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1 | /* | |
2 | * QEMU KVM support | |
3 | * | |
4 | * Copyright IBM, Corp. 2008 | |
5 | * | |
6 | * Authors: | |
7 | * Anthony Liguori <aliguori@us.ibm.com> | |
8 | * | |
9 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
10 | * See the COPYING file in the top-level directory. | |
11 | * | |
12 | */ | |
13 | ||
14 | #ifndef QEMU_KVM_H | |
15 | #define QEMU_KVM_H | |
16 | ||
17 | #include "qemu/queue.h" | |
18 | #include "hw/core/cpu.h" | |
19 | #include "exec/memattrs.h" | |
20 | #include "qemu/accel.h" | |
21 | #include "qom/object.h" | |
22 | ||
23 | #ifdef NEED_CPU_H | |
24 | # ifdef CONFIG_KVM | |
25 | # include <linux/kvm.h> | |
26 | # define CONFIG_KVM_IS_POSSIBLE | |
27 | # endif | |
28 | #else | |
29 | # define CONFIG_KVM_IS_POSSIBLE | |
30 | #endif | |
31 | ||
32 | #ifdef CONFIG_KVM_IS_POSSIBLE | |
33 | ||
34 | extern bool kvm_allowed; | |
35 | extern bool kvm_kernel_irqchip; | |
36 | extern bool kvm_split_irqchip; | |
37 | extern bool kvm_async_interrupts_allowed; | |
38 | extern bool kvm_halt_in_kernel_allowed; | |
39 | extern bool kvm_eventfds_allowed; | |
40 | extern bool kvm_irqfds_allowed; | |
41 | extern bool kvm_resamplefds_allowed; | |
42 | extern bool kvm_msi_via_irqfd_allowed; | |
43 | extern bool kvm_gsi_routing_allowed; | |
44 | extern bool kvm_gsi_direct_mapping; | |
45 | extern bool kvm_readonly_mem_allowed; | |
46 | extern bool kvm_direct_msi_allowed; | |
47 | extern bool kvm_ioeventfd_any_length_allowed; | |
48 | extern bool kvm_msi_use_devid; | |
49 | ||
50 | #define kvm_enabled() (kvm_allowed) | |
51 | /** | |
52 | * kvm_irqchip_in_kernel: | |
53 | * | |
54 | * Returns: true if an in-kernel irqchip was created. | |
55 | * What this actually means is architecture and machine model | |
56 | * specific: on PC, for instance, it means that the LAPIC | |
57 | * is in kernel. This function should never be used from generic | |
58 | * target-independent code: use one of the following functions or | |
59 | * some other specific check instead. | |
60 | */ | |
61 | #define kvm_irqchip_in_kernel() (kvm_kernel_irqchip) | |
62 | ||
63 | /** | |
64 | * kvm_irqchip_is_split: | |
65 | * | |
66 | * Returns: true if the irqchip implementation is split between | |
67 | * user and kernel space. The details are architecture and | |
68 | * machine specific. On PC, it means that the PIC, IOAPIC, and | |
69 | * PIT are in user space while the LAPIC is in the kernel. | |
70 | */ | |
71 | #define kvm_irqchip_is_split() (kvm_split_irqchip) | |
72 | ||
73 | /** | |
74 | * kvm_async_interrupts_enabled: | |
75 | * | |
76 | * Returns: true if we can deliver interrupts to KVM | |
77 | * asynchronously (ie by ioctl from any thread at any time) | |
78 | * rather than having to do interrupt delivery synchronously | |
79 | * (where the vcpu must be stopped at a suitable point first). | |
80 | */ | |
81 | #define kvm_async_interrupts_enabled() (kvm_async_interrupts_allowed) | |
82 | ||
83 | /** | |
84 | * kvm_halt_in_kernel | |
85 | * | |
86 | * Returns: true if halted cpus should still get a KVM_RUN ioctl to run | |
87 | * inside of kernel space. This only works if MP state is implemented. | |
88 | */ | |
89 | #define kvm_halt_in_kernel() (kvm_halt_in_kernel_allowed) | |
90 | ||
91 | /** | |
92 | * kvm_eventfds_enabled: | |
93 | * | |
94 | * Returns: true if we can use eventfds to receive notifications | |
95 | * from a KVM CPU (ie the kernel supports eventds and we are running | |
96 | * with a configuration where it is meaningful to use them). | |
97 | */ | |
98 | #define kvm_eventfds_enabled() (kvm_eventfds_allowed) | |
99 | ||
100 | /** | |
101 | * kvm_irqfds_enabled: | |
102 | * | |
103 | * Returns: true if we can use irqfds to inject interrupts into | |
104 | * a KVM CPU (ie the kernel supports irqfds and we are running | |
105 | * with a configuration where it is meaningful to use them). | |
106 | */ | |
107 | #define kvm_irqfds_enabled() (kvm_irqfds_allowed) | |
108 | ||
109 | /** | |
110 | * kvm_resamplefds_enabled: | |
111 | * | |
112 | * Returns: true if we can use resamplefds to inject interrupts into | |
113 | * a KVM CPU (ie the kernel supports resamplefds and we are running | |
114 | * with a configuration where it is meaningful to use them). | |
115 | */ | |
116 | #define kvm_resamplefds_enabled() (kvm_resamplefds_allowed) | |
117 | ||
118 | /** | |
119 | * kvm_msi_via_irqfd_enabled: | |
120 | * | |
121 | * Returns: true if we can route a PCI MSI (Message Signaled Interrupt) | |
122 | * to a KVM CPU via an irqfd. This requires that the kernel supports | |
123 | * this and that we're running in a configuration that permits it. | |
124 | */ | |
125 | #define kvm_msi_via_irqfd_enabled() (kvm_msi_via_irqfd_allowed) | |
126 | ||
127 | /** | |
128 | * kvm_gsi_routing_enabled: | |
129 | * | |
130 | * Returns: true if GSI routing is enabled (ie the kernel supports | |
131 | * it and we're running in a configuration that permits it). | |
132 | */ | |
133 | #define kvm_gsi_routing_enabled() (kvm_gsi_routing_allowed) | |
134 | ||
135 | /** | |
136 | * kvm_gsi_direct_mapping: | |
137 | * | |
138 | * Returns: true if GSI direct mapping is enabled. | |
139 | */ | |
140 | #define kvm_gsi_direct_mapping() (kvm_gsi_direct_mapping) | |
141 | ||
142 | /** | |
143 | * kvm_readonly_mem_enabled: | |
144 | * | |
145 | * Returns: true if KVM readonly memory is enabled (ie the kernel | |
146 | * supports it and we're running in a configuration that permits it). | |
147 | */ | |
148 | #define kvm_readonly_mem_enabled() (kvm_readonly_mem_allowed) | |
149 | ||
150 | /** | |
151 | * kvm_direct_msi_enabled: | |
152 | * | |
153 | * Returns: true if KVM allows direct MSI injection. | |
154 | */ | |
155 | #define kvm_direct_msi_enabled() (kvm_direct_msi_allowed) | |
156 | ||
157 | /** | |
158 | * kvm_ioeventfd_any_length_enabled: | |
159 | * Returns: true if KVM allows any length io eventfd. | |
160 | */ | |
161 | #define kvm_ioeventfd_any_length_enabled() (kvm_ioeventfd_any_length_allowed) | |
162 | ||
163 | /** | |
164 | * kvm_msi_devid_required: | |
165 | * Returns: true if KVM requires a device id to be provided while | |
166 | * defining an MSI routing entry. | |
167 | */ | |
168 | #define kvm_msi_devid_required() (kvm_msi_use_devid) | |
169 | ||
170 | #else | |
171 | ||
172 | #define kvm_enabled() (0) | |
173 | #define kvm_irqchip_in_kernel() (false) | |
174 | #define kvm_irqchip_is_split() (false) | |
175 | #define kvm_async_interrupts_enabled() (false) | |
176 | #define kvm_halt_in_kernel() (false) | |
177 | #define kvm_eventfds_enabled() (false) | |
178 | #define kvm_irqfds_enabled() (false) | |
179 | #define kvm_resamplefds_enabled() (false) | |
180 | #define kvm_msi_via_irqfd_enabled() (false) | |
181 | #define kvm_gsi_routing_allowed() (false) | |
182 | #define kvm_gsi_direct_mapping() (false) | |
183 | #define kvm_readonly_mem_enabled() (false) | |
184 | #define kvm_direct_msi_enabled() (false) | |
185 | #define kvm_ioeventfd_any_length_enabled() (false) | |
186 | #define kvm_msi_devid_required() (false) | |
187 | ||
188 | #endif /* CONFIG_KVM_IS_POSSIBLE */ | |
189 | ||
190 | struct kvm_run; | |
191 | struct kvm_lapic_state; | |
192 | struct kvm_irq_routing_entry; | |
193 | ||
194 | typedef struct KVMCapabilityInfo { | |
195 | const char *name; | |
196 | int value; | |
197 | } KVMCapabilityInfo; | |
198 | ||
199 | #define KVM_CAP_INFO(CAP) { "KVM_CAP_" stringify(CAP), KVM_CAP_##CAP } | |
200 | #define KVM_CAP_LAST_INFO { NULL, 0 } | |
201 | ||
202 | struct KVMState; | |
203 | ||
204 | #define TYPE_KVM_ACCEL ACCEL_CLASS_NAME("kvm") | |
205 | typedef struct KVMState KVMState; | |
206 | DECLARE_INSTANCE_CHECKER(KVMState, KVM_STATE, | |
207 | TYPE_KVM_ACCEL) | |
208 | ||
209 | extern KVMState *kvm_state; | |
210 | typedef struct Notifier Notifier; | |
211 | ||
212 | /* external API */ | |
213 | ||
214 | bool kvm_has_free_slot(MachineState *ms); | |
215 | bool kvm_has_sync_mmu(void); | |
216 | int kvm_has_vcpu_events(void); | |
217 | int kvm_has_robust_singlestep(void); | |
218 | int kvm_has_debugregs(void); | |
219 | int kvm_max_nested_state_length(void); | |
220 | int kvm_has_pit_state2(void); | |
221 | int kvm_has_many_ioeventfds(void); | |
222 | int kvm_has_gsi_routing(void); | |
223 | int kvm_has_intx_set_mask(void); | |
224 | ||
225 | /** | |
226 | * kvm_arm_supports_user_irq | |
227 | * | |
228 | * Not all KVM implementations support notifications for kernel generated | |
229 | * interrupt events to user space. This function indicates whether the current | |
230 | * KVM implementation does support them. | |
231 | * | |
232 | * Returns: true if KVM supports using kernel generated IRQs from user space | |
233 | */ | |
234 | bool kvm_arm_supports_user_irq(void); | |
235 | ||
236 | ||
237 | #ifdef NEED_CPU_H | |
238 | #include "cpu.h" | |
239 | ||
240 | void kvm_flush_coalesced_mmio_buffer(void); | |
241 | ||
242 | int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr, | |
243 | target_ulong len, int type); | |
244 | int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr, | |
245 | target_ulong len, int type); | |
246 | void kvm_remove_all_breakpoints(CPUState *cpu); | |
247 | int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap); | |
248 | ||
249 | int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr); | |
250 | int kvm_on_sigbus(int code, void *addr); | |
251 | ||
252 | /* internal API */ | |
253 | ||
254 | int kvm_ioctl(KVMState *s, int type, ...); | |
255 | ||
256 | int kvm_vm_ioctl(KVMState *s, int type, ...); | |
257 | ||
258 | int kvm_vcpu_ioctl(CPUState *cpu, int type, ...); | |
259 | ||
260 | /** | |
261 | * kvm_device_ioctl - call an ioctl on a kvm device | |
262 | * @fd: The KVM device file descriptor as returned from KVM_CREATE_DEVICE | |
263 | * @type: The device-ctrl ioctl number | |
264 | * | |
265 | * Returns: -errno on error, nonnegative on success | |
266 | */ | |
267 | int kvm_device_ioctl(int fd, int type, ...); | |
268 | ||
269 | /** | |
270 | * kvm_vm_check_attr - check for existence of a specific vm attribute | |
271 | * @s: The KVMState pointer | |
272 | * @group: the group | |
273 | * @attr: the attribute of that group to query for | |
274 | * | |
275 | * Returns: 1 if the attribute exists | |
276 | * 0 if the attribute either does not exist or if the vm device | |
277 | * interface is unavailable | |
278 | */ | |
279 | int kvm_vm_check_attr(KVMState *s, uint32_t group, uint64_t attr); | |
280 | ||
281 | /** | |
282 | * kvm_device_check_attr - check for existence of a specific device attribute | |
283 | * @fd: The device file descriptor | |
284 | * @group: the group | |
285 | * @attr: the attribute of that group to query for | |
286 | * | |
287 | * Returns: 1 if the attribute exists | |
288 | * 0 if the attribute either does not exist or if the vm device | |
289 | * interface is unavailable | |
290 | */ | |
291 | int kvm_device_check_attr(int fd, uint32_t group, uint64_t attr); | |
292 | ||
293 | /** | |
294 | * kvm_device_access - set or get value of a specific device attribute | |
295 | * @fd: The device file descriptor | |
296 | * @group: the group | |
297 | * @attr: the attribute of that group to set or get | |
298 | * @val: pointer to a storage area for the value | |
299 | * @write: true for set and false for get operation | |
300 | * @errp: error object handle | |
301 | * | |
302 | * Returns: 0 on success | |
303 | * < 0 on error | |
304 | * Use kvm_device_check_attr() in order to check for the availability | |
305 | * of optional attributes. | |
306 | */ | |
307 | int kvm_device_access(int fd, int group, uint64_t attr, | |
308 | void *val, bool write, Error **errp); | |
309 | ||
310 | /** | |
311 | * kvm_create_device - create a KVM device for the device control API | |
312 | * @KVMState: The KVMState pointer | |
313 | * @type: The KVM device type (see Documentation/virtual/kvm/devices in the | |
314 | * kernel source) | |
315 | * @test: If true, only test if device can be created, but don't actually | |
316 | * create the device. | |
317 | * | |
318 | * Returns: -errno on error, nonnegative on success: @test ? 0 : device fd; | |
319 | */ | |
320 | int kvm_create_device(KVMState *s, uint64_t type, bool test); | |
321 | ||
322 | /** | |
323 | * kvm_device_supported - probe whether KVM supports specific device | |
324 | * | |
325 | * @vmfd: The fd handler for VM | |
326 | * @type: type of device | |
327 | * | |
328 | * @return: true if supported, otherwise false. | |
329 | */ | |
330 | bool kvm_device_supported(int vmfd, uint64_t type); | |
331 | ||
332 | /* Arch specific hooks */ | |
333 | ||
334 | extern const KVMCapabilityInfo kvm_arch_required_capabilities[]; | |
335 | ||
336 | void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run); | |
337 | MemTxAttrs kvm_arch_post_run(CPUState *cpu, struct kvm_run *run); | |
338 | ||
339 | int kvm_arch_handle_exit(CPUState *cpu, struct kvm_run *run); | |
340 | ||
341 | int kvm_arch_process_async_events(CPUState *cpu); | |
342 | ||
343 | int kvm_arch_get_registers(CPUState *cpu); | |
344 | ||
345 | /* state subset only touched by the VCPU itself during runtime */ | |
346 | #define KVM_PUT_RUNTIME_STATE 1 | |
347 | /* state subset modified during VCPU reset */ | |
348 | #define KVM_PUT_RESET_STATE 2 | |
349 | /* full state set, modified during initialization or on vmload */ | |
350 | #define KVM_PUT_FULL_STATE 3 | |
351 | ||
352 | int kvm_arch_put_registers(CPUState *cpu, int level); | |
353 | ||
354 | int kvm_arch_init(MachineState *ms, KVMState *s); | |
355 | ||
356 | int kvm_arch_init_vcpu(CPUState *cpu); | |
357 | int kvm_arch_destroy_vcpu(CPUState *cpu); | |
358 | ||
359 | bool kvm_vcpu_id_is_valid(int vcpu_id); | |
360 | ||
361 | /* Returns VCPU ID to be used on KVM_CREATE_VCPU ioctl() */ | |
362 | unsigned long kvm_arch_vcpu_id(CPUState *cpu); | |
363 | ||
364 | #ifdef KVM_HAVE_MCE_INJECTION | |
365 | void kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr); | |
366 | #endif | |
367 | ||
368 | void kvm_arch_init_irq_routing(KVMState *s); | |
369 | ||
370 | int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route, | |
371 | uint64_t address, uint32_t data, PCIDevice *dev); | |
372 | ||
373 | /* Notify arch about newly added MSI routes */ | |
374 | int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route, | |
375 | int vector, PCIDevice *dev); | |
376 | /* Notify arch about released MSI routes */ | |
377 | int kvm_arch_release_virq_post(int virq); | |
378 | ||
379 | int kvm_arch_msi_data_to_gsi(uint32_t data); | |
380 | ||
381 | int kvm_set_irq(KVMState *s, int irq, int level); | |
382 | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg); | |
383 | ||
384 | void kvm_irqchip_add_irq_route(KVMState *s, int gsi, int irqchip, int pin); | |
385 | ||
386 | void kvm_irqchip_add_change_notifier(Notifier *n); | |
387 | void kvm_irqchip_remove_change_notifier(Notifier *n); | |
388 | void kvm_irqchip_change_notify(void); | |
389 | ||
390 | void kvm_get_apic_state(DeviceState *d, struct kvm_lapic_state *kapic); | |
391 | ||
392 | struct kvm_guest_debug; | |
393 | struct kvm_debug_exit_arch; | |
394 | ||
395 | struct kvm_sw_breakpoint { | |
396 | target_ulong pc; | |
397 | target_ulong saved_insn; | |
398 | int use_count; | |
399 | QTAILQ_ENTRY(kvm_sw_breakpoint) entry; | |
400 | }; | |
401 | ||
402 | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *cpu, | |
403 | target_ulong pc); | |
404 | ||
405 | int kvm_sw_breakpoints_active(CPUState *cpu); | |
406 | ||
407 | int kvm_arch_insert_sw_breakpoint(CPUState *cpu, | |
408 | struct kvm_sw_breakpoint *bp); | |
409 | int kvm_arch_remove_sw_breakpoint(CPUState *cpu, | |
410 | struct kvm_sw_breakpoint *bp); | |
411 | int kvm_arch_insert_hw_breakpoint(target_ulong addr, | |
412 | target_ulong len, int type); | |
413 | int kvm_arch_remove_hw_breakpoint(target_ulong addr, | |
414 | target_ulong len, int type); | |
415 | void kvm_arch_remove_all_hw_breakpoints(void); | |
416 | ||
417 | void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg); | |
418 | ||
419 | bool kvm_arch_stop_on_emulation_error(CPUState *cpu); | |
420 | ||
421 | int kvm_check_extension(KVMState *s, unsigned int extension); | |
422 | ||
423 | int kvm_vm_check_extension(KVMState *s, unsigned int extension); | |
424 | ||
425 | #define kvm_vm_enable_cap(s, capability, cap_flags, ...) \ | |
426 | ({ \ | |
427 | struct kvm_enable_cap cap = { \ | |
428 | .cap = capability, \ | |
429 | .flags = cap_flags, \ | |
430 | }; \ | |
431 | uint64_t args_tmp[] = { __VA_ARGS__ }; \ | |
432 | size_t n = MIN(ARRAY_SIZE(args_tmp), ARRAY_SIZE(cap.args)); \ | |
433 | memcpy(cap.args, args_tmp, n * sizeof(cap.args[0])); \ | |
434 | kvm_vm_ioctl(s, KVM_ENABLE_CAP, &cap); \ | |
435 | }) | |
436 | ||
437 | #define kvm_vcpu_enable_cap(cpu, capability, cap_flags, ...) \ | |
438 | ({ \ | |
439 | struct kvm_enable_cap cap = { \ | |
440 | .cap = capability, \ | |
441 | .flags = cap_flags, \ | |
442 | }; \ | |
443 | uint64_t args_tmp[] = { __VA_ARGS__ }; \ | |
444 | size_t n = MIN(ARRAY_SIZE(args_tmp), ARRAY_SIZE(cap.args)); \ | |
445 | memcpy(cap.args, args_tmp, n * sizeof(cap.args[0])); \ | |
446 | kvm_vcpu_ioctl(cpu, KVM_ENABLE_CAP, &cap); \ | |
447 | }) | |
448 | ||
449 | uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function, | |
450 | uint32_t index, int reg); | |
451 | uint64_t kvm_arch_get_supported_msr_feature(KVMState *s, uint32_t index); | |
452 | ||
453 | ||
454 | void kvm_set_sigmask_len(KVMState *s, unsigned int sigmask_len); | |
455 | ||
456 | #if !defined(CONFIG_USER_ONLY) | |
457 | int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr, | |
458 | hwaddr *phys_addr); | |
459 | #endif | |
460 | ||
461 | #endif /* NEED_CPU_H */ | |
462 | ||
463 | void kvm_cpu_synchronize_state(CPUState *cpu); | |
464 | ||
465 | void kvm_init_cpu_signals(CPUState *cpu); | |
466 | ||
467 | /** | |
468 | * kvm_irqchip_add_msi_route - Add MSI route for specific vector | |
469 | * @s: KVM state | |
470 | * @vector: which vector to add. This can be either MSI/MSIX | |
471 | * vector. The function will automatically detect whether | |
472 | * MSI/MSIX is enabled, and fetch corresponding MSI | |
473 | * message. | |
474 | * @dev: Owner PCI device to add the route. If @dev is specified | |
475 | * as @NULL, an empty MSI message will be inited. | |
476 | * @return: virq (>=0) when success, errno (<0) when failed. | |
477 | */ | |
478 | int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev); | |
479 | int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg, | |
480 | PCIDevice *dev); | |
481 | void kvm_irqchip_commit_routes(KVMState *s); | |
482 | void kvm_irqchip_release_virq(KVMState *s, int virq); | |
483 | ||
484 | int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter); | |
485 | int kvm_irqchip_add_hv_sint_route(KVMState *s, uint32_t vcpu, uint32_t sint); | |
486 | ||
487 | int kvm_irqchip_add_irqfd_notifier_gsi(KVMState *s, EventNotifier *n, | |
488 | EventNotifier *rn, int virq); | |
489 | int kvm_irqchip_remove_irqfd_notifier_gsi(KVMState *s, EventNotifier *n, | |
490 | int virq); | |
491 | int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n, | |
492 | EventNotifier *rn, qemu_irq irq); | |
493 | int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, | |
494 | qemu_irq irq); | |
495 | void kvm_irqchip_set_qemuirq_gsi(KVMState *s, qemu_irq irq, int gsi); | |
496 | void kvm_pc_setup_irq_routing(bool pci_enabled); | |
497 | void kvm_init_irq_routing(KVMState *s); | |
498 | ||
499 | bool kvm_kernel_irqchip_allowed(void); | |
500 | bool kvm_kernel_irqchip_required(void); | |
501 | bool kvm_kernel_irqchip_split(void); | |
502 | ||
503 | /** | |
504 | * kvm_arch_irqchip_create: | |
505 | * @KVMState: The KVMState pointer | |
506 | * | |
507 | * Allow architectures to create an in-kernel irq chip themselves. | |
508 | * | |
509 | * Returns: < 0: error | |
510 | * 0: irq chip was not created | |
511 | * > 0: irq chip was created | |
512 | */ | |
513 | int kvm_arch_irqchip_create(KVMState *s); | |
514 | ||
515 | /** | |
516 | * kvm_set_one_reg - set a register value in KVM via KVM_SET_ONE_REG ioctl | |
517 | * @id: The register ID | |
518 | * @source: The pointer to the value to be set. It must point to a variable | |
519 | * of the correct type/size for the register being accessed. | |
520 | * | |
521 | * Returns: 0 on success, or a negative errno on failure. | |
522 | */ | |
523 | int kvm_set_one_reg(CPUState *cs, uint64_t id, void *source); | |
524 | ||
525 | /** | |
526 | * kvm_get_one_reg - get a register value from KVM via KVM_GET_ONE_REG ioctl | |
527 | * @id: The register ID | |
528 | * @target: The pointer where the value is to be stored. It must point to a | |
529 | * variable of the correct type/size for the register being accessed. | |
530 | * | |
531 | * Returns: 0 on success, or a negative errno on failure. | |
532 | */ | |
533 | int kvm_get_one_reg(CPUState *cs, uint64_t id, void *target); | |
534 | struct ppc_radix_page_info *kvm_get_radix_page_info(void); | |
535 | int kvm_get_max_memslots(void); | |
536 | ||
537 | /* Notify resamplefd for EOI of specific interrupts. */ | |
538 | void kvm_resample_fd_notify(int gsi); | |
539 | ||
540 | /** | |
541 | * kvm_cpu_check_are_resettable - return whether CPUs can be reset | |
542 | * | |
543 | * Returns: true: CPUs are resettable | |
544 | * false: CPUs are not resettable | |
545 | */ | |
546 | bool kvm_cpu_check_are_resettable(void); | |
547 | ||
548 | bool kvm_arch_cpu_check_are_resettable(void); | |
549 | ||
550 | #endif |