xref: /linux/arch/s390/include/asm/kvm_host.h (revision e38c884df92119d96f652d51f82661dd2fc0b885)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * definition for kernel virtual machines on s390
4  *
5  * Copyright IBM Corp. 2008, 2018
6  *
7  *    Author(s): Carsten Otte <cotte@de.ibm.com>
8  */
9 
10 
11 #ifndef ASM_KVM_HOST_H
12 #define ASM_KVM_HOST_H
13 
14 #include <linux/types.h>
15 #include <linux/hrtimer.h>
16 #include <linux/interrupt.h>
17 #include <linux/kvm_types.h>
18 #include <linux/kvm.h>
19 #include <linux/seqlock.h>
20 #include <linux/module.h>
21 #include <linux/pci.h>
22 #include <linux/mmu_notifier.h>
23 #include <asm/kvm_host_types.h>
24 #include <asm/debug.h>
25 #include <asm/cpu.h>
26 #include <asm/fpu.h>
27 #include <asm/isc.h>
28 #include <asm/guarded_storage.h>
29 
30 #define KVM_HAVE_MMU_RWLOCK
31 #define KVM_MAX_VCPUS 255
32 
33 #define KVM_INTERNAL_MEM_SLOTS 1
34 
35 /*
36  * These seem to be used for allocating ->chip in the routing table, which we
37  * don't use. 1 is as small as we can get to reduce the needed memory. If we
38  * need to look at ->chip later on, we'll need to revisit this.
39  */
40 #define KVM_NR_IRQCHIPS 1
41 #define KVM_IRQCHIP_NUM_PINS 1
42 #define KVM_HALT_POLL_NS_DEFAULT 50000
43 
44 /* s390-specific vcpu->requests bit members */
45 #define KVM_REQ_ENABLE_IBS	KVM_ARCH_REQ(0)
46 #define KVM_REQ_DISABLE_IBS	KVM_ARCH_REQ(1)
47 #define KVM_REQ_ICPT_OPEREXC	KVM_ARCH_REQ(2)
48 #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
49 #define KVM_REQ_STOP_MIGRATION  KVM_ARCH_REQ(4)
50 #define KVM_REQ_VSIE_RESTART	KVM_ARCH_REQ(5)
51 #define KVM_REQ_REFRESH_GUEST_PREFIX	\
52 	KVM_ARCH_REQ_FLAGS(6, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
53 
54 struct kvm_vcpu_stat {
55 	struct kvm_vcpu_stat_generic generic;
56 	u64 exit_userspace;
57 	u64 exit_null;
58 	u64 exit_external_request;
59 	u64 exit_io_request;
60 	u64 exit_external_interrupt;
61 	u64 exit_stop_request;
62 	u64 exit_validity;
63 	u64 exit_instruction;
64 	u64 exit_pei;
65 	u64 halt_no_poll_steal;
66 	u64 instruction_lctl;
67 	u64 instruction_lctlg;
68 	u64 instruction_stctl;
69 	u64 instruction_stctg;
70 	u64 exit_program_interruption;
71 	u64 exit_instr_and_program;
72 	u64 exit_operation_exception;
73 	u64 deliver_ckc;
74 	u64 deliver_cputm;
75 	u64 deliver_external_call;
76 	u64 deliver_emergency_signal;
77 	u64 deliver_service_signal;
78 	u64 deliver_virtio;
79 	u64 deliver_stop_signal;
80 	u64 deliver_prefix_signal;
81 	u64 deliver_restart_signal;
82 	u64 deliver_program;
83 	u64 deliver_io;
84 	u64 deliver_machine_check;
85 	u64 exit_wait_state;
86 	u64 inject_ckc;
87 	u64 inject_cputm;
88 	u64 inject_external_call;
89 	u64 inject_emergency_signal;
90 	u64 inject_mchk;
91 	u64 inject_pfault_init;
92 	u64 inject_program;
93 	u64 inject_restart;
94 	u64 inject_set_prefix;
95 	u64 inject_stop_signal;
96 	u64 instruction_epsw;
97 	u64 instruction_gs;
98 	u64 instruction_io_other;
99 	u64 instruction_lpsw;
100 	u64 instruction_lpswe;
101 	u64 instruction_lpswey;
102 	u64 instruction_pfmf;
103 	u64 instruction_ptff;
104 	u64 instruction_sck;
105 	u64 instruction_sckpf;
106 	u64 instruction_stidp;
107 	u64 instruction_spx;
108 	u64 instruction_stpx;
109 	u64 instruction_stap;
110 	u64 instruction_iske;
111 	u64 instruction_ri;
112 	u64 instruction_rrbe;
113 	u64 instruction_sske;
114 	u64 instruction_ipte_interlock;
115 	u64 instruction_stsi;
116 	u64 instruction_stfl;
117 	u64 instruction_tb;
118 	u64 instruction_tpi;
119 	u64 instruction_tprot;
120 	u64 instruction_tsch;
121 	u64 instruction_sie;
122 	u64 instruction_essa;
123 	u64 instruction_sthyi;
124 	u64 instruction_sigp_sense;
125 	u64 instruction_sigp_sense_running;
126 	u64 instruction_sigp_external_call;
127 	u64 instruction_sigp_emergency;
128 	u64 instruction_sigp_cond_emergency;
129 	u64 instruction_sigp_start;
130 	u64 instruction_sigp_stop;
131 	u64 instruction_sigp_stop_store_status;
132 	u64 instruction_sigp_store_status;
133 	u64 instruction_sigp_store_adtl_status;
134 	u64 instruction_sigp_arch;
135 	u64 instruction_sigp_prefix;
136 	u64 instruction_sigp_restart;
137 	u64 instruction_sigp_init_cpu_reset;
138 	u64 instruction_sigp_cpu_reset;
139 	u64 instruction_sigp_unknown;
140 	u64 instruction_diagnose_10;
141 	u64 instruction_diagnose_44;
142 	u64 instruction_diagnose_9c;
143 	u64 diag_9c_ignored;
144 	u64 diag_9c_forward;
145 	u64 instruction_diagnose_258;
146 	u64 instruction_diagnose_308;
147 	u64 instruction_diagnose_500;
148 	u64 instruction_diagnose_other;
149 	u64 pfault_sync;
150 	u64 signal_exits;
151 };
152 
153 #define PGM_OPERATION			0x01
154 #define PGM_PRIVILEGED_OP		0x02
155 #define PGM_EXECUTE			0x03
156 #define PGM_PROTECTION			0x04
157 #define PGM_ADDRESSING			0x05
158 #define PGM_SPECIFICATION		0x06
159 #define PGM_DATA			0x07
160 #define PGM_FIXED_POINT_OVERFLOW	0x08
161 #define PGM_FIXED_POINT_DIVIDE		0x09
162 #define PGM_DECIMAL_OVERFLOW		0x0a
163 #define PGM_DECIMAL_DIVIDE		0x0b
164 #define PGM_HFP_EXPONENT_OVERFLOW	0x0c
165 #define PGM_HFP_EXPONENT_UNDERFLOW	0x0d
166 #define PGM_HFP_SIGNIFICANCE		0x0e
167 #define PGM_HFP_DIVIDE			0x0f
168 #define PGM_SEGMENT_TRANSLATION		0x10
169 #define PGM_PAGE_TRANSLATION		0x11
170 #define PGM_TRANSLATION_SPEC		0x12
171 #define PGM_SPECIAL_OPERATION		0x13
172 #define PGM_OPERAND			0x15
173 #define PGM_TRACE_TABEL			0x16
174 #define PGM_VECTOR_PROCESSING		0x1b
175 #define PGM_SPACE_SWITCH		0x1c
176 #define PGM_HFP_SQUARE_ROOT		0x1d
177 #define PGM_PC_TRANSLATION_SPEC		0x1f
178 #define PGM_AFX_TRANSLATION		0x20
179 #define PGM_ASX_TRANSLATION		0x21
180 #define PGM_LX_TRANSLATION		0x22
181 #define PGM_EX_TRANSLATION		0x23
182 #define PGM_PRIMARY_AUTHORITY		0x24
183 #define PGM_SECONDARY_AUTHORITY		0x25
184 #define PGM_LFX_TRANSLATION		0x26
185 #define PGM_LSX_TRANSLATION		0x27
186 #define PGM_ALET_SPECIFICATION		0x28
187 #define PGM_ALEN_TRANSLATION		0x29
188 #define PGM_ALE_SEQUENCE		0x2a
189 #define PGM_ASTE_VALIDITY		0x2b
190 #define PGM_ASTE_SEQUENCE		0x2c
191 #define PGM_EXTENDED_AUTHORITY		0x2d
192 #define PGM_LSTE_SEQUENCE		0x2e
193 #define PGM_ASTE_INSTANCE		0x2f
194 #define PGM_STACK_FULL			0x30
195 #define PGM_STACK_EMPTY			0x31
196 #define PGM_STACK_SPECIFICATION		0x32
197 #define PGM_STACK_TYPE			0x33
198 #define PGM_STACK_OPERATION		0x34
199 #define PGM_ASCE_TYPE			0x38
200 #define PGM_REGION_FIRST_TRANS		0x39
201 #define PGM_REGION_SECOND_TRANS		0x3a
202 #define PGM_REGION_THIRD_TRANS		0x3b
203 #define PGM_SECURE_STORAGE_ACCESS	0x3d
204 #define PGM_NON_SECURE_STORAGE_ACCESS	0x3e
205 #define PGM_SECURE_STORAGE_VIOLATION	0x3f
206 #define PGM_MONITOR			0x40
207 #define PGM_PER				0x80
208 #define PGM_CRYPTO_OPERATION		0x119
209 
210 /* irq types in ascend order of priorities */
211 enum irq_types {
212 	IRQ_PEND_SET_PREFIX = 0,
213 	IRQ_PEND_RESTART,
214 	IRQ_PEND_SIGP_STOP,
215 	IRQ_PEND_IO_ISC_7,
216 	IRQ_PEND_IO_ISC_6,
217 	IRQ_PEND_IO_ISC_5,
218 	IRQ_PEND_IO_ISC_4,
219 	IRQ_PEND_IO_ISC_3,
220 	IRQ_PEND_IO_ISC_2,
221 	IRQ_PEND_IO_ISC_1,
222 	IRQ_PEND_IO_ISC_0,
223 	IRQ_PEND_VIRTIO,
224 	IRQ_PEND_PFAULT_DONE,
225 	IRQ_PEND_PFAULT_INIT,
226 	IRQ_PEND_EXT_HOST,
227 	IRQ_PEND_EXT_SERVICE,
228 	IRQ_PEND_EXT_SERVICE_EV,
229 	IRQ_PEND_EXT_TIMING,
230 	IRQ_PEND_EXT_CPU_TIMER,
231 	IRQ_PEND_EXT_CLOCK_COMP,
232 	IRQ_PEND_EXT_EXTERNAL,
233 	IRQ_PEND_EXT_EMERGENCY,
234 	IRQ_PEND_EXT_MALFUNC,
235 	IRQ_PEND_EXT_IRQ_KEY,
236 	IRQ_PEND_MCHK_REP,
237 	IRQ_PEND_PROG,
238 	IRQ_PEND_SVC,
239 	IRQ_PEND_MCHK_EX,
240 	IRQ_PEND_COUNT
241 };
242 
243 /* We have 2M for virtio device descriptor pages. Smallest amount of
244  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
245  */
246 #define KVM_S390_MAX_VIRTIO_IRQS 87381
247 
248 /*
249  * Repressible (non-floating) machine check interrupts
250  * subclass bits in MCIC
251  */
252 #define MCHK_EXTD_BIT 58
253 #define MCHK_DEGR_BIT 56
254 #define MCHK_WARN_BIT 55
255 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
256 		       (1UL << MCHK_EXTD_BIT) | \
257 		       (1UL << MCHK_WARN_BIT))
258 
259 /* Exigent machine check interrupts subclass bits in MCIC */
260 #define MCHK_SD_BIT 63
261 #define MCHK_PD_BIT 62
262 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
263 
264 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
265 			   (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
266 			   (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
267 			   (1UL << IRQ_PEND_EXT_MALFUNC)    | \
268 			   (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
269 			   (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
270 			   (1UL << IRQ_PEND_EXT_TIMING)     | \
271 			   (1UL << IRQ_PEND_EXT_HOST)       | \
272 			   (1UL << IRQ_PEND_EXT_SERVICE)    | \
273 			   (1UL << IRQ_PEND_EXT_SERVICE_EV) | \
274 			   (1UL << IRQ_PEND_VIRTIO)         | \
275 			   (1UL << IRQ_PEND_PFAULT_INIT)    | \
276 			   (1UL << IRQ_PEND_PFAULT_DONE))
277 
278 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
279 			  (1UL << IRQ_PEND_IO_ISC_1) | \
280 			  (1UL << IRQ_PEND_IO_ISC_2) | \
281 			  (1UL << IRQ_PEND_IO_ISC_3) | \
282 			  (1UL << IRQ_PEND_IO_ISC_4) | \
283 			  (1UL << IRQ_PEND_IO_ISC_5) | \
284 			  (1UL << IRQ_PEND_IO_ISC_6) | \
285 			  (1UL << IRQ_PEND_IO_ISC_7))
286 
287 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
288 			    (1UL << IRQ_PEND_MCHK_EX))
289 
290 #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
291 			      (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
292 			      (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
293 			      (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
294 			      (1UL << IRQ_PEND_EXT_SERVICE)    | \
295 			      (1UL << IRQ_PEND_EXT_SERVICE_EV))
296 
297 struct kvm_s390_interrupt_info {
298 	struct list_head list;
299 	u64	type;
300 	union {
301 		struct kvm_s390_io_info io;
302 		struct kvm_s390_ext_info ext;
303 		struct kvm_s390_pgm_info pgm;
304 		struct kvm_s390_emerg_info emerg;
305 		struct kvm_s390_extcall_info extcall;
306 		struct kvm_s390_prefix_info prefix;
307 		struct kvm_s390_stop_info stop;
308 		struct kvm_s390_mchk_info mchk;
309 	};
310 };
311 
312 struct kvm_s390_irq_payload {
313 	struct kvm_s390_io_info io;
314 	struct kvm_s390_ext_info ext;
315 	struct kvm_s390_pgm_info pgm;
316 	struct kvm_s390_emerg_info emerg;
317 	struct kvm_s390_extcall_info extcall;
318 	struct kvm_s390_prefix_info prefix;
319 	struct kvm_s390_stop_info stop;
320 	struct kvm_s390_mchk_info mchk;
321 };
322 
323 struct kvm_s390_local_interrupt {
324 	spinlock_t lock;
325 	DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
326 	struct kvm_s390_irq_payload irq;
327 	unsigned long pending_irqs;
328 };
329 
330 #define FIRQ_LIST_IO_ISC_0 0
331 #define FIRQ_LIST_IO_ISC_1 1
332 #define FIRQ_LIST_IO_ISC_2 2
333 #define FIRQ_LIST_IO_ISC_3 3
334 #define FIRQ_LIST_IO_ISC_4 4
335 #define FIRQ_LIST_IO_ISC_5 5
336 #define FIRQ_LIST_IO_ISC_6 6
337 #define FIRQ_LIST_IO_ISC_7 7
338 #define FIRQ_LIST_PFAULT   8
339 #define FIRQ_LIST_VIRTIO   9
340 #define FIRQ_LIST_COUNT   10
341 #define FIRQ_CNTR_IO       0
342 #define FIRQ_CNTR_SERVICE  1
343 #define FIRQ_CNTR_VIRTIO   2
344 #define FIRQ_CNTR_PFAULT   3
345 #define FIRQ_MAX_COUNT     4
346 
347 /* mask the AIS mode for a given ISC */
348 #define AIS_MODE_MASK(isc) (0x80 >> isc)
349 
350 #define KVM_S390_AIS_MODE_ALL    0
351 #define KVM_S390_AIS_MODE_SINGLE 1
352 
353 struct kvm_s390_float_interrupt {
354 	unsigned long pending_irqs;
355 	unsigned long masked_irqs;
356 	spinlock_t lock;
357 	struct list_head lists[FIRQ_LIST_COUNT];
358 	int counters[FIRQ_MAX_COUNT];
359 	struct kvm_s390_mchk_info mchk;
360 	struct kvm_s390_ext_info srv_signal;
361 	int last_sleep_cpu;
362 	struct mutex ais_lock;
363 	u8 simm;
364 	u8 nimm;
365 };
366 
367 struct kvm_hw_wp_info_arch {
368 	unsigned long addr;
369 	unsigned long phys_addr;
370 	int len;
371 	char *old_data;
372 };
373 
374 struct kvm_hw_bp_info_arch {
375 	unsigned long addr;
376 	int len;
377 };
378 
379 /*
380  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
381  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
382  * arch/s390/include/uapi/asm/kvm.h
383  */
384 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
385 
386 #define guestdbg_enabled(vcpu) \
387 		(vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
388 #define guestdbg_sstep_enabled(vcpu) \
389 		(vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
390 #define guestdbg_hw_bp_enabled(vcpu) \
391 		(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
392 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
393 		(vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
394 
395 #define KVM_GUESTDBG_VALID_MASK \
396 		(KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\
397 		KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING)
398 
399 struct kvm_guestdbg_info_arch {
400 	unsigned long cr0;
401 	unsigned long cr9;
402 	unsigned long cr10;
403 	unsigned long cr11;
404 	struct kvm_hw_bp_info_arch *hw_bp_info;
405 	struct kvm_hw_wp_info_arch *hw_wp_info;
406 	int nr_hw_bp;
407 	int nr_hw_wp;
408 	unsigned long last_bp;
409 };
410 
411 struct kvm_s390_pv_vcpu {
412 	u64 handle;
413 	unsigned long stor_base;
414 };
415 
416 struct kvm_vcpu_arch {
417 	struct kvm_s390_sie_block *sie_block;
418 	/* if vsie is active, currently executed shadow sie control block */
419 	struct kvm_s390_sie_block *vsie_block;
420 	unsigned int      host_acrs[NUM_ACRS];
421 	struct gs_cb      *host_gscb;
422 	struct kvm_s390_local_interrupt local_int;
423 	struct hrtimer    ckc_timer;
424 	struct kvm_s390_pgm_info pgm;
425 	struct gmap *gmap;
426 	struct kvm_guestdbg_info_arch guestdbg;
427 	unsigned long pfault_token;
428 	unsigned long pfault_select;
429 	unsigned long pfault_compare;
430 	bool cputm_enabled;
431 	/*
432 	 * The seqcount protects updates to cputm_start and sie_block.cputm,
433 	 * this way we can have non-blocking reads with consistent values.
434 	 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
435 	 * values and to start/stop/enable/disable cpu timer accounting.
436 	 */
437 	seqcount_t cputm_seqcount;
438 	__u64 cputm_start;
439 	bool gs_enabled;
440 	bool skey_enabled;
441 	/* Indicator if the access registers have been loaded from guest */
442 	bool acrs_loaded;
443 	struct kvm_s390_pv_vcpu pv;
444 	union diag318_info diag318_info;
445 	struct kvm_s390_mmu_cache *mc;
446 };
447 
448 struct kvm_vm_stat {
449 	struct kvm_vm_stat_generic generic;
450 	u64 inject_io;
451 	u64 inject_float_mchk;
452 	u64 inject_pfault_done;
453 	u64 inject_service_signal;
454 	u64 inject_virtio;
455 	u64 aen_forward;
456 	u64 gmap_shadow_create;
457 	u64 gmap_shadow_reuse;
458 	u64 gmap_shadow_r1_entry;
459 	u64 gmap_shadow_r2_entry;
460 	u64 gmap_shadow_r3_entry;
461 	u64 gmap_shadow_sg_entry;
462 	u64 gmap_shadow_pg_entry;
463 };
464 
465 struct kvm_arch_memory_slot {
466 };
467 
468 struct s390_map_info {
469 	struct list_head list;
470 	__u64 guest_addr;
471 	__u64 addr;
472 	struct page *page;
473 };
474 
475 struct s390_io_adapter {
476 	unsigned int id;
477 	int isc;
478 	bool maskable;
479 	bool masked;
480 	bool swap;
481 	bool suppressible;
482 };
483 
484 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
485 #define MAX_S390_ADAPTER_MAPS 256
486 
487 /* maximum size of facilities and facility mask is 2k bytes */
488 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
489 #define S390_ARCH_FAC_LIST_SIZE_U64 \
490 	(S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
491 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
492 #define S390_ARCH_FAC_MASK_SIZE_U64 \
493 	(S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
494 
495 struct kvm_s390_cpu_model {
496 	/* facility mask supported by kvm & hosting machine */
497 	__u64 fac_mask[S390_ARCH_FAC_MASK_SIZE_U64];
498 	struct kvm_s390_vm_cpu_subfunc subfuncs;
499 	/* facility list requested by guest (in dma page) */
500 	__u64 *fac_list;
501 	u64 cpuid;
502 	unsigned short ibc;
503 	/* subset of available UV-features for pv-guests enabled by user space */
504 	struct kvm_s390_vm_cpu_uv_feat uv_feat_guest;
505 };
506 
507 typedef int (*crypto_hook)(struct kvm_vcpu *vcpu);
508 
509 struct kvm_s390_crypto {
510 	struct kvm_s390_crypto_cb *crycb;
511 	struct rw_semaphore pqap_hook_rwsem;
512 	crypto_hook *pqap_hook;
513 	__u32 crycbd;
514 	__u8 aes_kw;
515 	__u8 dea_kw;
516 	__u8 apie;
517 };
518 
519 #define APCB0_MASK_SIZE 1
520 struct kvm_s390_apcb0 {
521 	__u64 apm[APCB0_MASK_SIZE];		/* 0x0000 */
522 	__u64 aqm[APCB0_MASK_SIZE];		/* 0x0008 */
523 	__u64 adm[APCB0_MASK_SIZE];		/* 0x0010 */
524 	__u64 reserved18;			/* 0x0018 */
525 };
526 
527 #define APCB1_MASK_SIZE 4
528 struct kvm_s390_apcb1 {
529 	__u64 apm[APCB1_MASK_SIZE];		/* 0x0000 */
530 	__u64 aqm[APCB1_MASK_SIZE];		/* 0x0020 */
531 	__u64 adm[APCB1_MASK_SIZE];		/* 0x0040 */
532 	__u64 reserved60[4];			/* 0x0060 */
533 };
534 
535 struct kvm_s390_crypto_cb {
536 	struct kvm_s390_apcb0 apcb0;		/* 0x0000 */
537 	__u8   reserved20[0x0048 - 0x0020];	/* 0x0020 */
538 	__u8   dea_wrapping_key_mask[24];	/* 0x0048 */
539 	__u8   aes_wrapping_key_mask[32];	/* 0x0060 */
540 	struct kvm_s390_apcb1 apcb1;		/* 0x0080 */
541 };
542 
543 struct kvm_s390_gisa {
544 	union {
545 		struct { /* common to all formats */
546 			u32 next_alert;
547 			u8  ipm;
548 			u8  reserved01[2];
549 			u8  iam;
550 		};
551 		struct { /* format 0 */
552 			u32 next_alert;
553 			u8  ipm;
554 			u8  reserved01;
555 			u8  : 6;
556 			u8  g : 1;
557 			u8  c : 1;
558 			u8  iam;
559 			u8  reserved02[4];
560 			u32 airq_count;
561 		} g0;
562 		struct { /* format 1 */
563 			u32 next_alert;
564 			u8  ipm;
565 			u8  simm;
566 			u8  nimm;
567 			u8  iam;
568 			u8  aism[8];
569 			u8  : 6;
570 			u8  g : 1;
571 			u8  c : 1;
572 			u8  reserved03[11];
573 			u32 airq_count;
574 		} g1;
575 		struct {
576 			u64 word[4];
577 		} u64;
578 	};
579 };
580 
581 struct kvm_s390_gib {
582 	u32 alert_list_origin;
583 	u32 reserved01;
584 	u8:5;
585 	u8  nisc:3;
586 	u8  reserved03[3];
587 	u32 reserved04[5];
588 };
589 
590 /*
591  * sie_page2 has to be allocated as DMA because fac_list, crycb and
592  * gisa need 31bit addresses in the sie control block.
593  */
594 struct sie_page2 {
595 	__u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];	/* 0x0000 */
596 	struct kvm_s390_crypto_cb crycb;		/* 0x0800 */
597 	struct kvm_s390_gisa gisa;			/* 0x0900 */
598 	struct kvm *kvm;				/* 0x0920 */
599 	u8 reserved928[0x1000 - 0x928];			/* 0x0928 */
600 };
601 
602 struct vsie_page;
603 
604 struct kvm_s390_vsie {
605 	struct mutex mutex;
606 	struct radix_tree_root addr_to_page;
607 	int page_count;
608 	int next;
609 	struct vsie_page *pages[KVM_MAX_VCPUS];
610 };
611 
612 struct kvm_s390_gisa_iam {
613 	u8 mask;
614 	spinlock_t ref_lock;
615 	u32 ref_count[MAX_ISC + 1];
616 };
617 
618 struct kvm_s390_gisa_interrupt {
619 	struct kvm_s390_gisa *origin;
620 	struct kvm_s390_gisa_iam alert;
621 	struct hrtimer timer;
622 	u64 expires;
623 	DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
624 };
625 
626 struct kvm_s390_pv {
627 	u64 handle;
628 	u64 guest_len;
629 	unsigned long stor_base;
630 	void *stor_var;
631 	bool dumping;
632 	void *set_aside;
633 	struct list_head need_cleanup;
634 	struct mmu_notifier mmu_notifier;
635 	/* Protects against concurrent import-like operations */
636 	struct mutex import_lock;
637 };
638 
639 struct kvm_s390_mmu_cache;
640 
641 struct kvm_arch {
642 	struct esca_block *sca;
643 	debug_info_t *dbf;
644 	struct kvm_s390_float_interrupt float_int;
645 	struct kvm_device *flic;
646 	struct gmap *gmap;
647 	unsigned long mem_limit;
648 	int css_support;
649 	int use_irqchip;
650 	int use_cmma;
651 	int use_pfmfi;
652 	int use_skf;
653 	int use_zpci_interp;
654 	int user_cpu_state_ctrl;
655 	int user_sigp;
656 	int user_stsi;
657 	int user_instr0;
658 	int user_operexec;
659 	struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
660 	wait_queue_head_t ipte_wq;
661 	int ipte_lock_count;
662 	struct mutex ipte_mutex;
663 	spinlock_t start_stop_lock;
664 	struct sie_page2 *sie_page2;
665 	struct kvm_s390_cpu_model model;
666 	struct kvm_s390_crypto crypto;
667 	struct kvm_s390_vsie vsie;
668 	u8 epdx;
669 	u64 epoch;
670 	int migration_mode;
671 	atomic64_t cmma_dirty_pages;
672 	/* subset of available cpu features enabled by user space */
673 	DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
674 	/* indexed by vcpu_idx */
675 	DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
676 	struct kvm_s390_gisa_interrupt gisa_int;
677 	struct kvm_s390_pv pv;
678 	struct list_head kzdev_list;
679 	spinlock_t kzdev_list_lock;
680 	struct kvm_s390_mmu_cache *mc;
681 };
682 
683 #define KVM_HVA_ERR_BAD		(-1UL)
684 #define KVM_HVA_ERR_RO_BAD	(-2UL)
685 
686 static inline bool kvm_is_error_hva(unsigned long addr)
687 {
688 	return IS_ERR_VALUE(addr);
689 }
690 
691 #define ASYNC_PF_PER_VCPU	64
692 struct kvm_arch_async_pf {
693 	unsigned long pfault_token;
694 };
695 
696 bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
697 
698 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
699 			       struct kvm_async_pf *work);
700 
701 bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
702 				     struct kvm_async_pf *work);
703 
704 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
705 				 struct kvm_async_pf *work);
706 
707 static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {}
708 
709 void kvm_arch_crypto_clear_masks(struct kvm *kvm);
710 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
711 			       unsigned long *aqm, unsigned long *adm);
712 
713 int __sie64a(phys_addr_t sie_block_phys, struct kvm_s390_sie_block *sie_block, u64 *rsa,
714 	     unsigned long gasce);
715 
716 static inline int sie64a(struct kvm_s390_sie_block *sie_block, u64 *rsa, unsigned long gasce)
717 {
718 	return __sie64a(virt_to_phys(sie_block), sie_block, rsa, gasce);
719 }
720 
721 extern char sie_exit;
722 
723 bool kvm_s390_pv_is_protected(struct kvm *kvm);
724 bool kvm_s390_pv_cpu_is_protected(struct kvm_vcpu *vcpu);
725 
726 extern int kvm_s390_enter_exit_sie(struct kvm_s390_sie_block *scb,
727 				   u64 *gprs, unsigned long gasce);
728 
729 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
730 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
731 
732 bool kvm_s390_is_gpa_in_memslot(struct kvm *kvm, gpa_t gpa);
733 
734 static inline void kvm_arch_free_memslot(struct kvm *kvm,
735 					 struct kvm_memory_slot *slot) {}
736 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
737 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
738 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
739 		struct kvm_memory_slot *slot) {}
740 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
741 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
742 
743 #define __KVM_HAVE_ARCH_VM_FREE
744 void kvm_arch_free_vm(struct kvm *kvm);
745 
746 struct zpci_kvm_hook {
747 	int (*kvm_register)(void *opaque, struct kvm *kvm);
748 	void (*kvm_unregister)(void *opaque);
749 };
750 
751 extern struct zpci_kvm_hook zpci_kvm_hook;
752 
753 #endif
754