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KVM: Move KVM_IRQ_LINE to arch-generic code
[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>
b024b793 26#include <linux/fs.h>
5a0e3ad6 27#include <linux/slab.h>
b024b793
XZ		 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>
a1b60c1c 36#include <linux/pci.h>
b024b793
XZ		 37
38#include <asm/pgtable.h>
39#include <asm/gcc_intrin.h>
40#include <asm/pal.h>
41#include <asm/cacheflush.h>
42#include <asm/div64.h>
43#include <asm/tlb.h>
9f726323 44#include <asm/elf.h>
0c72ea7f
JS		 45#include <asm/sn/addrs.h>
46#include <asm/sn/clksupport.h>
47#include <asm/sn/shub_mmr.h>
b024b793
XZ		 48
49#include "misc.h"
50#include "vti.h"
51#include "iodev.h"
52#include "ioapic.h"
53#include "lapic.h"
2f749771 54#include "irq.h"
b024b793
XZ		 55
56static unsigned long kvm_vmm_base;
57static unsigned long kvm_vsa_base;
58static unsigned long kvm_vm_buffer;
59static unsigned long kvm_vm_buffer_size;
60unsigned long kvm_vmm_gp;
61
62static long vp_env_info;
63
64static struct kvm_vmm_info *kvm_vmm_info;
65
66static DEFINE_PER_CPU(struct kvm_vcpu *, last_vcpu);
67
68struct kvm_stats_debugfs_item debugfs_entries[] = {
69 { NULL }
70};
71
c6c9fcdf
JS		 72static unsigned long kvm_get_itc(struct kvm_vcpu *vcpu)
73{
74#if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
75 if (vcpu->kvm->arch.is_sn2)
76 return rtc_time();
77 else
78#endif
79 return ia64_getreg(_IA64_REG_AR_ITC);
80}
81
b024b793
XZ		 82static void kvm_flush_icache(unsigned long start, unsigned long len)
83{
84 int l;
85
86 for (l = 0; l < (len + 32); l += 32)
7120569c 87 ia64_fc((void *)(start + l));
b024b793
XZ		 88
89 ia64_sync_i();
90 ia64_srlz_i();
91}
92
93static void kvm_flush_tlb_all(void)
94{
95 unsigned long i, j, count0, count1, stride0, stride1, addr;
96 long flags;
97
98 addr = local_cpu_data->ptce_base;
99 count0 = local_cpu_data->ptce_count[0];
100 count1 = local_cpu_data->ptce_count[1];
101 stride0 = local_cpu_data->ptce_stride[0];
102 stride1 = local_cpu_data->ptce_stride[1];
103
104 local_irq_save(flags);
105 for (i = 0; i < count0; ++i) {
106 for (j = 0; j < count1; ++j) {
107 ia64_ptce(addr);
108 addr += stride1;
109 }
110 addr += stride0;
111 }
112 local_irq_restore(flags);
113 ia64_srlz_i(); /* srlz.i implies srlz.d */
114}
115
116long ia64_pal_vp_create(u64 *vpd, u64 *host_iva, u64 *opt_handler)
117{
118 struct ia64_pal_retval iprv;
119
120 PAL_CALL_STK(iprv, PAL_VP_CREATE, (u64)vpd, (u64)host_iva,
121 (u64)opt_handler);
122
123 return iprv.status;
124}
125
126static DEFINE_SPINLOCK(vp_lock);
127
10474ae8 128int kvm_arch_hardware_enable(void *garbage)
b024b793
XZ		 129{
130 long status;
131 long tmp_base;
132 unsigned long pte;
133 unsigned long saved_psr;
134 int slot;
135
0c72ea7f 136 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL));
b024b793
XZ		 137 local_irq_save(saved_psr);
138 slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
cab7a1ee 139 local_irq_restore(saved_psr);
b024b793 140 if (slot < 0)
10474ae8 141 return -EINVAL;
b024b793
XZ		 142
143 spin_lock(&vp_lock);
144 status = ia64_pal_vp_init_env(kvm_vsa_base ?
145 VP_INIT_ENV : VP_INIT_ENV_INITALIZE,
146 __pa(kvm_vm_buffer), KVM_VM_BUFFER_BASE, &tmp_base);
147 if (status != 0) {
3499f4d0 148 spin_unlock(&vp_lock);
b024b793 149 printk(KERN_WARNING"kvm: Failed to Enable VT Support!!!!\n");
10474ae8 150 return -EINVAL;
b024b793
XZ		 151 }
152
153 if (!kvm_vsa_base) {
154 kvm_vsa_base = tmp_base;
155 printk(KERN_INFO"kvm: kvm_vsa_base:0x%lx\n", kvm_vsa_base);
156 }
157 spin_unlock(&vp_lock);
158 ia64_ptr_entry(0x3, slot);
10474ae8
AG		 159
160 return 0;
b024b793
XZ		 161}
162
163void kvm_arch_hardware_disable(void *garbage)
164{
165
166 long status;
167 int slot;
168 unsigned long pte;
169 unsigned long saved_psr;
170 unsigned long host_iva = ia64_getreg(_IA64_REG_CR_IVA);
171
172 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base),
173 PAGE_KERNEL));
174
175 local_irq_save(saved_psr);
176 slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
cab7a1ee 177 local_irq_restore(saved_psr);
b024b793
XZ		 178 if (slot < 0)
179 return;
b024b793
XZ		 180
181 status = ia64_pal_vp_exit_env(host_iva);
182 if (status)
183 printk(KERN_DEBUG"kvm: Failed to disable VT support! :%ld\n",
184 status);
185 ia64_ptr_entry(0x3, slot);
186}
187
188void kvm_arch_check_processor_compat(void *rtn)
189{
190 *(int *)rtn = 0;
191}
192
193int kvm_dev_ioctl_check_extension(long ext)
194{
195
196 int r;
197
198 switch (ext) {
199 case KVM_CAP_IRQCHIP:
8c4b537d 200 case KVM_CAP_MP_STATE:
4925663a 201 case KVM_CAP_IRQ_INJECT_STATUS:
b024b793
XZ		 202 r = 1;
203 break;
7f39f8ac
LV		 204 case KVM_CAP_COALESCED_MMIO:
205 r = KVM_COALESCED_MMIO_PAGE_OFFSET;
206 break;
2381ad24 207 case KVM_CAP_IOMMU:
a1b60c1c 208 r = iommu_present(&pci_bus_type);
2381ad24 209 break;
b024b793
XZ		 210 default:
211 r = 0;
212 }
213 return r;
214
215}
216
b024b793
XZ		 217static int handle_vm_error(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
218{
219 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
220 kvm_run->hw.hardware_exit_reason = 1;
221 return 0;
222}
223
224static int handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
225{
226 struct kvm_mmio_req *p;
227 struct kvm_io_device *mmio_dev;
bda9020e 228 int r;
b024b793
XZ		 229
230 p = kvm_get_vcpu_ioreq(vcpu);
231
232 if ((p->addr & PAGE_MASK) == IOAPIC_DEFAULT_BASE_ADDRESS)
233 goto mmio;
234 vcpu->mmio_needed = 1;
f78146b0
AK		 235 vcpu->mmio_fragments[0].gpa = kvm_run->mmio.phys_addr = p->addr;
236 vcpu->mmio_fragments[0].len = kvm_run->mmio.len = p->size;
b024b793
XZ		 237 vcpu->mmio_is_write = kvm_run->mmio.is_write = !p->dir;
238
239 if (vcpu->mmio_is_write)
f78146b0 240 memcpy(vcpu->arch.mmio_data, &p->data, p->size);
b024b793
XZ		 241 memcpy(kvm_run->mmio.data, &p->data, p->size);
242 kvm_run->exit_reason = KVM_EXIT_MMIO;
243 return 0;
244mmio:
bda9020e 245 if (p->dir)
e93f8a0f 246 r = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, p->addr,
bda9020e
MT		 247 p->size, &p->data);
248 else
e93f8a0f 249 r = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, p->addr,
bda9020e
MT		 250 p->size, &p->data);
251 if (r)
b024b793
XZ		 252 printk(KERN_ERR"kvm: No iodevice found! addr:%lx\n", p->addr);
253 p->state = STATE_IORESP_READY;
254
255 return 1;
256}
257
258static int handle_pal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
259{
260 struct exit_ctl_data *p;
261
262 p = kvm_get_exit_data(vcpu);
263
264 if (p->exit_reason == EXIT_REASON_PAL_CALL)
265 return kvm_pal_emul(vcpu, kvm_run);
266 else {
267 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
268 kvm_run->hw.hardware_exit_reason = 2;
269 return 0;
270 }
271}
272
273static int handle_sal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
274{
275 struct exit_ctl_data *p;
276
277 p = kvm_get_exit_data(vcpu);
278
279 if (p->exit_reason == EXIT_REASON_SAL_CALL) {
280 kvm_sal_emul(vcpu);
281 return 1;
282 } else {
283 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
284 kvm_run->hw.hardware_exit_reason = 3;
285 return 0;
286 }
287
288}
289
58c2dde1
GN		 290static int __apic_accept_irq(struct kvm_vcpu *vcpu, uint64_t vector)
291{
292 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
293
294 if (!test_and_set_bit(vector, &vpd->irr[0])) {
295 vcpu->arch.irq_new_pending = 1;
296 kvm_vcpu_kick(vcpu);
297 return 1;
298 }
299 return 0;
300}
301
b024b793
XZ		 302/*
303 * offset: address offset to IPI space.
304 * value: deliver value.
305 */
306static void vcpu_deliver_ipi(struct kvm_vcpu *vcpu, uint64_t dm,
307 uint64_t vector)
308{
309 switch (dm) {
310 case SAPIC_FIXED:
b024b793
XZ		 311 break;
312 case SAPIC_NMI:
58c2dde1 313 vector = 2;
b024b793
XZ		 314 break;
315 case SAPIC_EXTINT:
58c2dde1 316 vector = 0;
b024b793
XZ		 317 break;
318 case SAPIC_INIT:
319 case SAPIC_PMI:
320 default:
321 printk(KERN_ERR"kvm: Unimplemented Deliver reserved IPI!\n");
58c2dde1 322 return;
b024b793 323 }
58c2dde1 324 __apic_accept_irq(vcpu, vector);
b024b793
XZ		 325}
326
327static struct kvm_vcpu *lid_to_vcpu(struct kvm *kvm, unsigned long id,
328 unsigned long eid)
329{
330 union ia64_lid lid;
331 int i;
988a2cae 332 struct kvm_vcpu *vcpu;
b024b793 333
988a2cae
GN		 334 kvm_for_each_vcpu(i, vcpu, kvm) {
335 lid.val = VCPU_LID(vcpu);
336 if (lid.id == id && lid.eid == eid)
337 return vcpu;
b024b793
XZ		 338 }
339
340 return NULL;
341}
342
343static int handle_ipi(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
344{
345 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
346 struct kvm_vcpu *target_vcpu;
347 struct kvm_pt_regs *regs;
348 union ia64_ipi_a addr = p->u.ipi_data.addr;
349 union ia64_ipi_d data = p->u.ipi_data.data;
350
351 target_vcpu = lid_to_vcpu(vcpu->kvm, addr.id, addr.eid);
352 if (!target_vcpu)
353 return handle_vm_error(vcpu, kvm_run);
354
355 if (!target_vcpu->arch.launched) {
356 regs = vcpu_regs(target_vcpu);
357
358 regs->cr_iip = vcpu->kvm->arch.rdv_sal_data.boot_ip;
359 regs->r1 = vcpu->kvm->arch.rdv_sal_data.boot_gp;
360
a4535290 361 target_vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
b024b793
XZ		 362 if (waitqueue_active(&target_vcpu->wq))
363 wake_up_interruptible(&target_vcpu->wq);
364 } else {
365 vcpu_deliver_ipi(target_vcpu, data.dm, data.vector);
366 if (target_vcpu != vcpu)
367 kvm_vcpu_kick(target_vcpu);
368 }
369
370 return 1;
371}
372
373struct call_data {
374 struct kvm_ptc_g ptc_g_data;
375 struct kvm_vcpu *vcpu;
376};
377
378static void vcpu_global_purge(void *info)
379{
380 struct call_data *p = (struct call_data *)info;
381 struct kvm_vcpu *vcpu = p->vcpu;
382
383 if (test_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests))
384 return;
385
386 set_bit(KVM_REQ_PTC_G, &vcpu->requests);
387 if (vcpu->arch.ptc_g_count < MAX_PTC_G_NUM) {
388 vcpu->arch.ptc_g_data[vcpu->arch.ptc_g_count++] =
389 p->ptc_g_data;
390 } else {
391 clear_bit(KVM_REQ_PTC_G, &vcpu->requests);
392 vcpu->arch.ptc_g_count = 0;
393 set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests);
394 }
395}
396
397static int handle_global_purge(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
398{
399 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
400 struct kvm *kvm = vcpu->kvm;
401 struct call_data call_data;
402 int i;
988a2cae 403 struct kvm_vcpu *vcpui;
decc9016 404
b024b793
XZ		 405 call_data.ptc_g_data = p->u.ptc_g_data;
406
988a2cae
GN		 407 kvm_for_each_vcpu(i, vcpui, kvm) {
408 if (vcpui->arch.mp_state == KVM_MP_STATE_UNINITIALIZED ||
409 vcpu == vcpui)
b024b793
XZ		 410 continue;
411
988a2cae
GN		 412 if (waitqueue_active(&vcpui->wq))
413 wake_up_interruptible(&vcpui->wq);
b024b793 414
988a2cae
GN		 415 if (vcpui->cpu != -1) {
416 call_data.vcpu = vcpui;
417 smp_call_function_single(vcpui->cpu,
2f73ccab 418 vcpu_global_purge, &call_data, 1);
b024b793
XZ		 419 } else
420 printk(KERN_WARNING"kvm: Uninit vcpu received ipi!\n");
421
422 }
423 return 1;
424}
425
426static int handle_switch_rr6(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
427{
428 return 1;
429}
430
0c72ea7f
JS		 431static int kvm_sn2_setup_mappings(struct kvm_vcpu *vcpu)
432{
433 unsigned long pte, rtc_phys_addr, map_addr;
434 int slot;
435
436 map_addr = KVM_VMM_BASE + (1UL << KVM_VMM_SHIFT);
437 rtc_phys_addr = LOCAL_MMR_OFFSET | SH_RTC;
438 pte = pte_val(mk_pte_phys(rtc_phys_addr, PAGE_KERNEL_UC));
439 slot = ia64_itr_entry(0x3, map_addr, pte, PAGE_SHIFT);
440 vcpu->arch.sn_rtc_tr_slot = slot;
441 if (slot < 0) {
442 printk(KERN_ERR "Mayday mayday! RTC mapping failed!\n");
443 slot = 0;
444 }
445 return slot;
446}
447
b024b793
XZ		 448int kvm_emulate_halt(struct kvm_vcpu *vcpu)
449{
450
451 ktime_t kt;
452 long itc_diff;
453 unsigned long vcpu_now_itc;
b024b793
XZ		 454 unsigned long expires;
455 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
456 unsigned long cyc_per_usec = local_cpu_data->cyc_per_usec;
457 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
458
decc9016 459 if (irqchip_in_kernel(vcpu->kvm)) {
b024b793 460
c6c9fcdf 461 vcpu_now_itc = kvm_get_itc(vcpu) + vcpu->arch.itc_offset;
b024b793 462
decc9016
XZ		 463 if (time_after(vcpu_now_itc, vpd->itm)) {
464 vcpu->arch.timer_check = 1;
465 return 1;
466 }
467 itc_diff = vpd->itm - vcpu_now_itc;
468 if (itc_diff < 0)
469 itc_diff = -itc_diff;
470
471 expires = div64_u64(itc_diff, cyc_per_usec);
472 kt = ktime_set(0, 1000 * expires);
473
decc9016
XZ		 474 vcpu->arch.ht_active = 1;
475 hrtimer_start(p_ht, kt, HRTIMER_MODE_ABS);
b024b793 476
a4535290 477 vcpu->arch.mp_state = KVM_MP_STATE_HALTED;
b024b793
XZ		 478 kvm_vcpu_block(vcpu);
479 hrtimer_cancel(p_ht);
480 vcpu->arch.ht_active = 0;
481
09cec754
GN		 482 if (test_and_clear_bit(KVM_REQ_UNHALT, &vcpu->requests) ||
483 kvm_cpu_has_pending_timer(vcpu))
decc9016 484 if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED)
09cec754 485 vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
decc9016 486
a4535290 487 if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE)
b024b793
XZ		 488 return -EINTR;
489 return 1;
490 } else {
491 printk(KERN_ERR"kvm: Unsupported userspace halt!");
492 return 0;
493 }
494}
495
496static int handle_vm_shutdown(struct kvm_vcpu *vcpu,
497 struct kvm_run *kvm_run)
498{
499 kvm_run->exit_reason = KVM_EXIT_SHUTDOWN;
500 return 0;
501}
502
503static int handle_external_interrupt(struct kvm_vcpu *vcpu,
504 struct kvm_run *kvm_run)
505{
506 return 1;
507}
508
7d637978
XZ		 509static int handle_vcpu_debug(struct kvm_vcpu *vcpu,
510 struct kvm_run *kvm_run)
511{
512 printk("VMM: %s", vcpu->arch.log_buf);
513 return 1;
514}
515
b024b793
XZ		 516static int (*kvm_vti_exit_handlers[])(struct kvm_vcpu *vcpu,
517 struct kvm_run *kvm_run) = {
518 [EXIT_REASON_VM_PANIC] = handle_vm_error,
519 [EXIT_REASON_MMIO_INSTRUCTION] = handle_mmio,
520 [EXIT_REASON_PAL_CALL] = handle_pal_call,
521 [EXIT_REASON_SAL_CALL] = handle_sal_call,
522 [EXIT_REASON_SWITCH_RR6] = handle_switch_rr6,
523 [EXIT_REASON_VM_DESTROY] = handle_vm_shutdown,
524 [EXIT_REASON_EXTERNAL_INTERRUPT] = handle_external_interrupt,
525 [EXIT_REASON_IPI] = handle_ipi,
526 [EXIT_REASON_PTC_G] = handle_global_purge,
7d637978 527 [EXIT_REASON_DEBUG] = handle_vcpu_debug,
b024b793
XZ		 528
529};
530
531static const int kvm_vti_max_exit_handlers =
532 sizeof(kvm_vti_exit_handlers)/sizeof(*kvm_vti_exit_handlers);
533
b024b793
XZ		 534static uint32_t kvm_get_exit_reason(struct kvm_vcpu *vcpu)
535{
536 struct exit_ctl_data *p_exit_data;
537
538 p_exit_data = kvm_get_exit_data(vcpu);
539 return p_exit_data->exit_reason;
540}
541
542/*
543 * The guest has exited. See if we can fix it or if we need userspace
544 * assistance.
545 */
546static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
547{
548 u32 exit_reason = kvm_get_exit_reason(vcpu);
549 vcpu->arch.last_exit = exit_reason;
550
551 if (exit_reason < kvm_vti_max_exit_handlers
552 && kvm_vti_exit_handlers[exit_reason])
553 return kvm_vti_exit_handlers[exit_reason](vcpu, kvm_run);
554 else {
555 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
556 kvm_run->hw.hardware_exit_reason = exit_reason;
557 }
558 return 0;
559}
560
561static inline void vti_set_rr6(unsigned long rr6)
562{
563 ia64_set_rr(RR6, rr6);
564 ia64_srlz_i();
565}
566
567static int kvm_insert_vmm_mapping(struct kvm_vcpu *vcpu)
568{
569 unsigned long pte;
570 struct kvm *kvm = vcpu->kvm;
571 int r;
572
573 /*Insert a pair of tr to map vmm*/
574 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL));
575 r = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
576 if (r < 0)
577 goto out;
578 vcpu->arch.vmm_tr_slot = r;
579 /*Insert a pairt of tr to map data of vm*/
580 pte = pte_val(mk_pte_phys(__pa(kvm->arch.vm_base), PAGE_KERNEL));
581 r = ia64_itr_entry(0x3, KVM_VM_DATA_BASE,
582 pte, KVM_VM_DATA_SHIFT);
583 if (r < 0)
584 goto out;
585 vcpu->arch.vm_tr_slot = r;
0c72ea7f
JS		 586
587#if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
588 if (kvm->arch.is_sn2) {
589 r = kvm_sn2_setup_mappings(vcpu);
590 if (r < 0)
591 goto out;
592 }
593#endif
594
b024b793
XZ		 595 r = 0;
596out:
597 return r;
b024b793
XZ		 598}
599
600static void kvm_purge_vmm_mapping(struct kvm_vcpu *vcpu)
601{
0c72ea7f 602 struct kvm *kvm = vcpu->kvm;
b024b793
XZ		 603 ia64_ptr_entry(0x3, vcpu->arch.vmm_tr_slot);
604 ia64_ptr_entry(0x3, vcpu->arch.vm_tr_slot);
0c72ea7f
JS		 605#if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
606 if (kvm->arch.is_sn2)
607 ia64_ptr_entry(0x3, vcpu->arch.sn_rtc_tr_slot);
608#endif
b024b793
XZ		 609}
610
611static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu)
612{
4d13c3b0
JS		 613 unsigned long psr;
614 int r;
b024b793
XZ		 615 int cpu = smp_processor_id();
616
617 if (vcpu->arch.last_run_cpu != cpu ||
618 per_cpu(last_vcpu, cpu) != vcpu) {
619 per_cpu(last_vcpu, cpu) = vcpu;
620 vcpu->arch.last_run_cpu = cpu;
621 kvm_flush_tlb_all();
622 }
623
624 vcpu->arch.host_rr6 = ia64_get_rr(RR6);
625 vti_set_rr6(vcpu->arch.vmm_rr);
4d13c3b0
JS		 626 local_irq_save(psr);
627 r = kvm_insert_vmm_mapping(vcpu);
628 local_irq_restore(psr);
629 return r;
b024b793 630}
c6b60c69 631
b024b793
XZ		 632static void kvm_vcpu_post_transition(struct kvm_vcpu *vcpu)
633{
634 kvm_purge_vmm_mapping(vcpu);
635 vti_set_rr6(vcpu->arch.host_rr6);
636}
637
c6b60c69 638static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
b024b793
XZ		 639{
640 union context *host_ctx, *guest_ctx;
f656ce01 641 int r, idx;
b024b793 642
f656ce01 643 idx = srcu_read_lock(&vcpu->kvm->srcu);
b024b793
XZ		 644
645again:
b024b793 646 if (signal_pending(current)) {
b024b793
XZ		 647 r = -EINTR;
648 kvm_run->exit_reason = KVM_EXIT_INTR;
649 goto out;
650 }
651
d24d2c1c
JS		 652 preempt_disable();
653 local_irq_disable();
654
c6b60c69
JS		 655 /*Get host and guest context with guest address space.*/
656 host_ctx = kvm_get_host_context(vcpu);
657 guest_ctx = kvm_get_guest_context(vcpu);
658
32f88400 659 clear_bit(KVM_REQ_KICK, &vcpu->requests);
c6b60c69
JS		 660
661 r = kvm_vcpu_pre_transition(vcpu);
662 if (r < 0)
663 goto vcpu_run_fail;
664
f656ce01 665 srcu_read_unlock(&vcpu->kvm->srcu, idx);
6b7e2d09 666 vcpu->mode = IN_GUEST_MODE;
b024b793 667 kvm_guest_enter();
c6b60c69
JS		 668
669 /*
670 * Transition to the guest
671 */
672 kvm_vmm_info->tramp_entry(host_ctx, guest_ctx);
673
674 kvm_vcpu_post_transition(vcpu);
b024b793
XZ		 675
676 vcpu->arch.launched = 1;
32f88400 677 set_bit(KVM_REQ_KICK, &vcpu->requests);
b024b793
XZ		 678 local_irq_enable();
679
680 /*
681 * We must have an instruction between local_irq_enable() and
682 * kvm_guest_exit(), so the timer interrupt isn't delayed by
683 * the interrupt shadow. The stat.exits increment will do nicely.
684 * But we need to prevent reordering, hence this barrier():
685 */
686 barrier();
b024b793 687 kvm_guest_exit();
6b7e2d09 688 vcpu->mode = OUTSIDE_GUEST_MODE;
b024b793
XZ		 689 preempt_enable();
690
f656ce01 691 idx = srcu_read_lock(&vcpu->kvm->srcu);
c6b60c69 692
b024b793
XZ		 693 r = kvm_handle_exit(kvm_run, vcpu);
694
695 if (r > 0) {
696 if (!need_resched())
697 goto again;
698 }
699
700out:
f656ce01 701 srcu_read_unlock(&vcpu->kvm->srcu, idx);
b024b793
XZ		 702 if (r > 0) {
703 kvm_resched(vcpu);
f656ce01 704 idx = srcu_read_lock(&vcpu->kvm->srcu);
b024b793
XZ		 705 goto again;
706 }
707
708 return r;
c6b60c69
JS		 709
710vcpu_run_fail:
711 local_irq_enable();
712 preempt_enable();
713 kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
714 goto out;
b024b793
XZ		 715}
716
717static void kvm_set_mmio_data(struct kvm_vcpu *vcpu)
718{
719 struct kvm_mmio_req *p = kvm_get_vcpu_ioreq(vcpu);
720
721 if (!vcpu->mmio_is_write)
f78146b0 722 memcpy(&p->data, vcpu->arch.mmio_data, 8);
b024b793
XZ		 723 p->state = STATE_IORESP_READY;
724}
725
726int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
727{
728 int r;
729 sigset_t sigsaved;
730
a2e4e289
XZ		 731 if (vcpu->sigset_active)
732 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
733
a4535290 734 if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) {
b024b793 735 kvm_vcpu_block(vcpu);
decc9016 736 clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
a2e4e289
XZ		 737 r = -EAGAIN;
738 goto out;
b024b793
XZ		 739 }
740
b024b793 741 if (vcpu->mmio_needed) {
f78146b0 742 memcpy(vcpu->arch.mmio_data, kvm_run->mmio.data, 8);
b024b793
XZ		 743 kvm_set_mmio_data(vcpu);
744 vcpu->mmio_read_completed = 1;
745 vcpu->mmio_needed = 0;
746 }
747 r = __vcpu_run(vcpu, kvm_run);
a2e4e289 748out:
b024b793
XZ		 749 if (vcpu->sigset_active)
750 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
751
b024b793
XZ		 752 return r;
753}
754
d89f5eff 755struct kvm *kvm_arch_alloc_vm(void)
b024b793
XZ		 756{
757
758 struct kvm *kvm;
759 uint64_t vm_base;
760
a917f7af
XZ		 761 BUG_ON(sizeof(struct kvm) > KVM_VM_STRUCT_SIZE);
762
b024b793
XZ		 763 vm_base = __get_free_pages(GFP_KERNEL, get_order(KVM_VM_DATA_SIZE));
764
765 if (!vm_base)
d89f5eff 766 return NULL;
b024b793 767
b024b793 768 memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
a917f7af
XZ		 769 kvm = (struct kvm *)(vm_base +
770 offsetof(struct kvm_vm_data, kvm_vm_struct));
b024b793 771 kvm->arch.vm_base = vm_base;
a917f7af 772 printk(KERN_DEBUG"kvm: vm's data area:0x%lx\n", vm_base);
b024b793
XZ		 773
774 return kvm;
775}
776
60f9a9ef 777struct kvm_ia64_io_range {
b024b793
XZ		 778 unsigned long start;
779 unsigned long size;
780 unsigned long type;
781};
782
60f9a9ef 783static const struct kvm_ia64_io_range io_ranges[] = {
b024b793
XZ		 784 {VGA_IO_START, VGA_IO_SIZE, GPFN_FRAME_BUFFER},
785 {MMIO_START, MMIO_SIZE, GPFN_LOW_MMIO},
786 {LEGACY_IO_START, LEGACY_IO_SIZE, GPFN_LEGACY_IO},
787 {IO_SAPIC_START, IO_SAPIC_SIZE, GPFN_IOSAPIC},
788 {PIB_START, PIB_SIZE, GPFN_PIB},
789};
790
791static void kvm_build_io_pmt(struct kvm *kvm)
792{
793 unsigned long i, j;
794
795 /* Mark I/O ranges */
796 for (i = 0; i < (sizeof(io_ranges) / sizeof(struct kvm_io_range));
797 i++) {
798 for (j = io_ranges[i].start;
799 j < io_ranges[i].start + io_ranges[i].size;
800 j += PAGE_SIZE)
801 kvm_set_pmt_entry(kvm, j >> PAGE_SHIFT,
802 io_ranges[i].type, 0);
803 }
804
805}
806
807/*Use unused rids to virtualize guest rid.*/
808#define GUEST_PHYSICAL_RR0 0x1739
809#define GUEST_PHYSICAL_RR4 0x2739
810#define VMM_INIT_RR 0x1660
811
e08b9637 812int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
b024b793 813{
b024b793
XZ		 814 BUG_ON(!kvm);
815
e08b9637
CO		 816 if (type)
817 return -EINVAL;
818
d89f5eff
JK		 819 kvm->arch.is_sn2 = ia64_platform_is("sn2");
820
b024b793
XZ		 821 kvm->arch.metaphysical_rr0 = GUEST_PHYSICAL_RR0;
822 kvm->arch.metaphysical_rr4 = GUEST_PHYSICAL_RR4;
823 kvm->arch.vmm_init_rr = VMM_INIT_RR;
824
b024b793
XZ		 825 /*
826 *Fill P2M entries for MMIO/IO ranges
827 */
828 kvm_build_io_pmt(kvm);
829
2381ad24 830 INIT_LIST_HEAD(&kvm->arch.assigned_dev_head);
5550af4d
SY		 831
832 /* Reserve bit 0 of irq_sources_bitmap for userspace irq source */
833 set_bit(KVM_USERSPACE_IRQ_SOURCE_ID, &kvm->arch.irq_sources_bitmap);
b024b793 834
d89f5eff 835 return 0;
b024b793
XZ		 836}
837
838static int kvm_vm_ioctl_get_irqchip(struct kvm *kvm,
839 struct kvm_irqchip *chip)
840{
841 int r;
842
843 r = 0;
844 switch (chip->chip_id) {
845 case KVM_IRQCHIP_IOAPIC:
eba0226b 846 r = kvm_get_ioapic(kvm, &chip->chip.ioapic);
b024b793
XZ		 847 break;
848 default:
849 r = -EINVAL;
850 break;
851 }
852 return r;
853}
854
855static int kvm_vm_ioctl_set_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
856{
857 int r;
858
859 r = 0;
860 switch (chip->chip_id) {
861 case KVM_IRQCHIP_IOAPIC:
eba0226b 862 r = kvm_set_ioapic(kvm, &chip->chip.ioapic);
b024b793
XZ		 863 break;
864 default:
865 r = -EINVAL;
866 break;
867 }
868 return r;
869}
870
871#define RESTORE_REGS(_x) vcpu->arch._x = regs->_x
872
873int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
874{
b024b793 875 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
042b26ed 876 int i;
b024b793 877
b024b793
XZ		 878 for (i = 0; i < 16; i++) {
879 vpd->vgr[i] = regs->vpd.vgr[i];
880 vpd->vbgr[i] = regs->vpd.vbgr[i];
881 }
882 for (i = 0; i < 128; i++)
883 vpd->vcr[i] = regs->vpd.vcr[i];
884 vpd->vhpi = regs->vpd.vhpi;
885 vpd->vnat = regs->vpd.vnat;
886 vpd->vbnat = regs->vpd.vbnat;
887 vpd->vpsr = regs->vpd.vpsr;
888
889 vpd->vpr = regs->vpd.vpr;
890
042b26ed 891 memcpy(&vcpu->arch.guest, &regs->saved_guest, sizeof(union context));
b024b793
XZ		 892
893 RESTORE_REGS(mp_state);
894 RESTORE_REGS(vmm_rr);
895 memcpy(vcpu->arch.itrs, regs->itrs, sizeof(struct thash_data) * NITRS);
896 memcpy(vcpu->arch.dtrs, regs->dtrs, sizeof(struct thash_data) * NDTRS);
897 RESTORE_REGS(itr_regions);
898 RESTORE_REGS(dtr_regions);
899 RESTORE_REGS(tc_regions);
900 RESTORE_REGS(irq_check);
901 RESTORE_REGS(itc_check);
902 RESTORE_REGS(timer_check);
903 RESTORE_REGS(timer_pending);
904 RESTORE_REGS(last_itc);
905 for (i = 0; i < 8; i++) {
906 vcpu->arch.vrr[i] = regs->vrr[i];
907 vcpu->arch.ibr[i] = regs->ibr[i];
908 vcpu->arch.dbr[i] = regs->dbr[i];
909 }
910 for (i = 0; i < 4; i++)
911 vcpu->arch.insvc[i] = regs->insvc[i];
912 RESTORE_REGS(xtp);
913 RESTORE_REGS(metaphysical_rr0);
914 RESTORE_REGS(metaphysical_rr4);
915 RESTORE_REGS(metaphysical_saved_rr0);
916 RESTORE_REGS(metaphysical_saved_rr4);
917 RESTORE_REGS(fp_psr);
918 RESTORE_REGS(saved_gp);
919
920 vcpu->arch.irq_new_pending = 1;
c6c9fcdf 921 vcpu->arch.itc_offset = regs->saved_itc - kvm_get_itc(vcpu);
b024b793
XZ		 922 set_bit(KVM_REQ_RESUME, &vcpu->requests);
923
042b26ed 924 return 0;
b024b793
XZ		 925}
926
23d43cf9
CD		 927int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event)
928{
929 if (!irqchip_in_kernel(kvm))
930 return -ENXIO;
931
932 irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
933 irq_event->irq, irq_event->level);
934 return 0;
935}
936
b024b793
XZ		 937long kvm_arch_vm_ioctl(struct file *filp,
938 unsigned int ioctl, unsigned long arg)
939{
940 struct kvm *kvm = filp->private_data;
941 void __user *argp = (void __user *)arg;
367e1319 942 int r = -ENOTTY;
b024b793
XZ		 943
944 switch (ioctl) {
945 case KVM_SET_MEMORY_REGION: {
946 struct kvm_memory_region kvm_mem;
947 struct kvm_userspace_memory_region kvm_userspace_mem;
948
949 r = -EFAULT;
950 if (copy_from_user(&kvm_mem, argp, sizeof kvm_mem))
951 goto out;
952 kvm_userspace_mem.slot = kvm_mem.slot;
953 kvm_userspace_mem.flags = kvm_mem.flags;
954 kvm_userspace_mem.guest_phys_addr =
955 kvm_mem.guest_phys_addr;
956 kvm_userspace_mem.memory_size = kvm_mem.memory_size;
957 r = kvm_vm_ioctl_set_memory_region(kvm,
958 &kvm_userspace_mem, 0);
959 if (r)
960 goto out;
961 break;
962 }
963 case KVM_CREATE_IRQCHIP:
964 r = -EFAULT;
965 r = kvm_ioapic_init(kvm);
966 if (r)
967 goto out;
399ec807
AK		 968 r = kvm_setup_default_irq_routing(kvm);
969 if (r) {
175504cd 970 mutex_lock(&kvm->slots_lock);
4b7bb921 971 kvm_ioapic_destroy(kvm);
175504cd 972 mutex_unlock(&kvm->slots_lock);
399ec807
AK		 973 goto out;
974 }
b024b793 975 break;
b024b793
XZ		 976 case KVM_GET_IRQCHIP: {
977 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
978 struct kvm_irqchip chip;
979
980 r = -EFAULT;
981 if (copy_from_user(&chip, argp, sizeof chip))
982 goto out;
983 r = -ENXIO;
984 if (!irqchip_in_kernel(kvm))
985 goto out;
986 r = kvm_vm_ioctl_get_irqchip(kvm, &chip);
987 if (r)
988 goto out;
989 r = -EFAULT;
990 if (copy_to_user(argp, &chip, sizeof chip))
991 goto out;
992 r = 0;
993 break;
994 }
995 case KVM_SET_IRQCHIP: {
996 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
997 struct kvm_irqchip chip;
998
999 r = -EFAULT;
1000 if (copy_from_user(&chip, argp, sizeof chip))
1001 goto out;
1002 r = -ENXIO;
1003 if (!irqchip_in_kernel(kvm))
1004 goto out;
1005 r = kvm_vm_ioctl_set_irqchip(kvm, &chip);
1006 if (r)
1007 goto out;
1008 r = 0;
1009 break;
1010 }
1011 default:
1012 ;
1013 }
1014out:
1015 return r;
1016}
1017
1018int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
1019 struct kvm_sregs *sregs)
1020{
1021 return -EINVAL;
1022}
1023
1024int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
1025 struct kvm_sregs *sregs)
1026{
1027 return -EINVAL;
1028
1029}
1030int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
1031 struct kvm_translation *tr)
1032{
1033
1034 return -EINVAL;
1035}
1036
1037static int kvm_alloc_vmm_area(void)
1038{
1039 if (!kvm_vmm_base && (kvm_vm_buffer_size < KVM_VM_BUFFER_SIZE)) {
1040 kvm_vmm_base = __get_free_pages(GFP_KERNEL,
1041 get_order(KVM_VMM_SIZE));
1042 if (!kvm_vmm_base)
1043 return -ENOMEM;
1044
1045 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1046 kvm_vm_buffer = kvm_vmm_base + VMM_SIZE;
1047
1048 printk(KERN_DEBUG"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n",
1049 kvm_vmm_base, kvm_vm_buffer);
1050 }
1051
1052 return 0;
1053}
1054
1055static void kvm_free_vmm_area(void)
1056{
1057 if (kvm_vmm_base) {
1058 /*Zero this area before free to avoid bits leak!!*/
1059 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1060 free_pages(kvm_vmm_base, get_order(KVM_VMM_SIZE));
1061 kvm_vmm_base = 0;
1062 kvm_vm_buffer = 0;
1063 kvm_vsa_base = 0;
1064 }
1065}
1066
b024b793
XZ		 1067static int vti_init_vpd(struct kvm_vcpu *vcpu)
1068{
1069 int i;
1070 union cpuid3_t cpuid3;
1071 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1072
1073 if (IS_ERR(vpd))
1074 return PTR_ERR(vpd);
1075
1076 /* CPUID init */
1077 for (i = 0; i < 5; i++)
1078 vpd->vcpuid[i] = ia64_get_cpuid(i);
1079
1080 /* Limit the CPUID number to 5 */
1081 cpuid3.value = vpd->vcpuid[3];
1082 cpuid3.number = 4; /* 5 - 1 */
1083 vpd->vcpuid[3] = cpuid3.value;
1084
1085 /*Set vac and vdc fields*/
1086 vpd->vac.a_from_int_cr = 1;
1087 vpd->vac.a_to_int_cr = 1;
1088 vpd->vac.a_from_psr = 1;
1089 vpd->vac.a_from_cpuid = 1;
1090 vpd->vac.a_cover = 1;
1091 vpd->vac.a_bsw = 1;
1092 vpd->vac.a_int = 1;
1093 vpd->vdc.d_vmsw = 1;
1094
1095 /*Set virtual buffer*/
1096 vpd->virt_env_vaddr = KVM_VM_BUFFER_BASE;
1097
1098 return 0;
1099}
1100
1101static int vti_create_vp(struct kvm_vcpu *vcpu)
1102{
1103 long ret;
1104 struct vpd *vpd = vcpu->arch.vpd;
1105 unsigned long vmm_ivt;
1106
1107 vmm_ivt = kvm_vmm_info->vmm_ivt;
1108
1109 printk(KERN_DEBUG "kvm: vcpu:%p,ivt: 0x%lx\n", vcpu, vmm_ivt);
1110
1111 ret = ia64_pal_vp_create((u64 *)vpd, (u64 *)vmm_ivt, 0);
1112
1113 if (ret) {
1114 printk(KERN_ERR"kvm: ia64_pal_vp_create failed!\n");
1115 return -EINVAL;
1116 }
1117 return 0;
1118}
1119
1120static void init_ptce_info(struct kvm_vcpu *vcpu)
1121{
1122 ia64_ptce_info_t ptce = {0};
1123
1124 ia64_get_ptce(&ptce);
1125 vcpu->arch.ptce_base = ptce.base;
1126 vcpu->arch.ptce_count[0] = ptce.count[0];
1127 vcpu->arch.ptce_count[1] = ptce.count[1];
1128 vcpu->arch.ptce_stride[0] = ptce.stride[0];
1129 vcpu->arch.ptce_stride[1] = ptce.stride[1];
1130}
1131
1132static void kvm_migrate_hlt_timer(struct kvm_vcpu *vcpu)
1133{
1134 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
1135
1136 if (hrtimer_cancel(p_ht))
18dd36af 1137 hrtimer_start_expires(p_ht, HRTIMER_MODE_ABS);
b024b793
XZ		 1138}
1139
1140static enum hrtimer_restart hlt_timer_fn(struct hrtimer *data)
1141{
1142 struct kvm_vcpu *vcpu;
1143 wait_queue_head_t *q;
1144
1145 vcpu = container_of(data, struct kvm_vcpu, arch.hlt_timer);
decc9016
XZ		 1146 q = &vcpu->wq;
1147
a4535290 1148 if (vcpu->arch.mp_state != KVM_MP_STATE_HALTED)
b024b793
XZ		 1149 goto out;
1150
decc9016 1151 if (waitqueue_active(q))
b024b793 1152 wake_up_interruptible(q);
decc9016 1153
b024b793 1154out:
decc9016 1155 vcpu->arch.timer_fired = 1;
b024b793
XZ		 1156 vcpu->arch.timer_check = 1;
1157 return HRTIMER_NORESTART;
1158}
1159
1160#define PALE_RESET_ENTRY 0x80000000ffffffb0UL
1161
3e515705
AK		 1162bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu)
1163{
8281715b 1164 return irqchip_in_kernel(vcpu->kvm) == (vcpu->arch.apic != NULL);
3e515705
AK		 1165}
1166
b024b793
XZ		 1167int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
1168{
1169 struct kvm_vcpu *v;
1170 int r;
1171 int i;
1172 long itc_offset;
1173 struct kvm *kvm = vcpu->kvm;
1174 struct kvm_pt_regs *regs = vcpu_regs(vcpu);
1175
1176 union context *p_ctx = &vcpu->arch.guest;
1177 struct kvm_vcpu *vmm_vcpu = to_guest(vcpu->kvm, vcpu);
1178
1179 /*Init vcpu context for first run.*/
1180 if (IS_ERR(vmm_vcpu))
1181 return PTR_ERR(vmm_vcpu);
1182
c5af89b6 1183 if (kvm_vcpu_is_bsp(vcpu)) {
a4535290 1184 vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
b024b793
XZ		 1185
1186 /*Set entry address for first run.*/
1187 regs->cr_iip = PALE_RESET_ENTRY;
1188
a917f7af 1189 /*Initialize itc offset for vcpus*/
c6c9fcdf 1190 itc_offset = 0UL - kvm_get_itc(vcpu);
3032b925 1191 for (i = 0; i < KVM_MAX_VCPUS; i++) {
a917f7af
XZ		 1192 v = (struct kvm_vcpu *)((char *)vcpu +
1193 sizeof(struct kvm_vcpu_data) * i);
b024b793
XZ		 1194 v->arch.itc_offset = itc_offset;
1195 v->arch.last_itc = 0;
1196 }
1197 } else
a4535290 1198 vcpu->arch.mp_state = KVM_MP_STATE_UNINITIALIZED;
b024b793
XZ		 1199
1200 r = -ENOMEM;
1201 vcpu->arch.apic = kzalloc(sizeof(struct kvm_lapic), GFP_KERNEL);
1202 if (!vcpu->arch.apic)
1203 goto out;
1204 vcpu->arch.apic->vcpu = vcpu;
1205
1206 p_ctx->gr[1] = 0;
a917f7af 1207 p_ctx->gr[12] = (unsigned long)((char *)vmm_vcpu + KVM_STK_OFFSET);
b024b793
XZ		 1208 p_ctx->gr[13] = (unsigned long)vmm_vcpu;
1209 p_ctx->psr = 0x1008522000UL;
1210 p_ctx->ar[40] = FPSR_DEFAULT; /*fpsr*/
1211 p_ctx->caller_unat = 0;
1212 p_ctx->pr = 0x0;
1213 p_ctx->ar[36] = 0x0; /*unat*/
1214 p_ctx->ar[19] = 0x0; /*rnat*/
1215 p_ctx->ar[18] = (unsigned long)vmm_vcpu +
1216 ((sizeof(struct kvm_vcpu)+15) & ~15);
1217 p_ctx->ar[64] = 0x0; /*pfs*/
1218 p_ctx->cr[0] = 0x7e04UL;
1219 p_ctx->cr[2] = (unsigned long)kvm_vmm_info->vmm_ivt;
1220 p_ctx->cr[8] = 0x3c;
1221
421f91d2 1222 /*Initialize region register*/
b024b793
XZ		 1223 p_ctx->rr[0] = 0x30;
1224 p_ctx->rr[1] = 0x30;
1225 p_ctx->rr[2] = 0x30;
1226 p_ctx->rr[3] = 0x30;
1227 p_ctx->rr[4] = 0x30;
1228 p_ctx->rr[5] = 0x30;
1229 p_ctx->rr[7] = 0x30;
1230
421f91d2 1231 /*Initialize branch register 0*/
b024b793
XZ		 1232 p_ctx->br[0] = *(unsigned long *)kvm_vmm_info->vmm_entry;
1233
1234 vcpu->arch.vmm_rr = kvm->arch.vmm_init_rr;
1235 vcpu->arch.metaphysical_rr0 = kvm->arch.metaphysical_rr0;
1236 vcpu->arch.metaphysical_rr4 = kvm->arch.metaphysical_rr4;
1237
1238 hrtimer_init(&vcpu->arch.hlt_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
1239 vcpu->arch.hlt_timer.function = hlt_timer_fn;
1240
1241 vcpu->arch.last_run_cpu = -1;
a917f7af 1242 vcpu->arch.vpd = (struct vpd *)VPD_BASE(vcpu->vcpu_id);
b024b793
XZ		 1243 vcpu->arch.vsa_base = kvm_vsa_base;
1244 vcpu->arch.__gp = kvm_vmm_gp;
1245 vcpu->arch.dirty_log_lock_pa = __pa(&kvm->arch.dirty_log_lock);
a917f7af
XZ		 1246 vcpu->arch.vhpt.hash = (struct thash_data *)VHPT_BASE(vcpu->vcpu_id);
1247 vcpu->arch.vtlb.hash = (struct thash_data *)VTLB_BASE(vcpu->vcpu_id);
b024b793
XZ		 1248 init_ptce_info(vcpu);
1249
1250 r = 0;
1251out:
1252 return r;
1253}
1254
1255static int vti_vcpu_setup(struct kvm_vcpu *vcpu, int id)
1256{
1257 unsigned long psr;
1258 int r;
1259
1260 local_irq_save(psr);
1261 r = kvm_insert_vmm_mapping(vcpu);
457459c3 1262 local_irq_restore(psr);
b024b793
XZ		 1263 if (r)
1264 goto fail;
1265 r = kvm_vcpu_init(vcpu, vcpu->kvm, id);
1266 if (r)
1267 goto fail;
1268
1269 r = vti_init_vpd(vcpu);
1270 if (r) {
1271 printk(KERN_DEBUG"kvm: vpd init error!!\n");
1272 goto uninit;
1273 }
1274
1275 r = vti_create_vp(vcpu);
1276 if (r)
1277 goto uninit;
1278
1279 kvm_purge_vmm_mapping(vcpu);
b024b793
XZ		 1280
1281 return 0;
1282uninit:
1283 kvm_vcpu_uninit(vcpu);
1284fail:
1285 return r;
1286}
1287
1288struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
1289 unsigned int id)
1290{
1291 struct kvm_vcpu *vcpu;
1292 unsigned long vm_base = kvm->arch.vm_base;
1293 int r;
1294 int cpu;
1295
a917f7af
XZ		 1296 BUG_ON(sizeof(struct kvm_vcpu) > VCPU_STRUCT_SIZE/2);
1297
1298 r = -EINVAL;
1299 if (id >= KVM_MAX_VCPUS) {
1300 printk(KERN_ERR"kvm: Can't configure vcpus > %ld",
1301 KVM_MAX_VCPUS);
1302 goto fail;
1303 }
1304
b024b793
XZ		 1305 r = -ENOMEM;
1306 if (!vm_base) {
1307 printk(KERN_ERR"kvm: Create vcpu[%d] error!\n", id);
1308 goto fail;
1309 }
a917f7af
XZ		 1310 vcpu = (struct kvm_vcpu *)(vm_base + offsetof(struct kvm_vm_data,
1311 vcpu_data[id].vcpu_struct));
b024b793
XZ		 1312 vcpu->kvm = kvm;
1313
1314 cpu = get_cpu();
b024b793
XZ		 1315 r = vti_vcpu_setup(vcpu, id);
1316 put_cpu();
1317
1318 if (r) {
1319 printk(KERN_DEBUG"kvm: vcpu_setup error!!\n");
1320 goto fail;
1321 }
1322
1323 return vcpu;
1324fail:
1325 return ERR_PTR(r);
1326}
1327
1328int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
1329{
1330 return 0;
1331}
1332
1333int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1334{
1335 return -EINVAL;
1336}
1337
1338int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1339{
1340 return -EINVAL;
1341}
1342
d0bfb940
JK		 1343int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
1344 struct kvm_guest_debug *dbg)
b024b793
XZ		 1345{
1346 return -EINVAL;
1347}
1348
d89f5eff 1349void kvm_arch_free_vm(struct kvm *kvm)
b024b793
XZ		 1350{
1351 unsigned long vm_base = kvm->arch.vm_base;
1352
1353 if (vm_base) {
1354 memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
1355 free_pages(vm_base, get_order(KVM_VM_DATA_SIZE));
1356 }
1357
1358}
1359
1360static void kvm_release_vm_pages(struct kvm *kvm)
1361{
46a26bf5 1362 struct kvm_memslots *slots;
b024b793 1363 struct kvm_memory_slot *memslot;
be6ba0f0 1364 int j;
b024b793
XZ		 1365 unsigned long base_gfn;
1366
90d83dc3 1367 slots = kvm_memslots(kvm);
be6ba0f0 1368 kvm_for_each_memslot(memslot, slots) {
b024b793 1369 base_gfn = memslot->base_gfn;
b024b793
XZ		 1370 for (j = 0; j < memslot->npages; j++) {
1371 if (memslot->rmap[j])
1372 put_page((struct page *)memslot->rmap[j]);
1373 }
1374 }
1375}
1376
ad8ba2cd
SY		 1377void kvm_arch_sync_events(struct kvm *kvm)
1378{
1379}
1380
b024b793
XZ		 1381void kvm_arch_destroy_vm(struct kvm *kvm)
1382{
2381ad24
XZ		 1383 kvm_iommu_unmap_guest(kvm);
1384#ifdef KVM_CAP_DEVICE_ASSIGNMENT
1385 kvm_free_all_assigned_devices(kvm);
1386#endif
b024b793
XZ		 1387 kfree(kvm->arch.vioapic);
1388 kvm_release_vm_pages(kvm);
b024b793
XZ		 1389}
1390
1391void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
1392{
1393}
1394
1395void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
1396{
1397 if (cpu != vcpu->cpu) {
1398 vcpu->cpu = cpu;
1399 if (vcpu->arch.ht_active)
1400 kvm_migrate_hlt_timer(vcpu);
1401 }
1402}
1403
1404#define SAVE_REGS(_x) regs->_x = vcpu->arch._x
1405
1406int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1407{
b024b793 1408 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
042b26ed
JS		 1409 int i;
1410
b024b793
XZ		 1411 vcpu_load(vcpu);
1412
1413 for (i = 0; i < 16; i++) {
1414 regs->vpd.vgr[i] = vpd->vgr[i];
1415 regs->vpd.vbgr[i] = vpd->vbgr[i];
1416 }
1417 for (i = 0; i < 128; i++)
1418 regs->vpd.vcr[i] = vpd->vcr[i];
1419 regs->vpd.vhpi = vpd->vhpi;
1420 regs->vpd.vnat = vpd->vnat;
1421 regs->vpd.vbnat = vpd->vbnat;
1422 regs->vpd.vpsr = vpd->vpsr;
1423 regs->vpd.vpr = vpd->vpr;
1424
042b26ed
JS		 1425 memcpy(&regs->saved_guest, &vcpu->arch.guest, sizeof(union context));
1426
b024b793
XZ		 1427 SAVE_REGS(mp_state);
1428 SAVE_REGS(vmm_rr);
1429 memcpy(regs->itrs, vcpu->arch.itrs, sizeof(struct thash_data) * NITRS);
1430 memcpy(regs->dtrs, vcpu->arch.dtrs, sizeof(struct thash_data) * NDTRS);
1431 SAVE_REGS(itr_regions);
1432 SAVE_REGS(dtr_regions);
1433 SAVE_REGS(tc_regions);
1434 SAVE_REGS(irq_check);
1435 SAVE_REGS(itc_check);
1436 SAVE_REGS(timer_check);
1437 SAVE_REGS(timer_pending);
1438 SAVE_REGS(last_itc);
1439 for (i = 0; i < 8; i++) {
1440 regs->vrr[i] = vcpu->arch.vrr[i];
1441 regs->ibr[i] = vcpu->arch.ibr[i];
1442 regs->dbr[i] = vcpu->arch.dbr[i];
1443 }
1444 for (i = 0; i < 4; i++)
1445 regs->insvc[i] = vcpu->arch.insvc[i];
c6c9fcdf 1446 regs->saved_itc = vcpu->arch.itc_offset + kvm_get_itc(vcpu);
b024b793
XZ		 1447 SAVE_REGS(xtp);
1448 SAVE_REGS(metaphysical_rr0);
1449 SAVE_REGS(metaphysical_rr4);
1450 SAVE_REGS(metaphysical_saved_rr0);
1451 SAVE_REGS(metaphysical_saved_rr4);
1452 SAVE_REGS(fp_psr);
1453 SAVE_REGS(saved_gp);
042b26ed 1454
b024b793 1455 vcpu_put(vcpu);
042b26ed 1456 return 0;
b024b793
XZ		 1457}
1458
e9a999fe
JS		 1459int kvm_arch_vcpu_ioctl_get_stack(struct kvm_vcpu *vcpu,
1460 struct kvm_ia64_vcpu_stack *stack)
1461{
1462 memcpy(stack, vcpu, sizeof(struct kvm_ia64_vcpu_stack));
1463 return 0;
1464}
1465
1466int kvm_arch_vcpu_ioctl_set_stack(struct kvm_vcpu *vcpu,
1467 struct kvm_ia64_vcpu_stack *stack)
1468{
1469 memcpy(vcpu + 1, &stack->stack[0] + sizeof(struct kvm_vcpu),
1470 sizeof(struct kvm_ia64_vcpu_stack) - sizeof(struct kvm_vcpu));
1471
1472 vcpu->arch.exit_data = ((struct kvm_vcpu *)stack)->arch.exit_data;
1473 return 0;
1474}
1475
b024b793
XZ		 1476void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
1477{
1478
1479 hrtimer_cancel(&vcpu->arch.hlt_timer);
1480 kfree(vcpu->arch.apic);
1481}
1482
1483
1484long kvm_arch_vcpu_ioctl(struct file *filp,
e9a999fe 1485 unsigned int ioctl, unsigned long arg)
b024b793 1486{
e9a999fe
JS		 1487 struct kvm_vcpu *vcpu = filp->private_data;
1488 void __user *argp = (void __user *)arg;
1489 struct kvm_ia64_vcpu_stack *stack = NULL;
1490 long r;
1491
1492 switch (ioctl) {
1493 case KVM_IA64_VCPU_GET_STACK: {
1494 struct kvm_ia64_vcpu_stack __user *user_stack;
1495 void __user *first_p = argp;
1496
1497 r = -EFAULT;
1498 if (copy_from_user(&user_stack, first_p, sizeof(void *)))
1499 goto out;
1500
1501 if (!access_ok(VERIFY_WRITE, user_stack,
1502 sizeof(struct kvm_ia64_vcpu_stack))) {
1503 printk(KERN_INFO "KVM_IA64_VCPU_GET_STACK: "
1504 "Illegal user destination address for stack\n");
1505 goto out;
1506 }
1507 stack = kzalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL);
1508 if (!stack) {
1509 r = -ENOMEM;
1510 goto out;
1511 }
1512
1513 r = kvm_arch_vcpu_ioctl_get_stack(vcpu, stack);
1514 if (r)
1515 goto out;
1516
1517 if (copy_to_user(user_stack, stack,
5c0d0920
WY		 1518 sizeof(struct kvm_ia64_vcpu_stack))) {
1519 r = -EFAULT;
e9a999fe 1520 goto out;
5c0d0920 1521 }
e9a999fe
JS		 1522
1523 break;
1524 }
1525 case KVM_IA64_VCPU_SET_STACK: {
1526 struct kvm_ia64_vcpu_stack __user *user_stack;
1527 void __user *first_p = argp;
1528
1529 r = -EFAULT;
1530 if (copy_from_user(&user_stack, first_p, sizeof(void *)))
1531 goto out;
1532
1533 if (!access_ok(VERIFY_READ, user_stack,
1534 sizeof(struct kvm_ia64_vcpu_stack))) {
1535 printk(KERN_INFO "KVM_IA64_VCPU_SET_STACK: "
1536 "Illegal user address for stack\n");
1537 goto out;
1538 }
1539 stack = kmalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL);
1540 if (!stack) {
1541 r = -ENOMEM;
1542 goto out;
1543 }
1544 if (copy_from_user(stack, user_stack,
1545 sizeof(struct kvm_ia64_vcpu_stack)))
1546 goto out;
1547
1548 r = kvm_arch_vcpu_ioctl_set_stack(vcpu, stack);
1549 break;
1550 }
1551
1552 default:
1553 r = -EINVAL;
1554 }
1555
1556out:
1557 kfree(stack);
1558 return r;
b024b793
XZ		 1559}
1560
5b1c1493
CO		 1561int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
1562{
1563 return VM_FAULT_SIGBUS;
1564}
1565
db3fe4eb
TY		 1566void kvm_arch_free_memslot(struct kvm_memory_slot *free,
1567 struct kvm_memory_slot *dont)
1568{
1569}
1570
1571int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages)
1572{
1573 return 0;
1574}
1575
f7784b8e
MT		 1576int kvm_arch_prepare_memory_region(struct kvm *kvm,
1577 struct kvm_memory_slot *memslot,
b024b793 1578 struct kvm_memory_slot old,
f7784b8e 1579 struct kvm_userspace_memory_region *mem,
b024b793
XZ		 1580 int user_alloc)
1581{
1582 unsigned long i;
1cbea809 1583 unsigned long pfn;
f7784b8e 1584 int npages = memslot->npages;
b024b793
XZ		 1585 unsigned long base_gfn = memslot->base_gfn;
1586
a917f7af
XZ		 1587 if (base_gfn + npages > (KVM_MAX_MEM_SIZE >> PAGE_SHIFT))
1588 return -ENOMEM;
1589
b024b793 1590 for (i = 0; i < npages; i++) {
1cbea809
XZ		 1591 pfn = gfn_to_pfn(kvm, base_gfn + i);
1592 if (!kvm_is_mmio_pfn(pfn)) {
1593 kvm_set_pmt_entry(kvm, base_gfn + i,
1594 pfn << PAGE_SHIFT,
b010eb51 1595 _PAGE_AR_RWX | _PAGE_MA_WB);
1cbea809
XZ		 1596 memslot->rmap[i] = (unsigned long)pfn_to_page(pfn);
1597 } else {
1598 kvm_set_pmt_entry(kvm, base_gfn + i,
b010eb51 1599 GPFN_PHYS_MMIO | (pfn << PAGE_SHIFT),
1cbea809
XZ		 1600 _PAGE_MA_UC);
1601 memslot->rmap[i] = 0;
1602 }
b024b793
XZ		 1603 }
1604
1605 return 0;
1606}
1607
f7784b8e
MT		 1608void kvm_arch_commit_memory_region(struct kvm *kvm,
1609 struct kvm_userspace_memory_region *mem,
1610 struct kvm_memory_slot old,
1611 int user_alloc)
1612{
1613 return;
1614}
1615
34d4cb8f
MT		 1616void kvm_arch_flush_shadow(struct kvm *kvm)
1617{
64f6afbd 1618 kvm_flush_remote_tlbs(kvm);
34d4cb8f 1619}
b024b793
XZ		 1620
1621long kvm_arch_dev_ioctl(struct file *filp,
e9a999fe 1622 unsigned int ioctl, unsigned long arg)
b024b793
XZ		 1623{
1624 return -EINVAL;
1625}
1626
1627void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
1628{
1629 kvm_vcpu_uninit(vcpu);
1630}
1631
1632static int vti_cpu_has_kvm_support(void)
1633{
1634 long avail = 1, status = 1, control = 1;
1635 long ret;
1636
1637 ret = ia64_pal_proc_get_features(&avail, &status, &control, 0);
1638 if (ret)
1639 goto out;
1640
1641 if (!(avail & PAL_PROC_VM_BIT))
1642 goto out;
1643
1644 printk(KERN_DEBUG"kvm: Hardware Supports VT\n");
1645
1646 ret = ia64_pal_vp_env_info(&kvm_vm_buffer_size, &vp_env_info);
1647 if (ret)
1648 goto out;
1649 printk(KERN_DEBUG"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size);
1650
1651 if (!(vp_env_info & VP_OPCODE)) {
1652 printk(KERN_WARNING"kvm: No opcode ability on hardware, "
1653 "vm_env_info:0x%lx\n", vp_env_info);
1654 }
1655
1656 return 1;
1657out:
1658 return 0;
1659}
1660
0b5d7a2c
JS		 1661
1662/*
1663 * On SN2, the ITC isn't stable, so copy in fast path code to use the
1664 * SN2 RTC, replacing the ITC based default verion.
1665 */
1666static void kvm_patch_vmm(struct kvm_vmm_info *vmm_info,
1667 struct module *module)
1668{
1669 unsigned long new_ar, new_ar_sn2;
1670 unsigned long module_base;
1671
1672 if (!ia64_platform_is("sn2"))
1673 return;
1674
1675 module_base = (unsigned long)module->module_core;
1676
1677 new_ar = kvm_vmm_base + vmm_info->patch_mov_ar - module_base;
1678 new_ar_sn2 = kvm_vmm_base + vmm_info->patch_mov_ar_sn2 - module_base;
1679
1680 printk(KERN_INFO "kvm: Patching ITC emulation to use SGI SN2 RTC "
1681 "as source\n");
1682
1683 /*
1684 * Copy the SN2 version of mov_ar into place. They are both
1685 * the same size, so 6 bundles is sufficient (6 * 0x10).
1686 */
1687 memcpy((void *)new_ar, (void *)new_ar_sn2, 0x60);
1688}
1689
b024b793 1690static int kvm_relocate_vmm(struct kvm_vmm_info *vmm_info,
0b5d7a2c 1691 struct module *module)
b024b793
XZ		 1692{
1693 unsigned long module_base;
1694 unsigned long vmm_size;
1695
1696 unsigned long vmm_offset, func_offset, fdesc_offset;
1697 struct fdesc *p_fdesc;
1698
1699 BUG_ON(!module);
1700
1701 if (!kvm_vmm_base) {
421f91d2 1702 printk("kvm: kvm area hasn't been initialized yet!!\n");
b024b793
XZ		 1703 return -EFAULT;
1704 }
1705
1706 /*Calculate new position of relocated vmm module.*/
1707 module_base = (unsigned long)module->module_core;
1708 vmm_size = module->core_size;
1709 if (unlikely(vmm_size > KVM_VMM_SIZE))
1710 return -EFAULT;
1711
1712 memcpy((void *)kvm_vmm_base, (void *)module_base, vmm_size);
0b5d7a2c 1713 kvm_patch_vmm(vmm_info, module);
b024b793
XZ		 1714 kvm_flush_icache(kvm_vmm_base, vmm_size);
1715
1716 /*Recalculate kvm_vmm_info based on new VMM*/
1717 vmm_offset = vmm_info->vmm_ivt - module_base;
1718 kvm_vmm_info->vmm_ivt = KVM_VMM_BASE + vmm_offset;
1719 printk(KERN_DEBUG"kvm: Relocated VMM's IVT Base Addr:%lx\n",
1720 kvm_vmm_info->vmm_ivt);
1721
1722 fdesc_offset = (unsigned long)vmm_info->vmm_entry - module_base;
1723 kvm_vmm_info->vmm_entry = (kvm_vmm_entry *)(KVM_VMM_BASE +
1724 fdesc_offset);
1725 func_offset = *(unsigned long *)vmm_info->vmm_entry - module_base;
1726 p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset);
1727 p_fdesc->ip = KVM_VMM_BASE + func_offset;
1728 p_fdesc->gp = KVM_VMM_BASE+(p_fdesc->gp - module_base);
1729
1730 printk(KERN_DEBUG"kvm: Relocated VMM's Init Entry Addr:%lx\n",
1731 KVM_VMM_BASE+func_offset);
1732
1733 fdesc_offset = (unsigned long)vmm_info->tramp_entry - module_base;
1734 kvm_vmm_info->tramp_entry = (kvm_tramp_entry *)(KVM_VMM_BASE +
1735 fdesc_offset);
1736 func_offset = *(unsigned long *)vmm_info->tramp_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 kvm_vmm_gp = p_fdesc->gp;
1742
1743 printk(KERN_DEBUG"kvm: Relocated VMM's Entry IP:%p\n",
1744 kvm_vmm_info->vmm_entry);
1745 printk(KERN_DEBUG"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n",
1746 KVM_VMM_BASE + func_offset);
1747
1748 return 0;
1749}
1750
1751int kvm_arch_init(void *opaque)
1752{
1753 int r;
1754 struct kvm_vmm_info *vmm_info = (struct kvm_vmm_info *)opaque;
1755
1756 if (!vti_cpu_has_kvm_support()) {
1757 printk(KERN_ERR "kvm: No Hardware Virtualization Support!\n");
1758 r = -EOPNOTSUPP;
1759 goto out;
1760 }
1761
1762 if (kvm_vmm_info) {
1763 printk(KERN_ERR "kvm: Already loaded VMM module!\n");
1764 r = -EEXIST;
1765 goto out;
1766 }
1767
1768 r = -ENOMEM;
1769 kvm_vmm_info = kzalloc(sizeof(struct kvm_vmm_info), GFP_KERNEL);
1770 if (!kvm_vmm_info)
1771 goto out;
1772
1773 if (kvm_alloc_vmm_area())
1774 goto out_free0;
1775
1776 r = kvm_relocate_vmm(vmm_info, vmm_info->module);
1777 if (r)
1778 goto out_free1;
1779
1780 return 0;
1781
1782out_free1:
1783 kvm_free_vmm_area();
1784out_free0:
1785 kfree(kvm_vmm_info);
1786out:
1787 return r;
1788}
1789
1790void kvm_arch_exit(void)
1791{
1792 kvm_free_vmm_area();
1793 kfree(kvm_vmm_info);
1794 kvm_vmm_info = NULL;
1795}
1796
979586e0
TY		 1797static void kvm_ia64_sync_dirty_log(struct kvm *kvm,
1798 struct kvm_memory_slot *memslot)
b024b793 1799{
979586e0 1800 int i;
87bf6e7d
TY		 1801 long base;
1802 unsigned long n;
a917f7af
XZ		 1803 unsigned long *dirty_bitmap = (unsigned long *)(kvm->arch.vm_base +
1804 offsetof(struct kvm_vm_data, kvm_mem_dirty_log));
b024b793 1805
87bf6e7d 1806 n = kvm_dirty_bitmap_bytes(memslot);
b024b793
XZ		 1807 base = memslot->base_gfn / BITS_PER_LONG;
1808
4482b06c 1809 spin_lock(&kvm->arch.dirty_log_lock);
b024b793
XZ		 1810 for (i = 0; i < n/sizeof(long); ++i) {
1811 memslot->dirty_bitmap[i] = dirty_bitmap[base + i];
1812 dirty_bitmap[base + i] = 0;
1813 }
4482b06c 1814 spin_unlock(&kvm->arch.dirty_log_lock);
b024b793
XZ		 1815}
1816
1817int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
1818 struct kvm_dirty_log *log)
1819{
1820 int r;
87bf6e7d 1821 unsigned long n;
b024b793
XZ		 1822 struct kvm_memory_slot *memslot;
1823 int is_dirty = 0;
1824
79fac95e 1825 mutex_lock(&kvm->slots_lock);
b024b793 1826
979586e0
TY		 1827 r = -EINVAL;
1828 if (log->slot >= KVM_MEMORY_SLOTS)
1829 goto out;
1830
28a37544 1831 memslot = id_to_memslot(kvm->memslots, log->slot);
979586e0
TY		 1832 r = -ENOENT;
1833 if (!memslot->dirty_bitmap)
b024b793
XZ		 1834 goto out;
1835
979586e0 1836 kvm_ia64_sync_dirty_log(kvm, memslot);
b024b793
XZ		 1837 r = kvm_get_dirty_log(kvm, log, &is_dirty);
1838 if (r)
1839 goto out;
1840
1841 /* If nothing is dirty, don't bother messing with page tables. */
1842 if (is_dirty) {
1843 kvm_flush_remote_tlbs(kvm);
87bf6e7d 1844 n = kvm_dirty_bitmap_bytes(memslot);
b024b793
XZ		 1845 memset(memslot->dirty_bitmap, 0, n);
1846 }
1847 r = 0;
1848out:
79fac95e 1849 mutex_unlock(&kvm->slots_lock);
b024b793
XZ		 1850 return r;
1851}
1852
1853int kvm_arch_hardware_setup(void)
1854{
1855 return 0;
1856}
1857
1858void kvm_arch_hardware_unsetup(void)
1859{
1860}
1861
58c2dde1 1862int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq)
b024b793 1863{
58c2dde1 1864 return __apic_accept_irq(vcpu, irq->vector);
b024b793
XZ		 1865}
1866
1867int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest)
1868{
1869 return apic->vcpu->vcpu_id == dest;
1870}
1871
1872int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda)
1873{
1874 return 0;
1875}
1876
e1035715 1877int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2)
b024b793 1878{
e1035715 1879 return vcpu1->arch.xtp - vcpu2->arch.xtp;
b024b793
XZ		 1880}
1881
343f94fe
GN		 1882int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
1883 int short_hand, int dest, int dest_mode)
1884{
58c2dde1 1885 struct kvm_lapic *target = vcpu->arch.apic;
343f94fe
GN		 1886 return (dest_mode == 0) ?
1887 kvm_apic_match_physical_addr(target, dest) :
1888 kvm_apic_match_logical_addr(target, dest);
1889}
1890
b024b793
XZ		 1891static int find_highest_bits(int *dat)
1892{
1893 u32 bits, bitnum;
1894 int i;
1895
1896 /* loop for all 256 bits */
1897 for (i = 7; i >= 0 ; i--) {
1898 bits = dat[i];
1899 if (bits) {
1900 bitnum = fls(bits);
1901 return i * 32 + bitnum - 1;
1902 }
1903 }
1904
1905 return -1;
1906}
1907
1908int kvm_highest_pending_irq(struct kvm_vcpu *vcpu)
1909{
1910 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1911
1912 if (vpd->irr[0] & (1UL << NMI_VECTOR))
1913 return NMI_VECTOR;
1914 if (vpd->irr[0] & (1UL << ExtINT_VECTOR))
1915 return ExtINT_VECTOR;
1916
1917 return find_highest_bits((int *)&vpd->irr[0]);
1918}
1919
3d80840d
MT		 1920int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
1921{
decc9016 1922 return vcpu->arch.timer_fired;
3d80840d
MT		 1923}
1924
b024b793
XZ		 1925int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
1926{
a1b37100
GN		 1927 return (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE) ||
1928 (kvm_highest_pending_irq(vcpu) != -1);
b024b793 1929}
62d9f0db 1930
b6d33834
CD		 1931int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
1932{
1933 return (!test_and_set_bit(KVM_REQ_KICK, &vcpu->requests));
1934}
1935
62d9f0db
MT		 1936int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
1937 struct kvm_mp_state *mp_state)
1938{
8c4b537d 1939 mp_state->mp_state = vcpu->arch.mp_state;
8c4b537d
XZ		 1940 return 0;
1941}
1942
1943static int vcpu_reset(struct kvm_vcpu *vcpu)
1944{
1945 int r;
1946 long psr;
1947 local_irq_save(psr);
1948 r = kvm_insert_vmm_mapping(vcpu);
43890ae8 1949 local_irq_restore(psr);
8c4b537d
XZ		 1950 if (r)
1951 goto fail;
1952
1953 vcpu->arch.launched = 0;
1954 kvm_arch_vcpu_uninit(vcpu);
1955 r = kvm_arch_vcpu_init(vcpu);
1956 if (r)
1957 goto fail;
1958
1959 kvm_purge_vmm_mapping(vcpu);
1960 r = 0;
1961fail:
8c4b537d 1962 return r;
62d9f0db
MT		 1963}
1964
1965int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
1966 struct kvm_mp_state *mp_state)
1967{
8c4b537d
XZ		 1968 int r = 0;
1969
8c4b537d
XZ		 1970 vcpu->arch.mp_state = mp_state->mp_state;
1971 if (vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)
1972 r = vcpu_reset(vcpu);
8c4b537d 1973 return r;
62d9f0db 1974}
Linux kernel - Deliverables
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