| 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 | /* header to be included in non-KVM-specific code */ |
| 15 | |
| 16 | #ifndef QEMU_KVM_H |
| 17 | #define QEMU_KVM_H |
| 18 | |
| 19 | #include "exec/memattrs.h" |
| 20 | #include "gdbstub/enums.h" |
| 21 | #include "qemu/accel.h" |
| 22 | #include "accel/accel-route.h" |
| 23 | #include "qom/object.h" |
| 24 | |
| 25 | #ifdef COMPILING_PER_TARGET |
| 26 | # ifdef CONFIG_KVM |
| 27 | # include <linux/kvm.h> |
| 28 | # define CONFIG_KVM_IS_POSSIBLE |
| 29 | # endif |
| 30 | #else |
| 31 | # define CONFIG_KVM_IS_POSSIBLE |
| 32 | #endif |
| 33 | |
| 34 | #ifdef CONFIG_KVM_IS_POSSIBLE |
| 35 | |
| 36 | extern bool kvm_allowed; |
| 37 | extern bool kvm_kernel_irqchip; |
| 38 | extern bool kvm_split_irqchip; |
| 39 | extern bool kvm_async_interrupts_allowed; |
| 40 | extern bool kvm_halt_in_kernel_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_msi_use_devid; |
| 47 | extern bool kvm_pre_fault_memory_supported; |
| 48 | |
| 49 | #define kvm_enabled() (kvm_allowed) |
| 50 | /** |
| 51 | * kvm_irqchip_in_kernel: |
| 52 | * |
| 53 | * Returns: true if an in-kernel irqchip was created. |
| 54 | * What this actually means is architecture and machine model |
| 55 | * specific: on PC, for instance, it means that the LAPIC |
| 56 | * is in kernel. This function should never be used from generic |
| 57 | * target-independent code: use one of the following functions or |
| 58 | * some other specific check instead. |
| 59 | */ |
| 60 | #define kvm_irqchip_in_kernel() (kvm_kernel_irqchip) |
| 61 | |
| 62 | /** |
| 63 | * kvm_irqchip_is_split: |
| 64 | * |
| 65 | * Returns: true if the irqchip implementation is split between |
| 66 | * user and kernel space. The details are architecture and |
| 67 | * machine specific. On PC, it means that the PIC, IOAPIC, and |
| 68 | * PIT are in user space while the LAPIC is in the kernel. |
| 69 | */ |
| 70 | #define kvm_irqchip_is_split() (kvm_split_irqchip) |
| 71 | |
| 72 | /** |
| 73 | * kvm_async_interrupts_enabled: |
| 74 | * |
| 75 | * Returns: true if we can deliver interrupts to KVM |
| 76 | * asynchronously (ie by ioctl from any thread at any time) |
| 77 | * rather than having to do interrupt delivery synchronously |
| 78 | * (where the vcpu must be stopped at a suitable point first). |
| 79 | */ |
| 80 | #define kvm_async_interrupts_enabled() (kvm_async_interrupts_allowed) |
| 81 | |
| 82 | /** |
| 83 | * kvm_halt_in_kernel |
| 84 | * |
| 85 | * Returns: true if halted cpus should still get a KVM_RUN ioctl to run |
| 86 | * inside of kernel space. This only works if MP state is implemented. |
| 87 | */ |
| 88 | #define kvm_halt_in_kernel() (kvm_halt_in_kernel_allowed) |
| 89 | |
| 90 | /** |
| 91 | * kvm_irqfds_enabled: |
| 92 | * |
| 93 | * Returns: true if we can use irqfds to inject interrupts into |
| 94 | * a KVM CPU (ie the kernel supports irqfds and we are running |
| 95 | * with a configuration where it is meaningful to use them). |
| 96 | * |
| 97 | * Always available if running with in-kernel irqchip. |
| 98 | */ |
| 99 | #define kvm_irqfds_enabled() kvm_irqchip_in_kernel() |
| 100 | |
| 101 | /** |
| 102 | * kvm_resamplefds_enabled: |
| 103 | * |
| 104 | * Returns: true if we can use resamplefds to inject interrupts into |
| 105 | * a KVM CPU (ie the kernel supports resamplefds and we are running |
| 106 | * with a configuration where it is meaningful to use them). |
| 107 | */ |
| 108 | #define kvm_resamplefds_enabled() (kvm_resamplefds_allowed) |
| 109 | |
| 110 | /** |
| 111 | * kvm_msi_via_irqfd_enabled: |
| 112 | * |
| 113 | * Returns: true if we can route a PCI MSI (Message Signaled Interrupt) |
| 114 | * to a KVM CPU via an irqfd. This requires that the kernel supports |
| 115 | * this and that we're running in a configuration that permits it. |
| 116 | */ |
| 117 | #define kvm_msi_via_irqfd_enabled() (kvm_msi_via_irqfd_allowed) |
| 118 | |
| 119 | /** |
| 120 | * kvm_gsi_routing_enabled: |
| 121 | * |
| 122 | * Returns: true if GSI routing is enabled (ie the kernel supports |
| 123 | * it and we're running in a configuration that permits it). |
| 124 | */ |
| 125 | #define kvm_gsi_routing_enabled() (kvm_gsi_routing_allowed) |
| 126 | |
| 127 | /** |
| 128 | * kvm_gsi_direct_mapping: |
| 129 | * |
| 130 | * Returns: true if GSI direct mapping is enabled. |
| 131 | */ |
| 132 | #define kvm_gsi_direct_mapping() (kvm_gsi_direct_mapping) |
| 133 | |
| 134 | /** |
| 135 | * kvm_readonly_mem_enabled: |
| 136 | * |
| 137 | * Returns: true if KVM readonly memory is enabled (ie the kernel |
| 138 | * supports it and we're running in a configuration that permits it). |
| 139 | */ |
| 140 | #define kvm_readonly_mem_enabled() (kvm_readonly_mem_allowed) |
| 141 | |
| 142 | /** |
| 143 | * kvm_msi_devid_required: |
| 144 | * Returns: true if KVM requires a device id to be provided while |
| 145 | * defining an MSI routing entry. |
| 146 | */ |
| 147 | #define kvm_msi_devid_required() (kvm_msi_use_devid) |
| 148 | |
| 149 | #else |
| 150 | |
| 151 | #define kvm_enabled() (0) |
| 152 | #define kvm_irqchip_in_kernel() (false) |
| 153 | #define kvm_irqchip_is_split() (false) |
| 154 | #define kvm_async_interrupts_enabled() (false) |
| 155 | #define kvm_halt_in_kernel() (false) |
| 156 | #define kvm_irqfds_enabled() (false) |
| 157 | #define kvm_resamplefds_enabled() (false) |
| 158 | #define kvm_msi_via_irqfd_enabled() (false) |
| 159 | #define kvm_gsi_routing_allowed() (false) |
| 160 | #define kvm_gsi_direct_mapping() (false) |
| 161 | #define kvm_readonly_mem_enabled() (false) |
| 162 | #define kvm_msi_devid_required() (false) |
| 163 | |
| 164 | #endif /* CONFIG_KVM_IS_POSSIBLE */ |
| 165 | |
| 166 | struct kvm_run; |
| 167 | struct kvm_irq_routing_entry; |
| 168 | |
| 169 | typedef struct KVMCapabilityInfo { |
| 170 | const char *name; |
| 171 | int value; |
| 172 | } KVMCapabilityInfo; |
| 173 | |
| 174 | #define KVM_CAP_INFO(CAP) { "KVM_CAP_" stringify(CAP), KVM_CAP_##CAP } |
| 175 | #define KVM_CAP_LAST_INFO { NULL, 0 } |
| 176 | |
| 177 | struct KVMState; |
| 178 | |
| 179 | #define TYPE_KVM_ACCEL ACCEL_CLASS_NAME("kvm") |
| 180 | typedef struct KVMState KVMState; |
| 181 | DECLARE_INSTANCE_CHECKER(KVMState, KVM_STATE, |
| 182 | TYPE_KVM_ACCEL) |
| 183 | |
| 184 | extern KVMState *kvm_state; |
| 185 | typedef struct Notifier Notifier; |
| 186 | typedef struct NotifierWithReturn NotifierWithReturn; |
| 187 | |
| 188 | /* external API */ |
| 189 | |
| 190 | unsigned int kvm_get_max_memslots(void); |
| 191 | unsigned int kvm_get_free_memslots(void); |
| 192 | bool kvm_has_sync_mmu(void); |
| 193 | int kvm_has_vcpu_events(void); |
| 194 | int kvm_max_nested_state_length(void); |
| 195 | int kvm_has_gsi_routing(void); |
| 196 | void kvm_close(void); |
| 197 | |
| 198 | /** |
| 199 | * kvm_arm_supports_user_irq |
| 200 | * |
| 201 | * Not all KVM implementations support notifications for kernel generated |
| 202 | * interrupt events to user space. This function indicates whether the current |
| 203 | * KVM implementation does support them. |
| 204 | * |
| 205 | * Returns: true if KVM supports using kernel generated IRQs from user space |
| 206 | */ |
| 207 | bool kvm_arm_supports_user_irq(void); |
| 208 | |
| 209 | |
| 210 | int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr); |
| 211 | int kvm_on_sigbus(int code, void *addr); |
| 212 | |
| 213 | int kvm_check_extension(KVMState *s, unsigned int extension); |
| 214 | |
| 215 | int kvm_vm_ioctl(KVMState *s, unsigned long type, ...); |
| 216 | |
| 217 | void kvm_flush_coalesced_mmio_buffer(void); |
| 218 | |
| 219 | void kvm_irqchip_add_change_notifier(Notifier *n); |
| 220 | void kvm_irqchip_remove_change_notifier(Notifier *n); |
| 221 | void kvm_irqchip_change_notify(void); |
| 222 | |
| 223 | #ifdef COMPILING_PER_TARGET |
| 224 | #include "cpu.h" |
| 225 | |
| 226 | /** |
| 227 | * kvm_update_guest_debug(): ensure KVM debug structures updated |
| 228 | * @cs: the CPUState for this cpu |
| 229 | * @reinject_trap: KVM trap injection control |
| 230 | * |
| 231 | * There are usually per-arch specifics which will be handled by |
| 232 | * calling down to kvm_arch_update_guest_debug after the generic |
| 233 | * fields have been set. |
| 234 | */ |
| 235 | #ifdef TARGET_KVM_HAVE_GUEST_DEBUG |
| 236 | int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap); |
| 237 | #else |
| 238 | static inline int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap) |
| 239 | { |
| 240 | return -EINVAL; |
| 241 | } |
| 242 | #endif |
| 243 | |
| 244 | /* internal API */ |
| 245 | |
| 246 | int kvm_ioctl(KVMState *s, unsigned long type, ...); |
| 247 | |
| 248 | int kvm_vcpu_ioctl(CPUState *cpu, unsigned long type, ...); |
| 249 | |
| 250 | /** |
| 251 | * kvm_device_ioctl - call an ioctl on a kvm device |
| 252 | * @fd: The KVM device file descriptor as returned from KVM_CREATE_DEVICE |
| 253 | * @type: The device-ctrl ioctl number |
| 254 | * |
| 255 | * Returns: -errno on error, nonnegative on success |
| 256 | */ |
| 257 | int kvm_device_ioctl(int fd, unsigned long type, ...); |
| 258 | |
| 259 | /** |
| 260 | * kvm_vm_check_attr - check for existence of a specific vm attribute |
| 261 | * @s: The KVMState pointer |
| 262 | * @group: the group |
| 263 | * @attr: the attribute of that group to query for |
| 264 | * |
| 265 | * Returns: 1 if the attribute exists |
| 266 | * 0 if the attribute either does not exist or if the vm device |
| 267 | * interface is unavailable |
| 268 | */ |
| 269 | int kvm_vm_check_attr(KVMState *s, uint32_t group, uint64_t attr); |
| 270 | |
| 271 | /** |
| 272 | * kvm_device_check_attr - check for existence of a specific device attribute |
| 273 | * @fd: The device file descriptor |
| 274 | * @group: the group |
| 275 | * @attr: the attribute of that group to query for |
| 276 | * |
| 277 | * Returns: 1 if the attribute exists |
| 278 | * 0 if the attribute either does not exist or if the vm device |
| 279 | * interface is unavailable |
| 280 | */ |
| 281 | int kvm_device_check_attr(int fd, uint32_t group, uint64_t attr); |
| 282 | |
| 283 | /** |
| 284 | * kvm_device_access - set or get value of a specific device attribute |
| 285 | * @fd: The device file descriptor |
| 286 | * @group: the group |
| 287 | * @attr: the attribute of that group to set or get |
| 288 | * @val: pointer to a storage area for the value |
| 289 | * @write: true for set and false for get operation |
| 290 | * @errp: error object handle |
| 291 | * |
| 292 | * Returns: 0 on success |
| 293 | * < 0 on error |
| 294 | * Use kvm_device_check_attr() in order to check for the availability |
| 295 | * of optional attributes. |
| 296 | */ |
| 297 | int kvm_device_access(int fd, int group, uint64_t attr, |
| 298 | void *val, bool write, Error **errp); |
| 299 | |
| 300 | /** |
| 301 | * kvm_create_device - create a KVM device for the device control API |
| 302 | * @KVMState: The KVMState pointer |
| 303 | * @type: The KVM device type (see Documentation/virtual/kvm/devices in the |
| 304 | * kernel source) |
| 305 | * @test: If true, only test if device can be created, but don't actually |
| 306 | * create the device. |
| 307 | * |
| 308 | * Returns: -errno on error, nonnegative on success: @test ? 0 : device fd; |
| 309 | */ |
| 310 | int kvm_create_device(KVMState *s, uint64_t type, bool test); |
| 311 | |
| 312 | /** |
| 313 | * kvm_device_supported - probe whether KVM supports specific device |
| 314 | * |
| 315 | * @vmfd: The fd handler for VM |
| 316 | * @type: type of device |
| 317 | * |
| 318 | * @return: true if supported, otherwise false. |
| 319 | */ |
| 320 | bool kvm_device_supported(int vmfd, uint64_t type); |
| 321 | |
| 322 | /** |
| 323 | * kvm_create_and_park_vcpu - Create and park a KVM vCPU |
| 324 | * @cpu: QOM CPUState object for which KVM vCPU has to be created and parked. |
| 325 | * |
| 326 | * @returns: 0 when success, errno (<0) when failed. |
| 327 | */ |
| 328 | int kvm_create_and_park_vcpu(CPUState *cpu); |
| 329 | |
| 330 | /* Arch specific hooks */ |
| 331 | |
| 332 | extern const KVMCapabilityInfo kvm_arch_required_capabilities[]; |
| 333 | |
| 334 | void kvm_arch_accel_class_init(ObjectClass *oc); |
| 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, Error **errp); |
| 344 | |
| 345 | typedef enum kvm_put_state { |
| 346 | /* state subset only touched by the VCPU itself during runtime */ |
| 347 | KVM_PUT_RUNTIME_STATE = 1, |
| 348 | /* state subset modified during VCPU reset */ |
| 349 | KVM_PUT_RESET_STATE = 2, |
| 350 | /* full state set, modified during initialization or on vmload */ |
| 351 | KVM_PUT_FULL_STATE = 3, |
| 352 | } KvmPutState; |
| 353 | |
| 354 | int kvm_arch_put_registers(CPUState *cpu, KvmPutState level, Error **errp); |
| 355 | |
| 356 | int kvm_arch_get_default_type(MachineState *ms); |
| 357 | |
| 358 | int kvm_arch_init(MachineState *ms, KVMState *s); |
| 359 | |
| 360 | int kvm_arch_pre_create_vcpu(CPUState *cpu, Error **errp); |
| 361 | int kvm_arch_init_vcpu(CPUState *cpu); |
| 362 | int kvm_arch_destroy_vcpu(CPUState *cpu); |
| 363 | |
| 364 | #ifdef TARGET_KVM_HAVE_RESET_PARKED_VCPU |
| 365 | void kvm_arch_reset_parked_vcpu(unsigned long vcpu_id, int kvm_fd); |
| 366 | #else |
| 367 | static inline void kvm_arch_reset_parked_vcpu(unsigned long vcpu_id, int kvm_fd) |
| 368 | { |
| 369 | } |
| 370 | #endif |
| 371 | |
| 372 | bool kvm_vcpu_id_is_valid(int vcpu_id); |
| 373 | |
| 374 | /* Returns VCPU ID to be used on KVM_CREATE_VCPU ioctl() */ |
| 375 | unsigned long kvm_arch_vcpu_id(CPUState *cpu); |
| 376 | |
| 377 | void kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr); |
| 378 | |
| 379 | void kvm_arch_init_irq_routing(KVMState *s); |
| 380 | |
| 381 | int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route, |
| 382 | uint64_t address, uint32_t data, PCIDevice *dev); |
| 383 | |
| 384 | /* Notify arch about newly added MSI routes */ |
| 385 | int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route, |
| 386 | int vector, PCIDevice *dev); |
| 387 | /* Notify arch about released MSI routes */ |
| 388 | int kvm_arch_release_virq_post(int virq); |
| 389 | |
| 390 | int kvm_arch_msi_data_to_gsi(uint32_t data); |
| 391 | |
| 392 | int kvm_set_irq(KVMState *s, int irq, int level); |
| 393 | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg); |
| 394 | |
| 395 | void kvm_irqchip_add_irq_route(KVMState *s, int gsi, int irqchip, int pin); |
| 396 | |
| 397 | struct kvm_guest_debug; |
| 398 | struct kvm_debug_exit_arch; |
| 399 | |
| 400 | struct kvm_sw_breakpoint { |
| 401 | vaddr pc; |
| 402 | vaddr saved_insn; |
| 403 | int use_count; |
| 404 | QTAILQ_ENTRY(kvm_sw_breakpoint) entry; |
| 405 | }; |
| 406 | |
| 407 | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *cpu, |
| 408 | vaddr pc); |
| 409 | |
| 410 | int kvm_sw_breakpoints_active(CPUState *cpu); |
| 411 | |
| 412 | int kvm_arch_insert_sw_breakpoint(CPUState *cpu, |
| 413 | struct kvm_sw_breakpoint *bp); |
| 414 | int kvm_arch_remove_sw_breakpoint(CPUState *cpu, |
| 415 | struct kvm_sw_breakpoint *bp); |
| 416 | int kvm_arch_insert_gdbstub_hw_breakpoint(vaddr addr, vaddr len, |
| 417 | GdbBreakpointType type); |
| 418 | int kvm_arch_remove_gdbstub_hw_breakpoint(vaddr addr, vaddr len, |
| 419 | GdbBreakpointType type); |
| 420 | void kvm_arch_remove_all_gdbstub_hw_breakpoints(void); |
| 421 | |
| 422 | void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg); |
| 423 | |
| 424 | bool kvm_arch_stop_on_emulation_error(CPUState *cpu); |
| 425 | |
| 426 | int kvm_vm_check_extension(KVMState *s, unsigned int extension); |
| 427 | |
| 428 | #define kvm_vm_enable_cap(s, capability, cap_flags, ...) \ |
| 429 | ({ \ |
| 430 | struct kvm_enable_cap cap = { \ |
| 431 | .cap = capability, \ |
| 432 | .flags = cap_flags, \ |
| 433 | }; \ |
| 434 | uint64_t args_tmp[] = { __VA_ARGS__ }; \ |
| 435 | size_t n = MIN(ARRAY_SIZE(args_tmp), ARRAY_SIZE(cap.args)); \ |
| 436 | memcpy(cap.args, args_tmp, n * sizeof(cap.args[0])); \ |
| 437 | kvm_vm_ioctl(s, KVM_ENABLE_CAP, &cap); \ |
| 438 | }) |
| 439 | |
| 440 | #define kvm_vcpu_enable_cap(cpu, capability, cap_flags, ...) \ |
| 441 | ({ \ |
| 442 | struct kvm_enable_cap cap = { \ |
| 443 | .cap = capability, \ |
| 444 | .flags = cap_flags, \ |
| 445 | }; \ |
| 446 | uint64_t args_tmp[] = { __VA_ARGS__ }; \ |
| 447 | size_t n = MIN(ARRAY_SIZE(args_tmp), ARRAY_SIZE(cap.args)); \ |
| 448 | memcpy(cap.args, args_tmp, n * sizeof(cap.args[0])); \ |
| 449 | kvm_vcpu_ioctl(cpu, KVM_ENABLE_CAP, &cap); \ |
| 450 | }) |
| 451 | |
| 452 | void kvm_set_sigmask_len(KVMState *s, unsigned int sigmask_len); |
| 453 | |
| 454 | int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr, |
| 455 | hwaddr *phys_addr); |
| 456 | |
| 457 | #endif /* COMPILING_PER_TARGET */ |
| 458 | |
| 459 | bool kvm_arch_supports_vmfd_change(void); |
| 460 | int kvm_arch_on_vmfd_change(MachineState *ms, KVMState *s); |
| 461 | |
| 462 | void kvm_cpu_synchronize_state(CPUState *cpu); |
| 463 | |
| 464 | void kvm_init_cpu_signals(CPUState *cpu); |
| 465 | |
| 466 | /** |
| 467 | * kvm_irqchip_add_msi_route - Add MSI route for specific vector |
| 468 | * @c: AccelRouteChange instance. |
| 469 | * @vector: which vector to add. This can be either MSI/MSIX |
| 470 | * vector. The function will automatically detect whether |
| 471 | * MSI/MSIX is enabled, and fetch corresponding MSI |
| 472 | * message. |
| 473 | * @dev: Owner PCI device to add the route. If @dev is specified |
| 474 | * as @NULL, an empty MSI message will be inited. |
| 475 | * @return: virq (>=0) when success, errno (<0) when failed. |
| 476 | */ |
| 477 | int kvm_irqchip_add_msi_route(AccelRouteChange *c, int vector, PCIDevice *dev); |
| 478 | int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg, |
| 479 | PCIDevice *dev); |
| 480 | void kvm_irqchip_commit_routes(KVMState *s); |
| 481 | |
| 482 | int kvm_irqchip_get_virq(KVMState *s); |
| 483 | void kvm_irqchip_release_virq(KVMState *s, int virq); |
| 484 | |
| 485 | void kvm_add_routing_entry(KVMState *s, |
| 486 | struct kvm_irq_routing_entry *entry); |
| 487 | |
| 488 | int kvm_irqchip_add_irqfd_notifier_gsi(KVMState *s, EventNotifier *n, |
| 489 | EventNotifier *rn, int virq); |
| 490 | int kvm_irqchip_remove_irqfd_notifier_gsi(KVMState *s, EventNotifier *n, |
| 491 | int virq); |
| 492 | int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n, |
| 493 | EventNotifier *rn, qemu_irq irq); |
| 494 | int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, |
| 495 | qemu_irq irq); |
| 496 | void kvm_irqchip_set_qemuirq_gsi(KVMState *s, qemu_irq irq, int gsi); |
| 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 | |
| 535 | /* Notify resamplefd for EOI of specific interrupts. */ |
| 536 | void kvm_resample_fd_notify(int gsi); |
| 537 | |
| 538 | bool kvm_dirty_ring_enabled(void); |
| 539 | |
| 540 | uint32_t kvm_dirty_ring_size(void); |
| 541 | |
| 542 | void kvm_mark_guest_state_protected(void); |
| 543 | |
| 544 | /** |
| 545 | * kvm_hwpoisoned_mem - indicate if there is any hwpoisoned page |
| 546 | * reported for the VM. |
| 547 | */ |
| 548 | bool kvm_hwpoisoned_mem(void); |
| 549 | |
| 550 | int kvm_create_guest_memfd(uint64_t size, uint64_t flags, Error **errp); |
| 551 | |
| 552 | int kvm_set_memory_attributes_private(hwaddr start, uint64_t size); |
| 553 | int kvm_set_memory_attributes_shared(hwaddr start, uint64_t size); |
| 554 | |
| 555 | int kvm_convert_memory(hwaddr start, hwaddr size, bool to_private); |
| 556 | |
| 557 | /* argument to vmfd change notifier */ |
| 558 | typedef struct VmfdChangeNotifier { |
| 559 | int vmfd; |
| 560 | bool pre; |
| 561 | } VmfdChangeNotifier; |
| 562 | |
| 563 | /** |
| 564 | * kvm_vmfd_add_change_notifier - register a notifier to get notified when |
| 565 | * a KVM vm file descriptor changes or about to be changed as a part of the |
| 566 | * confidential guest "reset" process. |
| 567 | * Various subsystems should use this mechanism to take actions such |
| 568 | * as creating new fds against this new vm file descriptor. |
| 569 | * @n: notifier with return value. |
| 570 | */ |
| 571 | void kvm_vmfd_add_change_notifier(NotifierWithReturn *n); |
| 572 | /** |
| 573 | * kvm_vmfd_remove_change_notifier - de-register a notifer previously |
| 574 | * registered with kvm_vmfd_add_change_notifier call. |
| 575 | * @n: notifier that was previously registered. |
| 576 | */ |
| 577 | void kvm_vmfd_remove_change_notifier(NotifierWithReturn *n); |
| 578 | |
| 579 | /** |
| 580 | * kvm_vcpufd_add_change_notifier - register a notifier to get notified when |
| 581 | * a KVM vcpu file descriptors changes as a part of the confidential guest |
| 582 | * "reset" process. Various subsystems should use this mechanism to take |
| 583 | * actions such as re-issuing vcpu ioctls as a part of setting up vcpu |
| 584 | * features. |
| 585 | * @n: notifier with return value. |
| 586 | */ |
| 587 | void kvm_vcpufd_add_change_notifier(NotifierWithReturn *n); |
| 588 | |
| 589 | /** |
| 590 | * kvm_vcpufd_remove_change_notifier - de-register a notifer previously |
| 591 | * registered with kvm_vcpufd_add_change_notifier call. |
| 592 | * @n: notifier that was previously registered. |
| 593 | */ |
| 594 | void kvm_vcpufd_remove_change_notifier(NotifierWithReturn *n); |
| 595 | |
| 596 | #endif |