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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 *
4 * Copyright SUSE Linux Products GmbH 2009
5 *
6 * Authors: Alexander Graf <agraf@suse.de>
7 */
8
9#ifndef __ASM_KVM_BOOK3S_H__
10#define __ASM_KVM_BOOK3S_H__
11
12#include <linux/types.h>
13#include <linux/kvm_host.h>
14#include <asm/kvm_book3s_asm.h>
15#include <asm/guest-state-buffer.h>
16
17struct kvmppc_bat {
18 u64 raw;
19 u32 bepi;
20 u32 bepi_mask;
21 u32 brpn;
22 u8 wimg;
23 u8 pp;
24 bool vs : 1;
25 bool vp : 1;
26};
27
28struct kvmppc_sid_map {
29 u64 guest_vsid;
30 u64 guest_esid;
31 u64 host_vsid;
32 bool valid : 1;
33};
34
35#define SID_MAP_BITS 9
36#define SID_MAP_NUM (1 << SID_MAP_BITS)
37#define SID_MAP_MASK (SID_MAP_NUM - 1)
38
39#ifdef CONFIG_PPC_BOOK3S_64
40#define SID_CONTEXTS 1
41#else
42#define SID_CONTEXTS 128
43#define VSID_POOL_SIZE (SID_CONTEXTS * 16)
44#endif
45
46struct hpte_cache {
47 struct hlist_node list_pte;
48 struct hlist_node list_pte_long;
49 struct hlist_node list_vpte;
50 struct hlist_node list_vpte_long;
51#ifdef CONFIG_PPC_BOOK3S_64
52 struct hlist_node list_vpte_64k;
53#endif
54 struct rcu_head rcu_head;
55 u64 host_vpn;
56 u64 pfn;
57 ulong slot;
58 struct kvmppc_pte pte;
59 int pagesize;
60};
61
62/*
63 * Struct for a virtual core.
64 * Note: entry_exit_map combines a bitmap of threads that have entered
65 * in the bottom 8 bits and a bitmap of threads that have exited in the
66 * next 8 bits. This is so that we can atomically set the entry bit
67 * iff the exit map is 0 without taking a lock.
68 */
69struct kvmppc_vcore {
70 int n_runnable;
71 int num_threads;
72 int entry_exit_map;
73 int napping_threads;
74 int first_vcpuid;
75 u16 pcpu;
76 u16 last_cpu;
77 u8 vcore_state;
78 u8 in_guest;
79 struct kvm_vcpu *runnable_threads[MAX_SMT_THREADS];
80 struct list_head preempt_list;
81 spinlock_t lock;
82 struct rcuwait wait;
83 spinlock_t stoltb_lock; /* protects stolen_tb and preempt_tb */
84 u64 stolen_tb;
85 u64 preempt_tb;
86 struct kvm_vcpu *runner;
87 struct kvm *kvm;
88 u64 tb_offset; /* guest timebase - host timebase */
89 u64 tb_offset_applied; /* timebase offset currently in force */
90 ulong lpcr;
91 u32 arch_compat;
92 ulong pcr;
93 ulong dpdes; /* doorbell state (POWER8) */
94 ulong vtb; /* virtual timebase */
95 ulong conferring_threads;
96 unsigned int halt_poll_ns;
97 atomic_t online_count;
98};
99
100struct kvmppc_vcpu_book3s {
101 struct kvmppc_sid_map sid_map[SID_MAP_NUM];
102 struct {
103 u64 esid;
104 u64 vsid;
105 } slb_shadow[64];
106 u8 slb_shadow_max;
107 struct kvmppc_bat ibat[8];
108 struct kvmppc_bat dbat[8];
109 u64 hid[6];
110 u64 gqr[8];
111 u64 sdr1;
112 u64 hior;
113 u64 msr_mask;
114 u64 vtb;
115#ifdef CONFIG_PPC_BOOK3S_32
116 u32 vsid_pool[VSID_POOL_SIZE];
117 u32 vsid_next;
118#else
119 u64 proto_vsid_first;
120 u64 proto_vsid_max;
121 u64 proto_vsid_next;
122#endif
123 int context_id[SID_CONTEXTS];
124
125 bool hior_explicit; /* HIOR is set by ioctl, not PVR */
126
127 struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE];
128 struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG];
129 struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE];
130 struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG];
131#ifdef CONFIG_PPC_BOOK3S_64
132 struct hlist_head hpte_hash_vpte_64k[HPTEG_HASH_NUM_VPTE_64K];
133#endif
134 int hpte_cache_count;
135 spinlock_t mmu_lock;
136};
137
138#define VSID_REAL 0x07ffffffffc00000ULL
139#define VSID_BAT 0x07ffffffffb00000ULL
140#define VSID_64K 0x0800000000000000ULL
141#define VSID_1T 0x1000000000000000ULL
142#define VSID_REAL_DR 0x2000000000000000ULL
143#define VSID_REAL_IR 0x4000000000000000ULL
144#define VSID_PR 0x8000000000000000ULL
145
146extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
147extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
148extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
149extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
150extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
151extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
152extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu);
153extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
154 bool iswrite);
155extern void kvmppc_mmu_unmap_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte);
156extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
157extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size);
158extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
159extern int kvmppc_book3s_hv_page_fault(struct kvm_vcpu *vcpu,
160 unsigned long addr, unsigned long status);
161extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr,
162 unsigned long slb_v, unsigned long valid);
163extern int kvmppc_hv_emulate_mmio(struct kvm_vcpu *vcpu,
164 unsigned long gpa, gva_t ea, int is_store);
165
166extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
167extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu);
168extern void kvmppc_mmu_hpte_cache_free(struct hpte_cache *pte);
169extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu);
170extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu);
171extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
172extern int kvmppc_mmu_hpte_sysinit(void);
173extern void kvmppc_mmu_hpte_sysexit(void);
174extern int kvmppc_mmu_hv_init(void);
175extern int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hc);
176
177extern int kvmppc_book3s_radix_page_fault(struct kvm_vcpu *vcpu,
178 unsigned long ea, unsigned long dsisr);
179extern unsigned long __kvmhv_copy_tofrom_guest_radix(int lpid, int pid,
180 gva_t eaddr, void *to, void *from,
181 unsigned long n);
182extern long kvmhv_copy_from_guest_radix(struct kvm_vcpu *vcpu, gva_t eaddr,
183 void *to, unsigned long n);
184extern long kvmhv_copy_to_guest_radix(struct kvm_vcpu *vcpu, gva_t eaddr,
185 void *from, unsigned long n);
186extern int kvmppc_mmu_walk_radix_tree(struct kvm_vcpu *vcpu, gva_t eaddr,
187 struct kvmppc_pte *gpte, u64 root,
188 u64 *pte_ret_p);
189extern int kvmppc_mmu_radix_translate_table(struct kvm_vcpu *vcpu, gva_t eaddr,
190 struct kvmppc_pte *gpte, u64 table,
191 int table_index, u64 *pte_ret_p);
192extern int kvmppc_mmu_radix_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
193 struct kvmppc_pte *gpte, bool data, bool iswrite);
194extern void kvmppc_radix_tlbie_page(struct kvm *kvm, unsigned long addr,
195 unsigned int pshift, u64 lpid);
196extern void kvmppc_unmap_pte(struct kvm *kvm, pte_t *pte, unsigned long gpa,
197 unsigned int shift,
198 const struct kvm_memory_slot *memslot,
199 u64 lpid);
200extern bool kvmppc_hv_handle_set_rc(struct kvm *kvm, bool nested,
201 bool writing, unsigned long gpa,
202 u64 lpid);
203extern int kvmppc_book3s_instantiate_page(struct kvm_vcpu *vcpu,
204 unsigned long gpa,
205 struct kvm_memory_slot *memslot,
206 bool writing, bool kvm_ro,
207 pte_t *inserted_pte, unsigned int *levelp);
208extern int kvmppc_init_vm_radix(struct kvm *kvm);
209extern void kvmppc_free_radix(struct kvm *kvm);
210extern void kvmppc_free_pgtable_radix(struct kvm *kvm, pgd_t *pgd,
211 u64 lpid);
212extern int kvmppc_radix_init(void);
213extern void kvmppc_radix_exit(void);
214extern void kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
215 unsigned long gfn);
216extern bool kvm_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
217 unsigned long gfn);
218extern bool kvm_test_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
219 unsigned long gfn);
220extern long kvmppc_hv_get_dirty_log_radix(struct kvm *kvm,
221 struct kvm_memory_slot *memslot, unsigned long *map);
222extern void kvmppc_radix_flush_memslot(struct kvm *kvm,
223 const struct kvm_memory_slot *memslot);
224extern int kvmhv_get_rmmu_info(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
225
226/* XXX remove this export when load_last_inst() is generic */
227extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
228extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
229extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
230 unsigned int vec);
231extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags);
232extern void kvmppc_trigger_fac_interrupt(struct kvm_vcpu *vcpu, ulong fac);
233extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
234 bool upper, u32 val);
235extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
236extern int kvmppc_emulate_paired_single(struct kvm_vcpu *vcpu);
237extern kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa,
238 bool writing, bool *writable);
239extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev,
240 unsigned long *rmap, long pte_index, int realmode);
241extern void kvmppc_update_dirty_map(const struct kvm_memory_slot *memslot,
242 unsigned long gfn, unsigned long psize);
243extern void kvmppc_invalidate_hpte(struct kvm *kvm, __be64 *hptep,
244 unsigned long pte_index);
245void kvmppc_clear_ref_hpte(struct kvm *kvm, __be64 *hptep,
246 unsigned long pte_index);
247extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
248 unsigned long *nb_ret);
249extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr,
250 unsigned long gpa, bool dirty);
251extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
252 long pte_index, unsigned long pteh, unsigned long ptel,
253 pgd_t *pgdir, bool realmode, unsigned long *idx_ret);
254extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
255 unsigned long pte_index, unsigned long avpn,
256 unsigned long *hpret);
257extern long kvmppc_hv_get_dirty_log_hpt(struct kvm *kvm,
258 struct kvm_memory_slot *memslot, unsigned long *map);
259extern void kvmppc_harvest_vpa_dirty(struct kvmppc_vpa *vpa,
260 struct kvm_memory_slot *memslot,
261 unsigned long *map);
262extern unsigned long kvmppc_filter_lpcr_hv(struct kvm *kvm,
263 unsigned long lpcr);
264extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr,
265 unsigned long mask);
266extern void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr);
267
268extern int kvmhv_p9_tm_emulation_early(struct kvm_vcpu *vcpu);
269extern int kvmhv_p9_tm_emulation(struct kvm_vcpu *vcpu);
270extern void kvmhv_emulate_tm_rollback(struct kvm_vcpu *vcpu);
271
272extern void kvmppc_entry_trampoline(void);
273extern void kvmppc_hv_entry_trampoline(void);
274extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
275extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
276extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
277extern void kvmppc_pr_init_default_hcalls(struct kvm *kvm);
278extern int kvmppc_hcall_impl_pr(unsigned long cmd);
279extern int kvmppc_hcall_impl_hv_realmode(unsigned long cmd);
280extern void kvmppc_copy_to_svcpu(struct kvm_vcpu *vcpu);
281extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu);
282
283long kvmppc_read_intr(void);
284void kvmppc_set_msr_hv(struct kvm_vcpu *vcpu, u64 msr);
285void kvmppc_inject_interrupt_hv(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags);
286
287#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
288void kvmppc_save_tm_pr(struct kvm_vcpu *vcpu);
289void kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu);
290void kvmppc_save_tm_sprs(struct kvm_vcpu *vcpu);
291void kvmppc_restore_tm_sprs(struct kvm_vcpu *vcpu);
292#else
293static inline void kvmppc_save_tm_pr(struct kvm_vcpu *vcpu) {}
294static inline void kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu) {}
295static inline void kvmppc_save_tm_sprs(struct kvm_vcpu *vcpu) {}
296static inline void kvmppc_restore_tm_sprs(struct kvm_vcpu *vcpu) {}
297#endif
298
299extern unsigned long nested_capabilities;
300long kvmhv_nested_init(void);
301void kvmhv_nested_exit(void);
302void kvmhv_vm_nested_init(struct kvm *kvm);
303long kvmhv_set_partition_table(struct kvm_vcpu *vcpu);
304long kvmhv_copy_tofrom_guest_nested(struct kvm_vcpu *vcpu);
305void kvmhv_set_ptbl_entry(u64 lpid, u64 dw0, u64 dw1);
306void kvmhv_release_all_nested(struct kvm *kvm);
307long kvmhv_enter_nested_guest(struct kvm_vcpu *vcpu);
308long kvmhv_do_nested_tlbie(struct kvm_vcpu *vcpu);
309long do_h_rpt_invalidate_pat(struct kvm_vcpu *vcpu, unsigned long lpid,
310 unsigned long type, unsigned long pg_sizes,
311 unsigned long start, unsigned long end);
312int kvmhv_run_single_vcpu(struct kvm_vcpu *vcpu,
313 u64 time_limit, unsigned long lpcr);
314void kvmhv_save_hv_regs(struct kvm_vcpu *vcpu, struct hv_guest_state *hr);
315void kvmhv_restore_hv_return_state(struct kvm_vcpu *vcpu,
316 struct hv_guest_state *hr);
317long int kvmhv_nested_page_fault(struct kvm_vcpu *vcpu);
318
319void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac);
320
321
322#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
323
324extern struct static_key_false __kvmhv_is_nestedv2;
325
326static inline bool kvmhv_is_nestedv2(void)
327{
328 return static_branch_unlikely(&__kvmhv_is_nestedv2);
329}
330
331static inline bool kvmhv_is_nestedv1(void)
332{
333 return !static_branch_likely(&__kvmhv_is_nestedv2);
334}
335
336#else
337
338static inline bool kvmhv_is_nestedv2(void)
339{
340 return false;
341}
342
343static inline bool kvmhv_is_nestedv1(void)
344{
345 return false;
346}
347
348#endif
349
350int __kvmhv_nestedv2_reload_ptregs(struct kvm_vcpu *vcpu, struct pt_regs *regs);
351int __kvmhv_nestedv2_mark_dirty_ptregs(struct kvm_vcpu *vcpu, struct pt_regs *regs);
352int __kvmhv_nestedv2_mark_dirty(struct kvm_vcpu *vcpu, u16 iden);
353int __kvmhv_nestedv2_cached_reload(struct kvm_vcpu *vcpu, u16 iden);
354
355static inline int kvmhv_nestedv2_reload_ptregs(struct kvm_vcpu *vcpu,
356 struct pt_regs *regs)
357{
358 if (kvmhv_is_nestedv2())
359 return __kvmhv_nestedv2_reload_ptregs(vcpu, regs);
360 return 0;
361}
362static inline int kvmhv_nestedv2_mark_dirty_ptregs(struct kvm_vcpu *vcpu,
363 struct pt_regs *regs)
364{
365 if (kvmhv_is_nestedv2())
366 return __kvmhv_nestedv2_mark_dirty_ptregs(vcpu, regs);
367 return 0;
368}
369
370static inline int kvmhv_nestedv2_mark_dirty(struct kvm_vcpu *vcpu, u16 iden)
371{
372 if (kvmhv_is_nestedv2())
373 return __kvmhv_nestedv2_mark_dirty(vcpu, iden);
374 return 0;
375}
376
377static inline int kvmhv_nestedv2_cached_reload(struct kvm_vcpu *vcpu, u16 iden)
378{
379 if (kvmhv_is_nestedv2())
380 return __kvmhv_nestedv2_cached_reload(vcpu, iden);
381 return 0;
382}
383
384extern int kvm_irq_bypass;
385
386static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
387{
388 return vcpu->arch.book3s;
389}
390
391/* Also add subarch specific defines */
392
393#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
394#include <asm/kvm_book3s_32.h>
395#endif
396#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
397#include <asm/kvm_book3s_64.h>
398#endif
399
400static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
401{
402 vcpu->arch.regs.gpr[num] = val;
403 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_GPR(num));
404}
405
406static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
407{
408 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_GPR(num)) < 0);
409 return vcpu->arch.regs.gpr[num];
410}
411
412static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
413{
414 vcpu->arch.regs.ccr = val;
415 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_CR);
416}
417
418static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
419{
420 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_CR) < 0);
421 return vcpu->arch.regs.ccr;
422}
423
424static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val)
425{
426 vcpu->arch.regs.xer = val;
427 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_XER);
428}
429
430static inline ulong kvmppc_get_xer(struct kvm_vcpu *vcpu)
431{
432 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_XER) < 0);
433 return vcpu->arch.regs.xer;
434}
435
436static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
437{
438 vcpu->arch.regs.ctr = val;
439 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_CTR);
440}
441
442static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
443{
444 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_CTR) < 0);
445 return vcpu->arch.regs.ctr;
446}
447
448static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
449{
450 vcpu->arch.regs.link = val;
451 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_LR);
452}
453
454static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
455{
456 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_LR) < 0);
457 return vcpu->arch.regs.link;
458}
459
460static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
461{
462 vcpu->arch.regs.nip = val;
463 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_NIA);
464}
465
466static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
467{
468 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_NIA) < 0);
469 return vcpu->arch.regs.nip;
470}
471
472static inline u64 kvmppc_get_msr(struct kvm_vcpu *vcpu);
473static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu)
474{
475 return (kvmppc_get_msr(vcpu) & MSR_LE) != (MSR_KERNEL & MSR_LE);
476}
477
478static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
479{
480 return vcpu->arch.fault_dar;
481}
482
483static inline u64 kvmppc_get_fpr(struct kvm_vcpu *vcpu, int i)
484{
485 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSRS(i)) < 0);
486 return vcpu->arch.fp.fpr[i][TS_FPROFFSET];
487}
488
489static inline void kvmppc_set_fpr(struct kvm_vcpu *vcpu, int i, u64 val)
490{
491 vcpu->arch.fp.fpr[i][TS_FPROFFSET] = val;
492 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSRS(i));
493}
494
495static inline u64 kvmppc_get_fpscr(struct kvm_vcpu *vcpu)
496{
497 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_FPSCR) < 0);
498 return vcpu->arch.fp.fpscr;
499}
500
501static inline void kvmppc_set_fpscr(struct kvm_vcpu *vcpu, u64 val)
502{
503 vcpu->arch.fp.fpscr = val;
504 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_FPSCR);
505}
506
507
508static inline u64 kvmppc_get_vsx_fpr(struct kvm_vcpu *vcpu, int i, int j)
509{
510 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSRS(i)) < 0);
511 return vcpu->arch.fp.fpr[i][j];
512}
513
514static inline void kvmppc_set_vsx_fpr(struct kvm_vcpu *vcpu, int i, int j,
515 u64 val)
516{
517 vcpu->arch.fp.fpr[i][j] = val;
518 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSRS(i));
519}
520
521#ifdef CONFIG_ALTIVEC
522static inline void kvmppc_get_vsx_vr(struct kvm_vcpu *vcpu, int i, vector128 *v)
523{
524 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSRS(32 + i)) < 0);
525 *v = vcpu->arch.vr.vr[i];
526}
527
528static inline void kvmppc_set_vsx_vr(struct kvm_vcpu *vcpu, int i,
529 vector128 *val)
530{
531 vcpu->arch.vr.vr[i] = *val;
532 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSRS(32 + i));
533}
534
535static inline u32 kvmppc_get_vscr(struct kvm_vcpu *vcpu)
536{
537 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSCR) < 0);
538 return vcpu->arch.vr.vscr.u[3];
539}
540
541static inline void kvmppc_set_vscr(struct kvm_vcpu *vcpu, u32 val)
542{
543 vcpu->arch.vr.vscr.u[3] = val;
544 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSCR);
545}
546#endif
547
548#define KVMPPC_BOOK3S_VCPU_ACCESSOR_SET(reg, size, iden) \
549static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
550{ \
551 \
552 vcpu->arch.reg = val; \
553 kvmhv_nestedv2_mark_dirty(vcpu, iden); \
554}
555
556#define KVMPPC_BOOK3S_VCPU_ACCESSOR_GET(reg, size, iden) \
557static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
558{ \
559 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, iden) < 0); \
560 return vcpu->arch.reg; \
561}
562
563#define KVMPPC_BOOK3S_VCPU_ACCESSOR(reg, size, iden) \
564 KVMPPC_BOOK3S_VCPU_ACCESSOR_SET(reg, size, iden) \
565 KVMPPC_BOOK3S_VCPU_ACCESSOR_GET(reg, size, iden) \
566
567KVMPPC_BOOK3S_VCPU_ACCESSOR(pid, 32, KVMPPC_GSID_PIDR)
568KVMPPC_BOOK3S_VCPU_ACCESSOR(tar, 64, KVMPPC_GSID_TAR)
569KVMPPC_BOOK3S_VCPU_ACCESSOR(ebbhr, 64, KVMPPC_GSID_EBBHR)
570KVMPPC_BOOK3S_VCPU_ACCESSOR(ebbrr, 64, KVMPPC_GSID_EBBRR)
571KVMPPC_BOOK3S_VCPU_ACCESSOR(bescr, 64, KVMPPC_GSID_BESCR)
572KVMPPC_BOOK3S_VCPU_ACCESSOR(ic, 64, KVMPPC_GSID_IC)
573KVMPPC_BOOK3S_VCPU_ACCESSOR(vrsave, 64, KVMPPC_GSID_VRSAVE)
574
575
576#define KVMPPC_BOOK3S_VCORE_ACCESSOR_SET(reg, size, iden) \
577static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
578{ \
579 vcpu->arch.vcore->reg = val; \
580 kvmhv_nestedv2_mark_dirty(vcpu, iden); \
581}
582
583#define KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(reg, size, iden) \
584static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
585{ \
586 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, iden) < 0); \
587 return vcpu->arch.vcore->reg; \
588}
589
590#define KVMPPC_BOOK3S_VCORE_ACCESSOR(reg, size, iden) \
591 KVMPPC_BOOK3S_VCORE_ACCESSOR_SET(reg, size, iden) \
592 KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(reg, size, iden) \
593
594
595KVMPPC_BOOK3S_VCORE_ACCESSOR(vtb, 64, KVMPPC_GSID_VTB)
596KVMPPC_BOOK3S_VCORE_ACCESSOR(tb_offset, 64, KVMPPC_GSID_TB_OFFSET)
597KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(arch_compat, 32, KVMPPC_GSID_LOGICAL_PVR)
598KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(lpcr, 64, KVMPPC_GSID_LPCR)
599
600static inline u64 kvmppc_get_dec_expires(struct kvm_vcpu *vcpu)
601{
602 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_TB_OFFSET) < 0);
603 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_DEC_EXPIRY_TB) < 0);
604 return vcpu->arch.dec_expires;
605}
606
607static inline void kvmppc_set_dec_expires(struct kvm_vcpu *vcpu, u64 val)
608{
609 vcpu->arch.dec_expires = val;
610 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_TB_OFFSET) < 0);
611 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_DEC_EXPIRY_TB);
612}
613
614/* Expiry time of vcpu DEC relative to host TB */
615static inline u64 kvmppc_dec_expires_host_tb(struct kvm_vcpu *vcpu)
616{
617 return kvmppc_get_dec_expires(vcpu) - kvmppc_get_tb_offset(vcpu);
618}
619
620static inline bool is_kvmppc_resume_guest(int r)
621{
622 return (r == RESUME_GUEST || r == RESUME_GUEST_NV);
623}
624
625static inline bool is_kvmppc_hv_enabled(struct kvm *kvm);
626static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu)
627{
628 /* Only PR KVM supports the magic page */
629 return !is_kvmppc_hv_enabled(vcpu->kvm);
630}
631
632extern int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu);
633extern int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu);
634
635/* Magic register values loaded into r3 and r4 before the 'sc' assembly
636 * instruction for the OSI hypercalls */
637#define OSI_SC_MAGIC_R3 0x113724FA
638#define OSI_SC_MAGIC_R4 0x77810F9B
639
640#define INS_DCBZ 0x7c0007ec
641/* TO = 31 for unconditional trap */
642#define INS_TW 0x7fe00008
643
644#define SPLIT_HACK_MASK 0xff000000
645#define SPLIT_HACK_OFFS 0xfb000000
646
647/*
648 * This packs a VCPU ID from the [0..KVM_MAX_VCPU_IDS) space down to the
649 * [0..KVM_MAX_VCPUS) space, using knowledge of the guest's core stride
650 * (but not its actual threading mode, which is not available) to avoid
651 * collisions.
652 *
653 * The implementation leaves VCPU IDs from the range [0..KVM_MAX_VCPUS) (block
654 * 0) unchanged: if the guest is filling each VCORE completely then it will be
655 * using consecutive IDs and it will fill the space without any packing.
656 *
657 * For higher VCPU IDs, the packed ID is based on the VCPU ID modulo
658 * KVM_MAX_VCPUS (effectively masking off the top bits) and then an offset is
659 * added to avoid collisions.
660 *
661 * VCPU IDs in the range [KVM_MAX_VCPUS..(KVM_MAX_VCPUS*2)) (block 1) are only
662 * possible if the guest is leaving at least 1/2 of each VCORE empty, so IDs
663 * can be safely packed into the second half of each VCORE by adding an offset
664 * of (stride / 2).
665 *
666 * Similarly, if VCPU IDs in the range [(KVM_MAX_VCPUS*2)..(KVM_MAX_VCPUS*4))
667 * (blocks 2 and 3) are seen, the guest must be leaving at least 3/4 of each
668 * VCORE empty so packed IDs can be offset by (stride / 4) and (stride * 3 / 4).
669 *
670 * Finally, VCPU IDs from blocks 5..7 will only be seen if the guest is using a
671 * stride of 8 and 1 thread per core so the remaining offsets of 1, 5, 3 and 7
672 * must be free to use.
673 *
674 * (The offsets for each block are stored in block_offsets[], indexed by the
675 * block number if the stride is 8. For cases where the guest's stride is less
676 * than 8, we can re-use the block_offsets array by multiplying the block
677 * number by (MAX_SMT_THREADS / stride) to reach the correct entry.)
678 */
679static inline u32 kvmppc_pack_vcpu_id(struct kvm *kvm, u32 id)
680{
681 const int block_offsets[MAX_SMT_THREADS] = {0, 4, 2, 6, 1, 5, 3, 7};
682 int stride = kvm->arch.emul_smt_mode;
683 int block = (id / KVM_MAX_VCPUS) * (MAX_SMT_THREADS / stride);
684 u32 packed_id;
685
686 if (WARN_ONCE(block >= MAX_SMT_THREADS, "VCPU ID too large to pack"))
687 return 0;
688 packed_id = (id % KVM_MAX_VCPUS) + block_offsets[block];
689 if (WARN_ONCE(packed_id >= KVM_MAX_VCPUS, "VCPU ID packing failed"))
690 return 0;
691 return packed_id;
692}
693
694#endif /* __ASM_KVM_BOOK3S_H__ */