2 * definition for kernel virtual machines on s390
4 * Copyright IBM Corp. 2008, 2009
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.
10 * Author(s): Carsten Otte <cotte@de.ibm.com>
14 #ifndef ASM_KVM_HOST_H
15 #define ASM_KVM_HOST_H
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>
25 #include <asm/fpu/api.h>
28 #define KVM_S390_BSCA_CPU_SLOTS 64
29 #define KVM_S390_ESCA_CPU_SLOTS 248
30 #define KVM_MAX_VCPUS KVM_S390_ESCA_CPU_SLOTS
31 #define KVM_USER_MEM_SLOTS 32
34 * These seem to be used for allocating ->chip in the routing table,
35 * which we don't use. 4096 is an out-of-thin-air value. If we need
36 * to look at ->chip later on, we'll need to revisit this.
38 #define KVM_NR_IRQCHIPS 1
39 #define KVM_IRQCHIP_NUM_PINS 4096
40 #define KVM_HALT_POLL_NS_DEFAULT 0
42 /* s390-specific vcpu->requests bit members */
43 #define KVM_REQ_ENABLE_IBS 8
44 #define KVM_REQ_DISABLE_IBS 9
46 #define SIGP_CTRL_C 0x80
47 #define SIGP_CTRL_SCN_MASK 0x3f
49 union bsca_sigp_ctrl {
58 union esca_sigp_ctrl {
68 union esca_sigp_ctrl sigp_ctrl;
76 union bsca_sigp_ctrl sigp_ctrl;
80 } __attribute__((packed));
86 unsigned long kh : 31;
87 unsigned long kg : 32;
92 union ipte_control ipte_control;
96 struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
97 } __attribute__((packed));
100 union ipte_control ipte_control;
104 struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
107 #define CPUSTAT_STOPPED 0x80000000
108 #define CPUSTAT_WAIT 0x10000000
109 #define CPUSTAT_ECALL_PEND 0x08000000
110 #define CPUSTAT_STOP_INT 0x04000000
111 #define CPUSTAT_IO_INT 0x02000000
112 #define CPUSTAT_EXT_INT 0x01000000
113 #define CPUSTAT_RUNNING 0x00800000
114 #define CPUSTAT_RETAINED 0x00400000
115 #define CPUSTAT_TIMING_SUB 0x00020000
116 #define CPUSTAT_SIE_SUB 0x00010000
117 #define CPUSTAT_RRF 0x00008000
118 #define CPUSTAT_SLSV 0x00004000
119 #define CPUSTAT_SLSR 0x00002000
120 #define CPUSTAT_ZARCH 0x00000800
121 #define CPUSTAT_MCDS 0x00000100
122 #define CPUSTAT_SM 0x00000080
123 #define CPUSTAT_IBS 0x00000040
124 #define CPUSTAT_GED2 0x00000010
125 #define CPUSTAT_G 0x00000008
126 #define CPUSTAT_GED 0x00000004
127 #define CPUSTAT_J 0x00000002
128 #define CPUSTAT_P 0x00000001
130 struct kvm_s390_sie_block {
131 atomic_t cpuflags; /* 0x0000 */
132 __u32 : 1; /* 0x0004 */
136 __u8 reserved08[4]; /* 0x0008 */
137 #define PROG_IN_SIE (1<<0)
138 __u32 prog0c; /* 0x000c */
139 __u8 reserved10[16]; /* 0x0010 */
140 #define PROG_BLOCK_SIE (1<<0)
141 #define PROG_REQUEST (1<<1)
142 atomic_t prog20; /* 0x0020 */
143 __u8 reserved24[4]; /* 0x0024 */
144 __u64 cputm; /* 0x0028 */
145 __u64 ckc; /* 0x0030 */
146 __u64 epoch; /* 0x0038 */
147 __u8 reserved40[4]; /* 0x0040 */
148 #define LCTL_CR0 0x8000
149 #define LCTL_CR6 0x0200
150 #define LCTL_CR9 0x0040
151 #define LCTL_CR10 0x0020
152 #define LCTL_CR11 0x0010
153 #define LCTL_CR14 0x0002
154 __u16 lctl; /* 0x0044 */
155 __s16 icpua; /* 0x0046 */
156 #define ICTL_PINT 0x20000000
157 #define ICTL_LPSW 0x00400000
158 #define ICTL_STCTL 0x00040000
159 #define ICTL_ISKE 0x00004000
160 #define ICTL_SSKE 0x00002000
161 #define ICTL_RRBE 0x00001000
162 #define ICTL_TPROT 0x00000200
163 __u32 ictl; /* 0x0048 */
164 __u32 eca; /* 0x004c */
165 #define ICPT_INST 0x04
166 #define ICPT_PROGI 0x08
167 #define ICPT_INSTPROGI 0x0C
168 #define ICPT_OPEREXC 0x2C
169 #define ICPT_PARTEXEC 0x38
170 #define ICPT_IOINST 0x40
171 __u8 icptcode; /* 0x0050 */
172 __u8 icptstatus; /* 0x0051 */
173 __u16 ihcpu; /* 0x0052 */
174 __u8 reserved54[2]; /* 0x0054 */
175 __u16 ipa; /* 0x0056 */
176 __u32 ipb; /* 0x0058 */
177 __u32 scaoh; /* 0x005c */
178 __u8 reserved60; /* 0x0060 */
179 __u8 ecb; /* 0x0061 */
180 __u8 ecb2; /* 0x0062 */
181 #define ECB3_AES 0x04
182 #define ECB3_DEA 0x08
183 __u8 ecb3; /* 0x0063 */
184 __u32 scaol; /* 0x0064 */
185 __u8 reserved68[4]; /* 0x0068 */
186 __u32 todpr; /* 0x006c */
187 __u8 reserved70[32]; /* 0x0070 */
188 psw_t gpsw; /* 0x0090 */
189 __u64 gg14; /* 0x00a0 */
190 __u64 gg15; /* 0x00a8 */
191 __u8 reservedb0[20]; /* 0x00b0 */
192 __u16 extcpuaddr; /* 0x00c4 */
193 __u16 eic; /* 0x00c6 */
194 __u32 reservedc8; /* 0x00c8 */
195 __u16 pgmilc; /* 0x00cc */
196 __u16 iprcc; /* 0x00ce */
197 __u32 dxc; /* 0x00d0 */
198 __u16 mcn; /* 0x00d4 */
199 __u8 perc; /* 0x00d6 */
200 __u8 peratmid; /* 0x00d7 */
201 __u64 peraddr; /* 0x00d8 */
202 __u8 eai; /* 0x00e0 */
203 __u8 peraid; /* 0x00e1 */
204 __u8 oai; /* 0x00e2 */
205 __u8 armid; /* 0x00e3 */
206 __u8 reservede4[4]; /* 0x00e4 */
207 __u64 tecmc; /* 0x00e8 */
208 __u8 reservedf0[12]; /* 0x00f0 */
209 #define CRYCB_FORMAT1 0x00000001
210 #define CRYCB_FORMAT2 0x00000003
211 __u32 crycbd; /* 0x00fc */
212 __u64 gcr[16]; /* 0x0100 */
213 __u64 gbea; /* 0x0180 */
214 __u8 reserved188[24]; /* 0x0188 */
215 __u32 fac; /* 0x01a0 */
216 __u8 reserved1a4[20]; /* 0x01a4 */
217 __u64 cbrlo; /* 0x01b8 */
218 __u8 reserved1c0[8]; /* 0x01c0 */
219 __u32 ecd; /* 0x01c8 */
220 __u8 reserved1cc[18]; /* 0x01cc */
221 __u64 pp; /* 0x01de */
222 __u8 reserved1e6[2]; /* 0x01e6 */
223 __u64 itdba; /* 0x01e8 */
224 __u64 riccbd; /* 0x01f0 */
225 __u8 reserved1f8[8]; /* 0x01f8 */
226 } __attribute__((packed));
228 struct kvm_s390_itdb {
232 struct kvm_s390_vregs {
234 __u8 reserved200[512]; /* for future vector expansion */
238 struct kvm_s390_sie_block sie_block;
239 __u8 reserved200[1024]; /* 0x0200 */
240 struct kvm_s390_itdb itdb; /* 0x0600 */
241 __u8 reserved700[1280]; /* 0x0700 */
242 struct kvm_s390_vregs vregs; /* 0x0c00 */
245 struct kvm_vcpu_stat {
248 u32 exit_external_request;
249 u32 exit_external_interrupt;
250 u32 exit_stop_request;
252 u32 exit_instruction;
253 u32 halt_successful_poll;
254 u32 halt_attempted_poll;
256 u32 instruction_lctl;
257 u32 instruction_lctlg;
258 u32 instruction_stctl;
259 u32 instruction_stctg;
260 u32 exit_program_interruption;
261 u32 exit_instr_and_program;
262 u32 deliver_external_call;
263 u32 deliver_emergency_signal;
264 u32 deliver_service_signal;
265 u32 deliver_virtio_interrupt;
266 u32 deliver_stop_signal;
267 u32 deliver_prefix_signal;
268 u32 deliver_restart_signal;
269 u32 deliver_program_int;
272 u32 instruction_pfmf;
273 u32 instruction_stidp;
275 u32 instruction_stpx;
276 u32 instruction_stap;
277 u32 instruction_storage_key;
278 u32 instruction_ipte_interlock;
279 u32 instruction_stsch;
280 u32 instruction_chsc;
281 u32 instruction_stsi;
282 u32 instruction_stfl;
283 u32 instruction_tprot;
284 u32 instruction_essa;
285 u32 instruction_sigp_sense;
286 u32 instruction_sigp_sense_running;
287 u32 instruction_sigp_external_call;
288 u32 instruction_sigp_emergency;
289 u32 instruction_sigp_cond_emergency;
290 u32 instruction_sigp_start;
291 u32 instruction_sigp_stop;
292 u32 instruction_sigp_stop_store_status;
293 u32 instruction_sigp_store_status;
294 u32 instruction_sigp_store_adtl_status;
295 u32 instruction_sigp_arch;
296 u32 instruction_sigp_prefix;
297 u32 instruction_sigp_restart;
298 u32 instruction_sigp_init_cpu_reset;
299 u32 instruction_sigp_cpu_reset;
300 u32 instruction_sigp_unknown;
309 #define PGM_OPERATION 0x01
310 #define PGM_PRIVILEGED_OP 0x02
311 #define PGM_EXECUTE 0x03
312 #define PGM_PROTECTION 0x04
313 #define PGM_ADDRESSING 0x05
314 #define PGM_SPECIFICATION 0x06
315 #define PGM_DATA 0x07
316 #define PGM_FIXED_POINT_OVERFLOW 0x08
317 #define PGM_FIXED_POINT_DIVIDE 0x09
318 #define PGM_DECIMAL_OVERFLOW 0x0a
319 #define PGM_DECIMAL_DIVIDE 0x0b
320 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c
321 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d
322 #define PGM_HFP_SIGNIFICANCE 0x0e
323 #define PGM_HFP_DIVIDE 0x0f
324 #define PGM_SEGMENT_TRANSLATION 0x10
325 #define PGM_PAGE_TRANSLATION 0x11
326 #define PGM_TRANSLATION_SPEC 0x12
327 #define PGM_SPECIAL_OPERATION 0x13
328 #define PGM_OPERAND 0x15
329 #define PGM_TRACE_TABEL 0x16
330 #define PGM_VECTOR_PROCESSING 0x1b
331 #define PGM_SPACE_SWITCH 0x1c
332 #define PGM_HFP_SQUARE_ROOT 0x1d
333 #define PGM_PC_TRANSLATION_SPEC 0x1f
334 #define PGM_AFX_TRANSLATION 0x20
335 #define PGM_ASX_TRANSLATION 0x21
336 #define PGM_LX_TRANSLATION 0x22
337 #define PGM_EX_TRANSLATION 0x23
338 #define PGM_PRIMARY_AUTHORITY 0x24
339 #define PGM_SECONDARY_AUTHORITY 0x25
340 #define PGM_LFX_TRANSLATION 0x26
341 #define PGM_LSX_TRANSLATION 0x27
342 #define PGM_ALET_SPECIFICATION 0x28
343 #define PGM_ALEN_TRANSLATION 0x29
344 #define PGM_ALE_SEQUENCE 0x2a
345 #define PGM_ASTE_VALIDITY 0x2b
346 #define PGM_ASTE_SEQUENCE 0x2c
347 #define PGM_EXTENDED_AUTHORITY 0x2d
348 #define PGM_LSTE_SEQUENCE 0x2e
349 #define PGM_ASTE_INSTANCE 0x2f
350 #define PGM_STACK_FULL 0x30
351 #define PGM_STACK_EMPTY 0x31
352 #define PGM_STACK_SPECIFICATION 0x32
353 #define PGM_STACK_TYPE 0x33
354 #define PGM_STACK_OPERATION 0x34
355 #define PGM_ASCE_TYPE 0x38
356 #define PGM_REGION_FIRST_TRANS 0x39
357 #define PGM_REGION_SECOND_TRANS 0x3a
358 #define PGM_REGION_THIRD_TRANS 0x3b
359 #define PGM_MONITOR 0x40
361 #define PGM_CRYPTO_OPERATION 0x119
363 /* irq types in order of priority */
365 IRQ_PEND_MCHK_EX = 0,
369 IRQ_PEND_EXT_IRQ_KEY,
370 IRQ_PEND_EXT_MALFUNC,
371 IRQ_PEND_EXT_EMERGENCY,
372 IRQ_PEND_EXT_EXTERNAL,
373 IRQ_PEND_EXT_CLOCK_COMP,
374 IRQ_PEND_EXT_CPU_TIMER,
376 IRQ_PEND_EXT_SERVICE,
378 IRQ_PEND_PFAULT_INIT,
379 IRQ_PEND_PFAULT_DONE,
395 /* We have 2M for virtio device descriptor pages. Smallest amount of
396 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
398 #define KVM_S390_MAX_VIRTIO_IRQS 87381
401 * Repressible (non-floating) machine check interrupts
402 * subclass bits in MCIC
404 #define MCHK_EXTD_BIT 58
405 #define MCHK_DEGR_BIT 56
406 #define MCHK_WARN_BIT 55
407 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
408 (1UL << MCHK_EXTD_BIT) | \
409 (1UL << MCHK_WARN_BIT))
411 /* Exigent machine check interrupts subclass bits in MCIC */
412 #define MCHK_SD_BIT 63
413 #define MCHK_PD_BIT 62
414 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
416 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \
417 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
418 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \
419 (1UL << IRQ_PEND_EXT_MALFUNC) | \
420 (1UL << IRQ_PEND_EXT_EMERGENCY) | \
421 (1UL << IRQ_PEND_EXT_EXTERNAL) | \
422 (1UL << IRQ_PEND_EXT_TIMING) | \
423 (1UL << IRQ_PEND_EXT_HOST) | \
424 (1UL << IRQ_PEND_EXT_SERVICE) | \
425 (1UL << IRQ_PEND_VIRTIO) | \
426 (1UL << IRQ_PEND_PFAULT_INIT) | \
427 (1UL << IRQ_PEND_PFAULT_DONE))
429 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
430 (1UL << IRQ_PEND_IO_ISC_1) | \
431 (1UL << IRQ_PEND_IO_ISC_2) | \
432 (1UL << IRQ_PEND_IO_ISC_3) | \
433 (1UL << IRQ_PEND_IO_ISC_4) | \
434 (1UL << IRQ_PEND_IO_ISC_5) | \
435 (1UL << IRQ_PEND_IO_ISC_6) | \
436 (1UL << IRQ_PEND_IO_ISC_7))
438 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
439 (1UL << IRQ_PEND_MCHK_EX))
441 struct kvm_s390_interrupt_info {
442 struct list_head list;
445 struct kvm_s390_io_info io;
446 struct kvm_s390_ext_info ext;
447 struct kvm_s390_pgm_info pgm;
448 struct kvm_s390_emerg_info emerg;
449 struct kvm_s390_extcall_info extcall;
450 struct kvm_s390_prefix_info prefix;
451 struct kvm_s390_stop_info stop;
452 struct kvm_s390_mchk_info mchk;
456 struct kvm_s390_irq_payload {
457 struct kvm_s390_io_info io;
458 struct kvm_s390_ext_info ext;
459 struct kvm_s390_pgm_info pgm;
460 struct kvm_s390_emerg_info emerg;
461 struct kvm_s390_extcall_info extcall;
462 struct kvm_s390_prefix_info prefix;
463 struct kvm_s390_stop_info stop;
464 struct kvm_s390_mchk_info mchk;
467 struct kvm_s390_local_interrupt {
469 struct kvm_s390_float_interrupt *float_int;
470 wait_queue_head_t *wq;
472 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
473 struct kvm_s390_irq_payload irq;
474 unsigned long pending_irqs;
477 #define FIRQ_LIST_IO_ISC_0 0
478 #define FIRQ_LIST_IO_ISC_1 1
479 #define FIRQ_LIST_IO_ISC_2 2
480 #define FIRQ_LIST_IO_ISC_3 3
481 #define FIRQ_LIST_IO_ISC_4 4
482 #define FIRQ_LIST_IO_ISC_5 5
483 #define FIRQ_LIST_IO_ISC_6 6
484 #define FIRQ_LIST_IO_ISC_7 7
485 #define FIRQ_LIST_PFAULT 8
486 #define FIRQ_LIST_VIRTIO 9
487 #define FIRQ_LIST_COUNT 10
488 #define FIRQ_CNTR_IO 0
489 #define FIRQ_CNTR_SERVICE 1
490 #define FIRQ_CNTR_VIRTIO 2
491 #define FIRQ_CNTR_PFAULT 3
492 #define FIRQ_MAX_COUNT 4
494 struct kvm_s390_float_interrupt {
495 unsigned long pending_irqs;
497 struct list_head lists[FIRQ_LIST_COUNT];
498 int counters[FIRQ_MAX_COUNT];
499 struct kvm_s390_mchk_info mchk;
500 struct kvm_s390_ext_info srv_signal;
502 unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
505 struct kvm_hw_wp_info_arch {
507 unsigned long phys_addr;
512 struct kvm_hw_bp_info_arch {
518 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
519 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
520 * arch/s390/include/uapi/asm/kvm.h
522 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
524 #define guestdbg_enabled(vcpu) \
525 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
526 #define guestdbg_sstep_enabled(vcpu) \
527 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
528 #define guestdbg_hw_bp_enabled(vcpu) \
529 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
530 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
531 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
533 struct kvm_guestdbg_info_arch {
538 struct kvm_hw_bp_info_arch *hw_bp_info;
539 struct kvm_hw_wp_info_arch *hw_wp_info;
542 unsigned long last_bp;
545 struct kvm_vcpu_arch {
546 struct kvm_s390_sie_block *sie_block;
547 unsigned int host_acrs[NUM_ACRS];
548 struct fpu host_fpregs;
549 struct fpu guest_fpregs;
550 struct kvm_s390_local_interrupt local_int;
551 struct hrtimer ckc_timer;
552 struct kvm_s390_pgm_info pgm;
558 struct kvm_guestdbg_info_arch guestdbg;
559 unsigned long pfault_token;
560 unsigned long pfault_select;
561 unsigned long pfault_compare;
565 u32 remote_tlb_flush;
568 struct kvm_arch_memory_slot {
571 struct s390_map_info {
572 struct list_head list;
578 struct s390_io_adapter {
584 struct rw_semaphore maps_lock;
585 struct list_head maps;
589 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
590 #define MAX_S390_ADAPTER_MAPS 256
592 /* maximum size of facilities and facility mask is 2k bytes */
593 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
594 #define S390_ARCH_FAC_LIST_SIZE_U64 \
595 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
596 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
597 #define S390_ARCH_FAC_MASK_SIZE_U64 \
598 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
600 struct kvm_s390_fac {
601 /* facility list requested by guest */
602 __u64 list[S390_ARCH_FAC_LIST_SIZE_U64];
603 /* facility mask supported by kvm & hosting machine */
604 __u64 mask[S390_ARCH_FAC_LIST_SIZE_U64];
607 struct kvm_s390_cpu_model {
608 struct kvm_s390_fac *fac;
613 struct kvm_s390_crypto {
614 struct kvm_s390_crypto_cb *crycb;
620 struct kvm_s390_crypto_cb {
621 __u8 reserved00[72]; /* 0x0000 */
622 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */
623 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */
624 __u8 reserved80[128]; /* 0x0080 */
632 struct kvm_s390_float_interrupt float_int;
633 struct kvm_device *flic;
635 unsigned long mem_limit;
639 int user_cpu_state_ctrl;
642 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
643 wait_queue_head_t ipte_wq;
645 struct mutex ipte_mutex;
646 spinlock_t start_stop_lock;
647 struct kvm_s390_cpu_model model;
648 struct kvm_s390_crypto crypto;
652 #define KVM_HVA_ERR_BAD (-1UL)
653 #define KVM_HVA_ERR_RO_BAD (-2UL)
655 static inline bool kvm_is_error_hva(unsigned long addr)
657 return IS_ERR_VALUE(addr);
660 #define ASYNC_PF_PER_VCPU 64
661 struct kvm_arch_async_pf {
662 unsigned long pfault_token;
665 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
667 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
668 struct kvm_async_pf *work);
670 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
671 struct kvm_async_pf *work);
673 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
674 struct kvm_async_pf *work);
676 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
677 extern char sie_exit;
679 static inline void kvm_arch_hardware_disable(void) {}
680 static inline void kvm_arch_check_processor_compat(void *rtn) {}
681 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
682 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
683 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
684 static inline void kvm_arch_free_memslot(struct kvm *kvm,
685 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
686 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
687 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
688 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
689 struct kvm_memory_slot *slot) {}
690 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
691 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}