Provide an interface for Virtual Machine Monitor like OpenVMM and its use as OpenHCL paravisor to control VTL0 (Virtual trust Level). Expose devices and support IOCTLs for features like VTL creation, VTL0 memory management, context switch, making hypercalls, mapping VTL0 address space to VTL2 userspace, getting new VMBus messages and channel events in VTL2 etc.
Showing the changes to include/uapi (1 of 11 files). Show all
Unified · Split
| @@ -322,4 +322,84 @@ struct mshv_get_set_vp_state { · 321 unmodified lines | |||
| 322 | * #define MSHV_ROOT_HVCALL _IOWR(MSHV_IOCTL, 0x07, struct mshv_root_hvcall) | 322 | * #define MSHV_ROOT_HVCALL _IOWR(MSHV_IOCTL, 0x07, struct mshv_root_hvcall) |
| 323 | */ | 323 | */ |
| 324 | 324 | ||
| 325 | /* Structure definitions, macros and IOCTLs for mshv_vtl */ | ||
| 326 | |||
| 327 | #define MSHV_CAP_CORE_API_STABLE 0x0 | ||
| 328 | #define MSHV_CAP_REGISTER_PAGE 0x1 | ||
| 329 | #define MSHV_CAP_VTL_RETURN_ACTION 0x2 | ||
| 330 | #define MSHV_CAP_DR6_SHARED 0x3 | ||
| 331 | #define MSHV_MAX_RUN_MSG_SIZE 256 | ||
| 332 | |||
| 333 | struct mshv_vp_registers { | ||
| 334 | __u32 count; /* supports only 1 register at a time */ | ||
| 335 | __u32 reserved; /* Reserved for alignment or future use */ | ||
| 336 | __u64 regs_ptr; /* pointer to struct hv_register_assoc */ | ||
| 337 | }; | ||
| 338 | |||
| 339 | struct mshv_vtl_set_eventfd { | ||
| 340 | __s32 fd; | ||
| 341 | __u32 flag; | ||
| 342 | }; | ||
| 343 | |||
| 344 | struct mshv_vtl_signal_event { | ||
| 345 | __u32 connection_id; | ||
| 346 | __u32 flag; | ||
| 347 | }; | ||
| 348 | |||
| 349 | struct mshv_vtl_sint_post_msg { | ||
| 350 | __u64 message_type; | ||
| 351 | __u32 connection_id; | ||
| 352 | __u32 payload_size; /* Must not exceed HV_MESSAGE_PAYLOAD_BYTE_COUNT */ | ||
| 353 | __u64 payload_ptr; /* pointer to message payload (bytes) */ | ||
| 354 | }; | ||
| 355 | |||
| 356 | struct mshv_vtl_ram_disposition { | ||
| 357 | __u64 start_pfn; | ||
| 358 | __u64 last_pfn; | ||
| 359 | }; | ||
| 360 | |||
| 361 | struct mshv_vtl_set_poll_file { | ||
| 362 | __u32 cpu; | ||
| 363 | __u32 fd; | ||
| 364 | }; | ||
| 365 | |||
| 366 | struct mshv_vtl_hvcall_setup { | ||
| 367 | __u64 bitmap_array_size; /* stores number of bytes */ | ||
| 368 | __u64 allow_bitmap_ptr; | ||
| 369 | }; | ||
| 370 | |||
| 371 | struct mshv_vtl_hvcall { | ||
| 372 | __u64 control; /* Hypercall control code */ | ||
| 373 | __u64 input_size; /* Size of the input data */ | ||
| 374 | __u64 input_ptr; /* Pointer to the input struct */ | ||
| 375 | __u64 status; /* Status of the hypercall (output) */ | ||
| 376 | __u64 output_size; /* Size of the output data */ | ||
| 377 | __u64 output_ptr; /* Pointer to the output struct */ | ||
| 378 | }; | ||
| 379 | |||
| 380 | struct mshv_sint_mask { | ||
| 381 | __u8 mask; | ||
| 382 | __u8 reserved[7]; | ||
| 383 | }; | ||
| 384 | |||
| 385 | /* /dev/mshv device IOCTL */ | ||
| 386 | #define MSHV_CHECK_EXTENSION _IOW(MSHV_IOCTL, 0x00, __u32) | ||
| 387 | |||
| 388 | /* vtl device */ | ||
| 389 | #define MSHV_CREATE_VTL _IOR(MSHV_IOCTL, 0x1D, char) | ||
| 390 | #define MSHV_ADD_VTL0_MEMORY _IOW(MSHV_IOCTL, 0x21, struct mshv_vtl_ram_disposition) | ||
| 391 | #define MSHV_SET_POLL_FILE _IOW(MSHV_IOCTL, 0x25, struct mshv_vtl_set_poll_file) | ||
| 392 | #define MSHV_RETURN_TO_LOWER_VTL _IO(MSHV_IOCTL, 0x27) | ||
| 393 | #define MSHV_GET_VP_REGISTERS _IOWR(MSHV_IOCTL, 0x05, struct mshv_vp_registers) | ||
| 394 | #define MSHV_SET_VP_REGISTERS _IOW(MSHV_IOCTL, 0x06, struct mshv_vp_registers) | ||
| 395 | |||
| 396 | /* VMBus device IOCTLs */ | ||
| 397 | #define MSHV_SINT_SIGNAL_EVENT _IOW(MSHV_IOCTL, 0x22, struct mshv_vtl_signal_event) | ||
| 398 | #define MSHV_SINT_POST_MESSAGE _IOW(MSHV_IOCTL, 0x23, struct mshv_vtl_sint_post_msg) | ||
| 399 | #define MSHV_SINT_SET_EVENTFD _IOW(MSHV_IOCTL, 0x24, struct mshv_vtl_set_eventfd) | ||
| 400 | #define MSHV_SINT_PAUSE_MESSAGE_STREAM _IOW(MSHV_IOCTL, 0x25, struct mshv_sint_mask) | ||
| 401 | |||
| 402 | /* hv_hvcall device */ | ||
| 403 | #define MSHV_HVCALL_SETUP _IOW(MSHV_IOCTL, 0x1E, struct mshv_vtl_hvcall_setup) | ||
| 404 | #define MSHV_HVCALL _IOWR(MSHV_IOCTL, 0x1F, struct mshv_vtl_hvcall) | ||
| 325 | #endif | 405 | #endif |