]> git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blame - arch/ia64/kvm/kvm-ia64.c
projects / mirror_ubuntu-zesty-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
KVM: Drop kvm->irq_lock lock from irq injection path
[mirror_ubuntu-zesty-kernel.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
b024b793
XZ		 213static int handle_vm_error(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
214{
215 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
216 kvm_run->hw.hardware_exit_reason = 1;
217 return 0;
218}
219
220static int handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
221{
222 struct kvm_mmio_req *p;
223 struct kvm_io_device *mmio_dev;
bda9020e 224 int r;
b024b793
XZ		 225
226 p = kvm_get_vcpu_ioreq(vcpu);
227
228 if ((p->addr & PAGE_MASK) == IOAPIC_DEFAULT_BASE_ADDRESS)
229 goto mmio;
230 vcpu->mmio_needed = 1;
231 vcpu->mmio_phys_addr = kvm_run->mmio.phys_addr = p->addr;
232 vcpu->mmio_size = kvm_run->mmio.len = p->size;
233 vcpu->mmio_is_write = kvm_run->mmio.is_write = !p->dir;
234
235 if (vcpu->mmio_is_write)
236 memcpy(vcpu->mmio_data, &p->data, p->size);
237 memcpy(kvm_run->mmio.data, &p->data, p->size);
238 kvm_run->exit_reason = KVM_EXIT_MMIO;
239 return 0;
240mmio:
bda9020e
MT		 241 if (p->dir)
242 r = kvm_io_bus_read(&vcpu->kvm->mmio_bus, p->addr,
243 p->size, &p->data);
244 else
245 r = kvm_io_bus_write(&vcpu->kvm->mmio_bus, p->addr,
246 p->size, &p->data);
247 if (r)
b024b793
XZ		 248 printk(KERN_ERR"kvm: No iodevice found! addr:%lx\n", p->addr);
249 p->state = STATE_IORESP_READY;
250
251 return 1;
252}
253
254static int handle_pal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
255{
256 struct exit_ctl_data *p;
257
258 p = kvm_get_exit_data(vcpu);
259
260 if (p->exit_reason == EXIT_REASON_PAL_CALL)
261 return kvm_pal_emul(vcpu, kvm_run);
262 else {
263 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
264 kvm_run->hw.hardware_exit_reason = 2;
265 return 0;
266 }
267}
268
269static int handle_sal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
270{
271 struct exit_ctl_data *p;
272
273 p = kvm_get_exit_data(vcpu);
274
275 if (p->exit_reason == EXIT_REASON_SAL_CALL) {
276 kvm_sal_emul(vcpu);
277 return 1;
278 } else {
279 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
280 kvm_run->hw.hardware_exit_reason = 3;
281 return 0;
282 }
283
284}
285
58c2dde1
GN		 286static int __apic_accept_irq(struct kvm_vcpu *vcpu, uint64_t vector)
287{
288 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
289
290 if (!test_and_set_bit(vector, &vpd->irr[0])) {
291 vcpu->arch.irq_new_pending = 1;
292 kvm_vcpu_kick(vcpu);
293 return 1;
294 }
295 return 0;
296}
297
b024b793
XZ		 298/*
299 * offset: address offset to IPI space.
300 * value: deliver value.
301 */
302static void vcpu_deliver_ipi(struct kvm_vcpu *vcpu, uint64_t dm,
303 uint64_t vector)
304{
305 switch (dm) {
306 case SAPIC_FIXED:
b024b793
XZ		 307 break;
308 case SAPIC_NMI:
58c2dde1 309 vector = 2;
b024b793
XZ		 310 break;
311 case SAPIC_EXTINT:
58c2dde1 312 vector = 0;
b024b793
XZ		 313 break;
314 case SAPIC_INIT:
315 case SAPIC_PMI:
316 default:
317 printk(KERN_ERR"kvm: Unimplemented Deliver reserved IPI!\n");
58c2dde1 318 return;
b024b793 319 }
58c2dde1 320 __apic_accept_irq(vcpu, vector);
b024b793
XZ		 321}
322
323static struct kvm_vcpu *lid_to_vcpu(struct kvm *kvm, unsigned long id,
324 unsigned long eid)
325{
326 union ia64_lid lid;
327 int i;
988a2cae 328 struct kvm_vcpu *vcpu;
b024b793 329
988a2cae
GN		 330 kvm_for_each_vcpu(i, vcpu, kvm) {
331 lid.val = VCPU_LID(vcpu);
332 if (lid.id == id && lid.eid == eid)
333 return vcpu;
b024b793
XZ		 334 }
335
336 return NULL;
337}
338
339static int handle_ipi(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
340{
341 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
342 struct kvm_vcpu *target_vcpu;
343 struct kvm_pt_regs *regs;
344 union ia64_ipi_a addr = p->u.ipi_data.addr;
345 union ia64_ipi_d data = p->u.ipi_data.data;
346
347 target_vcpu = lid_to_vcpu(vcpu->kvm, addr.id, addr.eid);
348 if (!target_vcpu)
349 return handle_vm_error(vcpu, kvm_run);
350
351 if (!target_vcpu->arch.launched) {
352 regs = vcpu_regs(target_vcpu);
353
354 regs->cr_iip = vcpu->kvm->arch.rdv_sal_data.boot_ip;
355 regs->r1 = vcpu->kvm->arch.rdv_sal_data.boot_gp;
356
a4535290 357 target_vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
b024b793
XZ		 358 if (waitqueue_active(&target_vcpu->wq))
359 wake_up_interruptible(&target_vcpu->wq);
360 } else {
361 vcpu_deliver_ipi(target_vcpu, data.dm, data.vector);
362 if (target_vcpu != vcpu)
363 kvm_vcpu_kick(target_vcpu);
364 }
365
366 return 1;
367}
368
369struct call_data {
370 struct kvm_ptc_g ptc_g_data;
371 struct kvm_vcpu *vcpu;
372};
373
374static void vcpu_global_purge(void *info)
375{
376 struct call_data *p = (struct call_data *)info;
377 struct kvm_vcpu *vcpu = p->vcpu;
378
379 if (test_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests))
380 return;
381
382 set_bit(KVM_REQ_PTC_G, &vcpu->requests);
383 if (vcpu->arch.ptc_g_count < MAX_PTC_G_NUM) {
384 vcpu->arch.ptc_g_data[vcpu->arch.ptc_g_count++] =
385 p->ptc_g_data;
386 } else {
387 clear_bit(KVM_REQ_PTC_G, &vcpu->requests);
388 vcpu->arch.ptc_g_count = 0;
389 set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests);
390 }
391}
392
393static int handle_global_purge(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
394{
395 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
396 struct kvm *kvm = vcpu->kvm;
397 struct call_data call_data;
398 int i;
988a2cae 399 struct kvm_vcpu *vcpui;
decc9016 400
b024b793
XZ		 401 call_data.ptc_g_data = p->u.ptc_g_data;
402
988a2cae
GN		 403 kvm_for_each_vcpu(i, vcpui, kvm) {
404 if (vcpui->arch.mp_state == KVM_MP_STATE_UNINITIALIZED ||
405 vcpu == vcpui)
b024b793
XZ		 406 continue;
407
988a2cae
GN		 408 if (waitqueue_active(&vcpui->wq))
409 wake_up_interruptible(&vcpui->wq);
b024b793 410
988a2cae
GN		 411 if (vcpui->cpu != -1) {
412 call_data.vcpu = vcpui;
413 smp_call_function_single(vcpui->cpu,
2f73ccab 414 vcpu_global_purge, &call_data, 1);
b024b793
XZ		 415 } else
416 printk(KERN_WARNING"kvm: Uninit vcpu received ipi!\n");
417
418 }
419 return 1;
420}
421
422static int handle_switch_rr6(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
423{
424 return 1;
425}
426
0c72ea7f
JS		 427static int kvm_sn2_setup_mappings(struct kvm_vcpu *vcpu)
428{
429 unsigned long pte, rtc_phys_addr, map_addr;
430 int slot;
431
432 map_addr = KVM_VMM_BASE + (1UL << KVM_VMM_SHIFT);
433 rtc_phys_addr = LOCAL_MMR_OFFSET | SH_RTC;
434 pte = pte_val(mk_pte_phys(rtc_phys_addr, PAGE_KERNEL_UC));
435 slot = ia64_itr_entry(0x3, map_addr, pte, PAGE_SHIFT);
436 vcpu->arch.sn_rtc_tr_slot = slot;
437 if (slot < 0) {
438 printk(KERN_ERR "Mayday mayday! RTC mapping failed!\n");
439 slot = 0;
440 }
441 return slot;
442}
443
b024b793
XZ		 444int kvm_emulate_halt(struct kvm_vcpu *vcpu)
445{
446
447 ktime_t kt;
448 long itc_diff;
449 unsigned long vcpu_now_itc;
b024b793
XZ		 450 unsigned long expires;
451 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
452 unsigned long cyc_per_usec = local_cpu_data->cyc_per_usec;
453 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
454
decc9016 455 if (irqchip_in_kernel(vcpu->kvm)) {
b024b793 456
c6c9fcdf 457 vcpu_now_itc = kvm_get_itc(vcpu) + vcpu->arch.itc_offset;
b024b793 458
decc9016
XZ		 459 if (time_after(vcpu_now_itc, vpd->itm)) {
460 vcpu->arch.timer_check = 1;
461 return 1;
462 }
463 itc_diff = vpd->itm - vcpu_now_itc;
464 if (itc_diff < 0)
465 itc_diff = -itc_diff;
466
467 expires = div64_u64(itc_diff, cyc_per_usec);
468 kt = ktime_set(0, 1000 * expires);
469
decc9016
XZ		 470 vcpu->arch.ht_active = 1;
471 hrtimer_start(p_ht, kt, HRTIMER_MODE_ABS);
b024b793 472
a4535290 473 vcpu->arch.mp_state = KVM_MP_STATE_HALTED;
b024b793
XZ		 474 kvm_vcpu_block(vcpu);
475 hrtimer_cancel(p_ht);
476 vcpu->arch.ht_active = 0;
477
09cec754
GN		 478 if (test_and_clear_bit(KVM_REQ_UNHALT, &vcpu->requests) ||
479 kvm_cpu_has_pending_timer(vcpu))
decc9016 480 if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED)
09cec754 481 vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
decc9016 482
a4535290 483 if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE)
b024b793
XZ		 484 return -EINTR;
485 return 1;
486 } else {
487 printk(KERN_ERR"kvm: Unsupported userspace halt!");
488 return 0;
489 }
490}
491
492static int handle_vm_shutdown(struct kvm_vcpu *vcpu,
493 struct kvm_run *kvm_run)
494{
495 kvm_run->exit_reason = KVM_EXIT_SHUTDOWN;
496 return 0;
497}
498
499static int handle_external_interrupt(struct kvm_vcpu *vcpu,
500 struct kvm_run *kvm_run)
501{
502 return 1;
503}
504
7d637978
XZ		 505static int handle_vcpu_debug(struct kvm_vcpu *vcpu,
506 struct kvm_run *kvm_run)
507{
508 printk("VMM: %s", vcpu->arch.log_buf);
509 return 1;
510}
511
b024b793
XZ		 512static int (*kvm_vti_exit_handlers[])(struct kvm_vcpu *vcpu,
513 struct kvm_run *kvm_run) = {
514 [EXIT_REASON_VM_PANIC] = handle_vm_error,
515 [EXIT_REASON_MMIO_INSTRUCTION] = handle_mmio,
516 [EXIT_REASON_PAL_CALL] = handle_pal_call,
517 [EXIT_REASON_SAL_CALL] = handle_sal_call,
518 [EXIT_REASON_SWITCH_RR6] = handle_switch_rr6,
519 [EXIT_REASON_VM_DESTROY] = handle_vm_shutdown,
520 [EXIT_REASON_EXTERNAL_INTERRUPT] = handle_external_interrupt,
521 [EXIT_REASON_IPI] = handle_ipi,
522 [EXIT_REASON_PTC_G] = handle_global_purge,
7d637978 523 [EXIT_REASON_DEBUG] = handle_vcpu_debug,
b024b793
XZ		 524
525};
526
527static const int kvm_vti_max_exit_handlers =
528 sizeof(kvm_vti_exit_handlers)/sizeof(*kvm_vti_exit_handlers);
529
b024b793
XZ		 530static uint32_t kvm_get_exit_reason(struct kvm_vcpu *vcpu)
531{
532 struct exit_ctl_data *p_exit_data;
533
534 p_exit_data = kvm_get_exit_data(vcpu);
535 return p_exit_data->exit_reason;
536}
537
538/*
539 * The guest has exited. See if we can fix it or if we need userspace
540 * assistance.
541 */
542static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
543{
544 u32 exit_reason = kvm_get_exit_reason(vcpu);
545 vcpu->arch.last_exit = exit_reason;
546
547 if (exit_reason < kvm_vti_max_exit_handlers
548 && kvm_vti_exit_handlers[exit_reason])
549 return kvm_vti_exit_handlers[exit_reason](vcpu, kvm_run);
550 else {
551 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
552 kvm_run->hw.hardware_exit_reason = exit_reason;
553 }
554 return 0;
555}
556
557static inline void vti_set_rr6(unsigned long rr6)
558{
559 ia64_set_rr(RR6, rr6);
560 ia64_srlz_i();
561}
562
563static int kvm_insert_vmm_mapping(struct kvm_vcpu *vcpu)
564{
565 unsigned long pte;
566 struct kvm *kvm = vcpu->kvm;
567 int r;
568
569 /*Insert a pair of tr to map vmm*/
570 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL));
571 r = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
572 if (r < 0)
573 goto out;
574 vcpu->arch.vmm_tr_slot = r;
575 /*Insert a pairt of tr to map data of vm*/
576 pte = pte_val(mk_pte_phys(__pa(kvm->arch.vm_base), PAGE_KERNEL));
577 r = ia64_itr_entry(0x3, KVM_VM_DATA_BASE,
578 pte, KVM_VM_DATA_SHIFT);
579 if (r < 0)
580 goto out;
581 vcpu->arch.vm_tr_slot = r;
0c72ea7f
JS		 582
583#if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
584 if (kvm->arch.is_sn2) {
585 r = kvm_sn2_setup_mappings(vcpu);
586 if (r < 0)
587 goto out;
588 }
589#endif
590
b024b793
XZ		 591 r = 0;
592out:
593 return r;
b024b793
XZ		 594}
595
596static void kvm_purge_vmm_mapping(struct kvm_vcpu *vcpu)
597{
0c72ea7f 598 struct kvm *kvm = vcpu->kvm;
b024b793
XZ		 599 ia64_ptr_entry(0x3, vcpu->arch.vmm_tr_slot);
600 ia64_ptr_entry(0x3, vcpu->arch.vm_tr_slot);
0c72ea7f
JS		 601#if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
602 if (kvm->arch.is_sn2)
603 ia64_ptr_entry(0x3, vcpu->arch.sn_rtc_tr_slot);
604#endif
b024b793
XZ		 605}
606
607static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu)
608{
4d13c3b0
JS		 609 unsigned long psr;
610 int r;
b024b793
XZ		 611 int cpu = smp_processor_id();
612
613 if (vcpu->arch.last_run_cpu != cpu ||
614 per_cpu(last_vcpu, cpu) != vcpu) {
615 per_cpu(last_vcpu, cpu) = vcpu;
616 vcpu->arch.last_run_cpu = cpu;
617 kvm_flush_tlb_all();
618 }
619
620 vcpu->arch.host_rr6 = ia64_get_rr(RR6);
621 vti_set_rr6(vcpu->arch.vmm_rr);
4d13c3b0
JS		 622 local_irq_save(psr);
623 r = kvm_insert_vmm_mapping(vcpu);
624 local_irq_restore(psr);
625 return r;
b024b793 626}
c6b60c69 627
b024b793
XZ		 628static void kvm_vcpu_post_transition(struct kvm_vcpu *vcpu)
629{
630 kvm_purge_vmm_mapping(vcpu);
631 vti_set_rr6(vcpu->arch.host_rr6);
632}
633
c6b60c69 634static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
b024b793
XZ		 635{
636 union context *host_ctx, *guest_ctx;
637 int r;
638
c6b60c69
JS		 639 /*
640 * down_read() may sleep and return with interrupts enabled
641 */
642 down_read(&vcpu->kvm->slots_lock);
b024b793
XZ		 643
644again:
b024b793 645 if (signal_pending(current)) {
b024b793
XZ		 646 r = -EINTR;
647 kvm_run->exit_reason = KVM_EXIT_INTR;
648 goto out;
649 }
650
d24d2c1c
JS		 651 preempt_disable();
652 local_irq_disable();
653
c6b60c69
JS		 654 /*Get host and guest context with guest address space.*/
655 host_ctx = kvm_get_host_context(vcpu);
656 guest_ctx = kvm_get_guest_context(vcpu);
657
32f88400 658 clear_bit(KVM_REQ_KICK, &vcpu->requests);
c6b60c69
JS		 659
660 r = kvm_vcpu_pre_transition(vcpu);
661 if (r < 0)
662 goto vcpu_run_fail;
663
664 up_read(&vcpu->kvm->slots_lock);
b024b793 665 kvm_guest_enter();
c6b60c69
JS		 666
667 /*
668 * Transition to the guest
669 */
670 kvm_vmm_info->tramp_entry(host_ctx, guest_ctx);
671
672 kvm_vcpu_post_transition(vcpu);
b024b793
XZ		 673
674 vcpu->arch.launched = 1;
32f88400 675 set_bit(KVM_REQ_KICK, &vcpu->requests);
b024b793
XZ		 676 local_irq_enable();
677
678 /*
679 * We must have an instruction between local_irq_enable() and
680 * kvm_guest_exit(), so the timer interrupt isn't delayed by
681 * the interrupt shadow. The stat.exits increment will do nicely.
682 * But we need to prevent reordering, hence this barrier():
683 */
684 barrier();
b024b793 685 kvm_guest_exit();
b024b793
XZ		 686 preempt_enable();
687
c6b60c69
JS		 688 down_read(&vcpu->kvm->slots_lock);
689
b024b793
XZ		 690 r = kvm_handle_exit(kvm_run, vcpu);
691
692 if (r > 0) {
693 if (!need_resched())
694 goto again;
695 }
696
697out:
c6b60c69 698 up_read(&vcpu->kvm->slots_lock);
b024b793
XZ		 699 if (r > 0) {
700 kvm_resched(vcpu);
c6b60c69 701 down_read(&vcpu->kvm->slots_lock);
b024b793
XZ		 702 goto again;
703 }
704
705 return r;
c6b60c69
JS		 706
707vcpu_run_fail:
708 local_irq_enable();
709 preempt_enable();
710 kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
711 goto out;
b024b793
XZ		 712}
713
714static void kvm_set_mmio_data(struct kvm_vcpu *vcpu)
715{
716 struct kvm_mmio_req *p = kvm_get_vcpu_ioreq(vcpu);
717
718 if (!vcpu->mmio_is_write)
719 memcpy(&p->data, vcpu->mmio_data, 8);
720 p->state = STATE_IORESP_READY;
721}
722
723int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
724{
725 int r;
726 sigset_t sigsaved;
727
728 vcpu_load(vcpu);
729
a2e4e289
XZ		 730 if (vcpu->sigset_active)
731 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
732
a4535290 733 if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) {
b024b793 734 kvm_vcpu_block(vcpu);
decc9016 735 clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
a2e4e289
XZ		 736 r = -EAGAIN;
737 goto out;
b024b793
XZ		 738 }
739
b024b793
XZ		 740 if (vcpu->mmio_needed) {
741 memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8);
742 kvm_set_mmio_data(vcpu);
743 vcpu->mmio_read_completed = 1;
744 vcpu->mmio_needed = 0;
745 }
746 r = __vcpu_run(vcpu, kvm_run);
a2e4e289 747out:
b024b793
XZ		 748 if (vcpu->sigset_active)
749 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
750
751 vcpu_put(vcpu);
752 return r;
753}
754
b024b793
XZ		 755static struct kvm *kvm_alloc_kvm(void)
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)
766 return ERR_PTR(-ENOMEM);
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
777struct kvm_io_range {
778 unsigned long start;
779 unsigned long size;
780 unsigned long type;
781};
782
783static const struct kvm_io_range io_ranges[] = {
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
812static void kvm_init_vm(struct kvm *kvm)
813{
b024b793
XZ		 814 BUG_ON(!kvm);
815
816 kvm->arch.metaphysical_rr0 = GUEST_PHYSICAL_RR0;
817 kvm->arch.metaphysical_rr4 = GUEST_PHYSICAL_RR4;
818 kvm->arch.vmm_init_rr = VMM_INIT_RR;
819
b024b793
XZ		 820 /*
821 *Fill P2M entries for MMIO/IO ranges
822 */
823 kvm_build_io_pmt(kvm);
824
2381ad24 825 INIT_LIST_HEAD(&kvm->arch.assigned_dev_head);
5550af4d
SY		 826
827 /* Reserve bit 0 of irq_sources_bitmap for userspace irq source */
828 set_bit(KVM_USERSPACE_IRQ_SOURCE_ID, &kvm->arch.irq_sources_bitmap);
b024b793
XZ		 829}
830
831struct kvm *kvm_arch_create_vm(void)
832{
833 struct kvm *kvm = kvm_alloc_kvm();
834
835 if (IS_ERR(kvm))
836 return ERR_PTR(-ENOMEM);
0c72ea7f
JS		 837
838 kvm->arch.is_sn2 = ia64_platform_is("sn2");
839
b024b793
XZ		 840 kvm_init_vm(kvm);
841
842 return kvm;
843
844}
845
846static int kvm_vm_ioctl_get_irqchip(struct kvm *kvm,
847 struct kvm_irqchip *chip)
848{
849 int r;
850
851 r = 0;
852 switch (chip->chip_id) {
853 case KVM_IRQCHIP_IOAPIC:
eba0226b 854 r = kvm_get_ioapic(kvm, &chip->chip.ioapic);
b024b793
XZ		 855 break;
856 default:
857 r = -EINVAL;
858 break;
859 }
860 return r;
861}
862
863static int kvm_vm_ioctl_set_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
864{
865 int r;
866
867 r = 0;
868 switch (chip->chip_id) {
869 case KVM_IRQCHIP_IOAPIC:
eba0226b 870 r = kvm_set_ioapic(kvm, &chip->chip.ioapic);
b024b793
XZ		 871 break;
872 default:
873 r = -EINVAL;
874 break;
875 }
876 return r;
877}
878
879#define RESTORE_REGS(_x) vcpu->arch._x = regs->_x
880
881int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
882{
b024b793 883 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
042b26ed 884 int i;
b024b793
XZ		 885
886 vcpu_load(vcpu);
887
888 for (i = 0; i < 16; i++) {
889 vpd->vgr[i] = regs->vpd.vgr[i];
890 vpd->vbgr[i] = regs->vpd.vbgr[i];
891 }
892 for (i = 0; i < 128; i++)
893 vpd->vcr[i] = regs->vpd.vcr[i];
894 vpd->vhpi = regs->vpd.vhpi;
895 vpd->vnat = regs->vpd.vnat;
896 vpd->vbnat = regs->vpd.vbnat;
897 vpd->vpsr = regs->vpd.vpsr;
898
899 vpd->vpr = regs->vpd.vpr;
900
042b26ed 901 memcpy(&vcpu->arch.guest, &regs->saved_guest, sizeof(union context));
b024b793
XZ		 902
903 RESTORE_REGS(mp_state);
904 RESTORE_REGS(vmm_rr);
905 memcpy(vcpu->arch.itrs, regs->itrs, sizeof(struct thash_data) * NITRS);
906 memcpy(vcpu->arch.dtrs, regs->dtrs, sizeof(struct thash_data) * NDTRS);
907 RESTORE_REGS(itr_regions);
908 RESTORE_REGS(dtr_regions);
909 RESTORE_REGS(tc_regions);
910 RESTORE_REGS(irq_check);
911 RESTORE_REGS(itc_check);
912 RESTORE_REGS(timer_check);
913 RESTORE_REGS(timer_pending);
914 RESTORE_REGS(last_itc);
915 for (i = 0; i < 8; i++) {
916 vcpu->arch.vrr[i] = regs->vrr[i];
917 vcpu->arch.ibr[i] = regs->ibr[i];
918 vcpu->arch.dbr[i] = regs->dbr[i];
919 }
920 for (i = 0; i < 4; i++)
921 vcpu->arch.insvc[i] = regs->insvc[i];
922 RESTORE_REGS(xtp);
923 RESTORE_REGS(metaphysical_rr0);
924 RESTORE_REGS(metaphysical_rr4);
925 RESTORE_REGS(metaphysical_saved_rr0);
926 RESTORE_REGS(metaphysical_saved_rr4);
927 RESTORE_REGS(fp_psr);
928 RESTORE_REGS(saved_gp);
929
930 vcpu->arch.irq_new_pending = 1;
c6c9fcdf 931 vcpu->arch.itc_offset = regs->saved_itc - kvm_get_itc(vcpu);
b024b793
XZ		 932 set_bit(KVM_REQ_RESUME, &vcpu->requests);
933
934 vcpu_put(vcpu);
042b26ed
JS		 935
936 return 0;
b024b793
XZ		 937}
938
939long kvm_arch_vm_ioctl(struct file *filp,
940 unsigned int ioctl, unsigned long arg)
941{
942 struct kvm *kvm = filp->private_data;
943 void __user *argp = (void __user *)arg;
944 int r = -EINVAL;
945
946 switch (ioctl) {
947 case KVM_SET_MEMORY_REGION: {
948 struct kvm_memory_region kvm_mem;
949 struct kvm_userspace_memory_region kvm_userspace_mem;
950
951 r = -EFAULT;
952 if (copy_from_user(&kvm_mem, argp, sizeof kvm_mem))
953 goto out;
954 kvm_userspace_mem.slot = kvm_mem.slot;
955 kvm_userspace_mem.flags = kvm_mem.flags;
956 kvm_userspace_mem.guest_phys_addr =
957 kvm_mem.guest_phys_addr;
958 kvm_userspace_mem.memory_size = kvm_mem.memory_size;
959 r = kvm_vm_ioctl_set_memory_region(kvm,
960 &kvm_userspace_mem, 0);
961 if (r)
962 goto out;
963 break;
964 }
965 case KVM_CREATE_IRQCHIP:
966 r = -EFAULT;
967 r = kvm_ioapic_init(kvm);
968 if (r)
969 goto out;
399ec807
AK		 970 r = kvm_setup_default_irq_routing(kvm);
971 if (r) {
972 kfree(kvm->arch.vioapic);
973 goto out;
974 }
b024b793 975 break;
4925663a 976 case KVM_IRQ_LINE_STATUS:
b024b793
XZ		 977 case KVM_IRQ_LINE: {
978 struct kvm_irq_level irq_event;
979
980 r = -EFAULT;
981 if (copy_from_user(&irq_event, argp, sizeof irq_event))
982 goto out;
983 if (irqchip_in_kernel(kvm)) {
4925663a 984 __s32 status;
4925663a 985 status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
5550af4d 986 irq_event.irq, irq_event.level);
4925663a
GN		 987 if (ioctl == KVM_IRQ_LINE_STATUS) {
988 irq_event.status = status;
989 if (copy_to_user(argp, &irq_event,
990 sizeof irq_event))
991 goto out;
992 }
b024b793
XZ		 993 r = 0;
994 }
995 break;
996 }
997 case KVM_GET_IRQCHIP: {
998 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
999 struct kvm_irqchip chip;
1000
1001 r = -EFAULT;
1002 if (copy_from_user(&chip, argp, sizeof chip))
1003 goto out;
1004 r = -ENXIO;
1005 if (!irqchip_in_kernel(kvm))
1006 goto out;
1007 r = kvm_vm_ioctl_get_irqchip(kvm, &chip);
1008 if (r)
1009 goto out;
1010 r = -EFAULT;
1011 if (copy_to_user(argp, &chip, sizeof chip))
1012 goto out;
1013 r = 0;
1014 break;
1015 }
1016 case KVM_SET_IRQCHIP: {
1017 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
1018 struct kvm_irqchip chip;
1019
1020 r = -EFAULT;
1021 if (copy_from_user(&chip, argp, sizeof chip))
1022 goto out;
1023 r = -ENXIO;
1024 if (!irqchip_in_kernel(kvm))
1025 goto out;
1026 r = kvm_vm_ioctl_set_irqchip(kvm, &chip);
1027 if (r)
1028 goto out;
1029 r = 0;
1030 break;
1031 }
1032 default:
1033 ;
1034 }
1035out:
1036 return r;
1037}
1038
1039int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
1040 struct kvm_sregs *sregs)
1041{
1042 return -EINVAL;
1043}
1044
1045int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
1046 struct kvm_sregs *sregs)
1047{
1048 return -EINVAL;
1049
1050}
1051int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
1052 struct kvm_translation *tr)
1053{
1054
1055 return -EINVAL;
1056}
1057
1058static int kvm_alloc_vmm_area(void)
1059{
1060 if (!kvm_vmm_base && (kvm_vm_buffer_size < KVM_VM_BUFFER_SIZE)) {
1061 kvm_vmm_base = __get_free_pages(GFP_KERNEL,
1062 get_order(KVM_VMM_SIZE));
1063 if (!kvm_vmm_base)
1064 return -ENOMEM;
1065
1066 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1067 kvm_vm_buffer = kvm_vmm_base + VMM_SIZE;
1068
1069 printk(KERN_DEBUG"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n",
1070 kvm_vmm_base, kvm_vm_buffer);
1071 }
1072
1073 return 0;
1074}
1075
1076static void kvm_free_vmm_area(void)
1077{
1078 if (kvm_vmm_base) {
1079 /*Zero this area before free to avoid bits leak!!*/
1080 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1081 free_pages(kvm_vmm_base, get_order(KVM_VMM_SIZE));
1082 kvm_vmm_base = 0;
1083 kvm_vm_buffer = 0;
1084 kvm_vsa_base = 0;
1085 }
1086}
1087
b024b793
XZ		 1088static int vti_init_vpd(struct kvm_vcpu *vcpu)
1089{
1090 int i;
1091 union cpuid3_t cpuid3;
1092 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1093
1094 if (IS_ERR(vpd))
1095 return PTR_ERR(vpd);
1096
1097 /* CPUID init */
1098 for (i = 0; i < 5; i++)
1099 vpd->vcpuid[i] = ia64_get_cpuid(i);
1100
1101 /* Limit the CPUID number to 5 */
1102 cpuid3.value = vpd->vcpuid[3];
1103 cpuid3.number = 4; /* 5 - 1 */
1104 vpd->vcpuid[3] = cpuid3.value;
1105
1106 /*Set vac and vdc fields*/
1107 vpd->vac.a_from_int_cr = 1;
1108 vpd->vac.a_to_int_cr = 1;
1109 vpd->vac.a_from_psr = 1;
1110 vpd->vac.a_from_cpuid = 1;
1111 vpd->vac.a_cover = 1;
1112 vpd->vac.a_bsw = 1;
1113 vpd->vac.a_int = 1;
1114 vpd->vdc.d_vmsw = 1;
1115
1116 /*Set virtual buffer*/
1117 vpd->virt_env_vaddr = KVM_VM_BUFFER_BASE;
1118
1119 return 0;
1120}
1121
1122static int vti_create_vp(struct kvm_vcpu *vcpu)
1123{
1124 long ret;
1125 struct vpd *vpd = vcpu->arch.vpd;
1126 unsigned long vmm_ivt;
1127
1128 vmm_ivt = kvm_vmm_info->vmm_ivt;
1129
1130 printk(KERN_DEBUG "kvm: vcpu:%p,ivt: 0x%lx\n", vcpu, vmm_ivt);
1131
1132 ret = ia64_pal_vp_create((u64 *)vpd, (u64 *)vmm_ivt, 0);
1133
1134 if (ret) {
1135 printk(KERN_ERR"kvm: ia64_pal_vp_create failed!\n");
1136 return -EINVAL;
1137 }
1138 return 0;
1139}
1140
1141static void init_ptce_info(struct kvm_vcpu *vcpu)
1142{
1143 ia64_ptce_info_t ptce = {0};
1144
1145 ia64_get_ptce(&ptce);
1146 vcpu->arch.ptce_base = ptce.base;
1147 vcpu->arch.ptce_count[0] = ptce.count[0];
1148 vcpu->arch.ptce_count[1] = ptce.count[1];
1149 vcpu->arch.ptce_stride[0] = ptce.stride[0];
1150 vcpu->arch.ptce_stride[1] = ptce.stride[1];
1151}
1152
1153static void kvm_migrate_hlt_timer(struct kvm_vcpu *vcpu)
1154{
1155 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
1156
1157 if (hrtimer_cancel(p_ht))
18dd36af 1158 hrtimer_start_expires(p_ht, HRTIMER_MODE_ABS);
b024b793
XZ		 1159}
1160
1161static enum hrtimer_restart hlt_timer_fn(struct hrtimer *data)
1162{
1163 struct kvm_vcpu *vcpu;
1164 wait_queue_head_t *q;
1165
1166 vcpu = container_of(data, struct kvm_vcpu, arch.hlt_timer);
decc9016
XZ		 1167 q = &vcpu->wq;
1168
a4535290 1169 if (vcpu->arch.mp_state != KVM_MP_STATE_HALTED)
b024b793
XZ		 1170 goto out;
1171
decc9016 1172 if (waitqueue_active(q))
b024b793 1173 wake_up_interruptible(q);
decc9016 1174
b024b793 1175out:
decc9016 1176 vcpu->arch.timer_fired = 1;
b024b793
XZ		 1177 vcpu->arch.timer_check = 1;
1178 return HRTIMER_NORESTART;
1179}
1180
1181#define PALE_RESET_ENTRY 0x80000000ffffffb0UL
1182
1183int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
1184{
1185 struct kvm_vcpu *v;
1186 int r;
1187 int i;
1188 long itc_offset;
1189 struct kvm *kvm = vcpu->kvm;
1190 struct kvm_pt_regs *regs = vcpu_regs(vcpu);
1191
1192 union context *p_ctx = &vcpu->arch.guest;
1193 struct kvm_vcpu *vmm_vcpu = to_guest(vcpu->kvm, vcpu);
1194
1195 /*Init vcpu context for first run.*/
1196 if (IS_ERR(vmm_vcpu))
1197 return PTR_ERR(vmm_vcpu);
1198
c5af89b6 1199 if (kvm_vcpu_is_bsp(vcpu)) {
a4535290 1200 vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
b024b793
XZ		 1201
1202 /*Set entry address for first run.*/
1203 regs->cr_iip = PALE_RESET_ENTRY;
1204
a917f7af 1205 /*Initialize itc offset for vcpus*/
c6c9fcdf 1206 itc_offset = 0UL - kvm_get_itc(vcpu);
3032b925 1207 for (i = 0; i < KVM_MAX_VCPUS; i++) {
a917f7af
XZ		 1208 v = (struct kvm_vcpu *)((char *)vcpu +
1209 sizeof(struct kvm_vcpu_data) * i);
b024b793
XZ		 1210 v->arch.itc_offset = itc_offset;
1211 v->arch.last_itc = 0;
1212 }
1213 } else
a4535290 1214 vcpu->arch.mp_state = KVM_MP_STATE_UNINITIALIZED;
b024b793
XZ		 1215
1216 r = -ENOMEM;
1217 vcpu->arch.apic = kzalloc(sizeof(struct kvm_lapic), GFP_KERNEL);
1218 if (!vcpu->arch.apic)
1219 goto out;
1220 vcpu->arch.apic->vcpu = vcpu;
1221
1222 p_ctx->gr[1] = 0;
a917f7af 1223 p_ctx->gr[12] = (unsigned long)((char *)vmm_vcpu + KVM_STK_OFFSET);
b024b793
XZ		 1224 p_ctx->gr[13] = (unsigned long)vmm_vcpu;
1225 p_ctx->psr = 0x1008522000UL;
1226 p_ctx->ar[40] = FPSR_DEFAULT; /*fpsr*/
1227 p_ctx->caller_unat = 0;
1228 p_ctx->pr = 0x0;
1229 p_ctx->ar[36] = 0x0; /*unat*/
1230 p_ctx->ar[19] = 0x0; /*rnat*/
1231 p_ctx->ar[18] = (unsigned long)vmm_vcpu +
1232 ((sizeof(struct kvm_vcpu)+15) & ~15);
1233 p_ctx->ar[64] = 0x0; /*pfs*/
1234 p_ctx->cr[0] = 0x7e04UL;
1235 p_ctx->cr[2] = (unsigned long)kvm_vmm_info->vmm_ivt;
1236 p_ctx->cr[8] = 0x3c;
1237
1238 /*Initilize region register*/
1239 p_ctx->rr[0] = 0x30;
1240 p_ctx->rr[1] = 0x30;
1241 p_ctx->rr[2] = 0x30;
1242 p_ctx->rr[3] = 0x30;
1243 p_ctx->rr[4] = 0x30;
1244 p_ctx->rr[5] = 0x30;
1245 p_ctx->rr[7] = 0x30;
1246
1247 /*Initilize branch register 0*/
1248 p_ctx->br[0] = *(unsigned long *)kvm_vmm_info->vmm_entry;
1249
1250 vcpu->arch.vmm_rr = kvm->arch.vmm_init_rr;
1251 vcpu->arch.metaphysical_rr0 = kvm->arch.metaphysical_rr0;
1252 vcpu->arch.metaphysical_rr4 = kvm->arch.metaphysical_rr4;
1253
1254 hrtimer_init(&vcpu->arch.hlt_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
1255 vcpu->arch.hlt_timer.function = hlt_timer_fn;
1256
1257 vcpu->arch.last_run_cpu = -1;
a917f7af 1258 vcpu->arch.vpd = (struct vpd *)VPD_BASE(vcpu->vcpu_id);
b024b793
XZ		 1259 vcpu->arch.vsa_base = kvm_vsa_base;
1260 vcpu->arch.__gp = kvm_vmm_gp;
1261 vcpu->arch.dirty_log_lock_pa = __pa(&kvm->arch.dirty_log_lock);
a917f7af
XZ		 1262 vcpu->arch.vhpt.hash = (struct thash_data *)VHPT_BASE(vcpu->vcpu_id);
1263 vcpu->arch.vtlb.hash = (struct thash_data *)VTLB_BASE(vcpu->vcpu_id);
b024b793
XZ		 1264 init_ptce_info(vcpu);
1265
1266 r = 0;
1267out:
1268 return r;
1269}
1270
1271static int vti_vcpu_setup(struct kvm_vcpu *vcpu, int id)
1272{
1273 unsigned long psr;
1274 int r;
1275
1276 local_irq_save(psr);
1277 r = kvm_insert_vmm_mapping(vcpu);
457459c3 1278 local_irq_restore(psr);
b024b793
XZ		 1279 if (r)
1280 goto fail;
1281 r = kvm_vcpu_init(vcpu, vcpu->kvm, id);
1282 if (r)
1283 goto fail;
1284
1285 r = vti_init_vpd(vcpu);
1286 if (r) {
1287 printk(KERN_DEBUG"kvm: vpd init error!!\n");
1288 goto uninit;
1289 }
1290
1291 r = vti_create_vp(vcpu);
1292 if (r)
1293 goto uninit;
1294
1295 kvm_purge_vmm_mapping(vcpu);
b024b793
XZ		 1296
1297 return 0;
1298uninit:
1299 kvm_vcpu_uninit(vcpu);
1300fail:
1301 return r;
1302}
1303
1304struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
1305 unsigned int id)
1306{
1307 struct kvm_vcpu *vcpu;
1308 unsigned long vm_base = kvm->arch.vm_base;
1309 int r;
1310 int cpu;
1311
a917f7af
XZ		 1312 BUG_ON(sizeof(struct kvm_vcpu) > VCPU_STRUCT_SIZE/2);
1313
1314 r = -EINVAL;
1315 if (id >= KVM_MAX_VCPUS) {
1316 printk(KERN_ERR"kvm: Can't configure vcpus > %ld",
1317 KVM_MAX_VCPUS);
1318 goto fail;
1319 }
1320
b024b793
XZ		 1321 r = -ENOMEM;
1322 if (!vm_base) {
1323 printk(KERN_ERR"kvm: Create vcpu[%d] error!\n", id);
1324 goto fail;
1325 }
a917f7af
XZ		 1326 vcpu = (struct kvm_vcpu *)(vm_base + offsetof(struct kvm_vm_data,
1327 vcpu_data[id].vcpu_struct));
b024b793
XZ		 1328 vcpu->kvm = kvm;
1329
1330 cpu = get_cpu();
b024b793
XZ		 1331 r = vti_vcpu_setup(vcpu, id);
1332 put_cpu();
1333
1334 if (r) {
1335 printk(KERN_DEBUG"kvm: vcpu_setup error!!\n");
1336 goto fail;
1337 }
1338
1339 return vcpu;
1340fail:
1341 return ERR_PTR(r);
1342}
1343
1344int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
1345{
1346 return 0;
1347}
1348
1349int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1350{
1351 return -EINVAL;
1352}
1353
1354int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1355{
1356 return -EINVAL;
1357}
1358
d0bfb940
JK		 1359int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
1360 struct kvm_guest_debug *dbg)
b024b793
XZ		 1361{
1362 return -EINVAL;
1363}
1364
1365static void free_kvm(struct kvm *kvm)
1366{
1367 unsigned long vm_base = kvm->arch.vm_base;
1368
1369 if (vm_base) {
1370 memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
1371 free_pages(vm_base, get_order(KVM_VM_DATA_SIZE));
1372 }
1373
1374}
1375
1376static void kvm_release_vm_pages(struct kvm *kvm)
1377{
1378 struct kvm_memory_slot *memslot;
1379 int i, j;
1380 unsigned long base_gfn;
1381
1382 for (i = 0; i < kvm->nmemslots; i++) {
1383 memslot = &kvm->memslots[i];
1384 base_gfn = memslot->base_gfn;
1385
1386 for (j = 0; j < memslot->npages; j++) {
1387 if (memslot->rmap[j])
1388 put_page((struct page *)memslot->rmap[j]);
1389 }
1390 }
1391}
1392
ad8ba2cd
SY		 1393void kvm_arch_sync_events(struct kvm *kvm)
1394{
1395}
1396
b024b793
XZ		 1397void kvm_arch_destroy_vm(struct kvm *kvm)
1398{
2381ad24
XZ		 1399 kvm_iommu_unmap_guest(kvm);
1400#ifdef KVM_CAP_DEVICE_ASSIGNMENT
1401 kvm_free_all_assigned_devices(kvm);
1402#endif
b024b793
XZ		 1403 kfree(kvm->arch.vioapic);
1404 kvm_release_vm_pages(kvm);
1405 kvm_free_physmem(kvm);
1406 free_kvm(kvm);
1407}
1408
1409void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
1410{
1411}
1412
1413void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
1414{
1415 if (cpu != vcpu->cpu) {
1416 vcpu->cpu = cpu;
1417 if (vcpu->arch.ht_active)
1418 kvm_migrate_hlt_timer(vcpu);
1419 }
1420}
1421
1422#define SAVE_REGS(_x) regs->_x = vcpu->arch._x
1423
1424int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1425{
b024b793 1426 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
042b26ed
JS		 1427 int i;
1428
b024b793
XZ		 1429 vcpu_load(vcpu);
1430
1431 for (i = 0; i < 16; i++) {
1432 regs->vpd.vgr[i] = vpd->vgr[i];
1433 regs->vpd.vbgr[i] = vpd->vbgr[i];
1434 }
1435 for (i = 0; i < 128; i++)
1436 regs->vpd.vcr[i] = vpd->vcr[i];
1437 regs->vpd.vhpi = vpd->vhpi;
1438 regs->vpd.vnat = vpd->vnat;
1439 regs->vpd.vbnat = vpd->vbnat;
1440 regs->vpd.vpsr = vpd->vpsr;
1441 regs->vpd.vpr = vpd->vpr;
1442
042b26ed
JS		 1443 memcpy(&regs->saved_guest, &vcpu->arch.guest, sizeof(union context));
1444
b024b793
XZ		 1445 SAVE_REGS(mp_state);
1446 SAVE_REGS(vmm_rr);
1447 memcpy(regs->itrs, vcpu->arch.itrs, sizeof(struct thash_data) * NITRS);
1448 memcpy(regs->dtrs, vcpu->arch.dtrs, sizeof(struct thash_data) * NDTRS);
1449 SAVE_REGS(itr_regions);
1450 SAVE_REGS(dtr_regions);
1451 SAVE_REGS(tc_regions);
1452 SAVE_REGS(irq_check);
1453 SAVE_REGS(itc_check);
1454 SAVE_REGS(timer_check);
1455 SAVE_REGS(timer_pending);
1456 SAVE_REGS(last_itc);
1457 for (i = 0; i < 8; i++) {
1458 regs->vrr[i] = vcpu->arch.vrr[i];
1459 regs->ibr[i] = vcpu->arch.ibr[i];
1460 regs->dbr[i] = vcpu->arch.dbr[i];
1461 }
1462 for (i = 0; i < 4; i++)
1463 regs->insvc[i] = vcpu->arch.insvc[i];
c6c9fcdf 1464 regs->saved_itc = vcpu->arch.itc_offset + kvm_get_itc(vcpu);
b024b793
XZ		 1465 SAVE_REGS(xtp);
1466 SAVE_REGS(metaphysical_rr0);
1467 SAVE_REGS(metaphysical_rr4);
1468 SAVE_REGS(metaphysical_saved_rr0);
1469 SAVE_REGS(metaphysical_saved_rr4);
1470 SAVE_REGS(fp_psr);
1471 SAVE_REGS(saved_gp);
042b26ed 1472
b024b793 1473 vcpu_put(vcpu);
042b26ed 1474 return 0;
b024b793
XZ		 1475}
1476
e9a999fe
JS		 1477int kvm_arch_vcpu_ioctl_get_stack(struct kvm_vcpu *vcpu,
1478 struct kvm_ia64_vcpu_stack *stack)
1479{
1480 memcpy(stack, vcpu, sizeof(struct kvm_ia64_vcpu_stack));
1481 return 0;
1482}
1483
1484int kvm_arch_vcpu_ioctl_set_stack(struct kvm_vcpu *vcpu,
1485 struct kvm_ia64_vcpu_stack *stack)
1486{
1487 memcpy(vcpu + 1, &stack->stack[0] + sizeof(struct kvm_vcpu),
1488 sizeof(struct kvm_ia64_vcpu_stack) - sizeof(struct kvm_vcpu));
1489
1490 vcpu->arch.exit_data = ((struct kvm_vcpu *)stack)->arch.exit_data;
1491 return 0;
1492}
1493
b024b793
XZ		 1494void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
1495{
1496
1497 hrtimer_cancel(&vcpu->arch.hlt_timer);
1498 kfree(vcpu->arch.apic);
1499}
1500
1501
1502long kvm_arch_vcpu_ioctl(struct file *filp,
e9a999fe 1503 unsigned int ioctl, unsigned long arg)
b024b793 1504{
e9a999fe
JS		 1505 struct kvm_vcpu *vcpu = filp->private_data;
1506 void __user *argp = (void __user *)arg;
1507 struct kvm_ia64_vcpu_stack *stack = NULL;
1508 long r;
1509
1510 switch (ioctl) {
1511 case KVM_IA64_VCPU_GET_STACK: {
1512 struct kvm_ia64_vcpu_stack __user *user_stack;
1513 void __user *first_p = argp;
1514
1515 r = -EFAULT;
1516 if (copy_from_user(&user_stack, first_p, sizeof(void *)))
1517 goto out;
1518
1519 if (!access_ok(VERIFY_WRITE, user_stack,
1520 sizeof(struct kvm_ia64_vcpu_stack))) {
1521 printk(KERN_INFO "KVM_IA64_VCPU_GET_STACK: "
1522 "Illegal user destination address for stack\n");
1523 goto out;
1524 }
1525 stack = kzalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL);
1526 if (!stack) {
1527 r = -ENOMEM;
1528 goto out;
1529 }
1530
1531 r = kvm_arch_vcpu_ioctl_get_stack(vcpu, stack);
1532 if (r)
1533 goto out;
1534
1535 if (copy_to_user(user_stack, stack,
1536 sizeof(struct kvm_ia64_vcpu_stack)))
1537 goto out;
1538
1539 break;
1540 }
1541 case KVM_IA64_VCPU_SET_STACK: {
1542 struct kvm_ia64_vcpu_stack __user *user_stack;
1543 void __user *first_p = argp;
1544
1545 r = -EFAULT;
1546 if (copy_from_user(&user_stack, first_p, sizeof(void *)))
1547 goto out;
1548
1549 if (!access_ok(VERIFY_READ, user_stack,
1550 sizeof(struct kvm_ia64_vcpu_stack))) {
1551 printk(KERN_INFO "KVM_IA64_VCPU_SET_STACK: "
1552 "Illegal user address for stack\n");
1553 goto out;
1554 }
1555 stack = kmalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL);
1556 if (!stack) {
1557 r = -ENOMEM;
1558 goto out;
1559 }
1560 if (copy_from_user(stack, user_stack,
1561 sizeof(struct kvm_ia64_vcpu_stack)))
1562 goto out;
1563
1564 r = kvm_arch_vcpu_ioctl_set_stack(vcpu, stack);
1565 break;
1566 }
1567
1568 default:
1569 r = -EINVAL;
1570 }
1571
1572out:
1573 kfree(stack);
1574 return r;
b024b793
XZ		 1575}
1576
1577int kvm_arch_set_memory_region(struct kvm *kvm,
1578 struct kvm_userspace_memory_region *mem,
1579 struct kvm_memory_slot old,
1580 int user_alloc)
1581{
1582 unsigned long i;
1cbea809 1583 unsigned long pfn;
b024b793
XZ		 1584 int npages = mem->memory_size >> PAGE_SHIFT;
1585 struct kvm_memory_slot *memslot = &kvm->memslots[mem->slot];
1586 unsigned long base_gfn = memslot->base_gfn;
1587
a917f7af
XZ		 1588 if (base_gfn + npages > (KVM_MAX_MEM_SIZE >> PAGE_SHIFT))
1589 return -ENOMEM;
1590
b024b793 1591 for (i = 0; i < npages; i++) {
1cbea809
XZ		 1592 pfn = gfn_to_pfn(kvm, base_gfn + i);
1593 if (!kvm_is_mmio_pfn(pfn)) {
1594 kvm_set_pmt_entry(kvm, base_gfn + i,
1595 pfn << PAGE_SHIFT,
b010eb51 1596 _PAGE_AR_RWX | _PAGE_MA_WB);
1cbea809
XZ		 1597 memslot->rmap[i] = (unsigned long)pfn_to_page(pfn);
1598 } else {
1599 kvm_set_pmt_entry(kvm, base_gfn + i,
b010eb51 1600 GPFN_PHYS_MMIO | (pfn << PAGE_SHIFT),
1cbea809
XZ		 1601 _PAGE_MA_UC);
1602 memslot->rmap[i] = 0;
1603 }
b024b793
XZ		 1604 }
1605
1606 return 0;
1607}
1608
34d4cb8f
MT		 1609void kvm_arch_flush_shadow(struct kvm *kvm)
1610{
64f6afbd 1611 kvm_flush_remote_tlbs(kvm);
34d4cb8f 1612}
b024b793
XZ		 1613
1614long kvm_arch_dev_ioctl(struct file *filp,
e9a999fe 1615 unsigned int ioctl, unsigned long arg)
b024b793
XZ		 1616{
1617 return -EINVAL;
1618}
1619
1620void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
1621{
1622 kvm_vcpu_uninit(vcpu);
1623}
1624
1625static int vti_cpu_has_kvm_support(void)
1626{
1627 long avail = 1, status = 1, control = 1;
1628 long ret;
1629
1630 ret = ia64_pal_proc_get_features(&avail, &status, &control, 0);
1631 if (ret)
1632 goto out;
1633
1634 if (!(avail & PAL_PROC_VM_BIT))
1635 goto out;
1636
1637 printk(KERN_DEBUG"kvm: Hardware Supports VT\n");
1638
1639 ret = ia64_pal_vp_env_info(&kvm_vm_buffer_size, &vp_env_info);
1640 if (ret)
1641 goto out;
1642 printk(KERN_DEBUG"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size);
1643
1644 if (!(vp_env_info & VP_OPCODE)) {
1645 printk(KERN_WARNING"kvm: No opcode ability on hardware, "
1646 "vm_env_info:0x%lx\n", vp_env_info);
1647 }
1648
1649 return 1;
1650out:
1651 return 0;
1652}
1653
0b5d7a2c
JS		 1654
1655/*
1656 * On SN2, the ITC isn't stable, so copy in fast path code to use the
1657 * SN2 RTC, replacing the ITC based default verion.
1658 */
1659static void kvm_patch_vmm(struct kvm_vmm_info *vmm_info,
1660 struct module *module)
1661{
1662 unsigned long new_ar, new_ar_sn2;
1663 unsigned long module_base;
1664
1665 if (!ia64_platform_is("sn2"))
1666 return;
1667
1668 module_base = (unsigned long)module->module_core;
1669
1670 new_ar = kvm_vmm_base + vmm_info->patch_mov_ar - module_base;
1671 new_ar_sn2 = kvm_vmm_base + vmm_info->patch_mov_ar_sn2 - module_base;
1672
1673 printk(KERN_INFO "kvm: Patching ITC emulation to use SGI SN2 RTC "
1674 "as source\n");
1675
1676 /*
1677 * Copy the SN2 version of mov_ar into place. They are both
1678 * the same size, so 6 bundles is sufficient (6 * 0x10).
1679 */
1680 memcpy((void *)new_ar, (void *)new_ar_sn2, 0x60);
1681}
1682
b024b793 1683static int kvm_relocate_vmm(struct kvm_vmm_info *vmm_info,
0b5d7a2c 1684 struct module *module)
b024b793
XZ		 1685{
1686 unsigned long module_base;
1687 unsigned long vmm_size;
1688
1689 unsigned long vmm_offset, func_offset, fdesc_offset;
1690 struct fdesc *p_fdesc;
1691
1692 BUG_ON(!module);
1693
1694 if (!kvm_vmm_base) {
1695 printk("kvm: kvm area hasn't been initilized yet!!\n");
1696 return -EFAULT;
1697 }
1698
1699 /*Calculate new position of relocated vmm module.*/
1700 module_base = (unsigned long)module->module_core;
1701 vmm_size = module->core_size;
1702 if (unlikely(vmm_size > KVM_VMM_SIZE))
1703 return -EFAULT;
1704
1705 memcpy((void *)kvm_vmm_base, (void *)module_base, vmm_size);
0b5d7a2c 1706 kvm_patch_vmm(vmm_info, module);
b024b793
XZ		 1707 kvm_flush_icache(kvm_vmm_base, vmm_size);
1708
1709 /*Recalculate kvm_vmm_info based on new VMM*/
1710 vmm_offset = vmm_info->vmm_ivt - module_base;
1711 kvm_vmm_info->vmm_ivt = KVM_VMM_BASE + vmm_offset;
1712 printk(KERN_DEBUG"kvm: Relocated VMM's IVT Base Addr:%lx\n",
1713 kvm_vmm_info->vmm_ivt);
1714
1715 fdesc_offset = (unsigned long)vmm_info->vmm_entry - module_base;
1716 kvm_vmm_info->vmm_entry = (kvm_vmm_entry *)(KVM_VMM_BASE +
1717 fdesc_offset);
1718 func_offset = *(unsigned long *)vmm_info->vmm_entry - module_base;
1719 p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset);
1720 p_fdesc->ip = KVM_VMM_BASE + func_offset;
1721 p_fdesc->gp = KVM_VMM_BASE+(p_fdesc->gp - module_base);
1722
1723 printk(KERN_DEBUG"kvm: Relocated VMM's Init Entry Addr:%lx\n",
1724 KVM_VMM_BASE+func_offset);
1725
1726 fdesc_offset = (unsigned long)vmm_info->tramp_entry - module_base;
1727 kvm_vmm_info->tramp_entry = (kvm_tramp_entry *)(KVM_VMM_BASE +
1728 fdesc_offset);
1729 func_offset = *(unsigned long *)vmm_info->tramp_entry - module_base;
1730 p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset);
1731 p_fdesc->ip = KVM_VMM_BASE + func_offset;
1732 p_fdesc->gp = KVM_VMM_BASE + (p_fdesc->gp - module_base);
1733
1734 kvm_vmm_gp = p_fdesc->gp;
1735
1736 printk(KERN_DEBUG"kvm: Relocated VMM's Entry IP:%p\n",
1737 kvm_vmm_info->vmm_entry);
1738 printk(KERN_DEBUG"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n",
1739 KVM_VMM_BASE + func_offset);
1740
1741 return 0;
1742}
1743
1744int kvm_arch_init(void *opaque)
1745{
1746 int r;
1747 struct kvm_vmm_info *vmm_info = (struct kvm_vmm_info *)opaque;
1748
1749 if (!vti_cpu_has_kvm_support()) {
1750 printk(KERN_ERR "kvm: No Hardware Virtualization Support!\n");
1751 r = -EOPNOTSUPP;
1752 goto out;
1753 }
1754
1755 if (kvm_vmm_info) {
1756 printk(KERN_ERR "kvm: Already loaded VMM module!\n");
1757 r = -EEXIST;
1758 goto out;
1759 }
1760
1761 r = -ENOMEM;
1762 kvm_vmm_info = kzalloc(sizeof(struct kvm_vmm_info), GFP_KERNEL);
1763 if (!kvm_vmm_info)
1764 goto out;
1765
1766 if (kvm_alloc_vmm_area())
1767 goto out_free0;
1768
1769 r = kvm_relocate_vmm(vmm_info, vmm_info->module);
1770 if (r)
1771 goto out_free1;
1772
1773 return 0;
1774
1775out_free1:
1776 kvm_free_vmm_area();
1777out_free0:
1778 kfree(kvm_vmm_info);
1779out:
1780 return r;
1781}
1782
1783void kvm_arch_exit(void)
1784{
1785 kvm_free_vmm_area();
1786 kfree(kvm_vmm_info);
1787 kvm_vmm_info = NULL;
1788}
1789
1790static int kvm_ia64_sync_dirty_log(struct kvm *kvm,
1791 struct kvm_dirty_log *log)
1792{
1793 struct kvm_memory_slot *memslot;
1794 int r, i;
1795 long n, base;
a917f7af
XZ		 1796 unsigned long *dirty_bitmap = (unsigned long *)(kvm->arch.vm_base +
1797 offsetof(struct kvm_vm_data, kvm_mem_dirty_log));
b024b793
XZ		 1798
1799 r = -EINVAL;
1800 if (log->slot >= KVM_MEMORY_SLOTS)
1801 goto out;
1802
1803 memslot = &kvm->memslots[log->slot];
1804 r = -ENOENT;
1805 if (!memslot->dirty_bitmap)
1806 goto out;
1807
1808 n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
1809 base = memslot->base_gfn / BITS_PER_LONG;
1810
1811 for (i = 0; i < n/sizeof(long); ++i) {
1812 memslot->dirty_bitmap[i] = dirty_bitmap[base + i];
1813 dirty_bitmap[base + i] = 0;
1814 }
1815 r = 0;
1816out:
1817 return r;
1818}
1819
1820int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
1821 struct kvm_dirty_log *log)
1822{
1823 int r;
1824 int n;
1825 struct kvm_memory_slot *memslot;
1826 int is_dirty = 0;
1827
1828 spin_lock(&kvm->arch.dirty_log_lock);
1829
1830 r = kvm_ia64_sync_dirty_log(kvm, log);
1831 if (r)
1832 goto out;
1833
1834 r = kvm_get_dirty_log(kvm, log, &is_dirty);
1835 if (r)
1836 goto out;
1837
1838 /* If nothing is dirty, don't bother messing with page tables. */
1839 if (is_dirty) {
1840 kvm_flush_remote_tlbs(kvm);
1841 memslot = &kvm->memslots[log->slot];
1842 n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
1843 memset(memslot->dirty_bitmap, 0, n);
1844 }
1845 r = 0;
1846out:
1847 spin_unlock(&kvm->arch.dirty_log_lock);
1848 return r;
1849}
1850
1851int kvm_arch_hardware_setup(void)
1852{
1853 return 0;
1854}
1855
1856void kvm_arch_hardware_unsetup(void)
1857{
1858}
1859
b024b793
XZ		 1860void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
1861{
32f88400
MT		 1862 int me;
1863 int cpu = vcpu->cpu;
b024b793
XZ		 1864
1865 if (waitqueue_active(&vcpu->wq))
1866 wake_up_interruptible(&vcpu->wq);
1867
32f88400
MT		 1868 me = get_cpu();
1869 if (cpu != me && (unsigned) cpu < nr_cpu_ids && cpu_online(cpu))
1870 if (!test_and_set_bit(KVM_REQ_KICK, &vcpu->requests))
1871 smp_send_reschedule(cpu);
decc9016 1872 put_cpu();
b024b793
XZ		 1873}
1874
58c2dde1 1875int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq)
b024b793 1876{
58c2dde1 1877 return __apic_accept_irq(vcpu, irq->vector);
b024b793
XZ		 1878}
1879
1880int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest)
1881{
1882 return apic->vcpu->vcpu_id == dest;
1883}
1884
1885int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda)
1886{
1887 return 0;
1888}
1889
e1035715 1890int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2)
b024b793 1891{
e1035715 1892 return vcpu1->arch.xtp - vcpu2->arch.xtp;
b024b793
XZ		 1893}
1894
343f94fe
GN		 1895int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
1896 int short_hand, int dest, int dest_mode)
1897{
58c2dde1 1898 struct kvm_lapic *target = vcpu->arch.apic;
343f94fe
GN		 1899 return (dest_mode == 0) ?
1900 kvm_apic_match_physical_addr(target, dest) :
1901 kvm_apic_match_logical_addr(target, dest);
1902}
1903
b024b793
XZ		 1904static int find_highest_bits(int *dat)
1905{
1906 u32 bits, bitnum;
1907 int i;
1908
1909 /* loop for all 256 bits */
1910 for (i = 7; i >= 0 ; i--) {
1911 bits = dat[i];
1912 if (bits) {
1913 bitnum = fls(bits);
1914 return i * 32 + bitnum - 1;
1915 }
1916 }
1917
1918 return -1;
1919}
1920
1921int kvm_highest_pending_irq(struct kvm_vcpu *vcpu)
1922{
1923 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1924
1925 if (vpd->irr[0] & (1UL << NMI_VECTOR))
1926 return NMI_VECTOR;
1927 if (vpd->irr[0] & (1UL << ExtINT_VECTOR))
1928 return ExtINT_VECTOR;
1929
1930 return find_highest_bits((int *)&vpd->irr[0]);
1931}
1932
3d80840d
MT		 1933int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
1934{
decc9016 1935 return vcpu->arch.timer_fired;
3d80840d
MT		 1936}
1937
b024b793
XZ		 1938gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn)
1939{
1940 return gfn;
1941}
1942
1943int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
1944{
a1b37100
GN		 1945 return (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE) ||
1946 (kvm_highest_pending_irq(vcpu) != -1);
b024b793 1947}
62d9f0db
MT		 1948
1949int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
1950 struct kvm_mp_state *mp_state)
1951{
8c4b537d
XZ		 1952 vcpu_load(vcpu);
1953 mp_state->mp_state = vcpu->arch.mp_state;
1954 vcpu_put(vcpu);
1955 return 0;
1956}
1957
1958static int vcpu_reset(struct kvm_vcpu *vcpu)
1959{
1960 int r;
1961 long psr;
1962 local_irq_save(psr);
1963 r = kvm_insert_vmm_mapping(vcpu);
43890ae8 1964 local_irq_restore(psr);
8c4b537d
XZ		 1965 if (r)
1966 goto fail;
1967
1968 vcpu->arch.launched = 0;
1969 kvm_arch_vcpu_uninit(vcpu);
1970 r = kvm_arch_vcpu_init(vcpu);
1971 if (r)
1972 goto fail;
1973
1974 kvm_purge_vmm_mapping(vcpu);
1975 r = 0;
1976fail:
8c4b537d 1977 return r;
62d9f0db
MT		 1978}
1979
1980int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
1981 struct kvm_mp_state *mp_state)
1982{
8c4b537d
XZ		 1983 int r = 0;
1984
1985 vcpu_load(vcpu);
1986 vcpu->arch.mp_state = mp_state->mp_state;
1987 if (vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)
1988 r = vcpu_reset(vcpu);
1989 vcpu_put(vcpu);
1990 return r;
62d9f0db 1991}
ubuntu-zesty-kernel mirror