1 /*
2  * This program is free software; you can redistribute it and/or modify
3  * it under the terms of the GNU General Public License, version 2, as
4  * published by the Free Software Foundation.
5  *
6  * This program is distributed in the hope that it will be useful,
7  * but WITHOUT ANY WARRANTY; without even the implied warranty of
8  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
9  * GNU General Public License for more details.
10  *
11  * You should have received a copy of the GNU General Public License
12  * along with this program; if not, write to the Free Software
13  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
14  *
15  * Copyright IBM Corp. 2007
16  *
17  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18  */
19 
20 #ifndef __POWERPC_KVM_HOST_H__
21 #define __POWERPC_KVM_HOST_H__
22 
23 #include <linux/mutex.h>
24 #include <linux/hrtimer.h>
25 #include <linux/interrupt.h>
26 #include <linux/types.h>
27 #include <linux/kvm_types.h>
28 #include <linux/threads.h>
29 #include <linux/spinlock.h>
30 #include <linux/kvm_para.h>
31 #include <linux/list.h>
32 #include <linux/atomic.h>
33 #include <asm/kvm_asm.h>
34 #include <asm/processor.h>
35 #include <asm/page.h>
36 #include <asm/cacheflush.h>
37 #include <asm/hvcall.h>
38 
39 #define KVM_MAX_VCPUS		NR_CPUS
40 #define KVM_MAX_VCORES		NR_CPUS
41 #define KVM_USER_MEM_SLOTS 32
42 #define KVM_MEM_SLOTS_NUM KVM_USER_MEM_SLOTS
43 
44 #ifdef CONFIG_KVM_MMIO
45 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
46 #endif
47 
48 /* These values are internal and can be increased later */
49 #define KVM_NR_IRQCHIPS          1
50 #define KVM_IRQCHIP_NUM_PINS     256
51 
52 #include <linux/mmu_notifier.h>
53 
54 #define KVM_ARCH_WANT_MMU_NOTIFIER
55 
56 extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
57 extern int kvm_unmap_hva_range(struct kvm *kvm,
58 			       unsigned long start, unsigned long end);
59 extern int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
60 extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
61 extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
62 
63 static inline void kvm_arch_mmu_notifier_invalidate_page(struct kvm *kvm,
64 							 unsigned long address)
65 {
66 }
67 
68 #define HPTEG_CACHE_NUM			(1 << 15)
69 #define HPTEG_HASH_BITS_PTE		13
70 #define HPTEG_HASH_BITS_PTE_LONG	12
71 #define HPTEG_HASH_BITS_VPTE		13
72 #define HPTEG_HASH_BITS_VPTE_LONG	5
73 #define HPTEG_HASH_BITS_VPTE_64K	11
74 #define HPTEG_HASH_NUM_PTE		(1 << HPTEG_HASH_BITS_PTE)
75 #define HPTEG_HASH_NUM_PTE_LONG		(1 << HPTEG_HASH_BITS_PTE_LONG)
76 #define HPTEG_HASH_NUM_VPTE		(1 << HPTEG_HASH_BITS_VPTE)
77 #define HPTEG_HASH_NUM_VPTE_LONG	(1 << HPTEG_HASH_BITS_VPTE_LONG)
78 #define HPTEG_HASH_NUM_VPTE_64K		(1 << HPTEG_HASH_BITS_VPTE_64K)
79 
80 /* Physical Address Mask - allowed range of real mode RAM access */
81 #define KVM_PAM			0x0fffffffffffffffULL
82 
83 struct lppaca;
84 struct slb_shadow;
85 struct dtl_entry;
86 
87 struct kvmppc_vcpu_book3s;
88 struct kvmppc_book3s_shadow_vcpu;
89 
90 struct kvm_vm_stat {
91 	u32 remote_tlb_flush;
92 };
93 
94 struct kvm_vcpu_stat {
95 	u32 sum_exits;
96 	u32 mmio_exits;
97 	u32 signal_exits;
98 	u32 light_exits;
99 	/* Account for special types of light exits: */
100 	u32 itlb_real_miss_exits;
101 	u32 itlb_virt_miss_exits;
102 	u32 dtlb_real_miss_exits;
103 	u32 dtlb_virt_miss_exits;
104 	u32 syscall_exits;
105 	u32 isi_exits;
106 	u32 dsi_exits;
107 	u32 emulated_inst_exits;
108 	u32 dec_exits;
109 	u32 ext_intr_exits;
110 	u32 halt_successful_poll;
111 	u32 halt_wakeup;
112 	u32 dbell_exits;
113 	u32 gdbell_exits;
114 	u32 ld;
115 	u32 st;
116 #ifdef CONFIG_PPC_BOOK3S
117 	u32 pf_storage;
118 	u32 pf_instruc;
119 	u32 sp_storage;
120 	u32 sp_instruc;
121 	u32 queue_intr;
122 	u32 ld_slow;
123 	u32 st_slow;
124 #endif
125 };
126 
127 enum kvm_exit_types {
128 	MMIO_EXITS,
129 	SIGNAL_EXITS,
130 	ITLB_REAL_MISS_EXITS,
131 	ITLB_VIRT_MISS_EXITS,
132 	DTLB_REAL_MISS_EXITS,
133 	DTLB_VIRT_MISS_EXITS,
134 	SYSCALL_EXITS,
135 	ISI_EXITS,
136 	DSI_EXITS,
137 	EMULATED_INST_EXITS,
138 	EMULATED_MTMSRWE_EXITS,
139 	EMULATED_WRTEE_EXITS,
140 	EMULATED_MTSPR_EXITS,
141 	EMULATED_MFSPR_EXITS,
142 	EMULATED_MTMSR_EXITS,
143 	EMULATED_MFMSR_EXITS,
144 	EMULATED_TLBSX_EXITS,
145 	EMULATED_TLBWE_EXITS,
146 	EMULATED_RFI_EXITS,
147 	EMULATED_RFCI_EXITS,
148 	EMULATED_RFDI_EXITS,
149 	DEC_EXITS,
150 	EXT_INTR_EXITS,
151 	HALT_WAKEUP,
152 	USR_PR_INST,
153 	FP_UNAVAIL,
154 	DEBUG_EXITS,
155 	TIMEINGUEST,
156 	DBELL_EXITS,
157 	GDBELL_EXITS,
158 	__NUMBER_OF_KVM_EXIT_TYPES
159 };
160 
161 /* allow access to big endian 32bit upper/lower parts and 64bit var */
162 struct kvmppc_exit_timing {
163 	union {
164 		u64 tv64;
165 		struct {
166 			u32 tbu, tbl;
167 		} tv32;
168 	};
169 };
170 
171 struct kvmppc_pginfo {
172 	unsigned long pfn;
173 	atomic_t refcnt;
174 };
175 
176 struct kvmppc_spapr_tce_table {
177 	struct list_head list;
178 	struct kvm *kvm;
179 	u64 liobn;
180 	u32 window_size;
181 	struct page *pages[0];
182 };
183 
184 /* XICS components, defined in book3s_xics.c */
185 struct kvmppc_xics;
186 struct kvmppc_icp;
187 
188 /*
189  * The reverse mapping array has one entry for each HPTE,
190  * which stores the guest's view of the second word of the HPTE
191  * (including the guest physical address of the mapping),
192  * plus forward and backward pointers in a doubly-linked ring
193  * of HPTEs that map the same host page.  The pointers in this
194  * ring are 32-bit HPTE indexes, to save space.
195  */
196 struct revmap_entry {
197 	unsigned long guest_rpte;
198 	unsigned int forw, back;
199 };
200 
201 /*
202  * We use the top bit of each memslot->arch.rmap entry as a lock bit,
203  * and bit 32 as a present flag.  The bottom 32 bits are the
204  * index in the guest HPT of a HPTE that points to the page.
205  */
206 #define KVMPPC_RMAP_LOCK_BIT	63
207 #define KVMPPC_RMAP_RC_SHIFT	32
208 #define KVMPPC_RMAP_REFERENCED	(HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
209 #define KVMPPC_RMAP_CHANGED	(HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
210 #define KVMPPC_RMAP_PRESENT	0x100000000ul
211 #define KVMPPC_RMAP_INDEX	0xfffffffful
212 
213 struct kvm_arch_memory_slot {
214 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
215 	unsigned long *rmap;
216 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
217 };
218 
219 struct kvm_arch {
220 	unsigned int lpid;
221 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
222 	unsigned long hpt_virt;
223 	struct revmap_entry *revmap;
224 	unsigned int host_lpid;
225 	unsigned long host_lpcr;
226 	unsigned long sdr1;
227 	unsigned long host_sdr1;
228 	int tlbie_lock;
229 	unsigned long lpcr;
230 	unsigned long vrma_slb_v;
231 	int hpte_setup_done;
232 	u32 hpt_order;
233 	atomic_t vcpus_running;
234 	u32 online_vcores;
235 	unsigned long hpt_npte;
236 	unsigned long hpt_mask;
237 	atomic_t hpte_mod_interest;
238 	cpumask_t need_tlb_flush;
239 	int hpt_cma_alloc;
240 	struct dentry *debugfs_dir;
241 	struct dentry *htab_dentry;
242 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
243 #ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
244 	struct mutex hpt_mutex;
245 #endif
246 #ifdef CONFIG_PPC_BOOK3S_64
247 	struct list_head spapr_tce_tables;
248 	struct list_head rtas_tokens;
249 	DECLARE_BITMAP(enabled_hcalls, MAX_HCALL_OPCODE/4 + 1);
250 #endif
251 #ifdef CONFIG_KVM_MPIC
252 	struct openpic *mpic;
253 #endif
254 #ifdef CONFIG_KVM_XICS
255 	struct kvmppc_xics *xics;
256 #endif
257 	struct kvmppc_ops *kvm_ops;
258 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
259 	/* This array can grow quite large, keep it at the end */
260 	struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
261 #endif
262 };
263 
264 /*
265  * Struct for a virtual core.
266  * Note: entry_exit_map combines a bitmap of threads that have entered
267  * in the bottom 8 bits and a bitmap of threads that have exited in the
268  * next 8 bits.  This is so that we can atomically set the entry bit
269  * iff the exit map is 0 without taking a lock.
270  */
271 struct kvmppc_vcore {
272 	int n_runnable;
273 	int num_threads;
274 	int entry_exit_map;
275 	int napping_threads;
276 	int first_vcpuid;
277 	u16 pcpu;
278 	u16 last_cpu;
279 	u8 vcore_state;
280 	u8 in_guest;
281 	struct list_head runnable_threads;
282 	spinlock_t lock;
283 	wait_queue_head_t wq;
284 	spinlock_t stoltb_lock;	/* protects stolen_tb and preempt_tb */
285 	u64 stolen_tb;
286 	u64 preempt_tb;
287 	struct kvm_vcpu *runner;
288 	struct kvm *kvm;
289 	u64 tb_offset;		/* guest timebase - host timebase */
290 	ulong lpcr;
291 	u32 arch_compat;
292 	ulong pcr;
293 	ulong dpdes;		/* doorbell state (POWER8) */
294 	void *mpp_buffer; /* Micro Partition Prefetch buffer */
295 	bool mpp_buffer_is_valid;
296 	ulong conferring_threads;
297 };
298 
299 #define VCORE_ENTRY_MAP(vc)	((vc)->entry_exit_map & 0xff)
300 #define VCORE_EXIT_MAP(vc)	((vc)->entry_exit_map >> 8)
301 #define VCORE_IS_EXITING(vc)	(VCORE_EXIT_MAP(vc) != 0)
302 
303 /* Values for vcore_state */
304 #define VCORE_INACTIVE	0
305 #define VCORE_SLEEPING	1
306 #define VCORE_PREEMPT	2
307 #define VCORE_RUNNING	3
308 #define VCORE_EXITING	4
309 
310 /*
311  * Struct used to manage memory for a virtual processor area
312  * registered by a PAPR guest.  There are three types of area
313  * that a guest can register.
314  */
315 struct kvmppc_vpa {
316 	unsigned long gpa;	/* Current guest phys addr */
317 	void *pinned_addr;	/* Address in kernel linear mapping */
318 	void *pinned_end;	/* End of region */
319 	unsigned long next_gpa;	/* Guest phys addr for update */
320 	unsigned long len;	/* Number of bytes required */
321 	u8 update_pending;	/* 1 => update pinned_addr from next_gpa */
322 	bool dirty;		/* true => area has been modified by kernel */
323 };
324 
325 struct kvmppc_pte {
326 	ulong eaddr;
327 	u64 vpage;
328 	ulong raddr;
329 	bool may_read		: 1;
330 	bool may_write		: 1;
331 	bool may_execute	: 1;
332 	u8 page_size;		/* MMU_PAGE_xxx */
333 };
334 
335 struct kvmppc_mmu {
336 	/* book3s_64 only */
337 	void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
338 	u64  (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
339 	u64  (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
340 	void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
341 	void (*slbia)(struct kvm_vcpu *vcpu);
342 	/* book3s */
343 	void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
344 	u32  (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
345 	int  (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr,
346 		      struct kvmppc_pte *pte, bool data, bool iswrite);
347 	void (*reset_msr)(struct kvm_vcpu *vcpu);
348 	void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
349 	int  (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
350 	u64  (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
351 	bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
352 };
353 
354 struct kvmppc_slb {
355 	u64 esid;
356 	u64 vsid;
357 	u64 orige;
358 	u64 origv;
359 	bool valid	: 1;
360 	bool Ks		: 1;
361 	bool Kp		: 1;
362 	bool nx		: 1;
363 	bool large	: 1;	/* PTEs are 16MB */
364 	bool tb		: 1;	/* 1TB segment */
365 	bool class	: 1;
366 	u8 base_page_size;	/* MMU_PAGE_xxx */
367 };
368 
369 /* Struct used to accumulate timing information in HV real mode code */
370 struct kvmhv_tb_accumulator {
371 	u64	seqcount;	/* used to synchronize access, also count * 2 */
372 	u64	tb_total;	/* total time in timebase ticks */
373 	u64	tb_min;		/* min time */
374 	u64	tb_max;		/* max time */
375 };
376 
377 # ifdef CONFIG_PPC_FSL_BOOK3E
378 #define KVMPPC_BOOKE_IAC_NUM	2
379 #define KVMPPC_BOOKE_DAC_NUM	2
380 # else
381 #define KVMPPC_BOOKE_IAC_NUM	4
382 #define KVMPPC_BOOKE_DAC_NUM	2
383 # endif
384 #define KVMPPC_BOOKE_MAX_IAC	4
385 #define KVMPPC_BOOKE_MAX_DAC	2
386 
387 /* KVMPPC_EPR_USER takes precedence over KVMPPC_EPR_KERNEL */
388 #define KVMPPC_EPR_NONE		0 /* EPR not supported */
389 #define KVMPPC_EPR_USER		1 /* exit to userspace to fill EPR */
390 #define KVMPPC_EPR_KERNEL	2 /* in-kernel irqchip */
391 
392 #define KVMPPC_IRQ_DEFAULT	0
393 #define KVMPPC_IRQ_MPIC		1
394 #define KVMPPC_IRQ_XICS		2
395 
396 struct openpic;
397 
398 struct kvm_vcpu_arch {
399 	ulong host_stack;
400 	u32 host_pid;
401 #ifdef CONFIG_PPC_BOOK3S
402 	struct kvmppc_slb slb[64];
403 	int slb_max;		/* 1 + index of last valid entry in slb[] */
404 	int slb_nr;		/* total number of entries in SLB */
405 	struct kvmppc_mmu mmu;
406 	struct kvmppc_vcpu_book3s *book3s;
407 #endif
408 #ifdef CONFIG_PPC_BOOK3S_32
409 	struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
410 #endif
411 
412 	ulong gpr[32];
413 
414 	struct thread_fp_state fp;
415 
416 #ifdef CONFIG_SPE
417 	ulong evr[32];
418 	ulong spefscr;
419 	ulong host_spefscr;
420 	u64 acc;
421 #endif
422 #ifdef CONFIG_ALTIVEC
423 	struct thread_vr_state vr;
424 #endif
425 
426 #ifdef CONFIG_KVM_BOOKE_HV
427 	u32 host_mas4;
428 	u32 host_mas6;
429 	u32 shadow_epcr;
430 	u32 shadow_msrp;
431 	u32 eplc;
432 	u32 epsc;
433 	u32 oldpir;
434 #endif
435 
436 #if defined(CONFIG_BOOKE)
437 #if defined(CONFIG_KVM_BOOKE_HV) || defined(CONFIG_64BIT)
438 	u32 epcr;
439 #endif
440 #endif
441 
442 #ifdef CONFIG_PPC_BOOK3S
443 	/* For Gekko paired singles */
444 	u32 qpr[32];
445 #endif
446 
447 	ulong pc;
448 	ulong ctr;
449 	ulong lr;
450 #ifdef CONFIG_PPC_BOOK3S
451 	ulong tar;
452 #endif
453 
454 	ulong xer;
455 	u32 cr;
456 
457 #ifdef CONFIG_PPC_BOOK3S
458 	ulong hflags;
459 	ulong guest_owned_ext;
460 	ulong purr;
461 	ulong spurr;
462 	ulong ic;
463 	ulong vtb;
464 	ulong dscr;
465 	ulong amr;
466 	ulong uamor;
467 	ulong iamr;
468 	u32 ctrl;
469 	u32 dabrx;
470 	ulong dabr;
471 	ulong dawr;
472 	ulong dawrx;
473 	ulong ciabr;
474 	ulong cfar;
475 	ulong ppr;
476 	ulong pspb;
477 	ulong fscr;
478 	ulong shadow_fscr;
479 	ulong ebbhr;
480 	ulong ebbrr;
481 	ulong bescr;
482 	ulong csigr;
483 	ulong tacr;
484 	ulong tcscr;
485 	ulong acop;
486 	ulong wort;
487 	ulong shadow_srr1;
488 #endif
489 	u32 vrsave; /* also USPRG0 */
490 	u32 mmucr;
491 	/* shadow_msr is unused for BookE HV */
492 	ulong shadow_msr;
493 	ulong csrr0;
494 	ulong csrr1;
495 	ulong dsrr0;
496 	ulong dsrr1;
497 	ulong mcsrr0;
498 	ulong mcsrr1;
499 	ulong mcsr;
500 	u32 dec;
501 #ifdef CONFIG_BOOKE
502 	u32 decar;
503 #endif
504 	/* Time base value when we entered the guest */
505 	u64 entry_tb;
506 	u64 entry_vtb;
507 	u64 entry_ic;
508 	u32 tcr;
509 	ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
510 	u32 ivor[64];
511 	ulong ivpr;
512 	u32 pvr;
513 
514 	u32 shadow_pid;
515 	u32 shadow_pid1;
516 	u32 pid;
517 	u32 swap_pid;
518 
519 	u32 ccr0;
520 	u32 ccr1;
521 	u32 dbsr;
522 
523 	u64 mmcr[5];
524 	u32 pmc[8];
525 	u32 spmc[2];
526 	u64 siar;
527 	u64 sdar;
528 	u64 sier;
529 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
530 	u64 tfhar;
531 	u64 texasr;
532 	u64 tfiar;
533 
534 	u32 cr_tm;
535 	u64 lr_tm;
536 	u64 ctr_tm;
537 	u64 amr_tm;
538 	u64 ppr_tm;
539 	u64 dscr_tm;
540 	u64 tar_tm;
541 
542 	ulong gpr_tm[32];
543 
544 	struct thread_fp_state fp_tm;
545 
546 	struct thread_vr_state vr_tm;
547 	u32 vrsave_tm; /* also USPRG0 */
548 
549 #endif
550 
551 #ifdef CONFIG_KVM_EXIT_TIMING
552 	struct mutex exit_timing_lock;
553 	struct kvmppc_exit_timing timing_exit;
554 	struct kvmppc_exit_timing timing_last_enter;
555 	u32 last_exit_type;
556 	u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
557 	u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
558 	u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
559 	u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
560 	u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
561 	u64 timing_last_exit;
562 	struct dentry *debugfs_exit_timing;
563 #endif
564 
565 #ifdef CONFIG_PPC_BOOK3S
566 	ulong fault_dar;
567 	u32 fault_dsisr;
568 	unsigned long intr_msr;
569 #endif
570 
571 #ifdef CONFIG_BOOKE
572 	ulong fault_dear;
573 	ulong fault_esr;
574 	ulong queued_dear;
575 	ulong queued_esr;
576 	spinlock_t wdt_lock;
577 	struct timer_list wdt_timer;
578 	u32 tlbcfg[4];
579 	u32 tlbps[4];
580 	u32 mmucfg;
581 	u32 eptcfg;
582 	u32 epr;
583 	u64 sprg9;
584 	u32 pwrmgtcr0;
585 	u32 crit_save;
586 	/* guest debug registers*/
587 	struct debug_reg dbg_reg;
588 #endif
589 	gpa_t paddr_accessed;
590 	gva_t vaddr_accessed;
591 	pgd_t *pgdir;
592 
593 	u8 io_gpr; /* GPR used as IO source/target */
594 	u8 mmio_host_swabbed;
595 	u8 mmio_sign_extend;
596 	u8 osi_needed;
597 	u8 osi_enabled;
598 	u8 papr_enabled;
599 	u8 watchdog_enabled;
600 	u8 sane;
601 	u8 cpu_type;
602 	u8 hcall_needed;
603 	u8 epr_flags; /* KVMPPC_EPR_xxx */
604 	u8 epr_needed;
605 
606 	u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
607 
608 	struct hrtimer dec_timer;
609 	u64 dec_jiffies;
610 	u64 dec_expires;
611 	unsigned long pending_exceptions;
612 	u8 ceded;
613 	u8 prodded;
614 	u32 last_inst;
615 
616 	wait_queue_head_t *wqp;
617 	struct kvmppc_vcore *vcore;
618 	int ret;
619 	int trap;
620 	int state;
621 	int ptid;
622 	bool timer_running;
623 	wait_queue_head_t cpu_run;
624 
625 	struct kvm_vcpu_arch_shared *shared;
626 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
627 	bool shared_big_endian;
628 #endif
629 	unsigned long magic_page_pa; /* phys addr to map the magic page to */
630 	unsigned long magic_page_ea; /* effect. addr to map the magic page to */
631 	bool disable_kernel_nx;
632 
633 	int irq_type;		/* one of KVM_IRQ_* */
634 	int irq_cpu_id;
635 	struct openpic *mpic;	/* KVM_IRQ_MPIC */
636 #ifdef CONFIG_KVM_XICS
637 	struct kvmppc_icp *icp; /* XICS presentation controller */
638 #endif
639 
640 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
641 	struct kvm_vcpu_arch_shared shregs;
642 
643 	unsigned long pgfault_addr;
644 	long pgfault_index;
645 	unsigned long pgfault_hpte[2];
646 
647 	struct list_head run_list;
648 	struct task_struct *run_task;
649 	struct kvm_run *kvm_run;
650 
651 	spinlock_t vpa_update_lock;
652 	struct kvmppc_vpa vpa;
653 	struct kvmppc_vpa dtl;
654 	struct dtl_entry *dtl_ptr;
655 	unsigned long dtl_index;
656 	u64 stolen_logged;
657 	struct kvmppc_vpa slb_shadow;
658 
659 	spinlock_t tbacct_lock;
660 	u64 busy_stolen;
661 	u64 busy_preempt;
662 
663 	u32 emul_inst;
664 #endif
665 
666 #ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING
667 	struct kvmhv_tb_accumulator *cur_activity;	/* What we're timing */
668 	u64	cur_tb_start;			/* when it started */
669 	struct kvmhv_tb_accumulator rm_entry;	/* real-mode entry code */
670 	struct kvmhv_tb_accumulator rm_intr;	/* real-mode intr handling */
671 	struct kvmhv_tb_accumulator rm_exit;	/* real-mode exit code */
672 	struct kvmhv_tb_accumulator guest_time;	/* guest execution */
673 	struct kvmhv_tb_accumulator cede_time;	/* time napping inside guest */
674 
675 	struct dentry *debugfs_dir;
676 	struct dentry *debugfs_timings;
677 #endif /* CONFIG_KVM_BOOK3S_HV_EXIT_TIMING */
678 };
679 
680 #define VCPU_FPR(vcpu, i)	(vcpu)->arch.fp.fpr[i][TS_FPROFFSET]
681 
682 /* Values for vcpu->arch.state */
683 #define KVMPPC_VCPU_NOTREADY		0
684 #define KVMPPC_VCPU_RUNNABLE		1
685 #define KVMPPC_VCPU_BUSY_IN_HOST	2
686 
687 /* Values for vcpu->arch.io_gpr */
688 #define KVM_MMIO_REG_MASK	0x001f
689 #define KVM_MMIO_REG_EXT_MASK	0xffe0
690 #define KVM_MMIO_REG_GPR	0x0000
691 #define KVM_MMIO_REG_FPR	0x0020
692 #define KVM_MMIO_REG_QPR	0x0040
693 #define KVM_MMIO_REG_FQPR	0x0060
694 
695 #define __KVM_HAVE_ARCH_WQP
696 #define __KVM_HAVE_CREATE_DEVICE
697 
698 static inline void kvm_arch_hardware_disable(void) {}
699 static inline void kvm_arch_hardware_unsetup(void) {}
700 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
701 static inline void kvm_arch_memslots_updated(struct kvm *kvm) {}
702 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
703 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
704 static inline void kvm_arch_exit(void) {}
705 
706 #endif /* __POWERPC_KVM_HOST_H__ */
707