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 <linux/seqlock.h>
24 #include <asm/debug.h>
26 #include <asm/fpu/api.h>
29 #define KVM_S390_BSCA_CPU_SLOTS 64
30 #define KVM_S390_ESCA_CPU_SLOTS 248
31 #define KVM_MAX_VCPUS KVM_S390_ESCA_CPU_SLOTS
32 #define KVM_USER_MEM_SLOTS 32
35 * These seem to be used for allocating ->chip in the routing table,
36 * which we don't use. 4096 is an out-of-thin-air value. If we need
37 * to look at ->chip later on, we'll need to revisit this.
39 #define KVM_NR_IRQCHIPS 1
40 #define KVM_IRQCHIP_NUM_PINS 4096
41 #define KVM_HALT_POLL_NS_DEFAULT 80000
43 /* s390-specific vcpu->requests bit members */
44 #define KVM_REQ_ENABLE_IBS 8
45 #define KVM_REQ_DISABLE_IBS 9
47 #define SIGP_CTRL_C 0x80
48 #define SIGP_CTRL_SCN_MASK 0x3f
50 union bsca_sigp_ctrl {
59 union esca_sigp_ctrl {
69 union esca_sigp_ctrl sigp_ctrl;
77 union bsca_sigp_ctrl sigp_ctrl;
81 } __attribute__((packed));
87 unsigned long kh : 31;
88 unsigned long kg : 32;
93 union ipte_control ipte_control;
97 struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
98 } __attribute__((packed));
101 union ipte_control ipte_control;
105 struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
108 #define CPUSTAT_STOPPED 0x80000000
109 #define CPUSTAT_WAIT 0x10000000
110 #define CPUSTAT_ECALL_PEND 0x08000000
111 #define CPUSTAT_STOP_INT 0x04000000
112 #define CPUSTAT_IO_INT 0x02000000
113 #define CPUSTAT_EXT_INT 0x01000000
114 #define CPUSTAT_RUNNING 0x00800000
115 #define CPUSTAT_RETAINED 0x00400000
116 #define CPUSTAT_TIMING_SUB 0x00020000
117 #define CPUSTAT_SIE_SUB 0x00010000
118 #define CPUSTAT_RRF 0x00008000
119 #define CPUSTAT_SLSV 0x00004000
120 #define CPUSTAT_SLSR 0x00002000
121 #define CPUSTAT_ZARCH 0x00000800
122 #define CPUSTAT_MCDS 0x00000100
123 #define CPUSTAT_SM 0x00000080
124 #define CPUSTAT_IBS 0x00000040
125 #define CPUSTAT_GED2 0x00000010
126 #define CPUSTAT_G 0x00000008
127 #define CPUSTAT_GED 0x00000004
128 #define CPUSTAT_J 0x00000002
129 #define CPUSTAT_P 0x00000001
131 struct kvm_s390_sie_block {
132 atomic_t cpuflags; /* 0x0000 */
133 __u32 : 1; /* 0x0004 */
137 __u8 reserved08[4]; /* 0x0008 */
138 #define PROG_IN_SIE (1<<0)
139 __u32 prog0c; /* 0x000c */
140 __u8 reserved10[16]; /* 0x0010 */
141 #define PROG_BLOCK_SIE (1<<0)
142 #define PROG_REQUEST (1<<1)
143 atomic_t prog20; /* 0x0020 */
144 __u8 reserved24[4]; /* 0x0024 */
145 __u64 cputm; /* 0x0028 */
146 __u64 ckc; /* 0x0030 */
147 __u64 epoch; /* 0x0038 */
148 __u8 reserved40[4]; /* 0x0040 */
149 #define LCTL_CR0 0x8000
150 #define LCTL_CR6 0x0200
151 #define LCTL_CR9 0x0040
152 #define LCTL_CR10 0x0020
153 #define LCTL_CR11 0x0010
154 #define LCTL_CR14 0x0002
155 __u16 lctl; /* 0x0044 */
156 __s16 icpua; /* 0x0046 */
157 #define ICTL_PINT 0x20000000
158 #define ICTL_LPSW 0x00400000
159 #define ICTL_STCTL 0x00040000
160 #define ICTL_ISKE 0x00004000
161 #define ICTL_SSKE 0x00002000
162 #define ICTL_RRBE 0x00001000
163 #define ICTL_TPROT 0x00000200
164 __u32 ictl; /* 0x0048 */
165 __u32 eca; /* 0x004c */
166 #define ICPT_INST 0x04
167 #define ICPT_PROGI 0x08
168 #define ICPT_INSTPROGI 0x0C
169 #define ICPT_OPEREXC 0x2C
170 #define ICPT_PARTEXEC 0x38
171 #define ICPT_IOINST 0x40
172 __u8 icptcode; /* 0x0050 */
173 __u8 icptstatus; /* 0x0051 */
174 __u16 ihcpu; /* 0x0052 */
175 __u8 reserved54[2]; /* 0x0054 */
176 __u16 ipa; /* 0x0056 */
177 __u32 ipb; /* 0x0058 */
178 __u32 scaoh; /* 0x005c */
179 __u8 reserved60; /* 0x0060 */
180 __u8 ecb; /* 0x0061 */
181 __u8 ecb2; /* 0x0062 */
182 #define ECB3_AES 0x04
183 #define ECB3_DEA 0x08
184 __u8 ecb3; /* 0x0063 */
185 __u32 scaol; /* 0x0064 */
186 __u8 reserved68[4]; /* 0x0068 */
187 __u32 todpr; /* 0x006c */
188 __u8 reserved70[32]; /* 0x0070 */
189 psw_t gpsw; /* 0x0090 */
190 __u64 gg14; /* 0x00a0 */
191 __u64 gg15; /* 0x00a8 */
192 __u8 reservedb0[20]; /* 0x00b0 */
193 __u16 extcpuaddr; /* 0x00c4 */
194 __u16 eic; /* 0x00c6 */
195 __u32 reservedc8; /* 0x00c8 */
196 __u16 pgmilc; /* 0x00cc */
197 __u16 iprcc; /* 0x00ce */
198 __u32 dxc; /* 0x00d0 */
199 __u16 mcn; /* 0x00d4 */
200 __u8 perc; /* 0x00d6 */
201 __u8 peratmid; /* 0x00d7 */
202 __u64 peraddr; /* 0x00d8 */
203 __u8 eai; /* 0x00e0 */
204 __u8 peraid; /* 0x00e1 */
205 __u8 oai; /* 0x00e2 */
206 __u8 armid; /* 0x00e3 */
207 __u8 reservede4[4]; /* 0x00e4 */
208 __u64 tecmc; /* 0x00e8 */
209 __u8 reservedf0[12]; /* 0x00f0 */
210 #define CRYCB_FORMAT1 0x00000001
211 #define CRYCB_FORMAT2 0x00000003
212 __u32 crycbd; /* 0x00fc */
213 __u64 gcr[16]; /* 0x0100 */
214 __u64 gbea; /* 0x0180 */
215 __u8 reserved188[24]; /* 0x0188 */
216 __u32 fac; /* 0x01a0 */
217 __u8 reserved1a4[20]; /* 0x01a4 */
218 __u64 cbrlo; /* 0x01b8 */
219 __u8 reserved1c0[8]; /* 0x01c0 */
220 __u32 ecd; /* 0x01c8 */
221 __u8 reserved1cc[18]; /* 0x01cc */
222 __u64 pp; /* 0x01de */
223 __u8 reserved1e6[2]; /* 0x01e6 */
224 __u64 itdba; /* 0x01e8 */
225 __u64 riccbd; /* 0x01f0 */
226 __u8 reserved1f8[8]; /* 0x01f8 */
227 } __attribute__((packed));
229 struct kvm_s390_itdb {
234 struct kvm_s390_sie_block sie_block;
235 __u8 reserved200[1024]; /* 0x0200 */
236 struct kvm_s390_itdb itdb; /* 0x0600 */
237 __u8 reserved700[2304]; /* 0x0700 */
240 struct kvm_vcpu_stat {
243 u32 exit_external_request;
244 u32 exit_external_interrupt;
245 u32 exit_stop_request;
247 u32 exit_instruction;
248 u32 halt_successful_poll;
249 u32 halt_attempted_poll;
250 u32 halt_poll_invalid;
252 u32 instruction_lctl;
253 u32 instruction_lctlg;
254 u32 instruction_stctl;
255 u32 instruction_stctg;
256 u32 exit_program_interruption;
257 u32 exit_instr_and_program;
258 u32 deliver_external_call;
259 u32 deliver_emergency_signal;
260 u32 deliver_service_signal;
261 u32 deliver_virtio_interrupt;
262 u32 deliver_stop_signal;
263 u32 deliver_prefix_signal;
264 u32 deliver_restart_signal;
265 u32 deliver_program_int;
268 u32 instruction_pfmf;
269 u32 instruction_stidp;
271 u32 instruction_stpx;
272 u32 instruction_stap;
273 u32 instruction_storage_key;
274 u32 instruction_ipte_interlock;
275 u32 instruction_stsch;
276 u32 instruction_chsc;
277 u32 instruction_stsi;
278 u32 instruction_stfl;
279 u32 instruction_tprot;
280 u32 instruction_essa;
281 u32 instruction_sigp_sense;
282 u32 instruction_sigp_sense_running;
283 u32 instruction_sigp_external_call;
284 u32 instruction_sigp_emergency;
285 u32 instruction_sigp_cond_emergency;
286 u32 instruction_sigp_start;
287 u32 instruction_sigp_stop;
288 u32 instruction_sigp_stop_store_status;
289 u32 instruction_sigp_store_status;
290 u32 instruction_sigp_store_adtl_status;
291 u32 instruction_sigp_arch;
292 u32 instruction_sigp_prefix;
293 u32 instruction_sigp_restart;
294 u32 instruction_sigp_init_cpu_reset;
295 u32 instruction_sigp_cpu_reset;
296 u32 instruction_sigp_unknown;
305 #define PGM_OPERATION 0x01
306 #define PGM_PRIVILEGED_OP 0x02
307 #define PGM_EXECUTE 0x03
308 #define PGM_PROTECTION 0x04
309 #define PGM_ADDRESSING 0x05
310 #define PGM_SPECIFICATION 0x06
311 #define PGM_DATA 0x07
312 #define PGM_FIXED_POINT_OVERFLOW 0x08
313 #define PGM_FIXED_POINT_DIVIDE 0x09
314 #define PGM_DECIMAL_OVERFLOW 0x0a
315 #define PGM_DECIMAL_DIVIDE 0x0b
316 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c
317 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d
318 #define PGM_HFP_SIGNIFICANCE 0x0e
319 #define PGM_HFP_DIVIDE 0x0f
320 #define PGM_SEGMENT_TRANSLATION 0x10
321 #define PGM_PAGE_TRANSLATION 0x11
322 #define PGM_TRANSLATION_SPEC 0x12
323 #define PGM_SPECIAL_OPERATION 0x13
324 #define PGM_OPERAND 0x15
325 #define PGM_TRACE_TABEL 0x16
326 #define PGM_VECTOR_PROCESSING 0x1b
327 #define PGM_SPACE_SWITCH 0x1c
328 #define PGM_HFP_SQUARE_ROOT 0x1d
329 #define PGM_PC_TRANSLATION_SPEC 0x1f
330 #define PGM_AFX_TRANSLATION 0x20
331 #define PGM_ASX_TRANSLATION 0x21
332 #define PGM_LX_TRANSLATION 0x22
333 #define PGM_EX_TRANSLATION 0x23
334 #define PGM_PRIMARY_AUTHORITY 0x24
335 #define PGM_SECONDARY_AUTHORITY 0x25
336 #define PGM_LFX_TRANSLATION 0x26
337 #define PGM_LSX_TRANSLATION 0x27
338 #define PGM_ALET_SPECIFICATION 0x28
339 #define PGM_ALEN_TRANSLATION 0x29
340 #define PGM_ALE_SEQUENCE 0x2a
341 #define PGM_ASTE_VALIDITY 0x2b
342 #define PGM_ASTE_SEQUENCE 0x2c
343 #define PGM_EXTENDED_AUTHORITY 0x2d
344 #define PGM_LSTE_SEQUENCE 0x2e
345 #define PGM_ASTE_INSTANCE 0x2f
346 #define PGM_STACK_FULL 0x30
347 #define PGM_STACK_EMPTY 0x31
348 #define PGM_STACK_SPECIFICATION 0x32
349 #define PGM_STACK_TYPE 0x33
350 #define PGM_STACK_OPERATION 0x34
351 #define PGM_ASCE_TYPE 0x38
352 #define PGM_REGION_FIRST_TRANS 0x39
353 #define PGM_REGION_SECOND_TRANS 0x3a
354 #define PGM_REGION_THIRD_TRANS 0x3b
355 #define PGM_MONITOR 0x40
357 #define PGM_CRYPTO_OPERATION 0x119
359 /* irq types in order of priority */
361 IRQ_PEND_MCHK_EX = 0,
365 IRQ_PEND_EXT_IRQ_KEY,
366 IRQ_PEND_EXT_MALFUNC,
367 IRQ_PEND_EXT_EMERGENCY,
368 IRQ_PEND_EXT_EXTERNAL,
369 IRQ_PEND_EXT_CLOCK_COMP,
370 IRQ_PEND_EXT_CPU_TIMER,
372 IRQ_PEND_EXT_SERVICE,
374 IRQ_PEND_PFAULT_INIT,
375 IRQ_PEND_PFAULT_DONE,
391 /* We have 2M for virtio device descriptor pages. Smallest amount of
392 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
394 #define KVM_S390_MAX_VIRTIO_IRQS 87381
397 * Repressible (non-floating) machine check interrupts
398 * subclass bits in MCIC
400 #define MCHK_EXTD_BIT 58
401 #define MCHK_DEGR_BIT 56
402 #define MCHK_WARN_BIT 55
403 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
404 (1UL << MCHK_EXTD_BIT) | \
405 (1UL << MCHK_WARN_BIT))
407 /* Exigent machine check interrupts subclass bits in MCIC */
408 #define MCHK_SD_BIT 63
409 #define MCHK_PD_BIT 62
410 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
412 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \
413 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
414 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \
415 (1UL << IRQ_PEND_EXT_MALFUNC) | \
416 (1UL << IRQ_PEND_EXT_EMERGENCY) | \
417 (1UL << IRQ_PEND_EXT_EXTERNAL) | \
418 (1UL << IRQ_PEND_EXT_TIMING) | \
419 (1UL << IRQ_PEND_EXT_HOST) | \
420 (1UL << IRQ_PEND_EXT_SERVICE) | \
421 (1UL << IRQ_PEND_VIRTIO) | \
422 (1UL << IRQ_PEND_PFAULT_INIT) | \
423 (1UL << IRQ_PEND_PFAULT_DONE))
425 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
426 (1UL << IRQ_PEND_IO_ISC_1) | \
427 (1UL << IRQ_PEND_IO_ISC_2) | \
428 (1UL << IRQ_PEND_IO_ISC_3) | \
429 (1UL << IRQ_PEND_IO_ISC_4) | \
430 (1UL << IRQ_PEND_IO_ISC_5) | \
431 (1UL << IRQ_PEND_IO_ISC_6) | \
432 (1UL << IRQ_PEND_IO_ISC_7))
434 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
435 (1UL << IRQ_PEND_MCHK_EX))
437 struct kvm_s390_interrupt_info {
438 struct list_head list;
441 struct kvm_s390_io_info io;
442 struct kvm_s390_ext_info ext;
443 struct kvm_s390_pgm_info pgm;
444 struct kvm_s390_emerg_info emerg;
445 struct kvm_s390_extcall_info extcall;
446 struct kvm_s390_prefix_info prefix;
447 struct kvm_s390_stop_info stop;
448 struct kvm_s390_mchk_info mchk;
452 struct kvm_s390_irq_payload {
453 struct kvm_s390_io_info io;
454 struct kvm_s390_ext_info ext;
455 struct kvm_s390_pgm_info pgm;
456 struct kvm_s390_emerg_info emerg;
457 struct kvm_s390_extcall_info extcall;
458 struct kvm_s390_prefix_info prefix;
459 struct kvm_s390_stop_info stop;
460 struct kvm_s390_mchk_info mchk;
463 struct kvm_s390_local_interrupt {
465 struct kvm_s390_float_interrupt *float_int;
466 struct swait_queue_head *wq;
468 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
469 struct kvm_s390_irq_payload irq;
470 unsigned long pending_irqs;
473 #define FIRQ_LIST_IO_ISC_0 0
474 #define FIRQ_LIST_IO_ISC_1 1
475 #define FIRQ_LIST_IO_ISC_2 2
476 #define FIRQ_LIST_IO_ISC_3 3
477 #define FIRQ_LIST_IO_ISC_4 4
478 #define FIRQ_LIST_IO_ISC_5 5
479 #define FIRQ_LIST_IO_ISC_6 6
480 #define FIRQ_LIST_IO_ISC_7 7
481 #define FIRQ_LIST_PFAULT 8
482 #define FIRQ_LIST_VIRTIO 9
483 #define FIRQ_LIST_COUNT 10
484 #define FIRQ_CNTR_IO 0
485 #define FIRQ_CNTR_SERVICE 1
486 #define FIRQ_CNTR_VIRTIO 2
487 #define FIRQ_CNTR_PFAULT 3
488 #define FIRQ_MAX_COUNT 4
490 struct kvm_s390_float_interrupt {
491 unsigned long pending_irqs;
493 struct list_head lists[FIRQ_LIST_COUNT];
494 int counters[FIRQ_MAX_COUNT];
495 struct kvm_s390_mchk_info mchk;
496 struct kvm_s390_ext_info srv_signal;
498 unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
501 struct kvm_hw_wp_info_arch {
503 unsigned long phys_addr;
508 struct kvm_hw_bp_info_arch {
514 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
515 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
516 * arch/s390/include/uapi/asm/kvm.h
518 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
520 #define guestdbg_enabled(vcpu) \
521 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
522 #define guestdbg_sstep_enabled(vcpu) \
523 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
524 #define guestdbg_hw_bp_enabled(vcpu) \
525 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
526 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
527 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
529 struct kvm_guestdbg_info_arch {
534 struct kvm_hw_bp_info_arch *hw_bp_info;
535 struct kvm_hw_wp_info_arch *hw_wp_info;
538 unsigned long last_bp;
541 struct kvm_vcpu_arch {
542 struct kvm_s390_sie_block *sie_block;
543 unsigned int host_acrs[NUM_ACRS];
544 struct fpu host_fpregs;
545 struct kvm_s390_local_interrupt local_int;
546 struct hrtimer ckc_timer;
547 struct kvm_s390_pgm_info pgm;
549 struct kvm_guestdbg_info_arch guestdbg;
550 unsigned long pfault_token;
551 unsigned long pfault_select;
552 unsigned long pfault_compare;
555 * The seqcount protects updates to cputm_start and sie_block.cputm,
556 * this way we can have non-blocking reads with consistent values.
557 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
558 * values and to start/stop/enable/disable cpu timer accounting.
560 seqcount_t cputm_seqcount;
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_cpu_model {
601 /* facility mask supported by kvm & hosting machine */
602 __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
603 /* facility list requested by guest (in dma page) */
609 struct kvm_s390_crypto {
610 struct kvm_s390_crypto_cb *crycb;
616 struct kvm_s390_crypto_cb {
617 __u8 reserved00[72]; /* 0x0000 */
618 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */
619 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */
620 __u8 reserved80[128]; /* 0x0080 */
624 * sie_page2 has to be allocated as DMA because fac_list and crycb need
625 * 31bit addresses in the sie control block.
628 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */
629 struct kvm_s390_crypto_cb crycb; /* 0x0800 */
630 u8 reserved900[0x1000 - 0x900]; /* 0x0900 */
638 struct kvm_s390_float_interrupt float_int;
639 struct kvm_device *flic;
641 unsigned long mem_limit;
645 int user_cpu_state_ctrl;
648 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
649 wait_queue_head_t ipte_wq;
651 struct mutex ipte_mutex;
652 spinlock_t start_stop_lock;
653 struct sie_page2 *sie_page2;
654 struct kvm_s390_cpu_model model;
655 struct kvm_s390_crypto crypto;
659 #define KVM_HVA_ERR_BAD (-1UL)
660 #define KVM_HVA_ERR_RO_BAD (-2UL)
662 static inline bool kvm_is_error_hva(unsigned long addr)
664 return IS_ERR_VALUE(addr);
667 #define ASYNC_PF_PER_VCPU 64
668 struct kvm_arch_async_pf {
669 unsigned long pfault_token;
672 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
674 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
675 struct kvm_async_pf *work);
677 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
678 struct kvm_async_pf *work);
680 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
681 struct kvm_async_pf *work);
683 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
684 extern char sie_exit;
686 static inline void kvm_arch_hardware_disable(void) {}
687 static inline void kvm_arch_check_processor_compat(void *rtn) {}
688 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
689 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
690 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
691 static inline void kvm_arch_free_memslot(struct kvm *kvm,
692 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
693 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
694 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
695 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
696 struct kvm_memory_slot *slot) {}
697 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
698 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
700 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);