projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge tag 'probes-fixes-v6.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6-block.git] / arch / powerpc / include / asm / kvm_book3s.h
CommitLineData
d94d71cb 1/* SPDX-License-Identifier: GPL-2.0-only */
4e342025 2/*
4e342025
AG		 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>
2191d657 14#include <asm/kvm_book3s_asm.h>
19d31c5f 15#include <asm/guest-state-buffer.h>
4e342025 16
4e342025 17struct kvmppc_bat {
e15a1137 18 u64 raw;
4e342025
AG		 19 u32 bepi;
20 u32 bepi_mask;
4e342025
AG		 21 u32 brpn;
22 u8 wimg;
23 u8 pp;
3ed9c6d2
AG		 24 bool vs : 1;
25 bool vp : 1;
4e342025
AG		 26};
27
28struct kvmppc_sid_map {
29 u64 guest_vsid;
30 u64 guest_esid;
31 u64 host_vsid;
3ed9c6d2 32 bool valid : 1;
4e342025
AG		 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
8b6db3bc
AG		 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
c4befc58
PM		 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;
a4a0f252
PM		 51#ifdef CONFIG_PPC_BOOK3S_64
52 struct hlist_node list_vpte_64k;
53#endif
c4befc58 54 struct rcu_head rcu_head;
5524a27d 55 u64 host_vpn;
c4befc58
PM		 56 u64 pfn;
57 ulong slot;
58 struct kvmppc_pte pte;
c9029c34 59 int pagesize;
c4befc58
PM		 60};
61
e64fb7e2
SJS		 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;
7b5f8272 79 struct kvm_vcpu *runnable_threads[MAX_SMT_THREADS];
e64fb7e2
SJS		 80 struct list_head preempt_list;
81 spinlock_t lock;
da4ad88c 82 struct rcuwait wait;
e64fb7e2
SJS		 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 */
57b8daa7 89 u64 tb_offset_applied; /* timebase offset currently in force */
e64fb7e2
SJS		 90 ulong lpcr;
91 u32 arch_compat;
92 ulong pcr;
93 ulong dpdes; /* doorbell state (POWER8) */
88b02cf9 94 ulong vtb; /* virtual timebase */
e64fb7e2 95 ulong conferring_threads;
0cda69dd 96 unsigned int halt_poll_ns;
7aa15842 97 atomic_t online_count;
e64fb7e2
SJS		 98};
99
4e342025 100struct kvmppc_vcpu_book3s {
4e342025 101 struct kvmppc_sid_map sid_map[SID_MAP_NUM];
4e342025
AG		 102 struct {
103 u64 esid;
104 u64 vsid;
105 } slb_shadow[64];
106 u8 slb_shadow_max;
4e342025
AG		 107 struct kvmppc_bat ibat[8];
108 struct kvmppc_bat dbat[8];
109 u64 hid[6];
d6d549b2 110 u64 gqr[8];
4e342025 111 u64 sdr1;
4e342025
AG		 112 u64 hior;
113 u64 msr_mask;
88b02cf9 114 u64 vtb;
8b6db3bc
AG		 115#ifdef CONFIG_PPC_BOOK3S_32
116 u32 vsid_pool[VSID_POOL_SIZE];
ffe36492 117 u32 vsid_next;
8b6db3bc 118#else
ffe36492
BH		 119 u64 proto_vsid_first;
120 u64 proto_vsid_max;
121 u64 proto_vsid_next;
8b6db3bc
AG		 122#endif
123 int context_id[SID_CONTEXTS];
c4befc58 124
1022fc3d
AG		 125 bool hior_explicit; /* HIOR is set by ioctl, not PVR */
126
c4befc58
PM		 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];
a4a0f252
PM		 131#ifdef CONFIG_PPC_BOOK3S_64
132 struct hlist_head hpte_hash_vpte_64k[HPTEG_HASH_NUM_VPTE_64K];
133#endif
c4befc58
PM		 134 int hpte_cache_count;
135 spinlock_t mmu_lock;
4e342025
AG		 136};
137
c9029c34
PM		 138#define VSID_REAL 0x07ffffffffc00000ULL
139#define VSID_BAT 0x07ffffffffb00000ULL
140#define VSID_64K 0x0800000000000000ULL
0f296829 141#define VSID_1T 0x1000000000000000ULL
f7bc74e1
AG		 142#define VSID_REAL_DR 0x2000000000000000ULL
143#define VSID_REAL_IR 0x4000000000000000ULL
5a1b419f 144#define VSID_PR 0x8000000000000000ULL
4e342025 145
af7b4d10 146extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
4e342025 147extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
af7b4d10 148extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
4e342025
AG		 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);
de56a948 152extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu);
93b159b4
PM		 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);
4e342025 156extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
0f296829 157extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size);
4e342025 158extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
8c99d345
TZ		 159extern int kvmppc_book3s_hv_page_fault(struct kvm_vcpu *vcpu,
160 unsigned long addr, unsigned long status);
697d3899
PM		 161extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr,
162 unsigned long slb_v, unsigned long valid);
8c99d345 163extern int kvmppc_hv_emulate_mmio(struct kvm_vcpu *vcpu,
5a319350 164 unsigned long gpa, gva_t ea, int is_store);
fef093be
AG		 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);
d78bca72 168extern void kvmppc_mmu_hpte_cache_free(struct hpte_cache *pte);
fef093be
AG		 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);
de56a948 174extern int kvmppc_mmu_hv_init(void);
ae2113a4 175extern int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hc);
fef093be 176
8c99d345 177extern int kvmppc_book3s_radix_page_fault(struct kvm_vcpu *vcpu,
5a319350 178 unsigned long ea, unsigned long dsisr);
6ff887b8
SJS		 179extern unsigned long __kvmhv_copy_tofrom_guest_radix(int lpid, int pid,
180 gva_t eaddr, void *to, void *from,
181 unsigned long n);
d7b45615
SJS		 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);
fd10be25
SJS		 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);
9811c78e
SJS		 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);
9e04ba69
PM		 192extern int kvmppc_mmu_radix_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
193 struct kvmppc_pte *gpte, bool data, bool iswrite);
90165d3d 194extern void kvmppc_radix_tlbie_page(struct kvm *kvm, unsigned long addr,
dfcaacc8 195 unsigned int pshift, u64 lpid);
8cf531ed 196extern void kvmppc_unmap_pte(struct kvm *kvm, pte_t *pte, unsigned long gpa,
c43c3a86
PM		 197 unsigned int shift,
198 const struct kvm_memory_slot *memslot,
dfcaacc8 199 u64 lpid);
6cdf3037 200extern bool kvmppc_hv_handle_set_rc(struct kvm *kvm, bool nested,
fd10be25 201 bool writing, unsigned long gpa,
dfcaacc8 202 u64 lpid);
fd10be25
SJS		 203extern int kvmppc_book3s_instantiate_page(struct kvm_vcpu *vcpu,
204 unsigned long gpa,
205 struct kvm_memory_slot *memslot,
dac09f61 206 bool writing,
fd10be25 207 pte_t *inserted_pte, unsigned int *levelp);
8cf4ecc0 208extern int kvmppc_init_vm_radix(struct kvm *kvm);
5a319350 209extern void kvmppc_free_radix(struct kvm *kvm);
fd10be25 210extern void kvmppc_free_pgtable_radix(struct kvm *kvm, pgd_t *pgd,
dfcaacc8 211 u64 lpid);
5a319350
PM		 212extern int kvmppc_radix_init(void);
213extern void kvmppc_radix_exit(void);
32b48bf8 214extern void kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
b1c5356e
SC		 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);
8f7b79b8
PM		 220extern long kvmppc_hv_get_dirty_log_radix(struct kvm *kvm,
221 struct kvm_memory_slot *memslot, unsigned long *map);
5af3e9d0
PM		 222extern void kvmppc_radix_flush_memslot(struct kvm *kvm,
223 const struct kvm_memory_slot *memslot);
8cf4ecc0 224extern int kvmhv_get_rmmu_info(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
9e04ba69 225
35c4a733 226/* XXX remove this export when load_last_inst() is generic */
5467a97d 227extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
4e342025 228extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
bc5ad3f3
BH		 229extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
230 unsigned int vec);
de56a948 231extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags);
533082ae 232extern void kvmppc_trigger_fac_interrupt(struct kvm_vcpu *vcpu, ulong fac);
e15a1137
AG		 233extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
234 bool upper, u32 val);
aba3bd7f 235extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
8c99d345 236extern int kvmppc_emulate_paired_single(struct kvm_vcpu *vcpu);
ba049e93 237extern kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa,
8b135c77 238 bool writing, bool *writable, struct page **page);
342d3db7
PM		 239extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev,
240 unsigned long *rmap, long pte_index, int realmode);
c43c3a86 241extern void kvmppc_update_dirty_map(const struct kvm_memory_slot *memslot,
e641a317 242 unsigned long gfn, unsigned long psize);
6f22bd32 243extern void kvmppc_invalidate_hpte(struct kvm *kvm, __be64 *hptep,
342d3db7 244 unsigned long pte_index);
6f22bd32 245void kvmppc_clear_ref_hpte(struct kvm *kvm, __be64 *hptep,
55514893 246 unsigned long pte_index);
93e60249
PM		 247extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
248 unsigned long *nb_ret);
c35635ef
PM		 249extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr,
250 unsigned long gpa, bool dirty);
7ed661bf
PM		 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);
6b445ad4
PM		 254extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
255 unsigned long pte_index, unsigned long avpn,
256 unsigned long *hpret);
8f7b79b8 257extern long kvmppc_hv_get_dirty_log_hpt(struct kvm *kvm,
dfe49dbd 258 struct kvm_memory_slot *memslot, unsigned long *map);
8f7b79b8
PM		 259extern void kvmppc_harvest_vpa_dirty(struct kvmppc_vpa *vpa,
260 struct kvm_memory_slot *memslot,
261 unsigned long *map);
67145ef4
NP		 262extern unsigned long kvmppc_filter_lpcr_hv(struct kvm *kvm,
263 unsigned long lpcr);
a0144e2a
PM		 264extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr,
265 unsigned long mask);
8e6afa36 266extern void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr);
4e342025 267
4bb3c7a0
PM		 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
02143947 272extern void kvmppc_entry_trampoline(void);
de56a948 273extern void kvmppc_hv_entry_trampoline(void);
ca7f4203
AG		 274extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
275extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
0254f074 276extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
699a0ea0 277extern void kvmppc_pr_init_default_hcalls(struct kvm *kvm);
ae2113a4
PM		 278extern int kvmppc_hcall_impl_pr(unsigned long cmd);
279extern int kvmppc_hcall_impl_hv_realmode(unsigned long cmd);
07ae5389
AG		 280extern void kvmppc_copy_to_svcpu(struct kvm_vcpu *vcpu);
281extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu);
8d2e2fc5 282
ce275179 283long kvmppc_read_intr(void);
ce275179
CLG		 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
8d2e2fc5
SG		 287#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
288void kvmppc_save_tm_pr(struct kvm_vcpu *vcpu);
289void kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu);
e32c53d1 290void kvmppc_save_tm_sprs(struct kvm_vcpu *vcpu);
5706340a 291void kvmppc_restore_tm_sprs(struct kvm_vcpu *vcpu);
8d2e2fc5
SG		 292#else
293static inline void kvmppc_save_tm_pr(struct kvm_vcpu *vcpu) {}
294static inline void kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu) {}
e32c53d1 295static inline void kvmppc_save_tm_sprs(struct kvm_vcpu *vcpu) {}
5706340a 296static inline void kvmppc_restore_tm_sprs(struct kvm_vcpu *vcpu) {}
8d2e2fc5
SG		 297#endif
298
19d31c5f 299extern unsigned long nested_capabilities;
8e3f5fc1
PM		 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);
6ff887b8 304long kvmhv_copy_tofrom_guest_nested(struct kvm_vcpu *vcpu);
7d370e18 305void kvmhv_flush_lpid(u64 lpid);
dfcaacc8 306void kvmhv_set_ptbl_entry(u64 lpid, u64 dw0, u64 dw1);
8e3f5fc1 307void kvmhv_release_all_nested(struct kvm *kvm);
360cae31 308long kvmhv_enter_nested_guest(struct kvm_vcpu *vcpu);
e3b6b466 309long kvmhv_do_nested_tlbie(struct kvm_vcpu *vcpu);
53324b51
BR		 310long do_h_rpt_invalidate_pat(struct kvm_vcpu *vcpu, unsigned long lpid,
311 unsigned long type, unsigned long pg_sizes,
312 unsigned long start, unsigned long end);
8c99d345 313int kvmhv_run_single_vcpu(struct kvm_vcpu *vcpu,
360cae31
PM		 314 u64 time_limit, unsigned long lpcr);
315void kvmhv_save_hv_regs(struct kvm_vcpu *vcpu, struct hv_guest_state *hr);
316void kvmhv_restore_hv_return_state(struct kvm_vcpu *vcpu,
317 struct hv_guest_state *hr);
8c99d345 318long int kvmhv_nested_page_fault(struct kvm_vcpu *vcpu);
8e3f5fc1 319
7284ca8a
SG		 320void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac);
321
19d31c5f
JN		 322
323#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
324
325extern struct static_key_false __kvmhv_is_nestedv2;
326
327static inline bool kvmhv_is_nestedv2(void)
328{
329 return static_branch_unlikely(&__kvmhv_is_nestedv2);
330}
331
332static inline bool kvmhv_is_nestedv1(void)
333{
334 return !static_branch_likely(&__kvmhv_is_nestedv2);
335}
336
337#else
338
339static inline bool kvmhv_is_nestedv2(void)
340{
341 return false;
342}
343
344static inline bool kvmhv_is_nestedv1(void)
345{
346 return false;
347}
348
349#endif
350
351int __kvmhv_nestedv2_reload_ptregs(struct kvm_vcpu *vcpu, struct pt_regs *regs);
352int __kvmhv_nestedv2_mark_dirty_ptregs(struct kvm_vcpu *vcpu, struct pt_regs *regs);
353int __kvmhv_nestedv2_mark_dirty(struct kvm_vcpu *vcpu, u16 iden);
354int __kvmhv_nestedv2_cached_reload(struct kvm_vcpu *vcpu, u16 iden);
355
356static inline int kvmhv_nestedv2_reload_ptregs(struct kvm_vcpu *vcpu,
357 struct pt_regs *regs)
358{
359 if (kvmhv_is_nestedv2())
360 return __kvmhv_nestedv2_reload_ptregs(vcpu, regs);
361 return 0;
362}
363static inline int kvmhv_nestedv2_mark_dirty_ptregs(struct kvm_vcpu *vcpu,
364 struct pt_regs *regs)
365{
366 if (kvmhv_is_nestedv2())
367 return __kvmhv_nestedv2_mark_dirty_ptregs(vcpu, regs);
368 return 0;
369}
370
371static inline int kvmhv_nestedv2_mark_dirty(struct kvm_vcpu *vcpu, u16 iden)
372{
373 if (kvmhv_is_nestedv2())
374 return __kvmhv_nestedv2_mark_dirty(vcpu, iden);
375 return 0;
376}
377
378static inline int kvmhv_nestedv2_cached_reload(struct kvm_vcpu *vcpu, u16 iden)
379{
380 if (kvmhv_is_nestedv2())
381 return __kvmhv_nestedv2_cached_reload(vcpu, iden);
382 return 0;
383}
384
644abbb2 385extern int kvm_irq_bypass;
4e342025
AG		 386
387static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
388{
3ff95502 389 return vcpu->arch.book3s;
4e342025
AG		 390}
391
de56a948
PM		 392/* Also add subarch specific defines */
393
394#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
395#include <asm/kvm_book3s_32.h>
396#endif
397#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
398#include <asm/kvm_book3s_64.h>
399#endif
400
c7f38f46
AG		 401static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
402{
1143a706 403 vcpu->arch.regs.gpr[num] = val;
19d31c5f 404 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_GPR(num));
c7f38f46
AG		 405}
406
407static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
408{
19d31c5f 409 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_GPR(num)) < 0);
1143a706 410 return vcpu->arch.regs.gpr[num];
c7f38f46
AG		 411}
412
413static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
414{
fd0944ba 415 vcpu->arch.regs.ccr = val;
19d31c5f 416 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_CR);
c7f38f46
AG		 417}
418
419static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
420{
19d31c5f 421 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_CR) < 0);
fd0944ba 422 return vcpu->arch.regs.ccr;
c7f38f46
AG		 423}
424
c63517c2 425static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val)
c7f38f46 426{
173c520a 427 vcpu->arch.regs.xer = val;
19d31c5f 428 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_XER);
c7f38f46
AG		 429}
430
c63517c2 431static inline ulong kvmppc_get_xer(struct kvm_vcpu *vcpu)
c7f38f46 432{
19d31c5f 433 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_XER) < 0);
173c520a 434 return vcpu->arch.regs.xer;
c7f38f46
AG		 435}
436
437static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
438{
173c520a 439 vcpu->arch.regs.ctr = val;
19d31c5f 440 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_CTR);
c7f38f46
AG		 441}
442
443static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
444{
19d31c5f 445 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_CTR) < 0);
173c520a 446 return vcpu->arch.regs.ctr;
c7f38f46
AG		 447}
448
449static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
450{
173c520a 451 vcpu->arch.regs.link = val;
19d31c5f 452 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_LR);
c7f38f46
AG		 453}
454
455static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
456{
19d31c5f 457 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_LR) < 0);
173c520a 458 return vcpu->arch.regs.link;
c7f38f46
AG		 459}
460
461static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
462{
173c520a 463 vcpu->arch.regs.nip = val;
19d31c5f 464 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_NIA);
c7f38f46
AG		 465}
466
467static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
468{
19d31c5f 469 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_NIA) < 0);
173c520a 470 return vcpu->arch.regs.nip;
c7f38f46
AG		 471}
472
5deb8e7a 473static inline u64 kvmppc_get_msr(struct kvm_vcpu *vcpu);
73601775 474static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu)
c7f38f46 475{
5deb8e7a 476 return (kvmppc_get_msr(vcpu) & MSR_LE) != (MSR_KERNEL & MSR_LE);
73601775 477}
c7f38f46 478
c7f38f46
AG		 479static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
480{
a2d56020
PM		 481 return vcpu->arch.fault_dar;
482}
483
52425a3b
JN		 484static inline u64 kvmppc_get_fpr(struct kvm_vcpu *vcpu, int i)
485{
19d31c5f 486 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSRS(i)) < 0);
52425a3b
JN		 487 return vcpu->arch.fp.fpr[i][TS_FPROFFSET];
488}
489
490static inline void kvmppc_set_fpr(struct kvm_vcpu *vcpu, int i, u64 val)
491{
492 vcpu->arch.fp.fpr[i][TS_FPROFFSET] = val;
19d31c5f 493 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSRS(i));
52425a3b
JN		 494}
495
496static inline u64 kvmppc_get_fpscr(struct kvm_vcpu *vcpu)
497{
19d31c5f 498 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_FPSCR) < 0);
52425a3b
JN		 499 return vcpu->arch.fp.fpscr;
500}
501
502static inline void kvmppc_set_fpscr(struct kvm_vcpu *vcpu, u64 val)
503{
504 vcpu->arch.fp.fpscr = val;
19d31c5f 505 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_FPSCR);
52425a3b
JN		 506}
507
508
509static inline u64 kvmppc_get_vsx_fpr(struct kvm_vcpu *vcpu, int i, int j)
510{
19d31c5f 511 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSRS(i)) < 0);
52425a3b
JN		 512 return vcpu->arch.fp.fpr[i][j];
513}
514
515static inline void kvmppc_set_vsx_fpr(struct kvm_vcpu *vcpu, int i, int j,
516 u64 val)
517{
518 vcpu->arch.fp.fpr[i][j] = val;
19d31c5f 519 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSRS(i));
52425a3b
JN		 520}
521
522#ifdef CONFIG_ALTIVEC
523static inline void kvmppc_get_vsx_vr(struct kvm_vcpu *vcpu, int i, vector128 *v)
524{
19d31c5f 525 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSRS(32 + i)) < 0);
52425a3b
JN		 526 *v = vcpu->arch.vr.vr[i];
527}
528
529static inline void kvmppc_set_vsx_vr(struct kvm_vcpu *vcpu, int i,
530 vector128 *val)
531{
532 vcpu->arch.vr.vr[i] = *val;
19d31c5f 533 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSRS(32 + i));
52425a3b
JN		 534}
535
536static inline u32 kvmppc_get_vscr(struct kvm_vcpu *vcpu)
537{
19d31c5f 538 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSCR) < 0);
52425a3b
JN		 539 return vcpu->arch.vr.vscr.u[3];
540}
541
542static inline void kvmppc_set_vscr(struct kvm_vcpu *vcpu, u32 val)
543{
544 vcpu->arch.vr.vscr.u[3] = val;
19d31c5f 545 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSCR);
52425a3b
JN		 546}
547#endif
548
19d31c5f 549#define KVMPPC_BOOK3S_VCPU_ACCESSOR_SET(reg, size, iden) \
7028ac8d
JN		 550static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
551{ \
552 \
553 vcpu->arch.reg = val; \
19d31c5f 554 kvmhv_nestedv2_mark_dirty(vcpu, iden); \
7028ac8d
JN		 555}
556
19d31c5f 557#define KVMPPC_BOOK3S_VCPU_ACCESSOR_GET(reg, size, iden) \
7028ac8d
JN		 558static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
559{ \
19d31c5f 560 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, iden) < 0); \
7028ac8d
JN		 561 return vcpu->arch.reg; \
562}
563
19d31c5f
JN		 564#define KVMPPC_BOOK3S_VCPU_ACCESSOR(reg, size, iden) \
565 KVMPPC_BOOK3S_VCPU_ACCESSOR_SET(reg, size, iden) \
566 KVMPPC_BOOK3S_VCPU_ACCESSOR_GET(reg, size, iden) \
7028ac8d 567
19d31c5f
JN		 568KVMPPC_BOOK3S_VCPU_ACCESSOR(pid, 32, KVMPPC_GSID_PIDR)
569KVMPPC_BOOK3S_VCPU_ACCESSOR(tar, 64, KVMPPC_GSID_TAR)
570KVMPPC_BOOK3S_VCPU_ACCESSOR(ebbhr, 64, KVMPPC_GSID_EBBHR)
571KVMPPC_BOOK3S_VCPU_ACCESSOR(ebbrr, 64, KVMPPC_GSID_EBBRR)
572KVMPPC_BOOK3S_VCPU_ACCESSOR(bescr, 64, KVMPPC_GSID_BESCR)
573KVMPPC_BOOK3S_VCPU_ACCESSOR(ic, 64, KVMPPC_GSID_IC)
574KVMPPC_BOOK3S_VCPU_ACCESSOR(vrsave, 64, KVMPPC_GSID_VRSAVE)
7028ac8d 575
c8ae9b3c 576
19d31c5f 577#define KVMPPC_BOOK3S_VCORE_ACCESSOR_SET(reg, size, iden) \
c8ae9b3c
JN		 578static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
579{ \
580 vcpu->arch.vcore->reg = val; \
19d31c5f 581 kvmhv_nestedv2_mark_dirty(vcpu, iden); \
c8ae9b3c
JN		 582}
583
19d31c5f 584#define KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(reg, size, iden) \
c8ae9b3c
JN		 585static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
586{ \
19d31c5f 587 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, iden) < 0); \
c8ae9b3c
JN		 588 return vcpu->arch.vcore->reg; \
589}
590
19d31c5f
JN		 591#define KVMPPC_BOOK3S_VCORE_ACCESSOR(reg, size, iden) \
592 KVMPPC_BOOK3S_VCORE_ACCESSOR_SET(reg, size, iden) \
593 KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(reg, size, iden) \
c8ae9b3c
JN		 594
595
19d31c5f 596KVMPPC_BOOK3S_VCORE_ACCESSOR(vtb, 64, KVMPPC_GSID_VTB)
55dfb8be 597KVMPPC_BOOK3S_VCORE_ACCESSOR(dpdes, 64, KVMPPC_GSID_DPDES)
19d31c5f
JN		 598KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(arch_compat, 32, KVMPPC_GSID_LOGICAL_PVR)
599KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(lpcr, 64, KVMPPC_GSID_LPCR)
e0d4acbc
JN		 600KVMPPC_BOOK3S_VCORE_ACCESSOR_SET(tb_offset, 64, KVMPPC_GSID_TB_OFFSET)
601
602static inline u64 kvmppc_get_tb_offset(struct kvm_vcpu *vcpu)
603{
604 return vcpu->arch.vcore->tb_offset;
605}
c8ae9b3c 606
7028ac8d
JN		 607static inline u64 kvmppc_get_dec_expires(struct kvm_vcpu *vcpu)
608{
19d31c5f 609 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_DEC_EXPIRY_TB) < 0);
7028ac8d
JN		 610 return vcpu->arch.dec_expires;
611}
612
613static inline void kvmppc_set_dec_expires(struct kvm_vcpu *vcpu, u64 val)
614{
615 vcpu->arch.dec_expires = val;
19d31c5f 616 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_DEC_EXPIRY_TB);
7028ac8d
JN		 617}
618
3c1a4322
NP		 619/* Expiry time of vcpu DEC relative to host TB */
620static inline u64 kvmppc_dec_expires_host_tb(struct kvm_vcpu *vcpu)
621{
c8ae9b3c 622 return kvmppc_get_dec_expires(vcpu) - kvmppc_get_tb_offset(vcpu);
3c1a4322
NP		 623}
624
e59d24e6
GK		 625static inline bool is_kvmppc_resume_guest(int r)
626{
627 return (r == RESUME_GUEST || r == RESUME_GUEST_NV);
628}
629
c12fb43c
AG		 630static inline bool is_kvmppc_hv_enabled(struct kvm *kvm);
631static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu)
632{
633 /* Only PR KVM supports the magic page */
634 return !is_kvmppc_hv_enabled(vcpu->kvm);
635}
636
99342cf8
DG		 637extern int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu);
638extern int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu);
639
ad0a048b
AG		 640/* Magic register values loaded into r3 and r4 before the 'sc' assembly
641 * instruction for the OSI hypercalls */
642#define OSI_SC_MAGIC_R3 0x113724FA
643#define OSI_SC_MAGIC_R4 0x77810F9B
644
4e342025 645#define INS_DCBZ 0x7c0007ec
8c32a2ea
BB		 646/* TO = 31 for unconditional trap */
647#define INS_TW 0x7fe00008
4e342025 648
c01e3f66
AG		 649#define SPLIT_HACK_MASK 0xff000000
650#define SPLIT_HACK_OFFS 0xfb000000
651
1e175d2e 652/*
a1c42dde 653 * This packs a VCPU ID from the [0..KVM_MAX_VCPU_IDS) space down to the
1e175d2e
SB		 654 * [0..KVM_MAX_VCPUS) space, using knowledge of the guest's core stride
655 * (but not its actual threading mode, which is not available) to avoid
656 * collisions.
657 *
658 * The implementation leaves VCPU IDs from the range [0..KVM_MAX_VCPUS) (block
659 * 0) unchanged: if the guest is filling each VCORE completely then it will be
660 * using consecutive IDs and it will fill the space without any packing.
661 *
662 * For higher VCPU IDs, the packed ID is based on the VCPU ID modulo
663 * KVM_MAX_VCPUS (effectively masking off the top bits) and then an offset is
664 * added to avoid collisions.
665 *
666 * VCPU IDs in the range [KVM_MAX_VCPUS..(KVM_MAX_VCPUS*2)) (block 1) are only
667 * possible if the guest is leaving at least 1/2 of each VCORE empty, so IDs
668 * can be safely packed into the second half of each VCORE by adding an offset
669 * of (stride / 2).
670 *
671 * Similarly, if VCPU IDs in the range [(KVM_MAX_VCPUS*2)..(KVM_MAX_VCPUS*4))
672 * (blocks 2 and 3) are seen, the guest must be leaving at least 3/4 of each
673 * VCORE empty so packed IDs can be offset by (stride / 4) and (stride * 3 / 4).
674 *
675 * Finally, VCPU IDs from blocks 5..7 will only be seen if the guest is using a
676 * stride of 8 and 1 thread per core so the remaining offsets of 1, 5, 3 and 7
677 * must be free to use.
678 *
679 * (The offsets for each block are stored in block_offsets[], indexed by the
680 * block number if the stride is 8. For cases where the guest's stride is less
681 * than 8, we can re-use the block_offsets array by multiplying the block
682 * number by (MAX_SMT_THREADS / stride) to reach the correct entry.)
683 */
684static inline u32 kvmppc_pack_vcpu_id(struct kvm *kvm, u32 id)
685{
686 const int block_offsets[MAX_SMT_THREADS] = {0, 4, 2, 6, 1, 5, 3, 7};
687 int stride = kvm->arch.emul_smt_mode;
688 int block = (id / KVM_MAX_VCPUS) * (MAX_SMT_THREADS / stride);
689 u32 packed_id;
690
691 if (WARN_ONCE(block >= MAX_SMT_THREADS, "VCPU ID too large to pack"))
692 return 0;
693 packed_id = (id % KVM_MAX_VCPUS) + block_offsets[block];
694 if (WARN_ONCE(packed_id >= KVM_MAX_VCPUS, "VCPU ID packing failed"))
695 return 0;
696 return packed_id;
697}
698
4e342025 699#endif /* __ASM_KVM_BOOK3S_H__ */
Linux 6.x block layer and io_uring tree(s)