smp_call_function_single(kvm->vcpus[i]->cpu,
2f73ccab 427 vcpu_global_purge, &call_data, 1);
b024b793
XZ		 428 } else
429 printk(KERN_WARNING"kvm: Uninit vcpu received ipi!\n");
430
431 }
432 return 1;
433}
434
435static int handle_switch_rr6(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
436{
437 return 1;
438}
439
0c72ea7f
JS		 440static int kvm_sn2_setup_mappings(struct kvm_vcpu *vcpu)
441{
442 unsigned long pte, rtc_phys_addr, map_addr;
443 int slot;
444
445 map_addr = KVM_VMM_BASE + (1UL << KVM_VMM_SHIFT);
446 rtc_phys_addr = LOCAL_MMR_OFFSET | SH_RTC;
447 pte = pte_val(mk_pte_phys(rtc_phys_addr, PAGE_KERNEL_UC));
448 slot = ia64_itr_entry(0x3, map_addr, pte, PAGE_SHIFT);
449 vcpu->arch.sn_rtc_tr_slot = slot;
450 if (slot < 0) {
451 printk(KERN_ERR "Mayday mayday! RTC mapping failed!\n");
452 slot = 0;
453 }
454 return slot;
455}
456
b024b793
XZ		 457int kvm_emulate_halt(struct kvm_vcpu *vcpu)
458{
459
460 ktime_t kt;
461 long itc_diff;
462 unsigned long vcpu_now_itc;
b024b793
XZ		 463 unsigned long expires;
464 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
465 unsigned long cyc_per_usec = local_cpu_data->cyc_per_usec;
466 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
467
decc9016 468 if (irqchip_in_kernel(vcpu->kvm)) {
b024b793 469
c6c9fcdf 470 vcpu_now_itc = kvm_get_itc(vcpu) + vcpu->arch.itc_offset;
b024b793 471
decc9016
XZ		 472 if (time_after(vcpu_now_itc, vpd->itm)) {
473 vcpu->arch.timer_check = 1;
474 return 1;
475 }
476 itc_diff = vpd->itm - vcpu_now_itc;
477 if (itc_diff < 0)
478 itc_diff = -itc_diff;
479
480 expires = div64_u64(itc_diff, cyc_per_usec);
481 kt = ktime_set(0, 1000 * expires);
482
decc9016
XZ		 483 vcpu->arch.ht_active = 1;
484 hrtimer_start(p_ht, kt, HRTIMER_MODE_ABS);
b024b793 485
a4535290 486 vcpu->arch.mp_state = KVM_MP_STATE_HALTED;
b024b793
XZ		 487 kvm_vcpu_block(vcpu);
488 hrtimer_cancel(p_ht);
489 vcpu->arch.ht_active = 0;
490
09cec754
GN		 491 if (test_and_clear_bit(KVM_REQ_UNHALT, &vcpu->requests) ||
492 kvm_cpu_has_pending_timer(vcpu))
decc9016 493 if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED)
09cec754 494 vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
decc9016 495
a4535290 496 if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE)
b024b793
XZ		 497 return -EINTR;
498 return 1;
499 } else {
500 printk(KERN_ERR"kvm: Unsupported userspace halt!");
501 return 0;
502 }
503}
504
505static int handle_vm_shutdown(struct kvm_vcpu *vcpu,
506 struct kvm_run *kvm_run)
507{
508 kvm_run->exit_reason = KVM_EXIT_SHUTDOWN;
509 return 0;
510}
511
512static int handle_external_interrupt(struct kvm_vcpu *vcpu,
513 struct kvm_run *kvm_run)
514{
515 return 1;
516}
517
7d637978
XZ		 518static int handle_vcpu_debug(struct kvm_vcpu *vcpu,
519 struct kvm_run *kvm_run)
520{
521 printk("VMM: %s", vcpu->arch.log_buf);
522 return 1;
523}
524
b024b793
XZ		 525static int (*kvm_vti_exit_handlers[])(struct kvm_vcpu *vcpu,
526 struct kvm_run *kvm_run) = {
527 [EXIT_REASON_VM_PANIC] = handle_vm_error,
528 [EXIT_REASON_MMIO_INSTRUCTION] = handle_mmio,
529 [EXIT_REASON_PAL_CALL] = handle_pal_call,
530 [EXIT_REASON_SAL_CALL] = handle_sal_call,
531 [EXIT_REASON_SWITCH_RR6] = handle_switch_rr6,
532 [EXIT_REASON_VM_DESTROY] = handle_vm_shutdown,
533 [EXIT_REASON_EXTERNAL_INTERRUPT] = handle_external_interrupt,
534 [EXIT_REASON_IPI] = handle_ipi,
535 [EXIT_REASON_PTC_G] = handle_global_purge,
7d637978 536 [EXIT_REASON_DEBUG] = handle_vcpu_debug,
b024b793
XZ		 537
538};
539
540static const int kvm_vti_max_exit_handlers =
541 sizeof(kvm_vti_exit_handlers)/sizeof(*kvm_vti_exit_handlers);
542
b024b793
XZ		 543static uint32_t kvm_get_exit_reason(struct kvm_vcpu *vcpu)
544{
545 struct exit_ctl_data *p_exit_data;
546
547 p_exit_data = kvm_get_exit_data(vcpu);
548 return p_exit_data->exit_reason;
549}
550
551/*
552 * The guest has exited. See if we can fix it or if we need userspace
553 * assistance.
554 */
555static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
556{
557 u32 exit_reason = kvm_get_exit_reason(vcpu);
558 vcpu->arch.last_exit = exit_reason;
559
560 if (exit_reason < kvm_vti_max_exit_handlers
561 && kvm_vti_exit_handlers[exit_reason])
562 return kvm_vti_exit_handlers[exit_reason](vcpu, kvm_run);
563 else {
564 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
565 kvm_run->hw.hardware_exit_reason = exit_reason;
566 }
567 return 0;
568}
569
570static inline void vti_set_rr6(unsigned long rr6)
571{
572 ia64_set_rr(RR6, rr6);
573 ia64_srlz_i();
574}
575
576static int kvm_insert_vmm_mapping(struct kvm_vcpu *vcpu)
577{
578 unsigned long pte;
579 struct kvm *kvm = vcpu->kvm;
580 int r;
581
582 /*Insert a pair of tr to map vmm*/
583 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL));
584 r = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
585 if (r < 0)
586 goto out;
587 vcpu->arch.vmm_tr_slot = r;
588 /*Insert a pairt of tr to map data of vm*/
589 pte = pte_val(mk_pte_phys(__pa(kvm->arch.vm_base), PAGE_KERNEL));
590 r = ia64_itr_entry(0x3, KVM_VM_DATA_BASE,
591 pte, KVM_VM_DATA_SHIFT);
592 if (r < 0)
593 goto out;
594 vcpu->arch.vm_tr_slot = r;
0c72ea7f
JS		 595
596#if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
597 if (kvm->arch.is_sn2) {
598 r = kvm_sn2_setup_mappings(vcpu);
599 if (r < 0)
600 goto out;
601 }
602#endif
603
b024b793
XZ		 604 r = 0;
605out:
606 return r;
b024b793
XZ		 607}
608
609static void kvm_purge_vmm_mapping(struct kvm_vcpu *vcpu)
610{
0c72ea7f 611 struct kvm *kvm = vcpu->kvm;
b024b793
XZ		 612 ia64_ptr_entry(0x3, vcpu->arch.vmm_tr_slot);
613 ia64_ptr_entry(0x3, vcpu->arch.vm_tr_slot);
0c72ea7f
JS		 614#if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
615 if (kvm->arch.is_sn2)
616 ia64_ptr_entry(0x3, vcpu->arch.sn_rtc_tr_slot);
617#endif
b024b793
XZ		 618}
619
620static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu)
621{
4d13c3b0
JS		 622 unsigned long psr;
623 int r;
b024b793
XZ		 624 int cpu = smp_processor_id();
625
626 if (vcpu->arch.last_run_cpu != cpu ||
627 per_cpu(last_vcpu, cpu) != vcpu) {
628 per_cpu(last_vcpu, cpu) = vcpu;
629 vcpu->arch.last_run_cpu = cpu;
630 kvm_flush_tlb_all();
631 }
632
633 vcpu->arch.host_rr6 = ia64_get_rr(RR6);
634 vti_set_rr6(vcpu->arch.vmm_rr);
4d13c3b0
JS		 635 local_irq_save(psr);
636 r = kvm_insert_vmm_mapping(vcpu);
637 local_irq_restore(psr);
638 return r;
b024b793 639}
c6b60c69 640
b024b793
XZ		 641static void kvm_vcpu_post_transition(struct kvm_vcpu *vcpu)
642{
643 kvm_purge_vmm_mapping(vcpu);
644 vti_set_rr6(vcpu->arch.host_rr6);
645}
646
c6b60c69 647static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
b024b793
XZ		 648{
649 union context *host_ctx, *guest_ctx;
650 int r;
651
c6b60c69
JS		 652 /*
653 * down_read() may sleep and return with interrupts enabled
654 */
655 down_read(&vcpu->kvm->slots_lock);
b024b793
XZ		 656
657again:
b024b793 658 if (signal_pending(current)) {
b024b793
XZ		 659 r = -EINTR;
660 kvm_run->exit_reason = KVM_EXIT_INTR;
661 goto out;
662 }
663
d24d2c1c
JS		 664 preempt_disable();
665 local_irq_disable();
666
c6b60c69
JS		 667 /*Get host and guest context with guest address space.*/
668 host_ctx = kvm_get_host_context(vcpu);
669 guest_ctx = kvm_get_guest_context(vcpu);
670
32f88400 671 clear_bit(KVM_REQ_KICK, &vcpu->requests);
c6b60c69
JS		 672
673 r = kvm_vcpu_pre_transition(vcpu);
674 if (r < 0)
675 goto vcpu_run_fail;
676
677 up_read(&vcpu->kvm->slots_lock);
b024b793 678 kvm_guest_enter();
c6b60c69
JS		 679
680 /*
681 * Transition to the guest
682 */
683 kvm_vmm_info->tramp_entry(host_ctx, guest_ctx);
684
685 kvm_vcpu_post_transition(vcpu);
b024b793
XZ		 686
687 vcpu->arch.launched = 1;
32f88400 688 set_bit(KVM_REQ_KICK, &vcpu->requests);
b024b793
XZ		 689 local_irq_enable();
690
691 /*
692 * We must have an instruction between local_irq_enable() and
693 * kvm_guest_exit(), so the timer interrupt isn't delayed by
694 * the interrupt shadow. The stat.exits increment will do nicely.
695 * But we need to prevent reordering, hence this barrier():
696 */
697 barrier();
b024b793 698 kvm_guest_exit();
b024b793
XZ		 699 preempt_enable();
700
c6b60c69
JS		 701 down_read(&vcpu->kvm->slots_lock);
702
b024b793
XZ		 703 r = kvm_handle_exit(kvm_run, vcpu);
704
705 if (r > 0) {
706 if (!need_resched())
707 goto again;
708 }
709
710out:
c6b60c69 711 up_read(&vcpu->kvm->slots_lock);
b024b793
XZ		 712 if (r > 0) {
713 kvm_resched(vcpu);
c6b60c69 714 down_read(&vcpu->kvm->slots_lock);
b024b793
XZ		 715 goto again;
716 }
717
718 return r;
c6b60c69
JS		 719
720vcpu_run_fail:
721 local_irq_enable();
722 preempt_enable();
723 kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
724 goto out;
b024b793
XZ		 725}
726
727static void kvm_set_mmio_data(struct kvm_vcpu *vcpu)
728{
729 struct kvm_mmio_req *p = kvm_get_vcpu_ioreq(vcpu);
730
731 if (!vcpu->mmio_is_write)
732 memcpy(&p->data, vcpu->mmio_data, 8);
733 p->state = STATE_IORESP_READY;
734}
735
736int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
737{
738 int r;
739 sigset_t sigsaved;
740
741 vcpu_load(vcpu);
742
a2e4e289
XZ		 743 if (vcpu->sigset_active)
744 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
745
a4535290 746 if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) {
b024b793 747 kvm_vcpu_block(vcpu);
decc9016 748 clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
a2e4e289
XZ		 749 r = -EAGAIN;
750 goto out;
b024b793
XZ		 751 }
752
b024b793
XZ		 753 if (vcpu->mmio_needed) {
754 memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8);
755 kvm_set_mmio_data(vcpu);
756 vcpu->mmio_read_completed = 1;
757 vcpu->mmio_needed = 0;
758 }
759 r = __vcpu_run(vcpu, kvm_run);
a2e4e289 760out:
b024b793
XZ		 761 if (vcpu->sigset_active)
762 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
763
764 vcpu_put(vcpu);
765 return r;
766}
767
b024b793
XZ		 768static struct kvm *kvm_alloc_kvm(void)
769{
770
771 struct kvm *kvm;
772 uint64_t vm_base;
773
a917f7af
XZ		 774 BUG_ON(sizeof(struct kvm) > KVM_VM_STRUCT_SIZE);
775
b024b793
XZ		 776 vm_base = __get_free_pages(GFP_KERNEL, get_order(KVM_VM_DATA_SIZE));
777
778 if (!vm_base)
779 return ERR_PTR(-ENOMEM);
b024b793 780
b024b793 781 memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
a917f7af
XZ		 782 kvm = (struct kvm *)(vm_base +
783 offsetof(struct kvm_vm_data, kvm_vm_struct));
b024b793 784 kvm->arch.vm_base = vm_base;
a917f7af 785 printk(KERN_DEBUG"kvm: vm's data area:0x%lx\n", vm_base);
b024b793
XZ		 786
787 return kvm;
788}
789
790struct kvm_io_range {
791 unsigned long start;
792 unsigned long size;
793 unsigned long type;
794};
795
796static const struct kvm_io_range io_ranges[] = {
797 {VGA_IO_START, VGA_IO_SIZE, GPFN_FRAME_BUFFER},
798 {MMIO_START, MMIO_SIZE, GPFN_LOW_MMIO},
799 {LEGACY_IO_START, LEGACY_IO_SIZE, GPFN_LEGACY_IO},
800 {IO_SAPIC_START, IO_SAPIC_SIZE, GPFN_IOSAPIC},
801 {PIB_START, PIB_SIZE, GPFN_PIB},
802};
803
804static void kvm_build_io_pmt(struct kvm *kvm)
805{
806 unsigned long i, j;
807
808 /* Mark I/O ranges */
809 for (i = 0; i < (sizeof(io_ranges) / sizeof(struct kvm_io_range));
810 i++) {
811 for (j = io_ranges[i].start;
812 j < io_ranges[i].start + io_ranges[i].size;
813 j += PAGE_SIZE)
814 kvm_set_pmt_entry(kvm, j >> PAGE_SHIFT,
815 io_ranges[i].type, 0);
816 }
817
818}
819
820/*Use unused rids to virtualize guest rid.*/
821#define GUEST_PHYSICAL_RR0 0x1739
822#define GUEST_PHYSICAL_RR4 0x2739
823#define VMM_INIT_RR 0x1660
824
825static void kvm_init_vm(struct kvm *kvm)
826{
b024b793
XZ		 827 BUG_ON(!kvm);
828
829 kvm->arch.metaphysical_rr0 = GUEST_PHYSICAL_RR0;
830 kvm->arch.metaphysical_rr4 = GUEST_PHYSICAL_RR4;
831 kvm->arch.vmm_init_rr = VMM_INIT_RR;
832
b024b793
XZ		 833 /*
834 *Fill P2M entries for MMIO/IO ranges
835 */
836 kvm_build_io_pmt(kvm);
837
2381ad24 838 INIT_LIST_HEAD(&kvm->arch.assigned_dev_head);
5550af4d
SY		 839
840 /* Reserve bit 0 of irq_sources_bitmap for userspace irq source */
841 set_bit(KVM_USERSPACE_IRQ_SOURCE_ID, &kvm->arch.irq_sources_bitmap);
b024b793
XZ		 842}
843
844struct kvm *kvm_arch_create_vm(void)
845{
846 struct kvm *kvm = kvm_alloc_kvm();
847
848 if (IS_ERR(kvm))
849 return ERR_PTR(-ENOMEM);
0c72ea7f
JS		 850
851 kvm->arch.is_sn2 = ia64_platform_is("sn2");
852
b024b793
XZ		 853 kvm_init_vm(kvm);
854
855 return kvm;
856
857}
858
859static int kvm_vm_ioctl_get_irqchip(struct kvm *kvm,
860 struct kvm_irqchip *chip)
861{
862 int r;
863
864 r = 0;
865 switch (chip->chip_id) {
866 case KVM_IRQCHIP_IOAPIC:
867 memcpy(&chip->chip.ioapic, ioapic_irqchip(kvm),
868 sizeof(struct kvm_ioapic_state));
869 break;
870 default:
871 r = -EINVAL;
872 break;
873 }
874 return r;
875}
876
877static int kvm_vm_ioctl_set_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
878{
879 int r;
880
881 r = 0;
882 switch (chip->chip_id) {
883 case KVM_IRQCHIP_IOAPIC:
884 memcpy(ioapic_irqchip(kvm),
885 &chip->chip.ioapic,
886 sizeof(struct kvm_ioapic_state));
887 break;
888 default:
889 r = -EINVAL;
890 break;
891 }
892 return r;
893}
894
895#define RESTORE_REGS(_x) vcpu->arch._x = regs->_x
896
897int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
898{
b024b793 899 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
042b26ed 900 int i;
b024b793
XZ		 901
902 vcpu_load(vcpu);
903
904 for (i = 0; i < 16; i++) {
905 vpd->vgr[i] = regs->vpd.vgr[i];
906 vpd->vbgr[i] = regs->vpd.vbgr[i];
907 }
908 for (i = 0; i < 128; i++)
909 vpd->vcr[i] = regs->vpd.vcr[i];
910 vpd->vhpi = regs->vpd.vhpi;
911 vpd->vnat = regs->vpd.vnat;
912 vpd->vbnat = regs->vpd.vbnat;
913 vpd->vpsr = regs->vpd.vpsr;
914
915 vpd->vpr = regs->vpd.vpr;
916
042b26ed 917 memcpy(&vcpu->arch.guest, &regs->saved_guest, sizeof(union context));
b024b793
XZ		 918
919 RESTORE_REGS(mp_state);
920 RESTORE_REGS(vmm_rr);
921 memcpy(vcpu->arch.itrs, regs->itrs, sizeof(struct thash_data) * NITRS);
922 memcpy(vcpu->arch.dtrs, regs->dtrs, sizeof(struct thash_data) * NDTRS);
923 RESTORE_REGS(itr_regions);
924 RESTORE_REGS(dtr_regions);
925 RESTORE_REGS(tc_regions);
926 RESTORE_REGS(irq_check);
927 RESTORE_REGS(itc_check);
928 RESTORE_REGS(timer_check);
929 RESTORE_REGS(timer_pending);
930 RESTORE_REGS(last_itc);
931 for (i = 0; i < 8; i++) {
932 vcpu->arch.vrr[i] = regs->vrr[i];
933 vcpu->arch.ibr[i] = regs->ibr[i];
934 vcpu->arch.dbr[i] = regs->dbr[i];
935 }
936 for (i = 0; i < 4; i++)
937 vcpu->arch.insvc[i] = regs->insvc[i];
938 RESTORE_REGS(xtp);
939 RESTORE_REGS(metaphysical_rr0);
940 RESTORE_REGS(metaphysical_rr4);
941 RESTORE_REGS(metaphysical_saved_rr0);
942 RESTORE_REGS(metaphysical_saved_rr4);
943 RESTORE_REGS(fp_psr);
944 RESTORE_REGS(saved_gp);
945
946 vcpu->arch.irq_new_pending = 1;
c6c9fcdf 947 vcpu->arch.itc_offset = regs->saved_itc - kvm_get_itc(vcpu);
b024b793
XZ		 948 set_bit(KVM_REQ_RESUME, &vcpu->requests);
949
950 vcpu_put(vcpu);
042b26ed
JS		 951
952 return 0;
b024b793
XZ		 953}
954
955long kvm_arch_vm_ioctl(struct file *filp,
956 unsigned int ioctl, unsigned long arg)
957{
958 struct kvm *kvm = filp->private_data;
959 void __user *argp = (void __user *)arg;
960 int r = -EINVAL;
961
962 switch (ioctl) {
963 case KVM_SET_MEMORY_REGION: {
964 struct kvm_memory_region kvm_mem;
965 struct kvm_userspace_memory_region kvm_userspace_mem;
966
967 r = -EFAULT;
968 if (copy_from_user(&kvm_mem, argp, sizeof kvm_mem))
969 goto out;
970 kvm_userspace_mem.slot = kvm_mem.slot;
971 kvm_userspace_mem.flags = kvm_mem.flags;
972 kvm_userspace_mem.guest_phys_addr =
973 kvm_mem.guest_phys_addr;
974 kvm_userspace_mem.memory_size = kvm_mem.memory_size;
975 r = kvm_vm_ioctl_set_memory_region(kvm,
976 &kvm_userspace_mem, 0);
977 if (r)
978 goto out;
979 break;
980 }
981 case KVM_CREATE_IRQCHIP:
982 r = -EFAULT;
983 r = kvm_ioapic_init(kvm);
984 if (r)
985 goto out;
399ec807
AK		 986 r = kvm_setup_default_irq_routing(kvm);
987 if (r) {
988 kfree(kvm->arch.vioapic);
989 goto out;
990 }
b024b793 991 break;
4925663a 992 case KVM_IRQ_LINE_STATUS:
b024b793
XZ		 993 case KVM_IRQ_LINE: {
994 struct kvm_irq_level irq_event;
995
996 r = -EFAULT;
997 if (copy_from_user(&irq_event, argp, sizeof irq_event))
998 goto out;
999 if (irqchip_in_kernel(kvm)) {
4925663a 1000 __s32 status;
fa40a821 1001 mutex_lock(&kvm->irq_lock);
4925663a 1002 status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
5550af4d 1003 irq_event.irq, irq_event.level);
fa40a821 1004 mutex_unlock(&kvm->irq_lock);
4925663a
GN		 1005 if (ioctl == KVM_IRQ_LINE_STATUS) {
1006 irq_event.status = status;
1007 if (copy_to_user(argp, &irq_event,
1008 sizeof irq_event))
1009 goto out;
1010 }
b024b793
XZ		 1011 r = 0;
1012 }
1013 break;
1014 }
1015 case KVM_GET_IRQCHIP: {
1016 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
1017 struct kvm_irqchip chip;
1018
1019 r = -EFAULT;
1020 if (copy_from_user(&chip, argp, sizeof chip))
1021 goto out;
1022 r = -ENXIO;
1023 if (!irqchip_in_kernel(kvm))
1024 goto out;
1025 r = kvm_vm_ioctl_get_irqchip(kvm, &chip);
1026 if (r)
1027 goto out;
1028 r = -EFAULT;
1029 if (copy_to_user(argp, &chip, sizeof chip))
1030 goto out;
1031 r = 0;
1032 break;
1033 }
1034 case KVM_SET_IRQCHIP: {
1035 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
1036 struct kvm_irqchip chip;
1037
1038 r = -EFAULT;
1039 if (copy_from_user(&chip, argp, sizeof chip))
1040 goto out;
1041 r = -ENXIO;
1042 if (!irqchip_in_kernel(kvm))
1043 goto out;
1044 r = kvm_vm_ioctl_set_irqchip(kvm, &chip);
1045 if (r)
1046 goto out;
1047 r = 0;
1048 break;
1049 }
1050 default:
1051 ;
1052 }
1053out:
1054 return r;
1055}
1056
1057int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
1058 struct kvm_sregs *sregs)
1059{
1060 return -EINVAL;
1061}
1062
1063int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
1064 struct kvm_sregs *sregs)
1065{
1066 return -EINVAL;
1067
1068}
1069int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
1070 struct kvm_translation *tr)
1071{
1072
1073 return -EINVAL;
1074}
1075
1076static int kvm_alloc_vmm_area(void)
1077{
1078 if (!kvm_vmm_base && (kvm_vm_buffer_size < KVM_VM_BUFFER_SIZE)) {
1079 kvm_vmm_base = __get_free_pages(GFP_KERNEL,
1080 get_order(KVM_VMM_SIZE));
1081 if (!kvm_vmm_base)
1082 return -ENOMEM;
1083
1084 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1085 kvm_vm_buffer = kvm_vmm_base + VMM_SIZE;
1086
1087 printk(KERN_DEBUG"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n",
1088 kvm_vmm_base, kvm_vm_buffer);
1089 }
1090
1091 return 0;
1092}
1093
1094static void kvm_free_vmm_area(void)
1095{
1096 if (kvm_vmm_base) {
1097 /*Zero this area before free to avoid bits leak!!*/
1098 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1099 free_pages(kvm_vmm_base, get_order(KVM_VMM_SIZE));
1100 kvm_vmm_base = 0;
1101 kvm_vm_buffer = 0;
1102 kvm_vsa_base = 0;
1103 }
1104}
1105
b024b793
XZ		 1106static int vti_init_vpd(struct kvm_vcpu *vcpu)
1107{
1108 int i;
1109 union cpuid3_t cpuid3;
1110 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1111
1112 if (IS_ERR(vpd))
1113 return PTR_ERR(vpd);
1114
1115 /* CPUID init */
1116 for (i = 0; i < 5; i++)
1117 vpd->vcpuid[i] = ia64_get_cpuid(i);
1118
1119 /* Limit the CPUID number to 5 */
1120 cpuid3.value = vpd->vcpuid[3];
1121 cpuid3.number = 4; /* 5 - 1 */
1122 vpd->vcpuid[3] = cpuid3.value;
1123
1124 /*Set vac and vdc fields*/
1125 vpd->vac.a_from_int_cr = 1;
1126 vpd->vac.a_to_int_cr = 1;
1127 vpd->vac.a_from_psr = 1;
1128 vpd->vac.a_from_cpuid = 1;
1129 vpd->vac.a_cover = 1;
1130 vpd->vac.a_bsw = 1;
1131 vpd->vac.a_int = 1;
1132 vpd->vdc.d_vmsw = 1;
1133
1134 /*Set virtual buffer*/
1135 vpd->virt_env_vaddr = KVM_VM_BUFFER_BASE;
1136
1137 return 0;
1138}
1139
1140static int vti_create_vp(struct kvm_vcpu *vcpu)
1141{
1142 long ret;
1143 struct vpd *vpd = vcpu->arch.vpd;
1144 unsigned long vmm_ivt;
1145
1146 vmm_ivt = kvm_vmm_info->vmm_ivt;
1147
1148 printk(KERN_DEBUG "kvm: vcpu:%p,ivt: 0x%lx\n", vcpu, vmm_ivt);
1149
1150 ret = ia64_pal_vp_create((u64 *)vpd, (u64 *)vmm_ivt, 0);
1151
1152 if (ret) {
1153 printk(KERN_ERR"kvm: ia64_pal_vp_create failed!\n");
1154 return -EINVAL;
1155 }
1156 return 0;
1157}
1158
1159static void init_ptce_info(struct kvm_vcpu *vcpu)
1160{
1161 ia64_ptce_info_t ptce = {0};
1162
1163 ia64_get_ptce(&ptce);
1164 vcpu->arch.ptce_base = ptce.base;
1165 vcpu->arch.ptce_count[0] = ptce.count[0];
1166 vcpu->arch.ptce_count[1] = ptce.count[1];
1167 vcpu->arch.ptce_stride[0] = ptce.stride[0];
1168 vcpu->arch.ptce_stride[1] = ptce.stride[1];
1169}
1170
1171static void kvm_migrate_hlt_timer(struct kvm_vcpu *vcpu)
1172{
1173 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
1174
1175 if (hrtimer_cancel(p_ht))
18dd36af 1176 hrtimer_start_expires(p_ht, HRTIMER_MODE_ABS);
b024b793
XZ		 1177}
1178
1179static enum hrtimer_restart hlt_timer_fn(struct hrtimer *data)
1180{
1181 struct kvm_vcpu *vcpu;
1182 wait_queue_head_t *q;
1183
1184 vcpu = container_of(data, struct kvm_vcpu, arch.hlt_timer);
decc9016
XZ		 1185 q = &vcpu->wq;
1186
a4535290 1187 if (vcpu->arch.mp_state != KVM_MP_STATE_HALTED)
b024b793
XZ		 1188 goto out;
1189
decc9016 1190 if (waitqueue_active(q))
b024b793 1191 wake_up_interruptible(q);
decc9016 1192
b024b793 1193out:
decc9016 1194 vcpu->arch.timer_fired = 1;
b024b793
XZ		 1195 vcpu->arch.timer_check = 1;
1196 return HRTIMER_NORESTART;
1197}
1198
1199#define PALE_RESET_ENTRY 0x80000000ffffffb0UL
1200
1201int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
1202{
1203 struct kvm_vcpu *v;
1204 int r;
1205 int i;
1206 long itc_offset;
1207 struct kvm *kvm = vcpu->kvm;
1208 struct kvm_pt_regs *regs = vcpu_regs(vcpu);
1209
1210 union context *p_ctx = &vcpu->arch.guest;
1211 struct kvm_vcpu *vmm_vcpu = to_guest(vcpu->kvm, vcpu);
1212
1213 /*Init vcpu context for first run.*/
1214 if (IS_ERR(vmm_vcpu))
1215 return PTR_ERR(vmm_vcpu);
1216
c5af89b6 1217 if (kvm_vcpu_is_bsp(vcpu)) {
a4535290 1218 vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
b024b793
XZ		 1219
1220 /*Set entry address for first run.*/
1221 regs->cr_iip = PALE_RESET_ENTRY;
1222
a917f7af 1223 /*Initialize itc offset for vcpus*/
c6c9fcdf 1224 itc_offset = 0UL - kvm_get_itc(vcpu);
3032b925 1225 for (i = 0; i < KVM_MAX_VCPUS; i++) {
a917f7af
XZ		 1226 v = (struct kvm_vcpu *)((char *)vcpu +
1227 sizeof(struct kvm_vcpu_data) * i);
b024b793
XZ		 1228 v->arch.itc_offset = itc_offset;
1229 v->arch.last_itc = 0;
1230 }
1231 } else
a4535290 1232 vcpu->arch.mp_state = KVM_MP_STATE_UNINITIALIZED;
b024b793
XZ		 1233
1234 r = -ENOMEM;
1235 vcpu->arch.apic = kzalloc(sizeof(struct kvm_lapic), GFP_KERNEL);
1236 if (!vcpu->arch.apic)
1237 goto out;
1238 vcpu->arch.apic->vcpu = vcpu;
1239
1240 p_ctx->gr[1] = 0;
a917f7af 1241 p_ctx->gr[12] = (unsigned long)((char *)vmm_vcpu + KVM_STK_OFFSET);
b024b793
XZ		 1242 p_ctx->gr[13] = (unsigned long)vmm_vcpu;
1243 p_ctx->psr = 0x1008522000UL;
1244 p_ctx->ar[40] = FPSR_DEFAULT; /*fpsr*/
1245 p_ctx->caller_unat = 0;
1246 p_ctx->pr = 0x0;
1247 p_ctx->ar[36] = 0x0; /*unat*/
1248 p_ctx->ar[19] = 0x0; /*rnat*/
1249 p_ctx->ar[18] = (unsigned long)vmm_vcpu +
1250 ((sizeof(struct kvm_vcpu)+15) & ~15);
1251 p_ctx->ar[64] = 0x0; /*pfs*/
1252 p_ctx->cr[0] = 0x7e04UL;
1253 p_ctx->cr[2] = (unsigned long)kvm_vmm_info->vmm_ivt;
1254 p_ctx->cr[8] = 0x3c;
1255
1256 /*Initilize region register*/
1257 p_ctx->rr[0] = 0x30;
1258 p_ctx->rr[1] = 0x30;
1259 p_ctx->rr[2] = 0x30;
1260 p_ctx->rr[3] = 0x30;
1261 p_ctx->rr[4] = 0x30;
1262 p_ctx->rr[5] = 0x30;
1263 p_ctx->rr[7] = 0x30;
1264
1265 /*Initilize branch register 0*/
1266 p_ctx->br[0] = *(unsigned long *)kvm_vmm_info->vmm_entry;
1267
1268 vcpu->arch.vmm_rr = kvm->arch.vmm_init_rr;
1269 vcpu->arch.metaphysical_rr0 = kvm->arch.metaphysical_rr0;
1270 vcpu->arch.metaphysical_rr4 = kvm->arch.metaphysical_rr4;
1271
1272 hrtimer_init(&vcpu->arch.hlt_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
1273 vcpu->arch.hlt_timer.function = hlt_timer_fn;
1274
1275 vcpu->arch.last_run_cpu = -1;
a917f7af 1276 vcpu->arch.vpd = (struct vpd *)VPD_BASE(vcpu->vcpu_id);
b024b793
XZ		 1277 vcpu->arch.vsa_base = kvm_vsa_base;
1278 vcpu->arch.__gp = kvm_vmm_gp;
1279 vcpu->arch.dirty_log_lock_pa = __pa(&kvm->arch.dirty_log_lock);
a917f7af
XZ		 1280 vcpu->arch.vhpt.hash = (struct thash_data *)VHPT_BASE(vcpu->vcpu_id);
1281 vcpu->arch.vtlb.hash = (struct thash_data *)VTLB_BASE(vcpu->vcpu_id);
b024b793
XZ		 1282 init_ptce_info(vcpu);
1283
1284 r = 0;
1285out:
1286 return r;
1287}
1288
1289static int vti_vcpu_setup(struct kvm_vcpu *vcpu, int id)
1290{
1291 unsigned long psr;
1292 int r;
1293
1294 local_irq_save(psr);
1295 r = kvm_insert_vmm_mapping(vcpu);
457459c3 1296 local_irq_restore(psr);
b024b793
XZ		 1297 if (r)
1298 goto fail;
1299 r = kvm_vcpu_init(vcpu, vcpu->kvm, id);
1300 if (r)
1301 goto fail;
1302
1303 r = vti_init_vpd(vcpu);
1304 if (r) {
1305 printk(KERN_DEBUG"kvm: vpd init error!!\n");
1306 goto uninit;
1307 }
1308
1309 r = vti_create_vp(vcpu);
1310 if (r)
1311 goto uninit;
1312
1313 kvm_purge_vmm_mapping(vcpu);
b024b793
XZ		 1314
1315 return 0;
1316uninit:
1317 kvm_vcpu_uninit(vcpu);
1318fail:
1319 return r;
1320}
1321
1322struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
1323 unsigned int id)
1324{
1325 struct kvm_vcpu *vcpu;
1326 unsigned long vm_base = kvm->arch.vm_base;
1327 int r;
1328 int cpu;
1329
a917f7af
XZ		 1330 BUG_ON(sizeof(struct kvm_vcpu) > VCPU_STRUCT_SIZE/2);
1331
1332 r = -EINVAL;
1333 if (id >= KVM_MAX_VCPUS) {
1334 printk(KERN_ERR"kvm: Can't configure vcpus > %ld",
1335 KVM_MAX_VCPUS);
1336 goto fail;
1337 }
1338
b024b793
XZ		 1339 r = -ENOMEM;
1340 if (!vm_base) {
1341 printk(KERN_ERR"kvm: Create vcpu[%d] error!\n", id);
1342 goto fail;
1343 }
a917f7af
XZ		 1344 vcpu = (struct kvm_vcpu *)(vm_base + offsetof(struct kvm_vm_data,
1345 vcpu_data[id].vcpu_struct));
b024b793
XZ		 1346 vcpu->kvm = kvm;
1347
1348 cpu = get_cpu();
b024b793
XZ		 1349 r = vti_vcpu_setup(vcpu, id);
1350 put_cpu();
1351
1352 if (r) {
1353 printk(KERN_DEBUG"kvm: vcpu_setup error!!\n");
1354 goto fail;
1355 }
1356
1357 return vcpu;
1358fail:
1359 return ERR_PTR(r);
1360}
1361
1362int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
1363{
1364 return 0;
1365}
1366
1367int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1368{
1369 return -EINVAL;
1370}
1371
1372int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1373{
1374 return -EINVAL;
1375}
1376
d0bfb940
JK		 1377int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
1378 struct kvm_guest_debug *dbg)
b024b793
XZ		 1379{
1380 return -EINVAL;
1381}
1382
1383static void free_kvm(struct kvm *kvm)
1384{
1385 unsigned long vm_base = kvm->arch.vm_base;
1386
1387 if (vm_base) {
1388 memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
1389 free_pages(vm_base, get_order(KVM_VM_DATA_SIZE));
1390 }
1391
1392}
1393
1394static void kvm_release_vm_pages(struct kvm *kvm)
1395{
1396 struct kvm_memory_slot *memslot;
1397 int i, j;
1398 unsigned long base_gfn;
1399
1400 for (i = 0; i < kvm->nmemslots; i++) {
1401 memslot = &kvm->memslots[i];
1402 base_gfn = memslot->base_gfn;
1403
1404 for (j = 0; j < memslot->npages; j++) {
1405 if (memslot->rmap[j])
1406 put_page((struct page *)memslot->rmap[j]);
1407 }
1408 }
1409}
1410
ad8ba2cd
SY		 1411void kvm_arch_sync_events(struct kvm *kvm)
1412{
1413}
1414
b024b793
XZ		 1415void kvm_arch_destroy_vm(struct kvm *kvm)
1416{
2381ad24
XZ		 1417 kvm_iommu_unmap_guest(kvm);
1418#ifdef KVM_CAP_DEVICE_ASSIGNMENT
1419 kvm_free_all_assigned_devices(kvm);
1420#endif
b024b793
XZ		 1421 kfree(kvm->arch.vioapic);
1422 kvm_release_vm_pages(kvm);
1423 kvm_free_physmem(kvm);
1424 free_kvm(kvm);
1425}
1426
1427void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
1428{
1429}
1430
1431void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
1432{
1433 if (cpu != vcpu->cpu) {
1434 vcpu->cpu = cpu;
1435 if (vcpu->arch.ht_active)
1436 kvm_migrate_hlt_timer(vcpu);
1437 }
1438}
1439
1440#define SAVE_REGS(_x) regs->_x = vcpu->arch._x
1441
1442int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1443{
b024b793 1444 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
042b26ed
JS		 1445 int i;
1446
b024b793
XZ		 1447 vcpu_load(vcpu);
1448
1449 for (i = 0; i < 16; i++) {
1450 regs->vpd.vgr[i] = vpd->vgr[i];
1451 regs->vpd.vbgr[i] = vpd->vbgr[i];
1452 }
1453 for (i = 0; i < 128; i++)
1454 regs->vpd.vcr[i] = vpd->vcr[i];
1455 regs->vpd.vhpi = vpd->vhpi;
1456 regs->vpd.vnat = vpd->vnat;
1457 regs->vpd.vbnat = vpd->vbnat;
1458 regs->vpd.vpsr = vpd->vpsr;
1459 regs->vpd.vpr = vpd->vpr;
1460
042b26ed
JS		 1461 memcpy(&regs->saved_guest, &vcpu->arch.guest, sizeof(union context));
1462
b024b793
XZ		 1463 SAVE_REGS(mp_state);
1464 SAVE_REGS(vmm_rr);
1465 memcpy(regs->itrs, vcpu->arch.itrs, sizeof(struct thash_data) * NITRS);
1466 memcpy(regs->dtrs, vcpu->arch.dtrs, sizeof(struct thash_data) * NDTRS);
1467 SAVE_REGS(itr_regions);
1468 SAVE_REGS(dtr_regions);
1469 SAVE_REGS(tc_regions);
1470 SAVE_REGS(irq_check);
1471 SAVE_REGS(itc_check);
1472 SAVE_REGS(timer_check);
1473 SAVE_REGS(timer_pending);
1474 SAVE_REGS(last_itc);
1475 for (i = 0; i < 8; i++) {
1476 regs->vrr[i] = vcpu->arch.vrr[i];
1477 regs->ibr[i] = vcpu->arch.ibr[i];
1478 regs->dbr[i] = vcpu->arch.dbr[i];
1479 }
1480 for (i = 0; i < 4; i++)
1481 regs->insvc[i] = vcpu->arch.insvc[i];
c6c9fcdf 1482 regs->saved_itc = vcpu->arch.itc_offset + kvm_get_itc(vcpu);
b024b793
XZ		 1483 SAVE_REGS(xtp);
1484 SAVE_REGS(metaphysical_rr0);
1485 SAVE_REGS(metaphysical_rr4);
1486 SAVE_REGS(metaphysical_saved_rr0);
1487 SAVE_REGS(metaphysical_saved_rr4);
1488 SAVE_REGS(fp_psr);
1489 SAVE_REGS(saved_gp);
042b26ed 1490
b024b793 1491 vcpu_put(vcpu);
042b26ed 1492 return 0;
b024b793
XZ		 1493}
1494
e9a999fe
JS		 1495int kvm_arch_vcpu_ioctl_get_stack(struct kvm_vcpu *vcpu,
1496 struct kvm_ia64_vcpu_stack *stack)
1497{
1498 memcpy(stack, vcpu, sizeof(struct kvm_ia64_vcpu_stack));
1499 return 0;
1500}
1501
1502int kvm_arch_vcpu_ioctl_set_stack(struct kvm_vcpu *vcpu,
1503 struct kvm_ia64_vcpu_stack *stack)
1504{
1505 memcpy(vcpu + 1, &stack->stack[0] + sizeof(struct kvm_vcpu),
1506 sizeof(struct kvm_ia64_vcpu_stack) - sizeof(struct kvm_vcpu));
1507
1508 vcpu->arch.exit_data = ((struct kvm_vcpu *)stack)->arch.exit_data;
1509 return 0;
1510}
1511
b024b793
XZ		 1512void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
1513{
1514
1515 hrtimer_cancel(&vcpu->arch.hlt_timer);
1516 kfree(vcpu->arch.apic);
1517}
1518
1519
1520long kvm_arch_vcpu_ioctl(struct file *filp,
e9a999fe 1521 unsigned int ioctl, unsigned long arg)
b024b793 1522{
e9a999fe
JS		 1523 struct kvm_vcpu *vcpu = filp->private_data;
1524 void __user *argp = (void __user *)arg;
1525 struct kvm_ia64_vcpu_stack *stack = NULL;
1526 long r;
1527
1528 switch (ioctl) {
1529 case KVM_IA64_VCPU_GET_STACK: {
1530 struct kvm_ia64_vcpu_stack __user *user_stack;
1531 void __user *first_p = argp;
1532
1533 r = -EFAULT;
1534 if (copy_from_user(&user_stack, first_p, sizeof(void *)))
1535 goto out;
1536
1537 if (!access_ok(VERIFY_WRITE, user_stack,
1538 sizeof(struct kvm_ia64_vcpu_stack))) {
1539 printk(KERN_INFO "KVM_IA64_VCPU_GET_STACK: "
1540 "Illegal user destination address for stack\n");
1541 goto out;
1542 }
1543 stack = kzalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL);
1544 if (!stack) {
1545 r = -ENOMEM;
1546 goto out;
1547 }
1548
1549 r = kvm_arch_vcpu_ioctl_get_stack(vcpu, stack);
1550 if (r)
1551 goto out;
1552
1553 if (copy_to_user(user_stack, stack,
1554 sizeof(struct kvm_ia64_vcpu_stack)))
1555 goto out;
1556
1557 break;
1558 }
1559 case KVM_IA64_VCPU_SET_STACK: {
1560 struct kvm_ia64_vcpu_stack __user *user_stack;
1561 void __user *first_p = argp;
1562
1563 r = -EFAULT;
1564 if (copy_from_user(&user_stack, first_p, sizeof(void *)))
1565 goto out;
1566
1567 if (!access_ok(VERIFY_READ, user_stack,
1568 sizeof(struct kvm_ia64_vcpu_stack))) {
1569 printk(KERN_INFO "KVM_IA64_VCPU_SET_STACK: "
1570 "Illegal user address for stack\n");
1571 goto out;
1572 }
1573 stack = kmalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL);
1574 if (!stack) {
1575 r = -ENOMEM;
1576 goto out;
1577 }
1578 if (copy_from_user(stack, user_stack,
1579 sizeof(struct kvm_ia64_vcpu_stack)))
1580 goto out;
1581
1582 r = kvm_arch_vcpu_ioctl_set_stack(vcpu, stack);
1583 break;
1584 }
1585
1586 default:
1587 r = -EINVAL;
1588 }
1589
1590out:
1591 kfree(stack);
1592 return r;
b024b793
XZ		 1593}
1594
1595int kvm_arch_set_memory_region(struct kvm *kvm,
1596 struct kvm_userspace_memory_region *mem,
1597 struct kvm_memory_slot old,
1598 int user_alloc)
1599{
1600 unsigned long i;
1cbea809 1601 unsigned long pfn;
b024b793
XZ		 1602 int npages = mem->memory_size >> PAGE_SHIFT;
1603 struct kvm_memory_slot *memslot = &kvm->memslots[mem->slot];
1604 unsigned long base_gfn = memslot->base_gfn;
1605
a917f7af
XZ		 1606 if (base_gfn + npages > (KVM_MAX_MEM_SIZE >> PAGE_SHIFT))
1607 return -ENOMEM;
1608
b024b793 1609 for (i = 0; i < npages; i++) {
1cbea809
XZ		 1610 pfn = gfn_to_pfn(kvm, base_gfn + i);
1611 if (!kvm_is_mmio_pfn(pfn)) {
1612 kvm_set_pmt_entry(kvm, base_gfn + i,
1613 pfn << PAGE_SHIFT,
b010eb51 1614 _PAGE_AR_RWX | _PAGE_MA_WB);
1cbea809
XZ		 1615 memslot->rmap[i] = (unsigned long)pfn_to_page(pfn);
1616 } else {
1617 kvm_set_pmt_entry(kvm, base_gfn + i,
b010eb51 1618 GPFN_PHYS_MMIO | (pfn << PAGE_SHIFT),
1cbea809
XZ		 1619 _PAGE_MA_UC);
1620 memslot->rmap[i] = 0;
1621 }
b024b793
XZ		 1622 }
1623
1624 return 0;
1625}
1626
34d4cb8f
MT		 1627void kvm_arch_flush_shadow(struct kvm *kvm)
1628{
64f6afbd 1629 kvm_flush_remote_tlbs(kvm);
34d4cb8f 1630}
b024b793
XZ		 1631
1632long kvm_arch_dev_ioctl(struct file *filp,
e9a999fe 1633 unsigned int ioctl, unsigned long arg)
b024b793
XZ		 1634{
1635 return -EINVAL;
1636}
1637
1638void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
1639{
1640 kvm_vcpu_uninit(vcpu);
1641}
1642
1643static int vti_cpu_has_kvm_support(void)
1644{
1645 long avail = 1, status = 1, control = 1;
1646 long ret;
1647
1648 ret = ia64_pal_proc_get_features(&avail, &status, &control, 0);
1649 if (ret)
1650 goto out;
1651
1652 if (!(avail & PAL_PROC_VM_BIT))
1653 goto out;
1654
1655 printk(KERN_DEBUG"kvm: Hardware Supports VT\n");
1656
1657 ret = ia64_pal_vp_env_info(&kvm_vm_buffer_size, &vp_env_info);
1658 if (ret)
1659 goto out;
1660 printk(KERN_DEBUG"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size);
1661
1662 if (!(vp_env_info & VP_OPCODE)) {
1663 printk(KERN_WARNING"kvm: No opcode ability on hardware, "
1664 "vm_env_info:0x%lx\n", vp_env_info);
1665 }
1666
1667 return 1;
1668out:
1669 return 0;
1670}
1671
0b5d7a2c
JS		 1672
1673/*
1674 * On SN2, the ITC isn't stable, so copy in fast path code to use the
1675 * SN2 RTC, replacing the ITC based default verion.
1676 */
1677static void kvm_patch_vmm(struct kvm_vmm_info *vmm_info,
1678 struct module *module)
1679{
1680 unsigned long new_ar, new_ar_sn2;
1681 unsigned long module_base;
1682
1683 if (!ia64_platform_is("sn2"))
1684 return;
1685
1686 module_base = (unsigned long)module->module_core;
1687
1688 new_ar = kvm_vmm_base + vmm_info->patch_mov_ar - module_base;
1689 new_ar_sn2 = kvm_vmm_base + vmm_info->patch_mov_ar_sn2 - module_base;
1690
1691 printk(KERN_INFO "kvm: Patching ITC emulation to use SGI SN2 RTC "
1692 "as source\n");
1693
1694 /*
1695 * Copy the SN2 version of mov_ar into place. They are both
1696 * the same size, so 6 bundles is sufficient (6 * 0x10).
1697 */
1698 memcpy((void *)new_ar, (void *)new_ar_sn2, 0x60);
1699}
1700
b024b793 1701static int kvm_relocate_vmm(struct kvm_vmm_info *vmm_info,
0b5d7a2c 1702 struct module *module)
b024b793
XZ		 1703{
1704 unsigned long module_base;
1705 unsigned long vmm_size;
1706
1707 unsigned long vmm_offset, func_offset, fdesc_offset;
1708 struct fdesc *p_fdesc;
1709
1710 BUG_ON(!module);
1711
1712 if (!kvm_vmm_base) {
1713 printk("kvm: kvm area hasn't been initilized yet!!\n");
1714 return -EFAULT;
1715 }
1716
1717 /*Calculate new position of relocated vmm module.*/
1718 module_base = (unsigned long)module->module_core;
1719 vmm_size = module->core_size;
1720 if (unlikely(vmm_size > KVM_VMM_SIZE))
1721 return -EFAULT;
1722
1723 memcpy((void *)kvm_vmm_base, (void *)module_base, vmm_size);
0b5d7a2c 1724 kvm_patch_vmm(vmm_info, module);
b024b793
XZ		 1725 kvm_flush_icache(kvm_vmm_base, vmm_size);
1726
1727 /*Recalculate kvm_vmm_info based on new VMM*/
1728 vmm_offset = vmm_info->vmm_ivt - module_base;
1729 kvm_vmm_info->vmm_ivt = KVM_VMM_BASE + vmm_offset;
1730 printk(KERN_DEBUG"kvm: Relocated VMM's IVT Base Addr:%lx\n",
1731 kvm_vmm_info->vmm_ivt);
1732
1733 fdesc_offset = (unsigned long)vmm_info->vmm_entry - module_base;
1734 kvm_vmm_info->vmm_entry = (kvm_vmm_entry *)(KVM_VMM_BASE +
1735 fdesc_offset);
1736 func_offset = *(unsigned long *)vmm_info->vmm_entry - module_base;
1737 p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset);
1738 p_fdesc->ip = KVM_VMM_BASE + func_offset;
1739 p_fdesc->gp = KVM_VMM_BASE+(p_fdesc->gp - module_base);
1740
1741 printk(KERN_DEBUG"kvm: Relocated VMM's Init Entry Addr:%lx\n",
1742 KVM_VMM_BASE+func_offset);
1743
1744 fdesc_offset = (unsigned long)vmm_info->tramp_entry - module_base;
1745 kvm_vmm_info->tramp_entry = (kvm_tramp_entry *)(KVM_VMM_BASE +
1746 fdesc_offset);
1747 func_offset = *(unsigned long *)vmm_info->tramp_entry - module_base;
1748 p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset);
1749 p_fdesc->ip = KVM_VMM_BASE + func_offset;
1750 p_fdesc->gp = KVM_VMM_BASE + (p_fdesc->gp - module_base);
1751
1752 kvm_vmm_gp = p_fdesc->gp;
1753
1754 printk(KERN_DEBUG"kvm: Relocated VMM's Entry IP:%p\n",
1755 kvm_vmm_info->vmm_entry);
1756 printk(KERN_DEBUG"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n",
1757 KVM_VMM_BASE + func_offset);
1758
1759 return 0;
1760}
1761
1762int kvm_arch_init(void *opaque)
1763{
1764 int r;
1765 struct kvm_vmm_info *vmm_info = (struct kvm_vmm_info *)opaque;
1766
1767 if (!vti_cpu_has_kvm_support()) {
1768 printk(KERN_ERR "kvm: No Hardware Virtualization Support!\n");
1769 r = -EOPNOTSUPP;
1770 goto out;
1771 }
1772
1773 if (kvm_vmm_info) {
1774 printk(KERN_ERR "kvm: Already loaded VMM module!\n");
1775 r = -EEXIST;
1776 goto out;
1777 }
1778
1779 r = -ENOMEM;
1780 kvm_vmm_info = kzalloc(sizeof(struct kvm_vmm_info), GFP_KERNEL);
1781 if (!kvm_vmm_info)
1782 goto out;
1783
1784 if (kvm_alloc_vmm_area())
1785 goto out_free0;
1786
1787 r = kvm_relocate_vmm(vmm_info, vmm_info->module);
1788 if (r)
1789 goto out_free1;
1790
1791 return 0;
1792
1793out_free1:
1794 kvm_free_vmm_area();
1795out_free0:
1796 kfree(kvm_vmm_info);
1797out:
1798 return r;
1799}
1800
1801void kvm_arch_exit(void)
1802{
1803 kvm_free_vmm_area();
1804 kfree(kvm_vmm_info);
1805 kvm_vmm_info = NULL;
1806}
1807
1808static int kvm_ia64_sync_dirty_log(struct kvm *kvm,
1809 struct kvm_dirty_log *log)
1810{
1811 struct kvm_memory_slot *memslot;
1812 int r, i;
1813 long n, base;
a917f7af
XZ		 1814 unsigned long *dirty_bitmap = (unsigned long *)(kvm->arch.vm_base +
1815 offsetof(struct kvm_vm_data, kvm_mem_dirty_log));
b024b793
XZ		 1816
1817 r = -EINVAL;
1818 if (log->slot >= KVM_MEMORY_SLOTS)
1819 goto out;
1820
1821 memslot = &kvm->memslots[log->slot];
1822 r = -ENOENT;
1823 if (!memslot->dirty_bitmap)
1824 goto out;
1825
1826 n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
1827 base = memslot->base_gfn / BITS_PER_LONG;
1828
1829 for (i = 0; i < n/sizeof(long); ++i) {
1830 memslot->dirty_bitmap[i] = dirty_bitmap[base + i];
1831 dirty_bitmap[base + i] = 0;
1832 }
1833 r = 0;
1834out:
1835 return r;
1836}
1837
1838int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
1839 struct kvm_dirty_log *log)
1840{
1841 int r;
1842 int n;
1843 struct kvm_memory_slot *memslot;
1844 int is_dirty = 0;
1845
1846 spin_lock(&kvm->arch.dirty_log_lock);
1847
1848 r = kvm_ia64_sync_dirty_log(kvm, log);
1849 if (r)
1850 goto out;
1851
1852 r = kvm_get_dirty_log(kvm, log, &is_dirty);
1853 if (r)
1854 goto out;
1855
1856 /* If nothing is dirty, don't bother messing with page tables. */
1857 if (is_dirty) {
1858 kvm_flush_remote_tlbs(kvm);
1859 memslot = &kvm->memslots[log->slot];
1860 n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
1861 memset(memslot->dirty_bitmap, 0, n);
1862 }
1863 r = 0;
1864out:
1865 spin_unlock(&kvm->arch.dirty_log_lock);
1866 return r;
1867}
1868
1869int kvm_arch_hardware_setup(void)
1870{
1871 return 0;
1872}
1873
1874void kvm_arch_hardware_unsetup(void)
1875{
1876}
1877
b024b793
XZ		 1878void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
1879{
32f88400
MT		 1880 int me;
1881 int cpu = vcpu->cpu;
b024b793
XZ		 1882
1883 if (waitqueue_active(&vcpu->wq))
1884 wake_up_interruptible(&vcpu->wq);
1885
32f88400
MT		 1886 me = get_cpu();
1887 if (cpu != me && (unsigned) cpu < nr_cpu_ids && cpu_online(cpu))
1888 if (!test_and_set_bit(KVM_REQ_KICK, &vcpu->requests))
1889 smp_send_reschedule(cpu);
decc9016 1890 put_cpu();
b024b793
XZ		 1891}
1892
58c2dde1 1893int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq)
b024b793 1894{
58c2dde1 1895 return __apic_accept_irq(vcpu, irq->vector);
b024b793
XZ		 1896}
1897
1898int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest)
1899{
1900 return apic->vcpu->vcpu_id == dest;
1901}
1902
1903int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda)
1904{
1905 return 0;
1906}
1907
e1035715 1908int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2)
b024b793 1909{
e1035715 1910 return vcpu1->arch.xtp - vcpu2->arch.xtp;
b024b793
XZ		 1911}
1912
343f94fe
GN		 1913int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
1914 int short_hand, int dest, int dest_mode)
1915{
58c2dde1 1916 struct kvm_lapic *target = vcpu->arch.apic;
343f94fe
GN		 1917 return (dest_mode == 0) ?
1918 kvm_apic_match_physical_addr(target, dest) :
1919 kvm_apic_match_logical_addr(target, dest);
1920}
1921
b024b793
XZ		 1922static int find_highest_bits(int *dat)
1923{
1924 u32 bits, bitnum;
1925 int i;
1926
1927 /* loop for all 256 bits */
1928 for (i = 7; i >= 0 ; i--) {
1929 bits = dat[i];
1930 if (bits) {
1931 bitnum = fls(bits);
1932 return i * 32 + bitnum - 1;
1933 }
1934 }
1935
1936 return -1;
1937}
1938
1939int kvm_highest_pending_irq(struct kvm_vcpu *vcpu)
1940{
1941 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1942
1943 if (vpd->irr[0] & (1UL << NMI_VECTOR))
1944 return NMI_VECTOR;
1945 if (vpd->irr[0] & (1UL << ExtINT_VECTOR))
1946 return ExtINT_VECTOR;
1947
1948 return find_highest_bits((int *)&vpd->irr[0]);
1949}
1950
1951int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu)
1952{
1953 if (kvm_highest_pending_irq(vcpu) != -1)
1954 return 1;
1955 return 0;
1956}
1957
78646121
GN		 1958int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu)
1959{
1960 /* do real check here */
1961 return 1;
1962}
1963
3d80840d
MT		 1964int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
1965{
decc9016 1966 return vcpu->arch.timer_fired;
3d80840d
MT		 1967}
1968
b024b793
XZ		 1969gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn)
1970{
1971 return gfn;
1972}
1973
1974int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
1975{
a4535290 1976 return vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE;
b024b793 1977}
62d9f0db
MT		 1978
1979int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
1980 struct kvm_mp_state *mp_state)
1981{
8c4b537d
XZ		 1982 vcpu_load(vcpu);
1983 mp_state->mp_state = vcpu->arch.mp_state;
1984 vcpu_put(vcpu);
1985 return 0;
1986}
1987
1988static int vcpu_reset(struct kvm_vcpu *vcpu)
1989{
1990 int r;
1991 long psr;
1992 local_irq_save(psr);
1993 r = kvm_insert_vmm_mapping(vcpu);
43890ae8 1994 local_irq_restore(psr);
8c4b537d
XZ		 1995 if (r)
1996 goto fail;
1997
1998 vcpu->arch.launched = 0;
1999 kvm_arch_vcpu_uninit(vcpu);
2000 r = kvm_arch_vcpu_init(vcpu);
2001 if (r)
2002 goto fail;
2003
2004 kvm_purge_vmm_mapping(vcpu);
2005 r = 0;
2006fail:
8c4b537d 2007 return r;
62d9f0db
MT		 2008}
2009
2010int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
2011 struct kvm_mp_state *mp_state)
2012{
8c4b537d
XZ		 2013 int r = 0;
2014
2015 vcpu_load(vcpu);
2016 vcpu->arch.mp_state = mp_state->mp_state;
2017 if (vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)
2018 r = vcpu_reset(vcpu);
2019 vcpu_put(vcpu);
2020 return r;
62d9f0db 2021}
Linux kernel - Deliverables
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