Commit | Line | Data |
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b024b793 | 1 | /* |
d7558148 | 2 | * kvm_ia64.c: Basic KVM support On Itanium series processors |
b024b793 XZ |
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 | |
56 | static unsigned long kvm_vmm_base; | |
57 | static unsigned long kvm_vsa_base; | |
58 | static unsigned long kvm_vm_buffer; | |
59 | static unsigned long kvm_vm_buffer_size; | |
60 | unsigned long kvm_vmm_gp; | |
61 | ||
62 | static long vp_env_info; | |
63 | ||
64 | static struct kvm_vmm_info *kvm_vmm_info; | |
65 | ||
66 | static DEFINE_PER_CPU(struct kvm_vcpu *, last_vcpu); | |
67 | ||
68 | struct kvm_stats_debugfs_item debugfs_entries[] = { | |
69 | { NULL } | |
70 | }; | |
71 | ||
c6c9fcdf JS |
72 | static 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 |
82 | static 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 | ||
93 | static 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 | ||
116 | long 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 | ||
126 | static DEFINE_SPINLOCK(vp_lock); | |
127 | ||
10474ae8 | 128 | int 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 | ||
163 | void 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 | ||
188 | void kvm_arch_check_processor_compat(void *rtn) | |
189 | { | |
190 | *(int *)rtn = 0; | |
191 | } | |
192 | ||
784aa3d7 | 193 | int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) |
b024b793 XZ |
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: |
100943c5 | 202 | case KVM_CAP_IOAPIC_POLARITY_IGNORED: |
b024b793 XZ |
203 | r = 1; |
204 | break; | |
7f39f8ac LV |
205 | case KVM_CAP_COALESCED_MMIO: |
206 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; | |
207 | break; | |
4cee4b72 | 208 | #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT |
2381ad24 | 209 | case KVM_CAP_IOMMU: |
a1b60c1c | 210 | r = iommu_present(&pci_bus_type); |
2381ad24 | 211 | break; |
4cee4b72 | 212 | #endif |
b024b793 XZ |
213 | default: |
214 | r = 0; | |
215 | } | |
216 | return r; | |
217 | ||
218 | } | |
219 | ||
b024b793 XZ |
220 | static int handle_vm_error(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) |
221 | { | |
222 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; | |
223 | kvm_run->hw.hardware_exit_reason = 1; | |
224 | return 0; | |
225 | } | |
226 | ||
227 | static int handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
228 | { | |
229 | struct kvm_mmio_req *p; | |
230 | struct kvm_io_device *mmio_dev; | |
bda9020e | 231 | int r; |
b024b793 XZ |
232 | |
233 | p = kvm_get_vcpu_ioreq(vcpu); | |
234 | ||
235 | if ((p->addr & PAGE_MASK) == IOAPIC_DEFAULT_BASE_ADDRESS) | |
236 | goto mmio; | |
237 | vcpu->mmio_needed = 1; | |
f78146b0 AK |
238 | vcpu->mmio_fragments[0].gpa = kvm_run->mmio.phys_addr = p->addr; |
239 | vcpu->mmio_fragments[0].len = kvm_run->mmio.len = p->size; | |
b024b793 XZ |
240 | vcpu->mmio_is_write = kvm_run->mmio.is_write = !p->dir; |
241 | ||
242 | if (vcpu->mmio_is_write) | |
f78146b0 | 243 | memcpy(vcpu->arch.mmio_data, &p->data, p->size); |
b024b793 XZ |
244 | memcpy(kvm_run->mmio.data, &p->data, p->size); |
245 | kvm_run->exit_reason = KVM_EXIT_MMIO; | |
246 | return 0; | |
247 | mmio: | |
bda9020e | 248 | if (p->dir) |
e93f8a0f | 249 | r = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, p->addr, |
bda9020e MT |
250 | p->size, &p->data); |
251 | else | |
e93f8a0f | 252 | r = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, p->addr, |
bda9020e MT |
253 | p->size, &p->data); |
254 | if (r) | |
b024b793 XZ |
255 | printk(KERN_ERR"kvm: No iodevice found! addr:%lx\n", p->addr); |
256 | p->state = STATE_IORESP_READY; | |
257 | ||
258 | return 1; | |
259 | } | |
260 | ||
261 | static int handle_pal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
262 | { | |
263 | struct exit_ctl_data *p; | |
264 | ||
265 | p = kvm_get_exit_data(vcpu); | |
266 | ||
267 | if (p->exit_reason == EXIT_REASON_PAL_CALL) | |
268 | return kvm_pal_emul(vcpu, kvm_run); | |
269 | else { | |
270 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; | |
271 | kvm_run->hw.hardware_exit_reason = 2; | |
272 | return 0; | |
273 | } | |
274 | } | |
275 | ||
276 | static int handle_sal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
277 | { | |
278 | struct exit_ctl_data *p; | |
279 | ||
280 | p = kvm_get_exit_data(vcpu); | |
281 | ||
282 | if (p->exit_reason == EXIT_REASON_SAL_CALL) { | |
283 | kvm_sal_emul(vcpu); | |
284 | return 1; | |
285 | } else { | |
286 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; | |
287 | kvm_run->hw.hardware_exit_reason = 3; | |
288 | return 0; | |
289 | } | |
290 | ||
291 | } | |
292 | ||
58c2dde1 GN |
293 | static int __apic_accept_irq(struct kvm_vcpu *vcpu, uint64_t vector) |
294 | { | |
295 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); | |
296 | ||
297 | if (!test_and_set_bit(vector, &vpd->irr[0])) { | |
298 | vcpu->arch.irq_new_pending = 1; | |
299 | kvm_vcpu_kick(vcpu); | |
300 | return 1; | |
301 | } | |
302 | return 0; | |
303 | } | |
304 | ||
b024b793 XZ |
305 | /* |
306 | * offset: address offset to IPI space. | |
307 | * value: deliver value. | |
308 | */ | |
309 | static void vcpu_deliver_ipi(struct kvm_vcpu *vcpu, uint64_t dm, | |
310 | uint64_t vector) | |
311 | { | |
312 | switch (dm) { | |
313 | case SAPIC_FIXED: | |
b024b793 XZ |
314 | break; |
315 | case SAPIC_NMI: | |
58c2dde1 | 316 | vector = 2; |
b024b793 XZ |
317 | break; |
318 | case SAPIC_EXTINT: | |
58c2dde1 | 319 | vector = 0; |
b024b793 XZ |
320 | break; |
321 | case SAPIC_INIT: | |
322 | case SAPIC_PMI: | |
323 | default: | |
324 | printk(KERN_ERR"kvm: Unimplemented Deliver reserved IPI!\n"); | |
58c2dde1 | 325 | return; |
b024b793 | 326 | } |
58c2dde1 | 327 | __apic_accept_irq(vcpu, vector); |
b024b793 XZ |
328 | } |
329 | ||
330 | static struct kvm_vcpu *lid_to_vcpu(struct kvm *kvm, unsigned long id, | |
331 | unsigned long eid) | |
332 | { | |
333 | union ia64_lid lid; | |
334 | int i; | |
988a2cae | 335 | struct kvm_vcpu *vcpu; |
b024b793 | 336 | |
988a2cae GN |
337 | kvm_for_each_vcpu(i, vcpu, kvm) { |
338 | lid.val = VCPU_LID(vcpu); | |
339 | if (lid.id == id && lid.eid == eid) | |
340 | return vcpu; | |
b024b793 XZ |
341 | } |
342 | ||
343 | return NULL; | |
344 | } | |
345 | ||
346 | static int handle_ipi(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
347 | { | |
348 | struct exit_ctl_data *p = kvm_get_exit_data(vcpu); | |
349 | struct kvm_vcpu *target_vcpu; | |
350 | struct kvm_pt_regs *regs; | |
351 | union ia64_ipi_a addr = p->u.ipi_data.addr; | |
352 | union ia64_ipi_d data = p->u.ipi_data.data; | |
353 | ||
354 | target_vcpu = lid_to_vcpu(vcpu->kvm, addr.id, addr.eid); | |
355 | if (!target_vcpu) | |
356 | return handle_vm_error(vcpu, kvm_run); | |
357 | ||
358 | if (!target_vcpu->arch.launched) { | |
359 | regs = vcpu_regs(target_vcpu); | |
360 | ||
361 | regs->cr_iip = vcpu->kvm->arch.rdv_sal_data.boot_ip; | |
362 | regs->r1 = vcpu->kvm->arch.rdv_sal_data.boot_gp; | |
363 | ||
a4535290 | 364 | target_vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE; |
b024b793 XZ |
365 | if (waitqueue_active(&target_vcpu->wq)) |
366 | wake_up_interruptible(&target_vcpu->wq); | |
367 | } else { | |
368 | vcpu_deliver_ipi(target_vcpu, data.dm, data.vector); | |
369 | if (target_vcpu != vcpu) | |
370 | kvm_vcpu_kick(target_vcpu); | |
371 | } | |
372 | ||
373 | return 1; | |
374 | } | |
375 | ||
376 | struct call_data { | |
377 | struct kvm_ptc_g ptc_g_data; | |
378 | struct kvm_vcpu *vcpu; | |
379 | }; | |
380 | ||
381 | static void vcpu_global_purge(void *info) | |
382 | { | |
383 | struct call_data *p = (struct call_data *)info; | |
384 | struct kvm_vcpu *vcpu = p->vcpu; | |
385 | ||
386 | if (test_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests)) | |
387 | return; | |
388 | ||
389 | set_bit(KVM_REQ_PTC_G, &vcpu->requests); | |
390 | if (vcpu->arch.ptc_g_count < MAX_PTC_G_NUM) { | |
391 | vcpu->arch.ptc_g_data[vcpu->arch.ptc_g_count++] = | |
392 | p->ptc_g_data; | |
393 | } else { | |
394 | clear_bit(KVM_REQ_PTC_G, &vcpu->requests); | |
395 | vcpu->arch.ptc_g_count = 0; | |
396 | set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests); | |
397 | } | |
398 | } | |
399 | ||
400 | static int handle_global_purge(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
401 | { | |
402 | struct exit_ctl_data *p = kvm_get_exit_data(vcpu); | |
403 | struct kvm *kvm = vcpu->kvm; | |
404 | struct call_data call_data; | |
405 | int i; | |
988a2cae | 406 | struct kvm_vcpu *vcpui; |
decc9016 | 407 | |
b024b793 XZ |
408 | call_data.ptc_g_data = p->u.ptc_g_data; |
409 | ||
988a2cae GN |
410 | kvm_for_each_vcpu(i, vcpui, kvm) { |
411 | if (vcpui->arch.mp_state == KVM_MP_STATE_UNINITIALIZED || | |
412 | vcpu == vcpui) | |
b024b793 XZ |
413 | continue; |
414 | ||
988a2cae GN |
415 | if (waitqueue_active(&vcpui->wq)) |
416 | wake_up_interruptible(&vcpui->wq); | |
b024b793 | 417 | |
988a2cae GN |
418 | if (vcpui->cpu != -1) { |
419 | call_data.vcpu = vcpui; | |
420 | smp_call_function_single(vcpui->cpu, | |
2f73ccab | 421 | vcpu_global_purge, &call_data, 1); |
b024b793 XZ |
422 | } else |
423 | printk(KERN_WARNING"kvm: Uninit vcpu received ipi!\n"); | |
424 | ||
425 | } | |
426 | return 1; | |
427 | } | |
428 | ||
429 | static int handle_switch_rr6(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
430 | { | |
431 | return 1; | |
432 | } | |
433 | ||
0c72ea7f JS |
434 | static int kvm_sn2_setup_mappings(struct kvm_vcpu *vcpu) |
435 | { | |
436 | unsigned long pte, rtc_phys_addr, map_addr; | |
437 | int slot; | |
438 | ||
439 | map_addr = KVM_VMM_BASE + (1UL << KVM_VMM_SHIFT); | |
440 | rtc_phys_addr = LOCAL_MMR_OFFSET | SH_RTC; | |
441 | pte = pte_val(mk_pte_phys(rtc_phys_addr, PAGE_KERNEL_UC)); | |
442 | slot = ia64_itr_entry(0x3, map_addr, pte, PAGE_SHIFT); | |
443 | vcpu->arch.sn_rtc_tr_slot = slot; | |
444 | if (slot < 0) { | |
445 | printk(KERN_ERR "Mayday mayday! RTC mapping failed!\n"); | |
446 | slot = 0; | |
447 | } | |
448 | return slot; | |
449 | } | |
450 | ||
b024b793 XZ |
451 | int kvm_emulate_halt(struct kvm_vcpu *vcpu) |
452 | { | |
453 | ||
454 | ktime_t kt; | |
455 | long itc_diff; | |
456 | unsigned long vcpu_now_itc; | |
b024b793 XZ |
457 | unsigned long expires; |
458 | struct hrtimer *p_ht = &vcpu->arch.hlt_timer; | |
459 | unsigned long cyc_per_usec = local_cpu_data->cyc_per_usec; | |
460 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); | |
461 | ||
decc9016 | 462 | if (irqchip_in_kernel(vcpu->kvm)) { |
b024b793 | 463 | |
c6c9fcdf | 464 | vcpu_now_itc = kvm_get_itc(vcpu) + vcpu->arch.itc_offset; |
b024b793 | 465 | |
decc9016 XZ |
466 | if (time_after(vcpu_now_itc, vpd->itm)) { |
467 | vcpu->arch.timer_check = 1; | |
468 | return 1; | |
469 | } | |
470 | itc_diff = vpd->itm - vcpu_now_itc; | |
471 | if (itc_diff < 0) | |
472 | itc_diff = -itc_diff; | |
473 | ||
474 | expires = div64_u64(itc_diff, cyc_per_usec); | |
475 | kt = ktime_set(0, 1000 * expires); | |
476 | ||
decc9016 XZ |
477 | vcpu->arch.ht_active = 1; |
478 | hrtimer_start(p_ht, kt, HRTIMER_MODE_ABS); | |
b024b793 | 479 | |
a4535290 | 480 | vcpu->arch.mp_state = KVM_MP_STATE_HALTED; |
b024b793 XZ |
481 | kvm_vcpu_block(vcpu); |
482 | hrtimer_cancel(p_ht); | |
483 | vcpu->arch.ht_active = 0; | |
484 | ||
09cec754 GN |
485 | if (test_and_clear_bit(KVM_REQ_UNHALT, &vcpu->requests) || |
486 | kvm_cpu_has_pending_timer(vcpu)) | |
decc9016 | 487 | if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED) |
09cec754 | 488 | vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE; |
decc9016 | 489 | |
a4535290 | 490 | if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE) |
b024b793 XZ |
491 | return -EINTR; |
492 | return 1; | |
493 | } else { | |
494 | printk(KERN_ERR"kvm: Unsupported userspace halt!"); | |
495 | return 0; | |
496 | } | |
497 | } | |
498 | ||
499 | static int handle_vm_shutdown(struct kvm_vcpu *vcpu, | |
500 | struct kvm_run *kvm_run) | |
501 | { | |
502 | kvm_run->exit_reason = KVM_EXIT_SHUTDOWN; | |
503 | return 0; | |
504 | } | |
505 | ||
506 | static int handle_external_interrupt(struct kvm_vcpu *vcpu, | |
507 | struct kvm_run *kvm_run) | |
508 | { | |
509 | return 1; | |
510 | } | |
511 | ||
7d637978 XZ |
512 | static int handle_vcpu_debug(struct kvm_vcpu *vcpu, |
513 | struct kvm_run *kvm_run) | |
514 | { | |
515 | printk("VMM: %s", vcpu->arch.log_buf); | |
516 | return 1; | |
517 | } | |
518 | ||
b024b793 XZ |
519 | static int (*kvm_vti_exit_handlers[])(struct kvm_vcpu *vcpu, |
520 | struct kvm_run *kvm_run) = { | |
521 | [EXIT_REASON_VM_PANIC] = handle_vm_error, | |
522 | [EXIT_REASON_MMIO_INSTRUCTION] = handle_mmio, | |
523 | [EXIT_REASON_PAL_CALL] = handle_pal_call, | |
524 | [EXIT_REASON_SAL_CALL] = handle_sal_call, | |
525 | [EXIT_REASON_SWITCH_RR6] = handle_switch_rr6, | |
526 | [EXIT_REASON_VM_DESTROY] = handle_vm_shutdown, | |
527 | [EXIT_REASON_EXTERNAL_INTERRUPT] = handle_external_interrupt, | |
528 | [EXIT_REASON_IPI] = handle_ipi, | |
529 | [EXIT_REASON_PTC_G] = handle_global_purge, | |
7d637978 | 530 | [EXIT_REASON_DEBUG] = handle_vcpu_debug, |
b024b793 XZ |
531 | |
532 | }; | |
533 | ||
534 | static const int kvm_vti_max_exit_handlers = | |
535 | sizeof(kvm_vti_exit_handlers)/sizeof(*kvm_vti_exit_handlers); | |
536 | ||
b024b793 XZ |
537 | static uint32_t kvm_get_exit_reason(struct kvm_vcpu *vcpu) |
538 | { | |
539 | struct exit_ctl_data *p_exit_data; | |
540 | ||
541 | p_exit_data = kvm_get_exit_data(vcpu); | |
542 | return p_exit_data->exit_reason; | |
543 | } | |
544 | ||
545 | /* | |
546 | * The guest has exited. See if we can fix it or if we need userspace | |
547 | * assistance. | |
548 | */ | |
549 | static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) | |
550 | { | |
551 | u32 exit_reason = kvm_get_exit_reason(vcpu); | |
552 | vcpu->arch.last_exit = exit_reason; | |
553 | ||
554 | if (exit_reason < kvm_vti_max_exit_handlers | |
555 | && kvm_vti_exit_handlers[exit_reason]) | |
556 | return kvm_vti_exit_handlers[exit_reason](vcpu, kvm_run); | |
557 | else { | |
558 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; | |
559 | kvm_run->hw.hardware_exit_reason = exit_reason; | |
560 | } | |
561 | return 0; | |
562 | } | |
563 | ||
564 | static inline void vti_set_rr6(unsigned long rr6) | |
565 | { | |
566 | ia64_set_rr(RR6, rr6); | |
567 | ia64_srlz_i(); | |
568 | } | |
569 | ||
570 | static int kvm_insert_vmm_mapping(struct kvm_vcpu *vcpu) | |
571 | { | |
572 | unsigned long pte; | |
573 | struct kvm *kvm = vcpu->kvm; | |
574 | int r; | |
575 | ||
576 | /*Insert a pair of tr to map vmm*/ | |
577 | pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL)); | |
578 | r = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT); | |
579 | if (r < 0) | |
580 | goto out; | |
581 | vcpu->arch.vmm_tr_slot = r; | |
582 | /*Insert a pairt of tr to map data of vm*/ | |
583 | pte = pte_val(mk_pte_phys(__pa(kvm->arch.vm_base), PAGE_KERNEL)); | |
584 | r = ia64_itr_entry(0x3, KVM_VM_DATA_BASE, | |
585 | pte, KVM_VM_DATA_SHIFT); | |
586 | if (r < 0) | |
587 | goto out; | |
588 | vcpu->arch.vm_tr_slot = r; | |
0c72ea7f JS |
589 | |
590 | #if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC) | |
591 | if (kvm->arch.is_sn2) { | |
592 | r = kvm_sn2_setup_mappings(vcpu); | |
593 | if (r < 0) | |
594 | goto out; | |
595 | } | |
596 | #endif | |
597 | ||
b024b793 XZ |
598 | r = 0; |
599 | out: | |
600 | return r; | |
b024b793 XZ |
601 | } |
602 | ||
603 | static void kvm_purge_vmm_mapping(struct kvm_vcpu *vcpu) | |
604 | { | |
0c72ea7f | 605 | struct kvm *kvm = vcpu->kvm; |
b024b793 XZ |
606 | ia64_ptr_entry(0x3, vcpu->arch.vmm_tr_slot); |
607 | ia64_ptr_entry(0x3, vcpu->arch.vm_tr_slot); | |
0c72ea7f JS |
608 | #if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC) |
609 | if (kvm->arch.is_sn2) | |
610 | ia64_ptr_entry(0x3, vcpu->arch.sn_rtc_tr_slot); | |
611 | #endif | |
b024b793 XZ |
612 | } |
613 | ||
614 | static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu) | |
615 | { | |
4d13c3b0 JS |
616 | unsigned long psr; |
617 | int r; | |
b024b793 XZ |
618 | int cpu = smp_processor_id(); |
619 | ||
620 | if (vcpu->arch.last_run_cpu != cpu || | |
621 | per_cpu(last_vcpu, cpu) != vcpu) { | |
622 | per_cpu(last_vcpu, cpu) = vcpu; | |
623 | vcpu->arch.last_run_cpu = cpu; | |
624 | kvm_flush_tlb_all(); | |
625 | } | |
626 | ||
627 | vcpu->arch.host_rr6 = ia64_get_rr(RR6); | |
628 | vti_set_rr6(vcpu->arch.vmm_rr); | |
4d13c3b0 JS |
629 | local_irq_save(psr); |
630 | r = kvm_insert_vmm_mapping(vcpu); | |
631 | local_irq_restore(psr); | |
632 | return r; | |
b024b793 | 633 | } |
c6b60c69 | 634 | |
b024b793 XZ |
635 | static void kvm_vcpu_post_transition(struct kvm_vcpu *vcpu) |
636 | { | |
637 | kvm_purge_vmm_mapping(vcpu); | |
638 | vti_set_rr6(vcpu->arch.host_rr6); | |
639 | } | |
640 | ||
c6b60c69 | 641 | static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) |
b024b793 XZ |
642 | { |
643 | union context *host_ctx, *guest_ctx; | |
f656ce01 | 644 | int r, idx; |
b024b793 | 645 | |
f656ce01 | 646 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
b024b793 XZ |
647 | |
648 | again: | |
b024b793 | 649 | if (signal_pending(current)) { |
b024b793 XZ |
650 | r = -EINTR; |
651 | kvm_run->exit_reason = KVM_EXIT_INTR; | |
652 | goto out; | |
653 | } | |
654 | ||
d24d2c1c JS |
655 | preempt_disable(); |
656 | local_irq_disable(); | |
657 | ||
c6b60c69 JS |
658 | /*Get host and guest context with guest address space.*/ |
659 | host_ctx = kvm_get_host_context(vcpu); | |
660 | guest_ctx = kvm_get_guest_context(vcpu); | |
661 | ||
32f88400 | 662 | clear_bit(KVM_REQ_KICK, &vcpu->requests); |
c6b60c69 JS |
663 | |
664 | r = kvm_vcpu_pre_transition(vcpu); | |
665 | if (r < 0) | |
666 | goto vcpu_run_fail; | |
667 | ||
f656ce01 | 668 | srcu_read_unlock(&vcpu->kvm->srcu, idx); |
6b7e2d09 | 669 | vcpu->mode = IN_GUEST_MODE; |
b024b793 | 670 | kvm_guest_enter(); |
c6b60c69 JS |
671 | |
672 | /* | |
673 | * Transition to the guest | |
674 | */ | |
675 | kvm_vmm_info->tramp_entry(host_ctx, guest_ctx); | |
676 | ||
677 | kvm_vcpu_post_transition(vcpu); | |
b024b793 XZ |
678 | |
679 | vcpu->arch.launched = 1; | |
32f88400 | 680 | set_bit(KVM_REQ_KICK, &vcpu->requests); |
b024b793 XZ |
681 | local_irq_enable(); |
682 | ||
683 | /* | |
684 | * We must have an instruction between local_irq_enable() and | |
685 | * kvm_guest_exit(), so the timer interrupt isn't delayed by | |
686 | * the interrupt shadow. The stat.exits increment will do nicely. | |
687 | * But we need to prevent reordering, hence this barrier(): | |
688 | */ | |
689 | barrier(); | |
b024b793 | 690 | kvm_guest_exit(); |
6b7e2d09 | 691 | vcpu->mode = OUTSIDE_GUEST_MODE; |
b024b793 XZ |
692 | preempt_enable(); |
693 | ||
f656ce01 | 694 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
c6b60c69 | 695 | |
b024b793 XZ |
696 | r = kvm_handle_exit(kvm_run, vcpu); |
697 | ||
698 | if (r > 0) { | |
699 | if (!need_resched()) | |
700 | goto again; | |
701 | } | |
702 | ||
703 | out: | |
f656ce01 | 704 | srcu_read_unlock(&vcpu->kvm->srcu, idx); |
b024b793 | 705 | if (r > 0) { |
c08ac06a | 706 | cond_resched(); |
f656ce01 | 707 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
b024b793 XZ |
708 | goto again; |
709 | } | |
710 | ||
711 | return r; | |
c6b60c69 JS |
712 | |
713 | vcpu_run_fail: | |
714 | local_irq_enable(); | |
715 | preempt_enable(); | |
716 | kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY; | |
717 | goto out; | |
b024b793 XZ |
718 | } |
719 | ||
720 | static void kvm_set_mmio_data(struct kvm_vcpu *vcpu) | |
721 | { | |
722 | struct kvm_mmio_req *p = kvm_get_vcpu_ioreq(vcpu); | |
723 | ||
724 | if (!vcpu->mmio_is_write) | |
f78146b0 | 725 | memcpy(&p->data, vcpu->arch.mmio_data, 8); |
b024b793 XZ |
726 | p->state = STATE_IORESP_READY; |
727 | } | |
728 | ||
729 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
730 | { | |
731 | int r; | |
732 | sigset_t sigsaved; | |
733 | ||
a2e4e289 XZ |
734 | if (vcpu->sigset_active) |
735 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
736 | ||
a4535290 | 737 | if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) { |
b024b793 | 738 | kvm_vcpu_block(vcpu); |
decc9016 | 739 | clear_bit(KVM_REQ_UNHALT, &vcpu->requests); |
a2e4e289 XZ |
740 | r = -EAGAIN; |
741 | goto out; | |
b024b793 XZ |
742 | } |
743 | ||
b024b793 | 744 | if (vcpu->mmio_needed) { |
f78146b0 | 745 | memcpy(vcpu->arch.mmio_data, kvm_run->mmio.data, 8); |
b024b793 XZ |
746 | kvm_set_mmio_data(vcpu); |
747 | vcpu->mmio_read_completed = 1; | |
748 | vcpu->mmio_needed = 0; | |
749 | } | |
750 | r = __vcpu_run(vcpu, kvm_run); | |
a2e4e289 | 751 | out: |
b024b793 XZ |
752 | if (vcpu->sigset_active) |
753 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
754 | ||
b024b793 XZ |
755 | return r; |
756 | } | |
757 | ||
d89f5eff | 758 | struct kvm *kvm_arch_alloc_vm(void) |
b024b793 XZ |
759 | { |
760 | ||
761 | struct kvm *kvm; | |
762 | uint64_t vm_base; | |
763 | ||
a917f7af XZ |
764 | BUG_ON(sizeof(struct kvm) > KVM_VM_STRUCT_SIZE); |
765 | ||
b024b793 XZ |
766 | vm_base = __get_free_pages(GFP_KERNEL, get_order(KVM_VM_DATA_SIZE)); |
767 | ||
768 | if (!vm_base) | |
d89f5eff | 769 | return NULL; |
b024b793 | 770 | |
b024b793 | 771 | memset((void *)vm_base, 0, KVM_VM_DATA_SIZE); |
a917f7af XZ |
772 | kvm = (struct kvm *)(vm_base + |
773 | offsetof(struct kvm_vm_data, kvm_vm_struct)); | |
b024b793 | 774 | kvm->arch.vm_base = vm_base; |
a917f7af | 775 | printk(KERN_DEBUG"kvm: vm's data area:0x%lx\n", vm_base); |
b024b793 XZ |
776 | |
777 | return kvm; | |
778 | } | |
779 | ||
60f9a9ef | 780 | struct kvm_ia64_io_range { |
b024b793 XZ |
781 | unsigned long start; |
782 | unsigned long size; | |
783 | unsigned long type; | |
784 | }; | |
785 | ||
60f9a9ef | 786 | static const struct kvm_ia64_io_range io_ranges[] = { |
b024b793 XZ |
787 | {VGA_IO_START, VGA_IO_SIZE, GPFN_FRAME_BUFFER}, |
788 | {MMIO_START, MMIO_SIZE, GPFN_LOW_MMIO}, | |
789 | {LEGACY_IO_START, LEGACY_IO_SIZE, GPFN_LEGACY_IO}, | |
790 | {IO_SAPIC_START, IO_SAPIC_SIZE, GPFN_IOSAPIC}, | |
791 | {PIB_START, PIB_SIZE, GPFN_PIB}, | |
792 | }; | |
793 | ||
794 | static void kvm_build_io_pmt(struct kvm *kvm) | |
795 | { | |
796 | unsigned long i, j; | |
797 | ||
798 | /* Mark I/O ranges */ | |
799 | for (i = 0; i < (sizeof(io_ranges) / sizeof(struct kvm_io_range)); | |
800 | i++) { | |
801 | for (j = io_ranges[i].start; | |
802 | j < io_ranges[i].start + io_ranges[i].size; | |
803 | j += PAGE_SIZE) | |
804 | kvm_set_pmt_entry(kvm, j >> PAGE_SHIFT, | |
805 | io_ranges[i].type, 0); | |
806 | } | |
807 | ||
808 | } | |
809 | ||
810 | /*Use unused rids to virtualize guest rid.*/ | |
811 | #define GUEST_PHYSICAL_RR0 0x1739 | |
812 | #define GUEST_PHYSICAL_RR4 0x2739 | |
813 | #define VMM_INIT_RR 0x1660 | |
814 | ||
e08b9637 | 815 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) |
b024b793 | 816 | { |
b024b793 XZ |
817 | BUG_ON(!kvm); |
818 | ||
e08b9637 CO |
819 | if (type) |
820 | return -EINVAL; | |
821 | ||
d89f5eff JK |
822 | kvm->arch.is_sn2 = ia64_platform_is("sn2"); |
823 | ||
b024b793 XZ |
824 | kvm->arch.metaphysical_rr0 = GUEST_PHYSICAL_RR0; |
825 | kvm->arch.metaphysical_rr4 = GUEST_PHYSICAL_RR4; | |
826 | kvm->arch.vmm_init_rr = VMM_INIT_RR; | |
827 | ||
b024b793 XZ |
828 | /* |
829 | *Fill P2M entries for MMIO/IO ranges | |
830 | */ | |
831 | kvm_build_io_pmt(kvm); | |
832 | ||
2381ad24 | 833 | INIT_LIST_HEAD(&kvm->arch.assigned_dev_head); |
5550af4d SY |
834 | |
835 | /* Reserve bit 0 of irq_sources_bitmap for userspace irq source */ | |
836 | set_bit(KVM_USERSPACE_IRQ_SOURCE_ID, &kvm->arch.irq_sources_bitmap); | |
b024b793 | 837 | |
d89f5eff | 838 | return 0; |
b024b793 XZ |
839 | } |
840 | ||
841 | static int kvm_vm_ioctl_get_irqchip(struct kvm *kvm, | |
842 | struct kvm_irqchip *chip) | |
843 | { | |
844 | int r; | |
845 | ||
846 | r = 0; | |
847 | switch (chip->chip_id) { | |
848 | case KVM_IRQCHIP_IOAPIC: | |
eba0226b | 849 | r = kvm_get_ioapic(kvm, &chip->chip.ioapic); |
b024b793 XZ |
850 | break; |
851 | default: | |
852 | r = -EINVAL; | |
853 | break; | |
854 | } | |
855 | return r; | |
856 | } | |
857 | ||
858 | static int kvm_vm_ioctl_set_irqchip(struct kvm *kvm, struct kvm_irqchip *chip) | |
859 | { | |
860 | int r; | |
861 | ||
862 | r = 0; | |
863 | switch (chip->chip_id) { | |
864 | case KVM_IRQCHIP_IOAPIC: | |
eba0226b | 865 | r = kvm_set_ioapic(kvm, &chip->chip.ioapic); |
b024b793 XZ |
866 | break; |
867 | default: | |
868 | r = -EINVAL; | |
869 | break; | |
870 | } | |
871 | return r; | |
872 | } | |
873 | ||
874 | #define RESTORE_REGS(_x) vcpu->arch._x = regs->_x | |
875 | ||
876 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) | |
877 | { | |
b024b793 | 878 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); |
042b26ed | 879 | int i; |
b024b793 | 880 | |
b024b793 XZ |
881 | for (i = 0; i < 16; i++) { |
882 | vpd->vgr[i] = regs->vpd.vgr[i]; | |
883 | vpd->vbgr[i] = regs->vpd.vbgr[i]; | |
884 | } | |
885 | for (i = 0; i < 128; i++) | |
886 | vpd->vcr[i] = regs->vpd.vcr[i]; | |
887 | vpd->vhpi = regs->vpd.vhpi; | |
888 | vpd->vnat = regs->vpd.vnat; | |
889 | vpd->vbnat = regs->vpd.vbnat; | |
890 | vpd->vpsr = regs->vpd.vpsr; | |
891 | ||
892 | vpd->vpr = regs->vpd.vpr; | |
893 | ||
042b26ed | 894 | memcpy(&vcpu->arch.guest, ®s->saved_guest, sizeof(union context)); |
b024b793 XZ |
895 | |
896 | RESTORE_REGS(mp_state); | |
897 | RESTORE_REGS(vmm_rr); | |
898 | memcpy(vcpu->arch.itrs, regs->itrs, sizeof(struct thash_data) * NITRS); | |
899 | memcpy(vcpu->arch.dtrs, regs->dtrs, sizeof(struct thash_data) * NDTRS); | |
900 | RESTORE_REGS(itr_regions); | |
901 | RESTORE_REGS(dtr_regions); | |
902 | RESTORE_REGS(tc_regions); | |
903 | RESTORE_REGS(irq_check); | |
904 | RESTORE_REGS(itc_check); | |
905 | RESTORE_REGS(timer_check); | |
906 | RESTORE_REGS(timer_pending); | |
907 | RESTORE_REGS(last_itc); | |
908 | for (i = 0; i < 8; i++) { | |
909 | vcpu->arch.vrr[i] = regs->vrr[i]; | |
910 | vcpu->arch.ibr[i] = regs->ibr[i]; | |
911 | vcpu->arch.dbr[i] = regs->dbr[i]; | |
912 | } | |
913 | for (i = 0; i < 4; i++) | |
914 | vcpu->arch.insvc[i] = regs->insvc[i]; | |
915 | RESTORE_REGS(xtp); | |
916 | RESTORE_REGS(metaphysical_rr0); | |
917 | RESTORE_REGS(metaphysical_rr4); | |
918 | RESTORE_REGS(metaphysical_saved_rr0); | |
919 | RESTORE_REGS(metaphysical_saved_rr4); | |
920 | RESTORE_REGS(fp_psr); | |
921 | RESTORE_REGS(saved_gp); | |
922 | ||
923 | vcpu->arch.irq_new_pending = 1; | |
c6c9fcdf | 924 | vcpu->arch.itc_offset = regs->saved_itc - kvm_get_itc(vcpu); |
b024b793 XZ |
925 | set_bit(KVM_REQ_RESUME, &vcpu->requests); |
926 | ||
042b26ed | 927 | return 0; |
b024b793 XZ |
928 | } |
929 | ||
e6062647 YZ |
930 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event, |
931 | bool line_status) | |
23d43cf9 CD |
932 | { |
933 | if (!irqchip_in_kernel(kvm)) | |
934 | return -ENXIO; | |
935 | ||
936 | irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, | |
e6062647 YZ |
937 | irq_event->irq, irq_event->level, |
938 | line_status); | |
23d43cf9 CD |
939 | return 0; |
940 | } | |
941 | ||
b024b793 XZ |
942 | long kvm_arch_vm_ioctl(struct file *filp, |
943 | unsigned int ioctl, unsigned long arg) | |
944 | { | |
945 | struct kvm *kvm = filp->private_data; | |
946 | void __user *argp = (void __user *)arg; | |
367e1319 | 947 | int r = -ENOTTY; |
b024b793 XZ |
948 | |
949 | switch (ioctl) { | |
b024b793 XZ |
950 | case KVM_CREATE_IRQCHIP: |
951 | r = -EFAULT; | |
952 | r = kvm_ioapic_init(kvm); | |
953 | if (r) | |
954 | goto out; | |
399ec807 AK |
955 | r = kvm_setup_default_irq_routing(kvm); |
956 | if (r) { | |
175504cd | 957 | mutex_lock(&kvm->slots_lock); |
4b7bb921 | 958 | kvm_ioapic_destroy(kvm); |
175504cd | 959 | mutex_unlock(&kvm->slots_lock); |
399ec807 AK |
960 | goto out; |
961 | } | |
b024b793 | 962 | break; |
b024b793 XZ |
963 | case KVM_GET_IRQCHIP: { |
964 | /* 0: PIC master, 1: PIC slave, 2: IOAPIC */ | |
965 | struct kvm_irqchip chip; | |
966 | ||
967 | r = -EFAULT; | |
968 | if (copy_from_user(&chip, argp, sizeof chip)) | |
969 | goto out; | |
970 | r = -ENXIO; | |
971 | if (!irqchip_in_kernel(kvm)) | |
972 | goto out; | |
973 | r = kvm_vm_ioctl_get_irqchip(kvm, &chip); | |
974 | if (r) | |
975 | goto out; | |
976 | r = -EFAULT; | |
977 | if (copy_to_user(argp, &chip, sizeof chip)) | |
978 | goto out; | |
979 | r = 0; | |
980 | break; | |
981 | } | |
982 | case KVM_SET_IRQCHIP: { | |
983 | /* 0: PIC master, 1: PIC slave, 2: IOAPIC */ | |
984 | struct kvm_irqchip chip; | |
985 | ||
986 | r = -EFAULT; | |
987 | if (copy_from_user(&chip, argp, sizeof chip)) | |
988 | goto out; | |
989 | r = -ENXIO; | |
990 | if (!irqchip_in_kernel(kvm)) | |
991 | goto out; | |
992 | r = kvm_vm_ioctl_set_irqchip(kvm, &chip); | |
993 | if (r) | |
994 | goto out; | |
995 | r = 0; | |
996 | break; | |
997 | } | |
998 | default: | |
999 | ; | |
1000 | } | |
1001 | out: | |
1002 | return r; | |
1003 | } | |
1004 | ||
1005 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
1006 | struct kvm_sregs *sregs) | |
1007 | { | |
1008 | return -EINVAL; | |
1009 | } | |
1010 | ||
1011 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
1012 | struct kvm_sregs *sregs) | |
1013 | { | |
1014 | return -EINVAL; | |
1015 | ||
1016 | } | |
1017 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, | |
1018 | struct kvm_translation *tr) | |
1019 | { | |
1020 | ||
1021 | return -EINVAL; | |
1022 | } | |
1023 | ||
1024 | static int kvm_alloc_vmm_area(void) | |
1025 | { | |
1026 | if (!kvm_vmm_base && (kvm_vm_buffer_size < KVM_VM_BUFFER_SIZE)) { | |
1027 | kvm_vmm_base = __get_free_pages(GFP_KERNEL, | |
1028 | get_order(KVM_VMM_SIZE)); | |
1029 | if (!kvm_vmm_base) | |
1030 | return -ENOMEM; | |
1031 | ||
1032 | memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE); | |
1033 | kvm_vm_buffer = kvm_vmm_base + VMM_SIZE; | |
1034 | ||
1035 | printk(KERN_DEBUG"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n", | |
1036 | kvm_vmm_base, kvm_vm_buffer); | |
1037 | } | |
1038 | ||
1039 | return 0; | |
1040 | } | |
1041 | ||
1042 | static void kvm_free_vmm_area(void) | |
1043 | { | |
1044 | if (kvm_vmm_base) { | |
1045 | /*Zero this area before free to avoid bits leak!!*/ | |
1046 | memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE); | |
1047 | free_pages(kvm_vmm_base, get_order(KVM_VMM_SIZE)); | |
1048 | kvm_vmm_base = 0; | |
1049 | kvm_vm_buffer = 0; | |
1050 | kvm_vsa_base = 0; | |
1051 | } | |
1052 | } | |
1053 | ||
b024b793 XZ |
1054 | static int vti_init_vpd(struct kvm_vcpu *vcpu) |
1055 | { | |
1056 | int i; | |
1057 | union cpuid3_t cpuid3; | |
1058 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); | |
1059 | ||
1060 | if (IS_ERR(vpd)) | |
1061 | return PTR_ERR(vpd); | |
1062 | ||
1063 | /* CPUID init */ | |
1064 | for (i = 0; i < 5; i++) | |
1065 | vpd->vcpuid[i] = ia64_get_cpuid(i); | |
1066 | ||
1067 | /* Limit the CPUID number to 5 */ | |
1068 | cpuid3.value = vpd->vcpuid[3]; | |
1069 | cpuid3.number = 4; /* 5 - 1 */ | |
1070 | vpd->vcpuid[3] = cpuid3.value; | |
1071 | ||
1072 | /*Set vac and vdc fields*/ | |
1073 | vpd->vac.a_from_int_cr = 1; | |
1074 | vpd->vac.a_to_int_cr = 1; | |
1075 | vpd->vac.a_from_psr = 1; | |
1076 | vpd->vac.a_from_cpuid = 1; | |
1077 | vpd->vac.a_cover = 1; | |
1078 | vpd->vac.a_bsw = 1; | |
1079 | vpd->vac.a_int = 1; | |
1080 | vpd->vdc.d_vmsw = 1; | |
1081 | ||
1082 | /*Set virtual buffer*/ | |
1083 | vpd->virt_env_vaddr = KVM_VM_BUFFER_BASE; | |
1084 | ||
1085 | return 0; | |
1086 | } | |
1087 | ||
1088 | static int vti_create_vp(struct kvm_vcpu *vcpu) | |
1089 | { | |
1090 | long ret; | |
1091 | struct vpd *vpd = vcpu->arch.vpd; | |
1092 | unsigned long vmm_ivt; | |
1093 | ||
1094 | vmm_ivt = kvm_vmm_info->vmm_ivt; | |
1095 | ||
1096 | printk(KERN_DEBUG "kvm: vcpu:%p,ivt: 0x%lx\n", vcpu, vmm_ivt); | |
1097 | ||
1098 | ret = ia64_pal_vp_create((u64 *)vpd, (u64 *)vmm_ivt, 0); | |
1099 | ||
1100 | if (ret) { | |
1101 | printk(KERN_ERR"kvm: ia64_pal_vp_create failed!\n"); | |
1102 | return -EINVAL; | |
1103 | } | |
1104 | return 0; | |
1105 | } | |
1106 | ||
1107 | static void init_ptce_info(struct kvm_vcpu *vcpu) | |
1108 | { | |
1109 | ia64_ptce_info_t ptce = {0}; | |
1110 | ||
1111 | ia64_get_ptce(&ptce); | |
1112 | vcpu->arch.ptce_base = ptce.base; | |
1113 | vcpu->arch.ptce_count[0] = ptce.count[0]; | |
1114 | vcpu->arch.ptce_count[1] = ptce.count[1]; | |
1115 | vcpu->arch.ptce_stride[0] = ptce.stride[0]; | |
1116 | vcpu->arch.ptce_stride[1] = ptce.stride[1]; | |
1117 | } | |
1118 | ||
1119 | static void kvm_migrate_hlt_timer(struct kvm_vcpu *vcpu) | |
1120 | { | |
1121 | struct hrtimer *p_ht = &vcpu->arch.hlt_timer; | |
1122 | ||
1123 | if (hrtimer_cancel(p_ht)) | |
18dd36af | 1124 | hrtimer_start_expires(p_ht, HRTIMER_MODE_ABS); |
b024b793 XZ |
1125 | } |
1126 | ||
1127 | static enum hrtimer_restart hlt_timer_fn(struct hrtimer *data) | |
1128 | { | |
1129 | struct kvm_vcpu *vcpu; | |
1130 | wait_queue_head_t *q; | |
1131 | ||
1132 | vcpu = container_of(data, struct kvm_vcpu, arch.hlt_timer); | |
decc9016 XZ |
1133 | q = &vcpu->wq; |
1134 | ||
a4535290 | 1135 | if (vcpu->arch.mp_state != KVM_MP_STATE_HALTED) |
b024b793 XZ |
1136 | goto out; |
1137 | ||
decc9016 | 1138 | if (waitqueue_active(q)) |
b024b793 | 1139 | wake_up_interruptible(q); |
decc9016 | 1140 | |
b024b793 | 1141 | out: |
decc9016 | 1142 | vcpu->arch.timer_fired = 1; |
b024b793 XZ |
1143 | vcpu->arch.timer_check = 1; |
1144 | return HRTIMER_NORESTART; | |
1145 | } | |
1146 | ||
1147 | #define PALE_RESET_ENTRY 0x80000000ffffffb0UL | |
1148 | ||
3e515705 AK |
1149 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) |
1150 | { | |
8281715b | 1151 | return irqchip_in_kernel(vcpu->kvm) == (vcpu->arch.apic != NULL); |
3e515705 AK |
1152 | } |
1153 | ||
b024b793 XZ |
1154 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
1155 | { | |
1156 | struct kvm_vcpu *v; | |
1157 | int r; | |
1158 | int i; | |
1159 | long itc_offset; | |
1160 | struct kvm *kvm = vcpu->kvm; | |
1161 | struct kvm_pt_regs *regs = vcpu_regs(vcpu); | |
1162 | ||
1163 | union context *p_ctx = &vcpu->arch.guest; | |
1164 | struct kvm_vcpu *vmm_vcpu = to_guest(vcpu->kvm, vcpu); | |
1165 | ||
1166 | /*Init vcpu context for first run.*/ | |
1167 | if (IS_ERR(vmm_vcpu)) | |
1168 | return PTR_ERR(vmm_vcpu); | |
1169 | ||
c5af89b6 | 1170 | if (kvm_vcpu_is_bsp(vcpu)) { |
a4535290 | 1171 | vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE; |
b024b793 XZ |
1172 | |
1173 | /*Set entry address for first run.*/ | |
1174 | regs->cr_iip = PALE_RESET_ENTRY; | |
1175 | ||
a917f7af | 1176 | /*Initialize itc offset for vcpus*/ |
c6c9fcdf | 1177 | itc_offset = 0UL - kvm_get_itc(vcpu); |
3032b925 | 1178 | for (i = 0; i < KVM_MAX_VCPUS; i++) { |
a917f7af XZ |
1179 | v = (struct kvm_vcpu *)((char *)vcpu + |
1180 | sizeof(struct kvm_vcpu_data) * i); | |
b024b793 XZ |
1181 | v->arch.itc_offset = itc_offset; |
1182 | v->arch.last_itc = 0; | |
1183 | } | |
1184 | } else | |
a4535290 | 1185 | vcpu->arch.mp_state = KVM_MP_STATE_UNINITIALIZED; |
b024b793 XZ |
1186 | |
1187 | r = -ENOMEM; | |
1188 | vcpu->arch.apic = kzalloc(sizeof(struct kvm_lapic), GFP_KERNEL); | |
1189 | if (!vcpu->arch.apic) | |
1190 | goto out; | |
1191 | vcpu->arch.apic->vcpu = vcpu; | |
1192 | ||
1193 | p_ctx->gr[1] = 0; | |
a917f7af | 1194 | p_ctx->gr[12] = (unsigned long)((char *)vmm_vcpu + KVM_STK_OFFSET); |
b024b793 XZ |
1195 | p_ctx->gr[13] = (unsigned long)vmm_vcpu; |
1196 | p_ctx->psr = 0x1008522000UL; | |
1197 | p_ctx->ar[40] = FPSR_DEFAULT; /*fpsr*/ | |
1198 | p_ctx->caller_unat = 0; | |
1199 | p_ctx->pr = 0x0; | |
1200 | p_ctx->ar[36] = 0x0; /*unat*/ | |
1201 | p_ctx->ar[19] = 0x0; /*rnat*/ | |
1202 | p_ctx->ar[18] = (unsigned long)vmm_vcpu + | |
1203 | ((sizeof(struct kvm_vcpu)+15) & ~15); | |
1204 | p_ctx->ar[64] = 0x0; /*pfs*/ | |
1205 | p_ctx->cr[0] = 0x7e04UL; | |
1206 | p_ctx->cr[2] = (unsigned long)kvm_vmm_info->vmm_ivt; | |
1207 | p_ctx->cr[8] = 0x3c; | |
1208 | ||
421f91d2 | 1209 | /*Initialize region register*/ |
b024b793 XZ |
1210 | p_ctx->rr[0] = 0x30; |
1211 | p_ctx->rr[1] = 0x30; | |
1212 | p_ctx->rr[2] = 0x30; | |
1213 | p_ctx->rr[3] = 0x30; | |
1214 | p_ctx->rr[4] = 0x30; | |
1215 | p_ctx->rr[5] = 0x30; | |
1216 | p_ctx->rr[7] = 0x30; | |
1217 | ||
421f91d2 | 1218 | /*Initialize branch register 0*/ |
b024b793 XZ |
1219 | p_ctx->br[0] = *(unsigned long *)kvm_vmm_info->vmm_entry; |
1220 | ||
1221 | vcpu->arch.vmm_rr = kvm->arch.vmm_init_rr; | |
1222 | vcpu->arch.metaphysical_rr0 = kvm->arch.metaphysical_rr0; | |
1223 | vcpu->arch.metaphysical_rr4 = kvm->arch.metaphysical_rr4; | |
1224 | ||
1225 | hrtimer_init(&vcpu->arch.hlt_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); | |
1226 | vcpu->arch.hlt_timer.function = hlt_timer_fn; | |
1227 | ||
1228 | vcpu->arch.last_run_cpu = -1; | |
a917f7af | 1229 | vcpu->arch.vpd = (struct vpd *)VPD_BASE(vcpu->vcpu_id); |
b024b793 XZ |
1230 | vcpu->arch.vsa_base = kvm_vsa_base; |
1231 | vcpu->arch.__gp = kvm_vmm_gp; | |
1232 | vcpu->arch.dirty_log_lock_pa = __pa(&kvm->arch.dirty_log_lock); | |
a917f7af XZ |
1233 | vcpu->arch.vhpt.hash = (struct thash_data *)VHPT_BASE(vcpu->vcpu_id); |
1234 | vcpu->arch.vtlb.hash = (struct thash_data *)VTLB_BASE(vcpu->vcpu_id); | |
b024b793 XZ |
1235 | init_ptce_info(vcpu); |
1236 | ||
1237 | r = 0; | |
1238 | out: | |
1239 | return r; | |
1240 | } | |
1241 | ||
1242 | static int vti_vcpu_setup(struct kvm_vcpu *vcpu, int id) | |
1243 | { | |
1244 | unsigned long psr; | |
1245 | int r; | |
1246 | ||
1247 | local_irq_save(psr); | |
1248 | r = kvm_insert_vmm_mapping(vcpu); | |
457459c3 | 1249 | local_irq_restore(psr); |
b024b793 XZ |
1250 | if (r) |
1251 | goto fail; | |
1252 | r = kvm_vcpu_init(vcpu, vcpu->kvm, id); | |
1253 | if (r) | |
1254 | goto fail; | |
1255 | ||
1256 | r = vti_init_vpd(vcpu); | |
1257 | if (r) { | |
1258 | printk(KERN_DEBUG"kvm: vpd init error!!\n"); | |
1259 | goto uninit; | |
1260 | } | |
1261 | ||
1262 | r = vti_create_vp(vcpu); | |
1263 | if (r) | |
1264 | goto uninit; | |
1265 | ||
1266 | kvm_purge_vmm_mapping(vcpu); | |
b024b793 XZ |
1267 | |
1268 | return 0; | |
1269 | uninit: | |
1270 | kvm_vcpu_uninit(vcpu); | |
1271 | fail: | |
1272 | return r; | |
1273 | } | |
1274 | ||
1275 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, | |
1276 | unsigned int id) | |
1277 | { | |
1278 | struct kvm_vcpu *vcpu; | |
1279 | unsigned long vm_base = kvm->arch.vm_base; | |
1280 | int r; | |
1281 | int cpu; | |
1282 | ||
a917f7af XZ |
1283 | BUG_ON(sizeof(struct kvm_vcpu) > VCPU_STRUCT_SIZE/2); |
1284 | ||
1285 | r = -EINVAL; | |
1286 | if (id >= KVM_MAX_VCPUS) { | |
1287 | printk(KERN_ERR"kvm: Can't configure vcpus > %ld", | |
1288 | KVM_MAX_VCPUS); | |
1289 | goto fail; | |
1290 | } | |
1291 | ||
b024b793 XZ |
1292 | r = -ENOMEM; |
1293 | if (!vm_base) { | |
1294 | printk(KERN_ERR"kvm: Create vcpu[%d] error!\n", id); | |
1295 | goto fail; | |
1296 | } | |
a917f7af XZ |
1297 | vcpu = (struct kvm_vcpu *)(vm_base + offsetof(struct kvm_vm_data, |
1298 | vcpu_data[id].vcpu_struct)); | |
b024b793 XZ |
1299 | vcpu->kvm = kvm; |
1300 | ||
1301 | cpu = get_cpu(); | |
b024b793 XZ |
1302 | r = vti_vcpu_setup(vcpu, id); |
1303 | put_cpu(); | |
1304 | ||
1305 | if (r) { | |
1306 | printk(KERN_DEBUG"kvm: vcpu_setup error!!\n"); | |
1307 | goto fail; | |
1308 | } | |
1309 | ||
1310 | return vcpu; | |
1311 | fail: | |
1312 | return ERR_PTR(r); | |
1313 | } | |
1314 | ||
1315 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) | |
1316 | { | |
1317 | return 0; | |
1318 | } | |
1319 | ||
42897d86 MT |
1320 | int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) |
1321 | { | |
1322 | return 0; | |
1323 | } | |
1324 | ||
b024b793 XZ |
1325 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) |
1326 | { | |
1327 | return -EINVAL; | |
1328 | } | |
1329 | ||
1330 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) | |
1331 | { | |
1332 | return -EINVAL; | |
1333 | } | |
1334 | ||
d0bfb940 JK |
1335 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
1336 | struct kvm_guest_debug *dbg) | |
b024b793 XZ |
1337 | { |
1338 | return -EINVAL; | |
1339 | } | |
1340 | ||
d89f5eff | 1341 | void kvm_arch_free_vm(struct kvm *kvm) |
b024b793 XZ |
1342 | { |
1343 | unsigned long vm_base = kvm->arch.vm_base; | |
1344 | ||
1345 | if (vm_base) { | |
1346 | memset((void *)vm_base, 0, KVM_VM_DATA_SIZE); | |
1347 | free_pages(vm_base, get_order(KVM_VM_DATA_SIZE)); | |
1348 | } | |
1349 | ||
1350 | } | |
1351 | ||
1352 | static void kvm_release_vm_pages(struct kvm *kvm) | |
1353 | { | |
46a26bf5 | 1354 | struct kvm_memslots *slots; |
b024b793 | 1355 | struct kvm_memory_slot *memslot; |
be6ba0f0 | 1356 | int j; |
b024b793 | 1357 | |
90d83dc3 | 1358 | slots = kvm_memslots(kvm); |
be6ba0f0 | 1359 | kvm_for_each_memslot(memslot, slots) { |
b024b793 XZ |
1360 | for (j = 0; j < memslot->npages; j++) { |
1361 | if (memslot->rmap[j]) | |
1362 | put_page((struct page *)memslot->rmap[j]); | |
1363 | } | |
1364 | } | |
1365 | } | |
1366 | ||
ad8ba2cd SY |
1367 | void kvm_arch_sync_events(struct kvm *kvm) |
1368 | { | |
1369 | } | |
1370 | ||
b024b793 XZ |
1371 | void kvm_arch_destroy_vm(struct kvm *kvm) |
1372 | { | |
2381ad24 | 1373 | kvm_iommu_unmap_guest(kvm); |
2381ad24 | 1374 | kvm_free_all_assigned_devices(kvm); |
b024b793 XZ |
1375 | kfree(kvm->arch.vioapic); |
1376 | kvm_release_vm_pages(kvm); | |
b024b793 XZ |
1377 | } |
1378 | ||
1379 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
1380 | { | |
1381 | } | |
1382 | ||
1383 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
1384 | { | |
1385 | if (cpu != vcpu->cpu) { | |
1386 | vcpu->cpu = cpu; | |
1387 | if (vcpu->arch.ht_active) | |
1388 | kvm_migrate_hlt_timer(vcpu); | |
1389 | } | |
1390 | } | |
1391 | ||
1392 | #define SAVE_REGS(_x) regs->_x = vcpu->arch._x | |
1393 | ||
1394 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) | |
1395 | { | |
b024b793 | 1396 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); |
042b26ed JS |
1397 | int i; |
1398 | ||
b024b793 XZ |
1399 | vcpu_load(vcpu); |
1400 | ||
1401 | for (i = 0; i < 16; i++) { | |
1402 | regs->vpd.vgr[i] = vpd->vgr[i]; | |
1403 | regs->vpd.vbgr[i] = vpd->vbgr[i]; | |
1404 | } | |
1405 | for (i = 0; i < 128; i++) | |
1406 | regs->vpd.vcr[i] = vpd->vcr[i]; | |
1407 | regs->vpd.vhpi = vpd->vhpi; | |
1408 | regs->vpd.vnat = vpd->vnat; | |
1409 | regs->vpd.vbnat = vpd->vbnat; | |
1410 | regs->vpd.vpsr = vpd->vpsr; | |
1411 | regs->vpd.vpr = vpd->vpr; | |
1412 | ||
042b26ed JS |
1413 | memcpy(®s->saved_guest, &vcpu->arch.guest, sizeof(union context)); |
1414 | ||
b024b793 XZ |
1415 | SAVE_REGS(mp_state); |
1416 | SAVE_REGS(vmm_rr); | |
1417 | memcpy(regs->itrs, vcpu->arch.itrs, sizeof(struct thash_data) * NITRS); | |
1418 | memcpy(regs->dtrs, vcpu->arch.dtrs, sizeof(struct thash_data) * NDTRS); | |
1419 | SAVE_REGS(itr_regions); | |
1420 | SAVE_REGS(dtr_regions); | |
1421 | SAVE_REGS(tc_regions); | |
1422 | SAVE_REGS(irq_check); | |
1423 | SAVE_REGS(itc_check); | |
1424 | SAVE_REGS(timer_check); | |
1425 | SAVE_REGS(timer_pending); | |
1426 | SAVE_REGS(last_itc); | |
1427 | for (i = 0; i < 8; i++) { | |
1428 | regs->vrr[i] = vcpu->arch.vrr[i]; | |
1429 | regs->ibr[i] = vcpu->arch.ibr[i]; | |
1430 | regs->dbr[i] = vcpu->arch.dbr[i]; | |
1431 | } | |
1432 | for (i = 0; i < 4; i++) | |
1433 | regs->insvc[i] = vcpu->arch.insvc[i]; | |
c6c9fcdf | 1434 | regs->saved_itc = vcpu->arch.itc_offset + kvm_get_itc(vcpu); |
b024b793 XZ |
1435 | SAVE_REGS(xtp); |
1436 | SAVE_REGS(metaphysical_rr0); | |
1437 | SAVE_REGS(metaphysical_rr4); | |
1438 | SAVE_REGS(metaphysical_saved_rr0); | |
1439 | SAVE_REGS(metaphysical_saved_rr4); | |
1440 | SAVE_REGS(fp_psr); | |
1441 | SAVE_REGS(saved_gp); | |
042b26ed | 1442 | |
b024b793 | 1443 | vcpu_put(vcpu); |
042b26ed | 1444 | return 0; |
b024b793 XZ |
1445 | } |
1446 | ||
e9a999fe JS |
1447 | int kvm_arch_vcpu_ioctl_get_stack(struct kvm_vcpu *vcpu, |
1448 | struct kvm_ia64_vcpu_stack *stack) | |
1449 | { | |
1450 | memcpy(stack, vcpu, sizeof(struct kvm_ia64_vcpu_stack)); | |
1451 | return 0; | |
1452 | } | |
1453 | ||
1454 | int kvm_arch_vcpu_ioctl_set_stack(struct kvm_vcpu *vcpu, | |
1455 | struct kvm_ia64_vcpu_stack *stack) | |
1456 | { | |
1457 | memcpy(vcpu + 1, &stack->stack[0] + sizeof(struct kvm_vcpu), | |
1458 | sizeof(struct kvm_ia64_vcpu_stack) - sizeof(struct kvm_vcpu)); | |
1459 | ||
1460 | vcpu->arch.exit_data = ((struct kvm_vcpu *)stack)->arch.exit_data; | |
1461 | return 0; | |
1462 | } | |
1463 | ||
b024b793 XZ |
1464 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) |
1465 | { | |
1466 | ||
1467 | hrtimer_cancel(&vcpu->arch.hlt_timer); | |
1468 | kfree(vcpu->arch.apic); | |
1469 | } | |
1470 | ||
1471 | ||
1472 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
e9a999fe | 1473 | unsigned int ioctl, unsigned long arg) |
b024b793 | 1474 | { |
e9a999fe JS |
1475 | struct kvm_vcpu *vcpu = filp->private_data; |
1476 | void __user *argp = (void __user *)arg; | |
1477 | struct kvm_ia64_vcpu_stack *stack = NULL; | |
1478 | long r; | |
1479 | ||
1480 | switch (ioctl) { | |
1481 | case KVM_IA64_VCPU_GET_STACK: { | |
1482 | struct kvm_ia64_vcpu_stack __user *user_stack; | |
1483 | void __user *first_p = argp; | |
1484 | ||
1485 | r = -EFAULT; | |
1486 | if (copy_from_user(&user_stack, first_p, sizeof(void *))) | |
1487 | goto out; | |
1488 | ||
1489 | if (!access_ok(VERIFY_WRITE, user_stack, | |
1490 | sizeof(struct kvm_ia64_vcpu_stack))) { | |
1491 | printk(KERN_INFO "KVM_IA64_VCPU_GET_STACK: " | |
1492 | "Illegal user destination address for stack\n"); | |
1493 | goto out; | |
1494 | } | |
1495 | stack = kzalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL); | |
1496 | if (!stack) { | |
1497 | r = -ENOMEM; | |
1498 | goto out; | |
1499 | } | |
1500 | ||
1501 | r = kvm_arch_vcpu_ioctl_get_stack(vcpu, stack); | |
1502 | if (r) | |
1503 | goto out; | |
1504 | ||
1505 | if (copy_to_user(user_stack, stack, | |
5c0d0920 WY |
1506 | sizeof(struct kvm_ia64_vcpu_stack))) { |
1507 | r = -EFAULT; | |
e9a999fe | 1508 | goto out; |
5c0d0920 | 1509 | } |
e9a999fe JS |
1510 | |
1511 | break; | |
1512 | } | |
1513 | case KVM_IA64_VCPU_SET_STACK: { | |
1514 | struct kvm_ia64_vcpu_stack __user *user_stack; | |
1515 | void __user *first_p = argp; | |
1516 | ||
1517 | r = -EFAULT; | |
1518 | if (copy_from_user(&user_stack, first_p, sizeof(void *))) | |
1519 | goto out; | |
1520 | ||
1521 | if (!access_ok(VERIFY_READ, user_stack, | |
1522 | sizeof(struct kvm_ia64_vcpu_stack))) { | |
1523 | printk(KERN_INFO "KVM_IA64_VCPU_SET_STACK: " | |
1524 | "Illegal user address for stack\n"); | |
1525 | goto out; | |
1526 | } | |
1527 | stack = kmalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL); | |
1528 | if (!stack) { | |
1529 | r = -ENOMEM; | |
1530 | goto out; | |
1531 | } | |
1532 | if (copy_from_user(stack, user_stack, | |
1533 | sizeof(struct kvm_ia64_vcpu_stack))) | |
1534 | goto out; | |
1535 | ||
1536 | r = kvm_arch_vcpu_ioctl_set_stack(vcpu, stack); | |
1537 | break; | |
1538 | } | |
1539 | ||
1540 | default: | |
1541 | r = -EINVAL; | |
1542 | } | |
1543 | ||
1544 | out: | |
1545 | kfree(stack); | |
1546 | return r; | |
b024b793 XZ |
1547 | } |
1548 | ||
5b1c1493 CO |
1549 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
1550 | { | |
1551 | return VM_FAULT_SIGBUS; | |
1552 | } | |
1553 | ||
5587027c | 1554 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
db3fe4eb TY |
1555 | struct kvm_memory_slot *dont) |
1556 | { | |
1557 | } | |
1558 | ||
5587027c AK |
1559 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
1560 | unsigned long npages) | |
db3fe4eb TY |
1561 | { |
1562 | return 0; | |
1563 | } | |
1564 | ||
e59dbe09 TY |
1565 | void kvm_arch_memslots_updated(struct kvm *kvm) |
1566 | { | |
1567 | } | |
1568 | ||
f7784b8e MT |
1569 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
1570 | struct kvm_memory_slot *memslot, | |
7b6195a9 TY |
1571 | struct kvm_userspace_memory_region *mem, |
1572 | enum kvm_mr_change change) | |
b024b793 XZ |
1573 | { |
1574 | unsigned long i; | |
1cbea809 | 1575 | unsigned long pfn; |
f7784b8e | 1576 | int npages = memslot->npages; |
b024b793 XZ |
1577 | unsigned long base_gfn = memslot->base_gfn; |
1578 | ||
a917f7af XZ |
1579 | if (base_gfn + npages > (KVM_MAX_MEM_SIZE >> PAGE_SHIFT)) |
1580 | return -ENOMEM; | |
1581 | ||
b024b793 | 1582 | for (i = 0; i < npages; i++) { |
1cbea809 XZ |
1583 | pfn = gfn_to_pfn(kvm, base_gfn + i); |
1584 | if (!kvm_is_mmio_pfn(pfn)) { | |
1585 | kvm_set_pmt_entry(kvm, base_gfn + i, | |
1586 | pfn << PAGE_SHIFT, | |
b010eb51 | 1587 | _PAGE_AR_RWX | _PAGE_MA_WB); |
1cbea809 XZ |
1588 | memslot->rmap[i] = (unsigned long)pfn_to_page(pfn); |
1589 | } else { | |
1590 | kvm_set_pmt_entry(kvm, base_gfn + i, | |
b010eb51 | 1591 | GPFN_PHYS_MMIO | (pfn << PAGE_SHIFT), |
1cbea809 XZ |
1592 | _PAGE_MA_UC); |
1593 | memslot->rmap[i] = 0; | |
1594 | } | |
b024b793 XZ |
1595 | } |
1596 | ||
1597 | return 0; | |
1598 | } | |
1599 | ||
f7784b8e MT |
1600 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
1601 | struct kvm_userspace_memory_region *mem, | |
8482644a TY |
1602 | const struct kvm_memory_slot *old, |
1603 | enum kvm_mr_change change) | |
f7784b8e MT |
1604 | { |
1605 | return; | |
1606 | } | |
1607 | ||
2df72e9b | 1608 | void kvm_arch_flush_shadow_all(struct kvm *kvm) |
34d4cb8f | 1609 | { |
64f6afbd | 1610 | kvm_flush_remote_tlbs(kvm); |
34d4cb8f | 1611 | } |
b024b793 | 1612 | |
2df72e9b MT |
1613 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, |
1614 | struct kvm_memory_slot *slot) | |
1615 | { | |
1616 | kvm_arch_flush_shadow_all(); | |
1617 | } | |
1618 | ||
b024b793 | 1619 | long kvm_arch_dev_ioctl(struct file *filp, |
e9a999fe | 1620 | unsigned int ioctl, unsigned long arg) |
b024b793 XZ |
1621 | { |
1622 | return -EINVAL; | |
1623 | } | |
1624 | ||
1625 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
1626 | { | |
1627 | kvm_vcpu_uninit(vcpu); | |
1628 | } | |
1629 | ||
1630 | static int vti_cpu_has_kvm_support(void) | |
1631 | { | |
1632 | long avail = 1, status = 1, control = 1; | |
1633 | long ret; | |
1634 | ||
1635 | ret = ia64_pal_proc_get_features(&avail, &status, &control, 0); | |
1636 | if (ret) | |
1637 | goto out; | |
1638 | ||
1639 | if (!(avail & PAL_PROC_VM_BIT)) | |
1640 | goto out; | |
1641 | ||
1642 | printk(KERN_DEBUG"kvm: Hardware Supports VT\n"); | |
1643 | ||
1644 | ret = ia64_pal_vp_env_info(&kvm_vm_buffer_size, &vp_env_info); | |
1645 | if (ret) | |
1646 | goto out; | |
1647 | printk(KERN_DEBUG"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size); | |
1648 | ||
1649 | if (!(vp_env_info & VP_OPCODE)) { | |
1650 | printk(KERN_WARNING"kvm: No opcode ability on hardware, " | |
1651 | "vm_env_info:0x%lx\n", vp_env_info); | |
1652 | } | |
1653 | ||
1654 | return 1; | |
1655 | out: | |
1656 | return 0; | |
1657 | } | |
1658 | ||
0b5d7a2c JS |
1659 | |
1660 | /* | |
1661 | * On SN2, the ITC isn't stable, so copy in fast path code to use the | |
1662 | * SN2 RTC, replacing the ITC based default verion. | |
1663 | */ | |
1664 | static void kvm_patch_vmm(struct kvm_vmm_info *vmm_info, | |
1665 | struct module *module) | |
1666 | { | |
1667 | unsigned long new_ar, new_ar_sn2; | |
1668 | unsigned long module_base; | |
1669 | ||
1670 | if (!ia64_platform_is("sn2")) | |
1671 | return; | |
1672 | ||
1673 | module_base = (unsigned long)module->module_core; | |
1674 | ||
1675 | new_ar = kvm_vmm_base + vmm_info->patch_mov_ar - module_base; | |
1676 | new_ar_sn2 = kvm_vmm_base + vmm_info->patch_mov_ar_sn2 - module_base; | |
1677 | ||
1678 | printk(KERN_INFO "kvm: Patching ITC emulation to use SGI SN2 RTC " | |
1679 | "as source\n"); | |
1680 | ||
1681 | /* | |
1682 | * Copy the SN2 version of mov_ar into place. They are both | |
1683 | * the same size, so 6 bundles is sufficient (6 * 0x10). | |
1684 | */ | |
1685 | memcpy((void *)new_ar, (void *)new_ar_sn2, 0x60); | |
1686 | } | |
1687 | ||
b024b793 | 1688 | static int kvm_relocate_vmm(struct kvm_vmm_info *vmm_info, |
0b5d7a2c | 1689 | struct module *module) |
b024b793 XZ |
1690 | { |
1691 | unsigned long module_base; | |
1692 | unsigned long vmm_size; | |
1693 | ||
1694 | unsigned long vmm_offset, func_offset, fdesc_offset; | |
1695 | struct fdesc *p_fdesc; | |
1696 | ||
1697 | BUG_ON(!module); | |
1698 | ||
1699 | if (!kvm_vmm_base) { | |
421f91d2 | 1700 | printk("kvm: kvm area hasn't been initialized yet!!\n"); |
b024b793 XZ |
1701 | return -EFAULT; |
1702 | } | |
1703 | ||
1704 | /*Calculate new position of relocated vmm module.*/ | |
1705 | module_base = (unsigned long)module->module_core; | |
1706 | vmm_size = module->core_size; | |
1707 | if (unlikely(vmm_size > KVM_VMM_SIZE)) | |
1708 | return -EFAULT; | |
1709 | ||
1710 | memcpy((void *)kvm_vmm_base, (void *)module_base, vmm_size); | |
0b5d7a2c | 1711 | kvm_patch_vmm(vmm_info, module); |
b024b793 XZ |
1712 | kvm_flush_icache(kvm_vmm_base, vmm_size); |
1713 | ||
1714 | /*Recalculate kvm_vmm_info based on new VMM*/ | |
1715 | vmm_offset = vmm_info->vmm_ivt - module_base; | |
1716 | kvm_vmm_info->vmm_ivt = KVM_VMM_BASE + vmm_offset; | |
1717 | printk(KERN_DEBUG"kvm: Relocated VMM's IVT Base Addr:%lx\n", | |
1718 | kvm_vmm_info->vmm_ivt); | |
1719 | ||
1720 | fdesc_offset = (unsigned long)vmm_info->vmm_entry - module_base; | |
1721 | kvm_vmm_info->vmm_entry = (kvm_vmm_entry *)(KVM_VMM_BASE + | |
1722 | fdesc_offset); | |
1723 | func_offset = *(unsigned long *)vmm_info->vmm_entry - module_base; | |
1724 | p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset); | |
1725 | p_fdesc->ip = KVM_VMM_BASE + func_offset; | |
1726 | p_fdesc->gp = KVM_VMM_BASE+(p_fdesc->gp - module_base); | |
1727 | ||
1728 | printk(KERN_DEBUG"kvm: Relocated VMM's Init Entry Addr:%lx\n", | |
1729 | KVM_VMM_BASE+func_offset); | |
1730 | ||
1731 | fdesc_offset = (unsigned long)vmm_info->tramp_entry - module_base; | |
1732 | kvm_vmm_info->tramp_entry = (kvm_tramp_entry *)(KVM_VMM_BASE + | |
1733 | fdesc_offset); | |
1734 | func_offset = *(unsigned long *)vmm_info->tramp_entry - module_base; | |
1735 | p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset); | |
1736 | p_fdesc->ip = KVM_VMM_BASE + func_offset; | |
1737 | p_fdesc->gp = KVM_VMM_BASE + (p_fdesc->gp - module_base); | |
1738 | ||
1739 | kvm_vmm_gp = p_fdesc->gp; | |
1740 | ||
1741 | printk(KERN_DEBUG"kvm: Relocated VMM's Entry IP:%p\n", | |
1742 | kvm_vmm_info->vmm_entry); | |
1743 | printk(KERN_DEBUG"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n", | |
1744 | KVM_VMM_BASE + func_offset); | |
1745 | ||
1746 | return 0; | |
1747 | } | |
1748 | ||
1749 | int kvm_arch_init(void *opaque) | |
1750 | { | |
1751 | int r; | |
1752 | struct kvm_vmm_info *vmm_info = (struct kvm_vmm_info *)opaque; | |
1753 | ||
1754 | if (!vti_cpu_has_kvm_support()) { | |
1755 | printk(KERN_ERR "kvm: No Hardware Virtualization Support!\n"); | |
1756 | r = -EOPNOTSUPP; | |
1757 | goto out; | |
1758 | } | |
1759 | ||
1760 | if (kvm_vmm_info) { | |
1761 | printk(KERN_ERR "kvm: Already loaded VMM module!\n"); | |
1762 | r = -EEXIST; | |
1763 | goto out; | |
1764 | } | |
1765 | ||
1766 | r = -ENOMEM; | |
1767 | kvm_vmm_info = kzalloc(sizeof(struct kvm_vmm_info), GFP_KERNEL); | |
1768 | if (!kvm_vmm_info) | |
1769 | goto out; | |
1770 | ||
1771 | if (kvm_alloc_vmm_area()) | |
1772 | goto out_free0; | |
1773 | ||
1774 | r = kvm_relocate_vmm(vmm_info, vmm_info->module); | |
1775 | if (r) | |
1776 | goto out_free1; | |
1777 | ||
1778 | return 0; | |
1779 | ||
1780 | out_free1: | |
1781 | kvm_free_vmm_area(); | |
1782 | out_free0: | |
1783 | kfree(kvm_vmm_info); | |
1784 | out: | |
1785 | return r; | |
1786 | } | |
1787 | ||
1788 | void kvm_arch_exit(void) | |
1789 | { | |
1790 | kvm_free_vmm_area(); | |
1791 | kfree(kvm_vmm_info); | |
1792 | kvm_vmm_info = NULL; | |
1793 | } | |
1794 | ||
979586e0 TY |
1795 | static void kvm_ia64_sync_dirty_log(struct kvm *kvm, |
1796 | struct kvm_memory_slot *memslot) | |
b024b793 | 1797 | { |
979586e0 | 1798 | int i; |
87bf6e7d TY |
1799 | long base; |
1800 | unsigned long n; | |
a917f7af XZ |
1801 | unsigned long *dirty_bitmap = (unsigned long *)(kvm->arch.vm_base + |
1802 | offsetof(struct kvm_vm_data, kvm_mem_dirty_log)); | |
b024b793 | 1803 | |
87bf6e7d | 1804 | n = kvm_dirty_bitmap_bytes(memslot); |
b024b793 XZ |
1805 | base = memslot->base_gfn / BITS_PER_LONG; |
1806 | ||
4482b06c | 1807 | spin_lock(&kvm->arch.dirty_log_lock); |
b024b793 XZ |
1808 | for (i = 0; i < n/sizeof(long); ++i) { |
1809 | memslot->dirty_bitmap[i] = dirty_bitmap[base + i]; | |
1810 | dirty_bitmap[base + i] = 0; | |
1811 | } | |
4482b06c | 1812 | spin_unlock(&kvm->arch.dirty_log_lock); |
b024b793 XZ |
1813 | } |
1814 | ||
1815 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
1816 | struct kvm_dirty_log *log) | |
1817 | { | |
1818 | int r; | |
87bf6e7d | 1819 | unsigned long n; |
b024b793 XZ |
1820 | struct kvm_memory_slot *memslot; |
1821 | int is_dirty = 0; | |
1822 | ||
79fac95e | 1823 | mutex_lock(&kvm->slots_lock); |
b024b793 | 1824 | |
979586e0 | 1825 | r = -EINVAL; |
bbacc0c1 | 1826 | if (log->slot >= KVM_USER_MEM_SLOTS) |
979586e0 TY |
1827 | goto out; |
1828 | ||
28a37544 | 1829 | memslot = id_to_memslot(kvm->memslots, log->slot); |
979586e0 TY |
1830 | r = -ENOENT; |
1831 | if (!memslot->dirty_bitmap) | |
b024b793 XZ |
1832 | goto out; |
1833 | ||
979586e0 | 1834 | kvm_ia64_sync_dirty_log(kvm, memslot); |
b024b793 XZ |
1835 | r = kvm_get_dirty_log(kvm, log, &is_dirty); |
1836 | if (r) | |
1837 | goto out; | |
1838 | ||
1839 | /* If nothing is dirty, don't bother messing with page tables. */ | |
1840 | if (is_dirty) { | |
1841 | kvm_flush_remote_tlbs(kvm); | |
87bf6e7d | 1842 | n = kvm_dirty_bitmap_bytes(memslot); |
b024b793 XZ |
1843 | memset(memslot->dirty_bitmap, 0, n); |
1844 | } | |
1845 | r = 0; | |
1846 | out: | |
79fac95e | 1847 | mutex_unlock(&kvm->slots_lock); |
b024b793 XZ |
1848 | return r; |
1849 | } | |
1850 | ||
1851 | int kvm_arch_hardware_setup(void) | |
1852 | { | |
1853 | return 0; | |
1854 | } | |
1855 | ||
1856 | void kvm_arch_hardware_unsetup(void) | |
1857 | { | |
1858 | } | |
1859 | ||
58c2dde1 | 1860 | int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq) |
b024b793 | 1861 | { |
58c2dde1 | 1862 | return __apic_accept_irq(vcpu, irq->vector); |
b024b793 XZ |
1863 | } |
1864 | ||
1865 | int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest) | |
1866 | { | |
1867 | return apic->vcpu->vcpu_id == dest; | |
1868 | } | |
1869 | ||
1870 | int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda) | |
1871 | { | |
1872 | return 0; | |
1873 | } | |
1874 | ||
e1035715 | 1875 | int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2) |
b024b793 | 1876 | { |
e1035715 | 1877 | return vcpu1->arch.xtp - vcpu2->arch.xtp; |
b024b793 XZ |
1878 | } |
1879 | ||
343f94fe GN |
1880 | int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source, |
1881 | int short_hand, int dest, int dest_mode) | |
1882 | { | |
58c2dde1 | 1883 | struct kvm_lapic *target = vcpu->arch.apic; |
343f94fe GN |
1884 | return (dest_mode == 0) ? |
1885 | kvm_apic_match_physical_addr(target, dest) : | |
1886 | kvm_apic_match_logical_addr(target, dest); | |
1887 | } | |
1888 | ||
b024b793 XZ |
1889 | static int find_highest_bits(int *dat) |
1890 | { | |
1891 | u32 bits, bitnum; | |
1892 | int i; | |
1893 | ||
1894 | /* loop for all 256 bits */ | |
1895 | for (i = 7; i >= 0 ; i--) { | |
1896 | bits = dat[i]; | |
1897 | if (bits) { | |
1898 | bitnum = fls(bits); | |
1899 | return i * 32 + bitnum - 1; | |
1900 | } | |
1901 | } | |
1902 | ||
1903 | return -1; | |
1904 | } | |
1905 | ||
1906 | int kvm_highest_pending_irq(struct kvm_vcpu *vcpu) | |
1907 | { | |
1908 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); | |
1909 | ||
1910 | if (vpd->irr[0] & (1UL << NMI_VECTOR)) | |
1911 | return NMI_VECTOR; | |
1912 | if (vpd->irr[0] & (1UL << ExtINT_VECTOR)) | |
1913 | return ExtINT_VECTOR; | |
1914 | ||
1915 | return find_highest_bits((int *)&vpd->irr[0]); | |
1916 | } | |
1917 | ||
3d80840d MT |
1918 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) |
1919 | { | |
decc9016 | 1920 | return vcpu->arch.timer_fired; |
3d80840d MT |
1921 | } |
1922 | ||
b024b793 XZ |
1923 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu) |
1924 | { | |
a1b37100 GN |
1925 | return (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE) || |
1926 | (kvm_highest_pending_irq(vcpu) != -1); | |
b024b793 | 1927 | } |
62d9f0db | 1928 | |
b6d33834 CD |
1929 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu) |
1930 | { | |
1931 | return (!test_and_set_bit(KVM_REQ_KICK, &vcpu->requests)); | |
1932 | } | |
1933 | ||
62d9f0db MT |
1934 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
1935 | struct kvm_mp_state *mp_state) | |
1936 | { | |
8c4b537d | 1937 | mp_state->mp_state = vcpu->arch.mp_state; |
8c4b537d XZ |
1938 | return 0; |
1939 | } | |
1940 | ||
1941 | static int vcpu_reset(struct kvm_vcpu *vcpu) | |
1942 | { | |
1943 | int r; | |
1944 | long psr; | |
1945 | local_irq_save(psr); | |
1946 | r = kvm_insert_vmm_mapping(vcpu); | |
43890ae8 | 1947 | local_irq_restore(psr); |
8c4b537d XZ |
1948 | if (r) |
1949 | goto fail; | |
1950 | ||
1951 | vcpu->arch.launched = 0; | |
1952 | kvm_arch_vcpu_uninit(vcpu); | |
1953 | r = kvm_arch_vcpu_init(vcpu); | |
1954 | if (r) | |
1955 | goto fail; | |
1956 | ||
1957 | kvm_purge_vmm_mapping(vcpu); | |
1958 | r = 0; | |
1959 | fail: | |
8c4b537d | 1960 | return r; |
62d9f0db MT |
1961 | } |
1962 | ||
1963 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
1964 | struct kvm_mp_state *mp_state) | |
1965 | { | |
8c4b537d XZ |
1966 | int r = 0; |
1967 | ||
8c4b537d XZ |
1968 | vcpu->arch.mp_state = mp_state->mp_state; |
1969 | if (vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED) | |
1970 | r = vcpu_reset(vcpu); | |
8c4b537d | 1971 | return r; |
62d9f0db | 1972 | } |