1 /* 2 * definition for kernel virtual machines on s390 3 * 4 * Copyright IBM Corp. 2008, 2009 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License (version 2 only) 8 * as published by the Free Software Foundation. 9 * 10 * Author(s): Carsten Otte <cotte@de.ibm.com> 11 */ 12 13 14 #ifndef ASM_KVM_HOST_H 15 #define ASM_KVM_HOST_H 16 17 #include <linux/types.h> 18 #include <linux/hrtimer.h> 19 #include <linux/interrupt.h> 20 #include <linux/kvm_types.h> 21 #include <linux/kvm_host.h> 22 #include <linux/kvm.h> 23 #include <asm/debug.h> 24 #include <asm/cpu.h> 25 #include <asm/isc.h> 26 27 #define KVM_MAX_VCPUS 64 28 #define KVM_USER_MEM_SLOTS 32 29 30 /* 31 * These seem to be used for allocating ->chip in the routing table, 32 * which we don't use. 4096 is an out-of-thin-air value. If we need 33 * to look at ->chip later on, we'll need to revisit this. 34 */ 35 #define KVM_NR_IRQCHIPS 1 36 #define KVM_IRQCHIP_NUM_PINS 4096 37 38 #define SIGP_CTRL_C 0x00800000 39 40 struct sca_entry { 41 atomic_t ctrl; 42 __u32 reserved; 43 __u64 sda; 44 __u64 reserved2[2]; 45 } __attribute__((packed)); 46 47 union ipte_control { 48 unsigned long val; 49 struct { 50 unsigned long k : 1; 51 unsigned long kh : 31; 52 unsigned long kg : 32; 53 }; 54 }; 55 56 struct sca_block { 57 union ipte_control ipte_control; 58 __u64 reserved[5]; 59 __u64 mcn; 60 __u64 reserved2; 61 struct sca_entry cpu[64]; 62 } __attribute__((packed)); 63 64 #define CPUSTAT_STOPPED 0x80000000 65 #define CPUSTAT_WAIT 0x10000000 66 #define CPUSTAT_ECALL_PEND 0x08000000 67 #define CPUSTAT_STOP_INT 0x04000000 68 #define CPUSTAT_IO_INT 0x02000000 69 #define CPUSTAT_EXT_INT 0x01000000 70 #define CPUSTAT_RUNNING 0x00800000 71 #define CPUSTAT_RETAINED 0x00400000 72 #define CPUSTAT_TIMING_SUB 0x00020000 73 #define CPUSTAT_SIE_SUB 0x00010000 74 #define CPUSTAT_RRF 0x00008000 75 #define CPUSTAT_SLSV 0x00004000 76 #define CPUSTAT_SLSR 0x00002000 77 #define CPUSTAT_ZARCH 0x00000800 78 #define CPUSTAT_MCDS 0x00000100 79 #define CPUSTAT_SM 0x00000080 80 #define CPUSTAT_IBS 0x00000040 81 #define CPUSTAT_G 0x00000008 82 #define CPUSTAT_GED 0x00000004 83 #define CPUSTAT_J 0x00000002 84 #define CPUSTAT_P 0x00000001 85 86 struct kvm_s390_sie_block { 87 atomic_t cpuflags; /* 0x0000 */ 88 __u32 : 1; /* 0x0004 */ 89 __u32 prefix : 18; 90 __u32 : 13; 91 __u8 reserved08[4]; /* 0x0008 */ 92 #define PROG_IN_SIE (1<<0) 93 __u32 prog0c; /* 0x000c */ 94 __u8 reserved10[16]; /* 0x0010 */ 95 #define PROG_BLOCK_SIE 0x00000001 96 atomic_t prog20; /* 0x0020 */ 97 __u8 reserved24[4]; /* 0x0024 */ 98 __u64 cputm; /* 0x0028 */ 99 __u64 ckc; /* 0x0030 */ 100 __u64 epoch; /* 0x0038 */ 101 __u8 reserved40[4]; /* 0x0040 */ 102 #define LCTL_CR0 0x8000 103 #define LCTL_CR6 0x0200 104 #define LCTL_CR9 0x0040 105 #define LCTL_CR10 0x0020 106 #define LCTL_CR11 0x0010 107 #define LCTL_CR14 0x0002 108 __u16 lctl; /* 0x0044 */ 109 __s16 icpua; /* 0x0046 */ 110 #define ICTL_PINT 0x20000000 111 #define ICTL_LPSW 0x00400000 112 #define ICTL_STCTL 0x00040000 113 #define ICTL_ISKE 0x00004000 114 #define ICTL_SSKE 0x00002000 115 #define ICTL_RRBE 0x00001000 116 #define ICTL_TPROT 0x00000200 117 __u32 ictl; /* 0x0048 */ 118 __u32 eca; /* 0x004c */ 119 #define ICPT_INST 0x04 120 #define ICPT_PROGI 0x08 121 #define ICPT_INSTPROGI 0x0C 122 #define ICPT_OPEREXC 0x2C 123 #define ICPT_PARTEXEC 0x38 124 #define ICPT_IOINST 0x40 125 __u8 icptcode; /* 0x0050 */ 126 __u8 icptstatus; /* 0x0051 */ 127 __u16 ihcpu; /* 0x0052 */ 128 __u8 reserved54[2]; /* 0x0054 */ 129 __u16 ipa; /* 0x0056 */ 130 __u32 ipb; /* 0x0058 */ 131 __u32 scaoh; /* 0x005c */ 132 __u8 reserved60; /* 0x0060 */ 133 __u8 ecb; /* 0x0061 */ 134 __u8 ecb2; /* 0x0062 */ 135 __u8 reserved63[1]; /* 0x0063 */ 136 __u32 scaol; /* 0x0064 */ 137 __u8 reserved68[4]; /* 0x0068 */ 138 __u32 todpr; /* 0x006c */ 139 __u8 reserved70[32]; /* 0x0070 */ 140 psw_t gpsw; /* 0x0090 */ 141 __u64 gg14; /* 0x00a0 */ 142 __u64 gg15; /* 0x00a8 */ 143 __u8 reservedb0[20]; /* 0x00b0 */ 144 __u16 extcpuaddr; /* 0x00c4 */ 145 __u16 eic; /* 0x00c6 */ 146 __u32 reservedc8; /* 0x00c8 */ 147 __u16 pgmilc; /* 0x00cc */ 148 __u16 iprcc; /* 0x00ce */ 149 __u32 dxc; /* 0x00d0 */ 150 __u16 mcn; /* 0x00d4 */ 151 __u8 perc; /* 0x00d6 */ 152 __u8 peratmid; /* 0x00d7 */ 153 __u64 peraddr; /* 0x00d8 */ 154 __u8 eai; /* 0x00e0 */ 155 __u8 peraid; /* 0x00e1 */ 156 __u8 oai; /* 0x00e2 */ 157 __u8 armid; /* 0x00e3 */ 158 __u8 reservede4[4]; /* 0x00e4 */ 159 __u64 tecmc; /* 0x00e8 */ 160 __u8 reservedf0[12]; /* 0x00f0 */ 161 #define CRYCB_FORMAT1 0x00000001 162 __u32 crycbd; /* 0x00fc */ 163 __u64 gcr[16]; /* 0x0100 */ 164 __u64 gbea; /* 0x0180 */ 165 __u8 reserved188[24]; /* 0x0188 */ 166 __u32 fac; /* 0x01a0 */ 167 __u8 reserved1a4[20]; /* 0x01a4 */ 168 __u64 cbrlo; /* 0x01b8 */ 169 __u8 reserved1c0[30]; /* 0x01c0 */ 170 __u64 pp; /* 0x01de */ 171 __u8 reserved1e6[2]; /* 0x01e6 */ 172 __u64 itdba; /* 0x01e8 */ 173 __u8 reserved1f0[16]; /* 0x01f0 */ 174 } __attribute__((packed)); 175 176 struct kvm_s390_itdb { 177 __u8 data[256]; 178 } __packed; 179 180 struct sie_page { 181 struct kvm_s390_sie_block sie_block; 182 __u8 reserved200[1024]; /* 0x0200 */ 183 struct kvm_s390_itdb itdb; /* 0x0600 */ 184 __u8 reserved700[2304]; /* 0x0700 */ 185 } __packed; 186 187 struct kvm_vcpu_stat { 188 u32 exit_userspace; 189 u32 exit_null; 190 u32 exit_external_request; 191 u32 exit_external_interrupt; 192 u32 exit_stop_request; 193 u32 exit_validity; 194 u32 exit_instruction; 195 u32 halt_wakeup; 196 u32 instruction_lctl; 197 u32 instruction_lctlg; 198 u32 instruction_stctl; 199 u32 instruction_stctg; 200 u32 exit_program_interruption; 201 u32 exit_instr_and_program; 202 u32 deliver_external_call; 203 u32 deliver_emergency_signal; 204 u32 deliver_service_signal; 205 u32 deliver_virtio_interrupt; 206 u32 deliver_stop_signal; 207 u32 deliver_prefix_signal; 208 u32 deliver_restart_signal; 209 u32 deliver_program_int; 210 u32 deliver_io_int; 211 u32 exit_wait_state; 212 u32 instruction_pfmf; 213 u32 instruction_stidp; 214 u32 instruction_spx; 215 u32 instruction_stpx; 216 u32 instruction_stap; 217 u32 instruction_storage_key; 218 u32 instruction_ipte_interlock; 219 u32 instruction_stsch; 220 u32 instruction_chsc; 221 u32 instruction_stsi; 222 u32 instruction_stfl; 223 u32 instruction_tprot; 224 u32 instruction_essa; 225 u32 instruction_sigp_sense; 226 u32 instruction_sigp_sense_running; 227 u32 instruction_sigp_external_call; 228 u32 instruction_sigp_emergency; 229 u32 instruction_sigp_cond_emergency; 230 u32 instruction_sigp_start; 231 u32 instruction_sigp_stop; 232 u32 instruction_sigp_stop_store_status; 233 u32 instruction_sigp_store_status; 234 u32 instruction_sigp_arch; 235 u32 instruction_sigp_prefix; 236 u32 instruction_sigp_restart; 237 u32 instruction_sigp_init_cpu_reset; 238 u32 instruction_sigp_cpu_reset; 239 u32 instruction_sigp_unknown; 240 u32 diagnose_10; 241 u32 diagnose_44; 242 u32 diagnose_9c; 243 }; 244 245 #define PGM_OPERATION 0x01 246 #define PGM_PRIVILEGED_OP 0x02 247 #define PGM_EXECUTE 0x03 248 #define PGM_PROTECTION 0x04 249 #define PGM_ADDRESSING 0x05 250 #define PGM_SPECIFICATION 0x06 251 #define PGM_DATA 0x07 252 #define PGM_FIXED_POINT_OVERFLOW 0x08 253 #define PGM_FIXED_POINT_DIVIDE 0x09 254 #define PGM_DECIMAL_OVERFLOW 0x0a 255 #define PGM_DECIMAL_DIVIDE 0x0b 256 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c 257 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d 258 #define PGM_HFP_SIGNIFICANCE 0x0e 259 #define PGM_HFP_DIVIDE 0x0f 260 #define PGM_SEGMENT_TRANSLATION 0x10 261 #define PGM_PAGE_TRANSLATION 0x11 262 #define PGM_TRANSLATION_SPEC 0x12 263 #define PGM_SPECIAL_OPERATION 0x13 264 #define PGM_OPERAND 0x15 265 #define PGM_TRACE_TABEL 0x16 266 #define PGM_SPACE_SWITCH 0x1c 267 #define PGM_HFP_SQUARE_ROOT 0x1d 268 #define PGM_PC_TRANSLATION_SPEC 0x1f 269 #define PGM_AFX_TRANSLATION 0x20 270 #define PGM_ASX_TRANSLATION 0x21 271 #define PGM_LX_TRANSLATION 0x22 272 #define PGM_EX_TRANSLATION 0x23 273 #define PGM_PRIMARY_AUTHORITY 0x24 274 #define PGM_SECONDARY_AUTHORITY 0x25 275 #define PGM_LFX_TRANSLATION 0x26 276 #define PGM_LSX_TRANSLATION 0x27 277 #define PGM_ALET_SPECIFICATION 0x28 278 #define PGM_ALEN_TRANSLATION 0x29 279 #define PGM_ALE_SEQUENCE 0x2a 280 #define PGM_ASTE_VALIDITY 0x2b 281 #define PGM_ASTE_SEQUENCE 0x2c 282 #define PGM_EXTENDED_AUTHORITY 0x2d 283 #define PGM_LSTE_SEQUENCE 0x2e 284 #define PGM_ASTE_INSTANCE 0x2f 285 #define PGM_STACK_FULL 0x30 286 #define PGM_STACK_EMPTY 0x31 287 #define PGM_STACK_SPECIFICATION 0x32 288 #define PGM_STACK_TYPE 0x33 289 #define PGM_STACK_OPERATION 0x34 290 #define PGM_ASCE_TYPE 0x38 291 #define PGM_REGION_FIRST_TRANS 0x39 292 #define PGM_REGION_SECOND_TRANS 0x3a 293 #define PGM_REGION_THIRD_TRANS 0x3b 294 #define PGM_MONITOR 0x40 295 #define PGM_PER 0x80 296 #define PGM_CRYPTO_OPERATION 0x119 297 298 /* irq types in order of priority */ 299 enum irq_types { 300 IRQ_PEND_MCHK_EX = 0, 301 IRQ_PEND_SVC, 302 IRQ_PEND_PROG, 303 IRQ_PEND_MCHK_REP, 304 IRQ_PEND_EXT_IRQ_KEY, 305 IRQ_PEND_EXT_MALFUNC, 306 IRQ_PEND_EXT_EMERGENCY, 307 IRQ_PEND_EXT_EXTERNAL, 308 IRQ_PEND_EXT_CLOCK_COMP, 309 IRQ_PEND_EXT_CPU_TIMER, 310 IRQ_PEND_EXT_TIMING, 311 IRQ_PEND_EXT_SERVICE, 312 IRQ_PEND_EXT_HOST, 313 IRQ_PEND_PFAULT_INIT, 314 IRQ_PEND_PFAULT_DONE, 315 IRQ_PEND_VIRTIO, 316 IRQ_PEND_IO_ISC_0, 317 IRQ_PEND_IO_ISC_1, 318 IRQ_PEND_IO_ISC_2, 319 IRQ_PEND_IO_ISC_3, 320 IRQ_PEND_IO_ISC_4, 321 IRQ_PEND_IO_ISC_5, 322 IRQ_PEND_IO_ISC_6, 323 IRQ_PEND_IO_ISC_7, 324 IRQ_PEND_SIGP_STOP, 325 IRQ_PEND_RESTART, 326 IRQ_PEND_SET_PREFIX, 327 IRQ_PEND_COUNT 328 }; 329 330 /* 331 * Repressible (non-floating) machine check interrupts 332 * subclass bits in MCIC 333 */ 334 #define MCHK_EXTD_BIT 58 335 #define MCHK_DEGR_BIT 56 336 #define MCHK_WARN_BIT 55 337 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \ 338 (1UL << MCHK_EXTD_BIT) | \ 339 (1UL << MCHK_WARN_BIT)) 340 341 /* Exigent machine check interrupts subclass bits in MCIC */ 342 #define MCHK_SD_BIT 63 343 #define MCHK_PD_BIT 62 344 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT)) 345 346 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \ 347 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \ 348 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \ 349 (1UL << IRQ_PEND_EXT_MALFUNC) | \ 350 (1UL << IRQ_PEND_EXT_EMERGENCY) | \ 351 (1UL << IRQ_PEND_EXT_EXTERNAL) | \ 352 (1UL << IRQ_PEND_EXT_TIMING) | \ 353 (1UL << IRQ_PEND_EXT_HOST) | \ 354 (1UL << IRQ_PEND_EXT_SERVICE) | \ 355 (1UL << IRQ_PEND_VIRTIO) | \ 356 (1UL << IRQ_PEND_PFAULT_INIT) | \ 357 (1UL << IRQ_PEND_PFAULT_DONE)) 358 359 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \ 360 (1UL << IRQ_PEND_IO_ISC_1) | \ 361 (1UL << IRQ_PEND_IO_ISC_2) | \ 362 (1UL << IRQ_PEND_IO_ISC_3) | \ 363 (1UL << IRQ_PEND_IO_ISC_4) | \ 364 (1UL << IRQ_PEND_IO_ISC_5) | \ 365 (1UL << IRQ_PEND_IO_ISC_6) | \ 366 (1UL << IRQ_PEND_IO_ISC_7)) 367 368 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \ 369 (1UL << IRQ_PEND_MCHK_EX)) 370 371 struct kvm_s390_interrupt_info { 372 struct list_head list; 373 u64 type; 374 union { 375 struct kvm_s390_io_info io; 376 struct kvm_s390_ext_info ext; 377 struct kvm_s390_pgm_info pgm; 378 struct kvm_s390_emerg_info emerg; 379 struct kvm_s390_extcall_info extcall; 380 struct kvm_s390_prefix_info prefix; 381 struct kvm_s390_mchk_info mchk; 382 }; 383 }; 384 385 /* for local_interrupt.action_flags */ 386 #define ACTION_STORE_ON_STOP (1<<0) 387 #define ACTION_STOP_ON_STOP (1<<1) 388 389 struct kvm_s390_irq_payload { 390 struct kvm_s390_io_info io; 391 struct kvm_s390_ext_info ext; 392 struct kvm_s390_pgm_info pgm; 393 struct kvm_s390_emerg_info emerg; 394 struct kvm_s390_extcall_info extcall; 395 struct kvm_s390_prefix_info prefix; 396 struct kvm_s390_mchk_info mchk; 397 }; 398 399 struct kvm_s390_local_interrupt { 400 spinlock_t lock; 401 struct kvm_s390_float_interrupt *float_int; 402 wait_queue_head_t *wq; 403 atomic_t *cpuflags; 404 unsigned int action_bits; 405 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS); 406 struct kvm_s390_irq_payload irq; 407 unsigned long pending_irqs; 408 }; 409 410 struct kvm_s390_float_interrupt { 411 spinlock_t lock; 412 struct list_head list; 413 atomic_t active; 414 int next_rr_cpu; 415 unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)]; 416 unsigned int irq_count; 417 }; 418 419 struct kvm_hw_wp_info_arch { 420 unsigned long addr; 421 unsigned long phys_addr; 422 int len; 423 char *old_data; 424 }; 425 426 struct kvm_hw_bp_info_arch { 427 unsigned long addr; 428 int len; 429 }; 430 431 /* 432 * Only the upper 16 bits of kvm_guest_debug->control are arch specific. 433 * Further KVM_GUESTDBG flags which an be used from userspace can be found in 434 * arch/s390/include/uapi/asm/kvm.h 435 */ 436 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000 437 438 #define guestdbg_enabled(vcpu) \ 439 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) 440 #define guestdbg_sstep_enabled(vcpu) \ 441 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) 442 #define guestdbg_hw_bp_enabled(vcpu) \ 443 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) 444 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \ 445 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING)) 446 447 struct kvm_guestdbg_info_arch { 448 unsigned long cr0; 449 unsigned long cr9; 450 unsigned long cr10; 451 unsigned long cr11; 452 struct kvm_hw_bp_info_arch *hw_bp_info; 453 struct kvm_hw_wp_info_arch *hw_wp_info; 454 int nr_hw_bp; 455 int nr_hw_wp; 456 unsigned long last_bp; 457 }; 458 459 struct kvm_vcpu_arch { 460 struct kvm_s390_sie_block *sie_block; 461 s390_fp_regs host_fpregs; 462 unsigned int host_acrs[NUM_ACRS]; 463 s390_fp_regs guest_fpregs; 464 struct kvm_s390_local_interrupt local_int; 465 struct hrtimer ckc_timer; 466 struct kvm_s390_pgm_info pgm; 467 union { 468 struct cpuid cpu_id; 469 u64 stidp_data; 470 }; 471 struct gmap *gmap; 472 struct kvm_guestdbg_info_arch guestdbg; 473 #define KVM_S390_PFAULT_TOKEN_INVALID (-1UL) 474 unsigned long pfault_token; 475 unsigned long pfault_select; 476 unsigned long pfault_compare; 477 }; 478 479 struct kvm_vm_stat { 480 u32 remote_tlb_flush; 481 }; 482 483 struct kvm_arch_memory_slot { 484 }; 485 486 struct s390_map_info { 487 struct list_head list; 488 __u64 guest_addr; 489 __u64 addr; 490 struct page *page; 491 }; 492 493 struct s390_io_adapter { 494 unsigned int id; 495 int isc; 496 bool maskable; 497 bool masked; 498 bool swap; 499 struct rw_semaphore maps_lock; 500 struct list_head maps; 501 atomic_t nr_maps; 502 }; 503 504 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8) 505 #define MAX_S390_ADAPTER_MAPS 256 506 507 struct kvm_s390_crypto { 508 struct kvm_s390_crypto_cb *crycb; 509 __u32 crycbd; 510 }; 511 512 struct kvm_s390_crypto_cb { 513 __u8 reserved00[128]; /* 0x0000 */ 514 }; 515 516 struct kvm_arch{ 517 struct sca_block *sca; 518 debug_info_t *dbf; 519 struct kvm_s390_float_interrupt float_int; 520 struct kvm_device *flic; 521 struct gmap *gmap; 522 int css_support; 523 int use_irqchip; 524 int use_cmma; 525 int user_cpu_state_ctrl; 526 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS]; 527 wait_queue_head_t ipte_wq; 528 int ipte_lock_count; 529 struct mutex ipte_mutex; 530 spinlock_t start_stop_lock; 531 struct kvm_s390_crypto crypto; 532 }; 533 534 #define KVM_HVA_ERR_BAD (-1UL) 535 #define KVM_HVA_ERR_RO_BAD (-2UL) 536 537 static inline bool kvm_is_error_hva(unsigned long addr) 538 { 539 return IS_ERR_VALUE(addr); 540 } 541 542 #define ASYNC_PF_PER_VCPU 64 543 struct kvm_arch_async_pf { 544 unsigned long pfault_token; 545 }; 546 547 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu); 548 549 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, 550 struct kvm_async_pf *work); 551 552 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, 553 struct kvm_async_pf *work); 554 555 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, 556 struct kvm_async_pf *work); 557 558 extern int sie64a(struct kvm_s390_sie_block *, u64 *); 559 extern char sie_exit; 560 561 static inline void kvm_arch_hardware_disable(void) {} 562 static inline void kvm_arch_check_processor_compat(void *rtn) {} 563 static inline void kvm_arch_exit(void) {} 564 static inline void kvm_arch_sync_events(struct kvm *kvm) {} 565 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {} 566 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} 567 static inline void kvm_arch_free_memslot(struct kvm *kvm, 568 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {} 569 static inline void kvm_arch_memslots_updated(struct kvm *kvm) {} 570 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} 571 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm, 572 struct kvm_memory_slot *slot) {} 573 574 #endif 575