1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * 4 * Copyright IBM Corp. 2008 5 * 6 * Authors: Hollis Blanchard <hollisb@us.ibm.com> 7 */ 8 9 #ifndef __POWERPC_KVM_PPC_H__ 10 #define __POWERPC_KVM_PPC_H__ 11 12 /* This file exists just so we can dereference kvm_vcpu, avoiding nested header 13 * dependencies. */ 14 15 #include <linux/mutex.h> 16 #include <linux/timer.h> 17 #include <linux/types.h> 18 #include <linux/kvm_types.h> 19 #include <linux/kvm_host.h> 20 #include <linux/bug.h> 21 #ifdef CONFIG_PPC_BOOK3S 22 #include <asm/kvm_book3s.h> 23 #else 24 #include <asm/kvm_booke.h> 25 #endif 26 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER 27 #include <asm/paca.h> 28 #include <asm/xive.h> 29 #include <asm/cpu_has_feature.h> 30 #endif 31 32 /* 33 * KVMPPC_INST_SW_BREAKPOINT is debug Instruction 34 * for supporting software breakpoint. 35 */ 36 #define KVMPPC_INST_SW_BREAKPOINT 0x00dddd00 37 38 enum emulation_result { 39 EMULATE_DONE, /* no further processing */ 40 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ 41 EMULATE_FAIL, /* can't emulate this instruction */ 42 EMULATE_AGAIN, /* something went wrong. go again */ 43 EMULATE_EXIT_USER, /* emulation requires exit to user-space */ 44 }; 45 46 enum instruction_fetch_type { 47 INST_GENERIC, 48 INST_SC, /* system call */ 49 }; 50 51 enum xlate_instdata { 52 XLATE_INST, /* translate instruction address */ 53 XLATE_DATA /* translate data address */ 54 }; 55 56 enum xlate_readwrite { 57 XLATE_READ, /* check for read permissions */ 58 XLATE_WRITE /* check for write permissions */ 59 }; 60 61 extern int kvmppc_vcpu_run(struct kvm_vcpu *vcpu); 62 extern int __kvmppc_vcpu_run(struct kvm_vcpu *vcpu); 63 extern void kvmppc_handler_highmem(void); 64 65 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); 66 extern int kvmppc_handle_load(struct kvm_vcpu *vcpu, 67 unsigned int rt, unsigned int bytes, 68 int is_default_endian); 69 extern int kvmppc_handle_loads(struct kvm_vcpu *vcpu, 70 unsigned int rt, unsigned int bytes, 71 int is_default_endian); 72 extern int kvmppc_handle_vsx_load(struct kvm_vcpu *vcpu, 73 unsigned int rt, unsigned int bytes, 74 int is_default_endian, int mmio_sign_extend); 75 extern int kvmppc_handle_vmx_load(struct kvm_vcpu *vcpu, 76 unsigned int rt, unsigned int bytes, int is_default_endian); 77 extern int kvmppc_handle_vmx_store(struct kvm_vcpu *vcpu, 78 unsigned int rs, unsigned int bytes, int is_default_endian); 79 extern int kvmppc_handle_store(struct kvm_vcpu *vcpu, 80 u64 val, unsigned int bytes, 81 int is_default_endian); 82 extern int kvmppc_handle_vsx_store(struct kvm_vcpu *vcpu, 83 int rs, unsigned int bytes, 84 int is_default_endian); 85 86 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, 87 enum instruction_fetch_type type, u32 *inst); 88 89 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 90 bool data); 91 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 92 bool data); 93 extern int kvmppc_emulate_instruction(struct kvm_vcpu *vcpu); 94 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu); 95 extern int kvmppc_emulate_mmio(struct kvm_vcpu *vcpu); 96 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu); 97 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb); 98 extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu); 99 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu); 100 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu); 101 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu); 102 103 /* Core-specific hooks */ 104 105 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr, 106 unsigned int gtlb_idx); 107 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid); 108 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 109 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 110 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index, 111 gva_t eaddr); 112 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu); 113 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu); 114 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, 115 enum xlate_instdata xlid, enum xlate_readwrite xlrw, 116 struct kvmppc_pte *pte); 117 118 extern int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu); 119 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu); 120 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu); 121 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, 122 struct kvm_translation *tr); 123 124 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 125 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu); 126 127 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu); 128 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); 129 extern void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu, ulong flags); 130 extern void kvmppc_core_queue_syscall(struct kvm_vcpu *vcpu); 131 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); 132 extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu); 133 extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu); 134 extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu); 135 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); 136 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); 137 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 138 struct kvm_interrupt *irq); 139 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu); 140 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags, 141 ulong esr_flags); 142 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, 143 ulong dear_flags, 144 ulong esr_flags); 145 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu); 146 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, 147 ulong esr_flags); 148 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); 149 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); 150 151 extern int kvmppc_booke_init(void); 152 extern void kvmppc_booke_exit(void); 153 154 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); 155 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); 156 157 extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order); 158 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info); 159 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order); 160 extern void kvmppc_free_hpt(struct kvm_hpt_info *info); 161 extern void kvmppc_rmap_reset(struct kvm *kvm); 162 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, 163 struct kvm_memory_slot *memslot, unsigned long porder); 164 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); 165 extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd, 166 struct iommu_group *grp); 167 extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm, 168 struct iommu_group *grp); 169 extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm); 170 extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm); 171 extern void kvmppc_setup_partition_table(struct kvm *kvm); 172 173 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, 174 struct kvm_create_spapr_tce_64 *args); 175 #define kvmppc_ioba_validate(stt, ioba, npages) \ 176 (iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \ 177 (stt)->size, (ioba), (npages)) ? \ 178 H_PARAMETER : H_SUCCESS) 179 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 180 unsigned long ioba, unsigned long tce); 181 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu, 182 unsigned long liobn, unsigned long ioba, 183 unsigned long tce_list, unsigned long npages); 184 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu, 185 unsigned long liobn, unsigned long ioba, 186 unsigned long tce_value, unsigned long npages); 187 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 188 unsigned long ioba); 189 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages); 190 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages); 191 extern int kvmppc_core_init_vm(struct kvm *kvm); 192 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 193 extern void kvmppc_core_free_memslot(struct kvm *kvm, 194 struct kvm_memory_slot *slot); 195 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 196 const struct kvm_memory_slot *old, 197 struct kvm_memory_slot *new, 198 enum kvm_mr_change change); 199 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 200 struct kvm_memory_slot *old, 201 const struct kvm_memory_slot *new, 202 enum kvm_mr_change change); 203 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 204 struct kvm_ppc_smmu_info *info); 205 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 206 struct kvm_memory_slot *memslot); 207 208 extern int kvmppc_bookehv_init(void); 209 extern void kvmppc_bookehv_exit(void); 210 211 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 212 213 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 214 extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm, 215 struct kvm_ppc_resize_hpt *rhpt); 216 extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm, 217 struct kvm_ppc_resize_hpt *rhpt); 218 219 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 220 221 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 222 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 223 extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 224 225 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 226 u32 priority); 227 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 228 u32 *priority); 229 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 230 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 231 232 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu); 233 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu); 234 235 union kvmppc_one_reg { 236 u32 wval; 237 u64 dval; 238 vector128 vval; 239 u64 vsxval[2]; 240 u32 vsx32val[4]; 241 u16 vsx16val[8]; 242 u8 vsx8val[16]; 243 struct { 244 u64 addr; 245 u64 length; 246 } vpaval; 247 u64 xive_timaval[2]; 248 }; 249 250 struct kvmppc_ops { 251 struct module *owner; 252 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 253 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 254 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, 255 union kvmppc_one_reg *val); 256 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, 257 union kvmppc_one_reg *val); 258 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 259 void (*vcpu_put)(struct kvm_vcpu *vcpu); 260 void (*inject_interrupt)(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags); 261 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); 262 int (*vcpu_run)(struct kvm_vcpu *vcpu); 263 int (*vcpu_create)(struct kvm_vcpu *vcpu); 264 void (*vcpu_free)(struct kvm_vcpu *vcpu); 265 int (*check_requests)(struct kvm_vcpu *vcpu); 266 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); 267 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); 268 int (*prepare_memory_region)(struct kvm *kvm, 269 const struct kvm_memory_slot *old, 270 struct kvm_memory_slot *new, 271 enum kvm_mr_change change); 272 void (*commit_memory_region)(struct kvm *kvm, 273 struct kvm_memory_slot *old, 274 const struct kvm_memory_slot *new, 275 enum kvm_mr_change change); 276 bool (*unmap_gfn_range)(struct kvm *kvm, struct kvm_gfn_range *range); 277 bool (*age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range); 278 bool (*test_age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range); 279 bool (*set_spte_gfn)(struct kvm *kvm, struct kvm_gfn_range *range); 280 void (*free_memslot)(struct kvm_memory_slot *slot); 281 int (*init_vm)(struct kvm *kvm); 282 void (*destroy_vm)(struct kvm *kvm); 283 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 284 int (*emulate_op)(struct kvm_vcpu *vcpu, 285 unsigned int inst, int *advance); 286 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 287 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 288 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 289 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 290 unsigned long arg); 291 int (*hcall_implemented)(unsigned long hcall); 292 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *, 293 struct irq_bypass_producer *); 294 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *, 295 struct irq_bypass_producer *); 296 int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg); 297 int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info); 298 int (*set_smt_mode)(struct kvm *kvm, unsigned long mode, 299 unsigned long flags); 300 void (*giveup_ext)(struct kvm_vcpu *vcpu, ulong msr); 301 int (*enable_nested)(struct kvm *kvm); 302 int (*load_from_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr, 303 int size); 304 int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr, 305 int size); 306 int (*enable_svm)(struct kvm *kvm); 307 int (*svm_off)(struct kvm *kvm); 308 int (*enable_dawr1)(struct kvm *kvm); 309 bool (*hash_v3_possible)(void); 310 int (*create_vm_debugfs)(struct kvm *kvm); 311 int (*create_vcpu_debugfs)(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry); 312 }; 313 314 extern struct kvmppc_ops *kvmppc_hv_ops; 315 extern struct kvmppc_ops *kvmppc_pr_ops; 316 317 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 318 enum instruction_fetch_type type, u32 *inst) 319 { 320 int ret = EMULATE_DONE; 321 u32 fetched_inst; 322 323 /* Load the instruction manually if it failed to do so in the 324 * exit path */ 325 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 326 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 327 328 /* Write fetch_failed unswapped if the fetch failed */ 329 if (ret == EMULATE_DONE) 330 fetched_inst = kvmppc_need_byteswap(vcpu) ? 331 swab32(vcpu->arch.last_inst) : 332 vcpu->arch.last_inst; 333 else 334 fetched_inst = vcpu->arch.last_inst; 335 336 *inst = fetched_inst; 337 return ret; 338 } 339 340 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 341 { 342 return kvm->arch.kvm_ops == kvmppc_hv_ops; 343 } 344 345 extern int kvmppc_hwrng_present(void); 346 347 /* 348 * Cuts out inst bits with ordering according to spec. 349 * That means the leftmost bit is zero. All given bits are included. 350 */ 351 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 352 { 353 u32 r; 354 u32 mask; 355 356 BUG_ON(msb > lsb); 357 358 mask = (1 << (lsb - msb + 1)) - 1; 359 r = (inst >> (63 - lsb)) & mask; 360 361 return r; 362 } 363 364 /* 365 * Replaces inst bits with ordering according to spec. 366 */ 367 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 368 { 369 u32 r; 370 u32 mask; 371 372 BUG_ON(msb > lsb); 373 374 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 375 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 376 377 return r; 378 } 379 380 #define one_reg_size(id) \ 381 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 382 383 #define get_reg_val(id, reg) ({ \ 384 union kvmppc_one_reg __u; \ 385 switch (one_reg_size(id)) { \ 386 case 4: __u.wval = (reg); break; \ 387 case 8: __u.dval = (reg); break; \ 388 default: BUG(); \ 389 } \ 390 __u; \ 391 }) 392 393 394 #define set_reg_val(id, val) ({ \ 395 u64 __v; \ 396 switch (one_reg_size(id)) { \ 397 case 4: __v = (val).wval; break; \ 398 case 8: __v = (val).dval; break; \ 399 default: BUG(); \ 400 } \ 401 __v; \ 402 }) 403 404 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 405 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 406 407 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 408 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 409 410 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 411 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 412 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 413 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 414 415 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 416 417 struct openpic; 418 419 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 420 extern void kvm_cma_reserve(void) __init; 421 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 422 { 423 paca_ptrs[cpu]->kvm_hstate.xics_phys = (void __iomem *)addr; 424 } 425 426 static inline void kvmppc_set_xive_tima(int cpu, 427 unsigned long phys_addr, 428 void __iomem *virt_addr) 429 { 430 paca_ptrs[cpu]->kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr; 431 paca_ptrs[cpu]->kvm_hstate.xive_tima_virt = virt_addr; 432 } 433 434 static inline u32 kvmppc_get_xics_latch(void) 435 { 436 u32 xirr; 437 438 xirr = get_paca()->kvm_hstate.saved_xirr; 439 get_paca()->kvm_hstate.saved_xirr = 0; 440 return xirr; 441 } 442 443 /* 444 * To avoid the need to unnecessarily exit fully to the host kernel, an IPI to 445 * a CPU thread that's running/napping inside of a guest is by default regarded 446 * as a request to wake the CPU (if needed) and continue execution within the 447 * guest, potentially to process new state like externally-generated 448 * interrupts or IPIs sent from within the guest itself (e.g. H_PROD/H_IPI). 449 * 450 * To force an exit to the host kernel, kvmppc_set_host_ipi() must be called 451 * prior to issuing the IPI to set the corresponding 'host_ipi' flag in the 452 * target CPU's PACA. To avoid unnecessary exits to the host, this flag should 453 * be immediately cleared via kvmppc_clear_host_ipi() by the IPI handler on 454 * the receiving side prior to processing the IPI work. 455 * 456 * NOTE: 457 * 458 * We currently issue an smp_mb() at the beginning of kvmppc_set_host_ipi(). 459 * This is to guard against sequences such as the following: 460 * 461 * CPU 462 * X: smp_muxed_ipi_set_message(): 463 * X: smp_mb() 464 * X: message[RESCHEDULE] = 1 465 * X: doorbell_global_ipi(42): 466 * X: kvmppc_set_host_ipi(42) 467 * X: ppc_msgsnd_sync()/smp_mb() 468 * X: ppc_msgsnd() -> 42 469 * 42: doorbell_exception(): // from CPU X 470 * 42: ppc_msgsync() 471 * 105: smp_muxed_ipi_set_message(): 472 * 105: smb_mb() 473 * // STORE DEFERRED DUE TO RE-ORDERING 474 * --105: message[CALL_FUNCTION] = 1 475 * | 105: doorbell_global_ipi(42): 476 * | 105: kvmppc_set_host_ipi(42) 477 * | 42: kvmppc_clear_host_ipi(42) 478 * | 42: smp_ipi_demux_relaxed() 479 * | 42: // returns to executing guest 480 * | // RE-ORDERED STORE COMPLETES 481 * ->105: message[CALL_FUNCTION] = 1 482 * 105: ppc_msgsnd_sync()/smp_mb() 483 * 105: ppc_msgsnd() -> 42 484 * 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored 485 * 105: // hangs waiting on 42 to process messages/call_single_queue 486 * 487 * We also issue an smp_mb() at the end of kvmppc_clear_host_ipi(). This is 488 * to guard against sequences such as the following (as well as to create 489 * a read-side pairing with the barrier in kvmppc_set_host_ipi()): 490 * 491 * CPU 492 * X: smp_muxed_ipi_set_message(): 493 * X: smp_mb() 494 * X: message[RESCHEDULE] = 1 495 * X: doorbell_global_ipi(42): 496 * X: kvmppc_set_host_ipi(42) 497 * X: ppc_msgsnd_sync()/smp_mb() 498 * X: ppc_msgsnd() -> 42 499 * 42: doorbell_exception(): // from CPU X 500 * 42: ppc_msgsync() 501 * // STORE DEFERRED DUE TO RE-ORDERING 502 * -- 42: kvmppc_clear_host_ipi(42) 503 * | 42: smp_ipi_demux_relaxed() 504 * | 105: smp_muxed_ipi_set_message(): 505 * | 105: smb_mb() 506 * | 105: message[CALL_FUNCTION] = 1 507 * | 105: doorbell_global_ipi(42): 508 * | 105: kvmppc_set_host_ipi(42) 509 * | // RE-ORDERED STORE COMPLETES 510 * -> 42: kvmppc_clear_host_ipi(42) 511 * 42: // returns to executing guest 512 * 105: ppc_msgsnd_sync()/smp_mb() 513 * 105: ppc_msgsnd() -> 42 514 * 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored 515 * 105: // hangs waiting on 42 to process messages/call_single_queue 516 */ 517 static inline void kvmppc_set_host_ipi(int cpu) 518 { 519 /* 520 * order stores of IPI messages vs. setting of host_ipi flag 521 * 522 * pairs with the barrier in kvmppc_clear_host_ipi() 523 */ 524 smp_mb(); 525 paca_ptrs[cpu]->kvm_hstate.host_ipi = 1; 526 } 527 528 static inline void kvmppc_clear_host_ipi(int cpu) 529 { 530 paca_ptrs[cpu]->kvm_hstate.host_ipi = 0; 531 /* 532 * order clearing of host_ipi flag vs. processing of IPI messages 533 * 534 * pairs with the barrier in kvmppc_set_host_ipi() 535 */ 536 smp_mb(); 537 } 538 539 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 540 { 541 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 542 } 543 544 extern void kvm_hv_vm_activated(void); 545 extern void kvm_hv_vm_deactivated(void); 546 extern bool kvm_hv_mode_active(void); 547 548 extern void kvmppc_check_need_tlb_flush(struct kvm *kvm, int pcpu); 549 550 #else 551 static inline void __init kvm_cma_reserve(void) 552 {} 553 554 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 555 {} 556 557 static inline void kvmppc_set_xive_tima(int cpu, 558 unsigned long phys_addr, 559 void __iomem *virt_addr) 560 {} 561 562 static inline u32 kvmppc_get_xics_latch(void) 563 { 564 return 0; 565 } 566 567 static inline void kvmppc_set_host_ipi(int cpu) 568 {} 569 570 static inline void kvmppc_clear_host_ipi(int cpu) 571 {} 572 573 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 574 { 575 kvm_vcpu_kick(vcpu); 576 } 577 578 static inline bool kvm_hv_mode_active(void) { return false; } 579 580 #endif 581 582 #ifdef CONFIG_PPC_PSERIES 583 static inline bool kvmhv_on_pseries(void) 584 { 585 return !cpu_has_feature(CPU_FTR_HVMODE); 586 } 587 #else 588 static inline bool kvmhv_on_pseries(void) 589 { 590 return false; 591 } 592 #endif 593 594 #ifdef CONFIG_KVM_XICS 595 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 596 { 597 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 598 } 599 600 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 601 struct kvm *kvm) 602 { 603 if (kvm && kvm_irq_bypass) 604 return kvm->arch.pimap; 605 return NULL; 606 } 607 608 extern void kvmppc_alloc_host_rm_ops(void); 609 extern void kvmppc_free_host_rm_ops(void); 610 extern void kvmppc_free_pimap(struct kvm *kvm); 611 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); 612 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 613 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 614 extern int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req); 615 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 616 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 617 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 618 struct kvm_vcpu *vcpu, u32 cpu); 619 extern void kvmppc_xics_ipi_action(void); 620 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq, 621 unsigned long host_irq); 622 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 623 unsigned long host_irq); 624 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr, 625 struct kvmppc_irq_map *irq_map, 626 struct kvmppc_passthru_irqmap *pimap, 627 bool *again); 628 629 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 630 int level, bool line_status); 631 632 extern int h_ipi_redirect; 633 #else 634 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 635 struct kvm *kvm) 636 { return NULL; } 637 static inline void kvmppc_alloc_host_rm_ops(void) {} 638 static inline void kvmppc_free_host_rm_ops(void) {} 639 static inline void kvmppc_free_pimap(struct kvm *kvm) {} 640 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) 641 { return 0; } 642 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 643 { return 0; } 644 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 645 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 646 { return 0; } 647 static inline int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req) 648 { return 0; } 649 #endif 650 651 #ifdef CONFIG_KVM_XIVE 652 /* 653 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine" 654 * ie. P9 new interrupt controller, while the second "xive" is the legacy 655 * "eXternal Interrupt Vector Entry" which is the configuration of an 656 * interrupt on the "xics" interrupt controller on P8 and earlier. Those 657 * two function consume or produce a legacy "XIVE" state from the 658 * new "XIVE" interrupt controller. 659 */ 660 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 661 u32 priority); 662 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 663 u32 *priority); 664 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq); 665 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq); 666 667 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 668 struct kvm_vcpu *vcpu, u32 cpu); 669 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu); 670 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 671 unsigned long host_irq); 672 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 673 unsigned long host_irq); 674 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu); 675 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 676 677 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 678 int level, bool line_status); 679 extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu); 680 extern void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu); 681 extern bool kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu); 682 683 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu) 684 { 685 return vcpu->arch.irq_type == KVMPPC_IRQ_XIVE; 686 } 687 688 extern int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev, 689 struct kvm_vcpu *vcpu, u32 cpu); 690 extern void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu); 691 extern int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu, 692 union kvmppc_one_reg *val); 693 extern int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu, 694 union kvmppc_one_reg *val); 695 extern bool kvmppc_xive_native_supported(void); 696 697 #else 698 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 699 u32 priority) { return -1; } 700 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 701 u32 *priority) { return -1; } 702 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; } 703 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; } 704 705 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 706 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } 707 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { } 708 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 709 struct irq_desc *host_desc) { return -ENODEV; } 710 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 711 struct irq_desc *host_desc) { return -ENODEV; } 712 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; } 713 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; } 714 715 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 716 int level, bool line_status) { return -ENODEV; } 717 static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { } 718 static inline void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu) { } 719 static inline bool kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu) { return true; } 720 721 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu) 722 { return 0; } 723 static inline int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev, 724 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } 725 static inline void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu) { } 726 static inline int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu, 727 union kvmppc_one_reg *val) 728 { return 0; } 729 static inline int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu, 730 union kvmppc_one_reg *val) 731 { return -ENOENT; } 732 733 #endif /* CONFIG_KVM_XIVE */ 734 735 #if defined(CONFIG_PPC_POWERNV) && defined(CONFIG_KVM_BOOK3S_64_HANDLER) 736 static inline bool xics_on_xive(void) 737 { 738 return xive_enabled() && cpu_has_feature(CPU_FTR_HVMODE); 739 } 740 #else 741 static inline bool xics_on_xive(void) 742 { 743 return false; 744 } 745 #endif 746 747 /* 748 * Prototypes for functions called only from assembler code. 749 * Having prototypes reduces sparse errors. 750 */ 751 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 752 unsigned long ioba, unsigned long tce); 753 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu, 754 unsigned long liobn, unsigned long ioba, 755 unsigned long tce_list, unsigned long npages); 756 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, 757 unsigned long liobn, unsigned long ioba, 758 unsigned long tce_value, unsigned long npages); 759 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, 760 unsigned int yield_count); 761 long kvmppc_rm_h_random(struct kvm_vcpu *vcpu); 762 void kvmhv_commence_exit(int trap); 763 void kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); 764 void kvmppc_subcore_enter_guest(void); 765 void kvmppc_subcore_exit_guest(void); 766 long kvmppc_realmode_hmi_handler(void); 767 long kvmppc_p9_realmode_hmi_handler(struct kvm_vcpu *vcpu); 768 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 769 long pte_index, unsigned long pteh, unsigned long ptel); 770 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, 771 unsigned long pte_index, unsigned long avpn); 772 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); 773 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, 774 unsigned long pte_index, unsigned long avpn); 775 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, 776 unsigned long pte_index); 777 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, 778 unsigned long pte_index); 779 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, 780 unsigned long pte_index); 781 long kvmppc_rm_h_page_init(struct kvm_vcpu *vcpu, unsigned long flags, 782 unsigned long dest, unsigned long src); 783 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, 784 unsigned long slb_v, unsigned int status, bool data); 785 void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu); 786 787 /* 788 * Host-side operations we want to set up while running in real 789 * mode in the guest operating on the xics. 790 * Currently only VCPU wakeup is supported. 791 */ 792 793 union kvmppc_rm_state { 794 unsigned long raw; 795 struct { 796 u32 in_host; 797 u32 rm_action; 798 }; 799 }; 800 801 struct kvmppc_host_rm_core { 802 union kvmppc_rm_state rm_state; 803 void *rm_data; 804 char pad[112]; 805 }; 806 807 struct kvmppc_host_rm_ops { 808 struct kvmppc_host_rm_core *rm_core; 809 void (*vcpu_kick)(struct kvm_vcpu *vcpu); 810 }; 811 812 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; 813 814 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 815 { 816 #ifdef CONFIG_KVM_BOOKE_HV 817 return mfspr(SPRN_GEPR); 818 #elif defined(CONFIG_BOOKE) 819 return vcpu->arch.epr; 820 #else 821 return 0; 822 #endif 823 } 824 825 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 826 { 827 #ifdef CONFIG_KVM_BOOKE_HV 828 mtspr(SPRN_GEPR, epr); 829 #elif defined(CONFIG_BOOKE) 830 vcpu->arch.epr = epr; 831 #endif 832 } 833 834 #ifdef CONFIG_KVM_MPIC 835 836 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 837 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 838 u32 cpu); 839 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 840 841 #else 842 843 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 844 { 845 } 846 847 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 848 struct kvm_vcpu *vcpu, u32 cpu) 849 { 850 return -EINVAL; 851 } 852 853 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 854 struct kvm_vcpu *vcpu) 855 { 856 } 857 858 #endif /* CONFIG_KVM_MPIC */ 859 860 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 861 struct kvm_config_tlb *cfg); 862 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 863 struct kvm_dirty_tlb *cfg); 864 865 long kvmppc_alloc_lpid(void); 866 void kvmppc_free_lpid(long lpid); 867 void kvmppc_init_lpid(unsigned long nr_lpids); 868 869 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) 870 { 871 struct page *page; 872 /* 873 * We can only access pages that the kernel maps 874 * as memory. Bail out for unmapped ones. 875 */ 876 if (!pfn_valid(pfn)) 877 return; 878 879 /* Clear i-cache for new pages */ 880 page = pfn_to_page(pfn); 881 if (!test_bit(PG_dcache_clean, &page->flags)) { 882 flush_dcache_icache_page(page); 883 set_bit(PG_dcache_clean, &page->flags); 884 } 885 } 886 887 /* 888 * Shared struct helpers. The shared struct can be little or big endian, 889 * depending on the guest endianness. So expose helpers to all of them. 890 */ 891 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 892 { 893 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 894 /* Only Book3S_64 PR supports bi-endian for now */ 895 return vcpu->arch.shared_big_endian; 896 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 897 /* Book3s_64 HV on little endian is always little endian */ 898 return false; 899 #else 900 return true; 901 #endif 902 } 903 904 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 905 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 906 { \ 907 return mfspr(bookehv_spr); \ 908 } \ 909 910 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 911 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 912 { \ 913 mtspr(bookehv_spr, val); \ 914 } \ 915 916 #define SHARED_WRAPPER_GET(reg, size) \ 917 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 918 { \ 919 if (kvmppc_shared_big_endian(vcpu)) \ 920 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 921 else \ 922 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 923 } \ 924 925 #define SHARED_WRAPPER_SET(reg, size) \ 926 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 927 { \ 928 if (kvmppc_shared_big_endian(vcpu)) \ 929 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 930 else \ 931 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 932 } \ 933 934 #define SHARED_WRAPPER(reg, size) \ 935 SHARED_WRAPPER_GET(reg, size) \ 936 SHARED_WRAPPER_SET(reg, size) \ 937 938 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 939 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 940 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 941 942 #ifdef CONFIG_KVM_BOOKE_HV 943 944 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 945 SPRNG_WRAPPER(reg, bookehv_spr) \ 946 947 #else 948 949 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 950 SHARED_WRAPPER(reg, size) \ 951 952 #endif 953 954 SHARED_WRAPPER(critical, 64) 955 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 956 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 957 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 958 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 959 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 960 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 961 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 962 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 963 SHARED_WRAPPER_GET(msr, 64) 964 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 965 { 966 if (kvmppc_shared_big_endian(vcpu)) 967 vcpu->arch.shared->msr = cpu_to_be64(val); 968 else 969 vcpu->arch.shared->msr = cpu_to_le64(val); 970 } 971 SHARED_WRAPPER(dsisr, 32) 972 SHARED_WRAPPER(int_pending, 32) 973 SHARED_WRAPPER(sprg4, 64) 974 SHARED_WRAPPER(sprg5, 64) 975 SHARED_WRAPPER(sprg6, 64) 976 SHARED_WRAPPER(sprg7, 64) 977 978 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 979 { 980 if (kvmppc_shared_big_endian(vcpu)) 981 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 982 else 983 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 984 } 985 986 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 987 { 988 if (kvmppc_shared_big_endian(vcpu)) 989 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 990 else 991 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 992 } 993 994 /* 995 * Please call after prepare_to_enter. This function puts the lazy ee and irq 996 * disabled tracking state back to normal mode, without actually enabling 997 * interrupts. 998 */ 999 static inline void kvmppc_fix_ee_before_entry(void) 1000 { 1001 trace_hardirqs_on(); 1002 1003 #ifdef CONFIG_PPC64 1004 /* 1005 * To avoid races, the caller must have gone directly from having 1006 * interrupts fully-enabled to hard-disabled. 1007 */ 1008 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 1009 1010 /* Only need to enable IRQs by hard enabling them after this */ 1011 local_paca->irq_happened = 0; 1012 irq_soft_mask_set(IRQS_ENABLED); 1013 #endif 1014 } 1015 1016 static inline void kvmppc_fix_ee_after_exit(void) 1017 { 1018 #ifdef CONFIG_PPC64 1019 /* Only need to enable IRQs by hard enabling them after this */ 1020 local_paca->irq_happened = PACA_IRQ_HARD_DIS; 1021 irq_soft_mask_set(IRQS_ALL_DISABLED); 1022 #endif 1023 1024 trace_hardirqs_off(); 1025 } 1026 1027 1028 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 1029 { 1030 ulong ea; 1031 ulong msr_64bit = 0; 1032 1033 ea = kvmppc_get_gpr(vcpu, rb); 1034 if (ra) 1035 ea += kvmppc_get_gpr(vcpu, ra); 1036 1037 #if defined(CONFIG_PPC_BOOK3E_64) 1038 msr_64bit = MSR_CM; 1039 #elif defined(CONFIG_PPC_BOOK3S_64) 1040 msr_64bit = MSR_SF; 1041 #endif 1042 1043 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 1044 ea = (uint32_t)ea; 1045 1046 return ea; 1047 } 1048 1049 extern void xics_wake_cpu(int cpu); 1050 1051 #endif /* __POWERPC_KVM_PPC_H__ */ 1052