summaryrefslogtreecommitdiff
path: root/arch/s390/include/asm/kvm_host.h
blob: 8ced426091e10106bcc675c85d291943b130d72a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
/*
 * definition for kernel virtual machines on s390
 *
 * Copyright IBM Corp. 2008, 2009
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License (version 2 only)
 * as published by the Free Software Foundation.
 *
 *    Author(s): Carsten Otte <cotte@de.ibm.com>
 */


#ifndef ASM_KVM_HOST_H
#define ASM_KVM_HOST_H

#include <linux/types.h>
#include <linux/hrtimer.h>
#include <linux/interrupt.h>
#include <linux/kvm_types.h>
#include <linux/kvm_host.h>
#include <linux/kvm.h>
#include <asm/debug.h>
#include <asm/cpu.h>
#include <asm/fpu-internal.h>
#include <asm/isc.h>

#define KVM_MAX_VCPUS 64
#define KVM_USER_MEM_SLOTS 32

/*
 * These seem to be used for allocating ->chip in the routing table,
 * which we don't use. 4096 is an out-of-thin-air value. If we need
 * to look at ->chip later on, we'll need to revisit this.
 */
#define KVM_NR_IRQCHIPS 1
#define KVM_IRQCHIP_NUM_PINS 4096
#define KVM_HALT_POLL_NS_DEFAULT 0

#define SIGP_CTRL_C		0x80
#define SIGP_CTRL_SCN_MASK	0x3f

struct sca_entry {
	__u8	reserved0;
	__u8	sigp_ctrl;
	__u16	reserved[3];
	__u64	sda;
	__u64	reserved2[2];
} __attribute__((packed));

union ipte_control {
	unsigned long val;
	struct {
		unsigned long k  : 1;
		unsigned long kh : 31;
		unsigned long kg : 32;
	};
};

struct sca_block {
	union ipte_control ipte_control;
	__u64	reserved[5];
	__u64	mcn;
	__u64	reserved2;
	struct sca_entry cpu[64];
} __attribute__((packed));

#define CPUSTAT_STOPPED    0x80000000
#define CPUSTAT_WAIT       0x10000000
#define CPUSTAT_ECALL_PEND 0x08000000
#define CPUSTAT_STOP_INT   0x04000000
#define CPUSTAT_IO_INT     0x02000000
#define CPUSTAT_EXT_INT    0x01000000
#define CPUSTAT_RUNNING    0x00800000
#define CPUSTAT_RETAINED   0x00400000
#define CPUSTAT_TIMING_SUB 0x00020000
#define CPUSTAT_SIE_SUB    0x00010000
#define CPUSTAT_RRF        0x00008000
#define CPUSTAT_SLSV       0x00004000
#define CPUSTAT_SLSR       0x00002000
#define CPUSTAT_ZARCH      0x00000800
#define CPUSTAT_MCDS       0x00000100
#define CPUSTAT_SM         0x00000080
#define CPUSTAT_IBS        0x00000040
#define CPUSTAT_GED2       0x00000010
#define CPUSTAT_G          0x00000008
#define CPUSTAT_GED        0x00000004
#define CPUSTAT_J          0x00000002
#define CPUSTAT_P          0x00000001

struct kvm_s390_sie_block {
	atomic_t cpuflags;		/* 0x0000 */
	__u32 : 1;			/* 0x0004 */
	__u32 prefix : 18;
	__u32 : 1;
	__u32 ibc : 12;
	__u8	reserved08[4];		/* 0x0008 */
#define PROG_IN_SIE (1<<0)
	__u32	prog0c;			/* 0x000c */
	__u8	reserved10[16];		/* 0x0010 */
#define PROG_BLOCK_SIE	(1<<0)
#define PROG_REQUEST	(1<<1)
	atomic_t prog20;		/* 0x0020 */
	__u8	reserved24[4];		/* 0x0024 */
	__u64	cputm;			/* 0x0028 */
	__u64	ckc;			/* 0x0030 */
	__u64	epoch;			/* 0x0038 */
	__u8	reserved40[4];		/* 0x0040 */
#define LCTL_CR0	0x8000
#define LCTL_CR6	0x0200
#define LCTL_CR9	0x0040
#define LCTL_CR10	0x0020
#define LCTL_CR11	0x0010
#define LCTL_CR14	0x0002
	__u16   lctl;			/* 0x0044 */
	__s16	icpua;			/* 0x0046 */
#define ICTL_PINT	0x20000000
#define ICTL_LPSW	0x00400000
#define ICTL_STCTL	0x00040000
#define ICTL_ISKE	0x00004000
#define ICTL_SSKE	0x00002000
#define ICTL_RRBE	0x00001000
#define ICTL_TPROT	0x00000200
	__u32	ictl;			/* 0x0048 */
	__u32	eca;			/* 0x004c */
#define ICPT_INST	0x04
#define ICPT_PROGI	0x08
#define ICPT_INSTPROGI	0x0C
#define ICPT_OPEREXC	0x2C
#define ICPT_PARTEXEC	0x38
#define ICPT_IOINST	0x40
	__u8	icptcode;		/* 0x0050 */
	__u8	icptstatus;		/* 0x0051 */
	__u16	ihcpu;			/* 0x0052 */
	__u8	reserved54[2];		/* 0x0054 */
	__u16	ipa;			/* 0x0056 */
	__u32	ipb;			/* 0x0058 */
	__u32	scaoh;			/* 0x005c */
	__u8	reserved60;		/* 0x0060 */
	__u8	ecb;			/* 0x0061 */
	__u8    ecb2;                   /* 0x0062 */
#define ECB3_AES 0x04
#define ECB3_DEA 0x08
	__u8    ecb3;			/* 0x0063 */
	__u32	scaol;			/* 0x0064 */
	__u8	reserved68[4];		/* 0x0068 */
	__u32	todpr;			/* 0x006c */
	__u8	reserved70[32];		/* 0x0070 */
	psw_t	gpsw;			/* 0x0090 */
	__u64	gg14;			/* 0x00a0 */
	__u64	gg15;			/* 0x00a8 */
	__u8	reservedb0[20];		/* 0x00b0 */
	__u16	extcpuaddr;		/* 0x00c4 */
	__u16	eic;			/* 0x00c6 */
	__u32	reservedc8;		/* 0x00c8 */
	__u16	pgmilc;			/* 0x00cc */
	__u16	iprcc;			/* 0x00ce */
	__u32	dxc;			/* 0x00d0 */
	__u16	mcn;			/* 0x00d4 */
	__u8	perc;			/* 0x00d6 */
	__u8	peratmid;		/* 0x00d7 */
	__u64	peraddr;		/* 0x00d8 */
	__u8	eai;			/* 0x00e0 */
	__u8	peraid;			/* 0x00e1 */
	__u8	oai;			/* 0x00e2 */
	__u8	armid;			/* 0x00e3 */
	__u8	reservede4[4];		/* 0x00e4 */
	__u64	tecmc;			/* 0x00e8 */
	__u8	reservedf0[12];		/* 0x00f0 */
#define CRYCB_FORMAT1 0x00000001
#define CRYCB_FORMAT2 0x00000003
	__u32	crycbd;			/* 0x00fc */
	__u64	gcr[16];		/* 0x0100 */
	__u64	gbea;			/* 0x0180 */
	__u8	reserved188[24];	/* 0x0188 */
	__u32	fac;			/* 0x01a0 */
	__u8	reserved1a4[20];	/* 0x01a4 */
	__u64	cbrlo;			/* 0x01b8 */
	__u8	reserved1c0[8];		/* 0x01c0 */
	__u32	ecd;			/* 0x01c8 */
	__u8	reserved1cc[18];	/* 0x01cc */
	__u64	pp;			/* 0x01de */
	__u8	reserved1e6[2];		/* 0x01e6 */
	__u64	itdba;			/* 0x01e8 */
	__u8	reserved1f0[16];	/* 0x01f0 */
} __attribute__((packed));

struct kvm_s390_itdb {
	__u8	data[256];
} __packed;

struct kvm_s390_vregs {
	__vector128 vrs[32];
	__u8	reserved200[512];	/* for future vector expansion */
} __packed;

struct sie_page {
	struct kvm_s390_sie_block sie_block;
	__u8 reserved200[1024];		/* 0x0200 */
	struct kvm_s390_itdb itdb;	/* 0x0600 */
	__u8 reserved700[1280];		/* 0x0700 */
	struct kvm_s390_vregs vregs;	/* 0x0c00 */
} __packed;

struct kvm_vcpu_stat {
	u32 exit_userspace;
	u32 exit_null;
	u32 exit_external_request;
	u32 exit_external_interrupt;
	u32 exit_stop_request;
	u32 exit_validity;
	u32 exit_instruction;
	u32 halt_successful_poll;
	u32 halt_attempted_poll;
	u32 halt_wakeup;
	u32 instruction_lctl;
	u32 instruction_lctlg;
	u32 instruction_stctl;
	u32 instruction_stctg;
	u32 exit_program_interruption;
	u32 exit_instr_and_program;
	u32 deliver_external_call;
	u32 deliver_emergency_signal;
	u32 deliver_service_signal;
	u32 deliver_virtio_interrupt;
	u32 deliver_stop_signal;
	u32 deliver_prefix_signal;
	u32 deliver_restart_signal;
	u32 deliver_program_int;
	u32 deliver_io_int;
	u32 exit_wait_state;
	u32 instruction_pfmf;
	u32 instruction_stidp;
	u32 instruction_spx;
	u32 instruction_stpx;
	u32 instruction_stap;
	u32 instruction_storage_key;
	u32 instruction_ipte_interlock;
	u32 instruction_stsch;
	u32 instruction_chsc;
	u32 instruction_stsi;
	u32 instruction_stfl;
	u32 instruction_tprot;
	u32 instruction_essa;
	u32 instruction_sigp_sense;
	u32 instruction_sigp_sense_running;
	u32 instruction_sigp_external_call;
	u32 instruction_sigp_emergency;
	u32 instruction_sigp_cond_emergency;
	u32 instruction_sigp_start;
	u32 instruction_sigp_stop;
	u32 instruction_sigp_stop_store_status;
	u32 instruction_sigp_store_status;
	u32 instruction_sigp_store_adtl_status;
	u32 instruction_sigp_arch;
	u32 instruction_sigp_prefix;
	u32 instruction_sigp_restart;
	u32 instruction_sigp_init_cpu_reset;
	u32 instruction_sigp_cpu_reset;
	u32 instruction_sigp_unknown;
	u32 diagnose_10;
	u32 diagnose_44;
	u32 diagnose_9c;
	u32 diagnose_258;
	u32 diagnose_308;
	u32 diagnose_500;
};

#define PGM_OPERATION			0x01
#define PGM_PRIVILEGED_OP		0x02
#define PGM_EXECUTE			0x03
#define PGM_PROTECTION			0x04
#define PGM_ADDRESSING			0x05
#define PGM_SPECIFICATION		0x06
#define PGM_DATA			0x07
#define PGM_FIXED_POINT_OVERFLOW	0x08
#define PGM_FIXED_POINT_DIVIDE		0x09
#define PGM_DECIMAL_OVERFLOW		0x0a
#define PGM_DECIMAL_DIVIDE		0x0b
#define PGM_HFP_EXPONENT_OVERFLOW	0x0c
#define PGM_HFP_EXPONENT_UNDERFLOW	0x0d
#define PGM_HFP_SIGNIFICANCE		0x0e
#define PGM_HFP_DIVIDE			0x0f
#define PGM_SEGMENT_TRANSLATION		0x10
#define PGM_PAGE_TRANSLATION		0x11
#define PGM_TRANSLATION_SPEC		0x12
#define PGM_SPECIAL_OPERATION		0x13
#define PGM_OPERAND			0x15
#define PGM_TRACE_TABEL			0x16
#define PGM_VECTOR_PROCESSING		0x1b
#define PGM_SPACE_SWITCH		0x1c
#define PGM_HFP_SQUARE_ROOT		0x1d
#define PGM_PC_TRANSLATION_SPEC		0x1f
#define PGM_AFX_TRANSLATION		0x20
#define PGM_ASX_TRANSLATION		0x21
#define PGM_LX_TRANSLATION		0x22
#define PGM_EX_TRANSLATION		0x23
#define PGM_PRIMARY_AUTHORITY		0x24
#define PGM_SECONDARY_AUTHORITY		0x25
#define PGM_LFX_TRANSLATION		0x26
#define PGM_LSX_TRANSLATION		0x27
#define PGM_ALET_SPECIFICATION		0x28
#define PGM_ALEN_TRANSLATION		0x29
#define PGM_ALE_SEQUENCE		0x2a
#define PGM_ASTE_VALIDITY		0x2b
#define PGM_ASTE_SEQUENCE		0x2c
#define PGM_EXTENDED_AUTHORITY		0x2d
#define PGM_LSTE_SEQUENCE		0x2e
#define PGM_ASTE_INSTANCE		0x2f
#define PGM_STACK_FULL			0x30
#define PGM_STACK_EMPTY			0x31
#define PGM_STACK_SPECIFICATION		0x32
#define PGM_STACK_TYPE			0x33
#define PGM_STACK_OPERATION		0x34
#define PGM_ASCE_TYPE			0x38
#define PGM_REGION_FIRST_TRANS		0x39
#define PGM_REGION_SECOND_TRANS		0x3a
#define PGM_REGION_THIRD_TRANS		0x3b
#define PGM_MONITOR			0x40
#define PGM_PER				0x80
#define PGM_CRYPTO_OPERATION		0x119

/* irq types in order of priority */
enum irq_types {
	IRQ_PEND_MCHK_EX = 0,
	IRQ_PEND_SVC,
	IRQ_PEND_PROG,
	IRQ_PEND_MCHK_REP,
	IRQ_PEND_EXT_IRQ_KEY,
	IRQ_PEND_EXT_MALFUNC,
	IRQ_PEND_EXT_EMERGENCY,
	IRQ_PEND_EXT_EXTERNAL,
	IRQ_PEND_EXT_CLOCK_COMP,
	IRQ_PEND_EXT_CPU_TIMER,
	IRQ_PEND_EXT_TIMING,
	IRQ_PEND_EXT_SERVICE,
	IRQ_PEND_EXT_HOST,
	IRQ_PEND_PFAULT_INIT,
	IRQ_PEND_PFAULT_DONE,
	IRQ_PEND_VIRTIO,
	IRQ_PEND_IO_ISC_0,
	IRQ_PEND_IO_ISC_1,
	IRQ_PEND_IO_ISC_2,
	IRQ_PEND_IO_ISC_3,
	IRQ_PEND_IO_ISC_4,
	IRQ_PEND_IO_ISC_5,
	IRQ_PEND_IO_ISC_6,
	IRQ_PEND_IO_ISC_7,
	IRQ_PEND_SIGP_STOP,
	IRQ_PEND_RESTART,
	IRQ_PEND_SET_PREFIX,
	IRQ_PEND_COUNT
};

/* We have 2M for virtio device descriptor pages. Smallest amount of
 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
 */
#define KVM_S390_MAX_VIRTIO_IRQS 87381

/*
 * Repressible (non-floating) machine check interrupts
 * subclass bits in MCIC
 */
#define MCHK_EXTD_BIT 58
#define MCHK_DEGR_BIT 56
#define MCHK_WARN_BIT 55
#define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
		       (1UL << MCHK_EXTD_BIT) | \
		       (1UL << MCHK_WARN_BIT))

/* Exigent machine check interrupts subclass bits in MCIC */
#define MCHK_SD_BIT 63
#define MCHK_PD_BIT 62
#define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))

#define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
			   (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
			   (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
			   (1UL << IRQ_PEND_EXT_MALFUNC)    | \
			   (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
			   (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
			   (1UL << IRQ_PEND_EXT_TIMING)     | \
			   (1UL << IRQ_PEND_EXT_HOST)       | \
			   (1UL << IRQ_PEND_EXT_SERVICE)    | \
			   (1UL << IRQ_PEND_VIRTIO)         | \
			   (1UL << IRQ_PEND_PFAULT_INIT)    | \
			   (1UL << IRQ_PEND_PFAULT_DONE))

#define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
			  (1UL << IRQ_PEND_IO_ISC_1) | \
			  (1UL << IRQ_PEND_IO_ISC_2) | \
			  (1UL << IRQ_PEND_IO_ISC_3) | \
			  (1UL << IRQ_PEND_IO_ISC_4) | \
			  (1UL << IRQ_PEND_IO_ISC_5) | \
			  (1UL << IRQ_PEND_IO_ISC_6) | \
			  (1UL << IRQ_PEND_IO_ISC_7))

#define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
			    (1UL << IRQ_PEND_MCHK_EX))

struct kvm_s390_interrupt_info {
	struct list_head list;
	u64	type;
	union {
		struct kvm_s390_io_info io;
		struct kvm_s390_ext_info ext;
		struct kvm_s390_pgm_info pgm;
		struct kvm_s390_emerg_info emerg;
		struct kvm_s390_extcall_info extcall;
		struct kvm_s390_prefix_info prefix;
		struct kvm_s390_stop_info stop;
		struct kvm_s390_mchk_info mchk;
	};
};

struct kvm_s390_irq_payload {
	struct kvm_s390_io_info io;
	struct kvm_s390_ext_info ext;
	struct kvm_s390_pgm_info pgm;
	struct kvm_s390_emerg_info emerg;
	struct kvm_s390_extcall_info extcall;
	struct kvm_s390_prefix_info prefix;
	struct kvm_s390_stop_info stop;
	struct kvm_s390_mchk_info mchk;
};

struct kvm_s390_local_interrupt {
	spinlock_t lock;
	struct kvm_s390_float_interrupt *float_int;
	wait_queue_head_t *wq;
	atomic_t *cpuflags;
	DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
	struct kvm_s390_irq_payload irq;
	unsigned long pending_irqs;
};

#define FIRQ_LIST_IO_ISC_0 0
#define FIRQ_LIST_IO_ISC_1 1
#define FIRQ_LIST_IO_ISC_2 2
#define FIRQ_LIST_IO_ISC_3 3
#define FIRQ_LIST_IO_ISC_4 4
#define FIRQ_LIST_IO_ISC_5 5
#define FIRQ_LIST_IO_ISC_6 6
#define FIRQ_LIST_IO_ISC_7 7
#define FIRQ_LIST_PFAULT   8
#define FIRQ_LIST_VIRTIO   9
#define FIRQ_LIST_COUNT   10
#define FIRQ_CNTR_IO       0
#define FIRQ_CNTR_SERVICE  1
#define FIRQ_CNTR_VIRTIO   2
#define FIRQ_CNTR_PFAULT   3
#define FIRQ_MAX_COUNT     4

struct kvm_s390_float_interrupt {
	unsigned long pending_irqs;
	spinlock_t lock;
	struct list_head lists[FIRQ_LIST_COUNT];
	int counters[FIRQ_MAX_COUNT];
	struct kvm_s390_mchk_info mchk;
	struct kvm_s390_ext_info srv_signal;
	int next_rr_cpu;
	unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
};

struct kvm_hw_wp_info_arch {
	unsigned long addr;
	unsigned long phys_addr;
	int len;
	char *old_data;
};

struct kvm_hw_bp_info_arch {
	unsigned long addr;
	int len;
};

/*
 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 * arch/s390/include/uapi/asm/kvm.h
 */
#define KVM_GUESTDBG_EXIT_PENDING 0x10000000

#define guestdbg_enabled(vcpu) \
		(vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
#define guestdbg_sstep_enabled(vcpu) \
		(vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
#define guestdbg_hw_bp_enabled(vcpu) \
		(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
#define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
		(vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))

struct kvm_guestdbg_info_arch {
	unsigned long cr0;
	unsigned long cr9;
	unsigned long cr10;
	unsigned long cr11;
	struct kvm_hw_bp_info_arch *hw_bp_info;
	struct kvm_hw_wp_info_arch *hw_wp_info;
	int nr_hw_bp;
	int nr_hw_wp;
	unsigned long last_bp;
};

struct kvm_vcpu_arch {
	struct kvm_s390_sie_block *sie_block;
	unsigned int      host_acrs[NUM_ACRS];
	struct fpu	  host_fpregs;
	struct fpu	  guest_fpregs;
	struct kvm_s390_local_interrupt local_int;
	struct hrtimer    ckc_timer;
	struct kvm_s390_pgm_info pgm;
	union  {
		struct cpuid	cpu_id;
		u64		stidp_data;
	};
	struct gmap *gmap;
	struct kvm_guestdbg_info_arch guestdbg;
	unsigned long pfault_token;
	unsigned long pfault_select;
	unsigned long pfault_compare;
};

struct kvm_vm_stat {
	u32 remote_tlb_flush;
};

struct kvm_arch_memory_slot {
};

struct s390_map_info {
	struct list_head list;
	__u64 guest_addr;
	__u64 addr;
	struct page *page;
};

struct s390_io_adapter {
	unsigned int id;
	int isc;
	bool maskable;
	bool masked;
	bool swap;
	struct rw_semaphore maps_lock;
	struct list_head maps;
	atomic_t nr_maps;
};

#define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
#define MAX_S390_ADAPTER_MAPS 256

/* maximum size of facilities and facility mask is 2k bytes */
#define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
#define S390_ARCH_FAC_LIST_SIZE_U64 \
	(S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
#define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
#define S390_ARCH_FAC_MASK_SIZE_U64 \
	(S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))

struct kvm_s390_fac {
	/* facility list requested by guest */
	__u64 list[S390_ARCH_FAC_LIST_SIZE_U64];
	/* facility mask supported by kvm & hosting machine */
	__u64 mask[S390_ARCH_FAC_LIST_SIZE_U64];
};

struct kvm_s390_cpu_model {
	struct kvm_s390_fac *fac;
	struct cpuid cpu_id;
	unsigned short ibc;
};

struct kvm_s390_crypto {
	struct kvm_s390_crypto_cb *crycb;
	__u32 crycbd;
	__u8 aes_kw;
	__u8 dea_kw;
};

struct kvm_s390_crypto_cb {
	__u8    reserved00[72];                 /* 0x0000 */
	__u8    dea_wrapping_key_mask[24];      /* 0x0048 */
	__u8    aes_wrapping_key_mask[32];      /* 0x0060 */
	__u8    reserved80[128];                /* 0x0080 */
};

struct kvm_arch{
	struct sca_block *sca;
	debug_info_t *dbf;
	struct kvm_s390_float_interrupt float_int;
	struct kvm_device *flic;
	struct gmap *gmap;
	int css_support;
	int use_irqchip;
	int use_cmma;
	int user_cpu_state_ctrl;
	int user_sigp;
	int user_stsi;
	struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
	wait_queue_head_t ipte_wq;
	int ipte_lock_count;
	struct mutex ipte_mutex;
	spinlock_t start_stop_lock;
	struct kvm_s390_cpu_model model;
	struct kvm_s390_crypto crypto;
	u64 epoch;
};

#define KVM_HVA_ERR_BAD		(-1UL)
#define KVM_HVA_ERR_RO_BAD	(-2UL)

static inline bool kvm_is_error_hva(unsigned long addr)
{
	return IS_ERR_VALUE(addr);
}

#define ASYNC_PF_PER_VCPU	64
struct kvm_arch_async_pf {
	unsigned long pfault_token;
};

bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);

void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
			       struct kvm_async_pf *work);

void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
				     struct kvm_async_pf *work);

void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
				 struct kvm_async_pf *work);

extern int sie64a(struct kvm_s390_sie_block *, u64 *);
extern char sie_exit;

static inline void kvm_arch_hardware_disable(void) {}
static inline void kvm_arch_check_processor_compat(void *rtn) {}
static inline void kvm_arch_sync_events(struct kvm *kvm) {}
static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
static inline void kvm_arch_free_memslot(struct kvm *kvm,
		struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
		struct kvm_memory_slot *slot) {}

#endif