1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #if !defined(_TRACE_KVMMMU_H) || defined(TRACE_HEADER_MULTI_READ) 3 #define _TRACE_KVMMMU_H 4 5 #include <linux/tracepoint.h> 6 #include <linux/trace_events.h> 7 8 #undef TRACE_SYSTEM 9 #define TRACE_SYSTEM kvmmmu 10 11 #define KVM_MMU_PAGE_FIELDS \ 12 __field(__u8, mmu_valid_gen) \ 13 __field(__u64, gfn) \ 14 __field(__u32, role) \ 15 __field(__u32, root_count) \ 16 __field(bool, unsync) 17 18 #define KVM_MMU_PAGE_ASSIGN(sp) \ 19 __entry->mmu_valid_gen = sp->mmu_valid_gen; \ 20 __entry->gfn = sp->gfn; \ 21 __entry->role = sp->role.word; \ 22 __entry->root_count = sp->root_count; \ 23 __entry->unsync = sp->unsync; 24 25 #define KVM_MMU_PAGE_PRINTK() ({ \ 26 const char *saved_ptr = trace_seq_buffer_ptr(p); \ 27 static const char *access_str[] = { \ 28 "---", "--x", "w--", "w-x", "-u-", "-ux", "wu-", "wux" \ 29 }; \ 30 union kvm_mmu_page_role role; \ 31 \ 32 role.word = __entry->role; \ 33 \ 34 trace_seq_printf(p, "sp gen %u gfn %llx l%u %u-byte q%u%s %s%s" \ 35 " %snxe %sad root %u %s%c", \ 36 __entry->mmu_valid_gen, \ 37 __entry->gfn, role.level, \ 38 role.has_4_byte_gpte ? 4 : 8, \ 39 role.quadrant, \ 40 role.direct ? " direct" : "", \ 41 access_str[role.access], \ 42 role.invalid ? " invalid" : "", \ 43 role.efer_nx ? "" : "!", \ 44 role.ad_disabled ? "!" : "", \ 45 __entry->root_count, \ 46 __entry->unsync ? "unsync" : "sync", 0); \ 47 saved_ptr; \ 48 }) 49 50 #define kvm_mmu_trace_pferr_flags \ 51 { PFERR_PRESENT_MASK, "P" }, \ 52 { PFERR_WRITE_MASK, "W" }, \ 53 { PFERR_USER_MASK, "U" }, \ 54 { PFERR_RSVD_MASK, "RSVD" }, \ 55 { PFERR_FETCH_MASK, "F" } 56 57 TRACE_DEFINE_ENUM(RET_PF_RETRY); 58 TRACE_DEFINE_ENUM(RET_PF_EMULATE); 59 TRACE_DEFINE_ENUM(RET_PF_INVALID); 60 TRACE_DEFINE_ENUM(RET_PF_FIXED); 61 TRACE_DEFINE_ENUM(RET_PF_SPURIOUS); 62 63 /* 64 * A pagetable walk has started 65 */ 66 TRACE_EVENT( 67 kvm_mmu_pagetable_walk, 68 TP_PROTO(u64 addr, u32 pferr), 69 TP_ARGS(addr, pferr), 70 71 TP_STRUCT__entry( 72 __field(__u64, addr) 73 __field(__u32, pferr) 74 ), 75 76 TP_fast_assign( 77 __entry->addr = addr; 78 __entry->pferr = pferr; 79 ), 80 81 TP_printk("addr %llx pferr %x %s", __entry->addr, __entry->pferr, 82 __print_flags(__entry->pferr, "|", kvm_mmu_trace_pferr_flags)) 83 ); 84 85 86 /* We just walked a paging element */ 87 TRACE_EVENT( 88 kvm_mmu_paging_element, 89 TP_PROTO(u64 pte, int level), 90 TP_ARGS(pte, level), 91 92 TP_STRUCT__entry( 93 __field(__u64, pte) 94 __field(__u32, level) 95 ), 96 97 TP_fast_assign( 98 __entry->pte = pte; 99 __entry->level = level; 100 ), 101 102 TP_printk("pte %llx level %u", __entry->pte, __entry->level) 103 ); 104 105 DECLARE_EVENT_CLASS(kvm_mmu_set_bit_class, 106 107 TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size), 108 109 TP_ARGS(table_gfn, index, size), 110 111 TP_STRUCT__entry( 112 __field(__u64, gpa) 113 ), 114 115 TP_fast_assign( 116 __entry->gpa = ((u64)table_gfn << PAGE_SHIFT) 117 + index * size; 118 ), 119 120 TP_printk("gpa %llx", __entry->gpa) 121 ); 122 123 /* We set a pte accessed bit */ 124 DEFINE_EVENT(kvm_mmu_set_bit_class, kvm_mmu_set_accessed_bit, 125 126 TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size), 127 128 TP_ARGS(table_gfn, index, size) 129 ); 130 131 /* We set a pte dirty bit */ 132 DEFINE_EVENT(kvm_mmu_set_bit_class, kvm_mmu_set_dirty_bit, 133 134 TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size), 135 136 TP_ARGS(table_gfn, index, size) 137 ); 138 139 TRACE_EVENT( 140 kvm_mmu_walker_error, 141 TP_PROTO(u32 pferr), 142 TP_ARGS(pferr), 143 144 TP_STRUCT__entry( 145 __field(__u32, pferr) 146 ), 147 148 TP_fast_assign( 149 __entry->pferr = pferr; 150 ), 151 152 TP_printk("pferr %x %s", __entry->pferr, 153 __print_flags(__entry->pferr, "|", kvm_mmu_trace_pferr_flags)) 154 ); 155 156 TRACE_EVENT( 157 kvm_mmu_get_page, 158 TP_PROTO(struct kvm_mmu_page *sp, bool created), 159 TP_ARGS(sp, created), 160 161 TP_STRUCT__entry( 162 KVM_MMU_PAGE_FIELDS 163 __field(bool, created) 164 ), 165 166 TP_fast_assign( 167 KVM_MMU_PAGE_ASSIGN(sp) 168 __entry->created = created; 169 ), 170 171 TP_printk("%s %s", KVM_MMU_PAGE_PRINTK(), 172 __entry->created ? "new" : "existing") 173 ); 174 175 DECLARE_EVENT_CLASS(kvm_mmu_page_class, 176 177 TP_PROTO(struct kvm_mmu_page *sp), 178 TP_ARGS(sp), 179 180 TP_STRUCT__entry( 181 KVM_MMU_PAGE_FIELDS 182 ), 183 184 TP_fast_assign( 185 KVM_MMU_PAGE_ASSIGN(sp) 186 ), 187 188 TP_printk("%s", KVM_MMU_PAGE_PRINTK()) 189 ); 190 191 DEFINE_EVENT(kvm_mmu_page_class, kvm_mmu_sync_page, 192 TP_PROTO(struct kvm_mmu_page *sp), 193 194 TP_ARGS(sp) 195 ); 196 197 DEFINE_EVENT(kvm_mmu_page_class, kvm_mmu_unsync_page, 198 TP_PROTO(struct kvm_mmu_page *sp), 199 200 TP_ARGS(sp) 201 ); 202 203 DEFINE_EVENT(kvm_mmu_page_class, kvm_mmu_prepare_zap_page, 204 TP_PROTO(struct kvm_mmu_page *sp), 205 206 TP_ARGS(sp) 207 ); 208 209 TRACE_EVENT( 210 mark_mmio_spte, 211 TP_PROTO(u64 *sptep, gfn_t gfn, u64 spte), 212 TP_ARGS(sptep, gfn, spte), 213 214 TP_STRUCT__entry( 215 __field(void *, sptep) 216 __field(gfn_t, gfn) 217 __field(unsigned, access) 218 __field(unsigned int, gen) 219 ), 220 221 TP_fast_assign( 222 __entry->sptep = sptep; 223 __entry->gfn = gfn; 224 __entry->access = spte & ACC_ALL; 225 __entry->gen = get_mmio_spte_generation(spte); 226 ), 227 228 TP_printk("sptep:%p gfn %llx access %x gen %x", __entry->sptep, 229 __entry->gfn, __entry->access, __entry->gen) 230 ); 231 232 TRACE_EVENT( 233 handle_mmio_page_fault, 234 TP_PROTO(u64 addr, gfn_t gfn, unsigned access), 235 TP_ARGS(addr, gfn, access), 236 237 TP_STRUCT__entry( 238 __field(u64, addr) 239 __field(gfn_t, gfn) 240 __field(unsigned, access) 241 ), 242 243 TP_fast_assign( 244 __entry->addr = addr; 245 __entry->gfn = gfn; 246 __entry->access = access; 247 ), 248 249 TP_printk("addr:%llx gfn %llx access %x", __entry->addr, __entry->gfn, 250 __entry->access) 251 ); 252 253 TRACE_EVENT( 254 fast_page_fault, 255 TP_PROTO(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault, 256 u64 *sptep, u64 old_spte, int ret), 257 TP_ARGS(vcpu, fault, sptep, old_spte, ret), 258 259 TP_STRUCT__entry( 260 __field(int, vcpu_id) 261 __field(gpa_t, cr2_or_gpa) 262 __field(u32, error_code) 263 __field(u64 *, sptep) 264 __field(u64, old_spte) 265 __field(u64, new_spte) 266 __field(int, ret) 267 ), 268 269 TP_fast_assign( 270 __entry->vcpu_id = vcpu->vcpu_id; 271 __entry->cr2_or_gpa = fault->addr; 272 __entry->error_code = fault->error_code; 273 __entry->sptep = sptep; 274 __entry->old_spte = old_spte; 275 __entry->new_spte = *sptep; 276 __entry->ret = ret; 277 ), 278 279 TP_printk("vcpu %d gva %llx error_code %s sptep %p old %#llx" 280 " new %llx spurious %d fixed %d", __entry->vcpu_id, 281 __entry->cr2_or_gpa, __print_flags(__entry->error_code, "|", 282 kvm_mmu_trace_pferr_flags), __entry->sptep, 283 __entry->old_spte, __entry->new_spte, 284 __entry->ret == RET_PF_SPURIOUS, __entry->ret == RET_PF_FIXED 285 ) 286 ); 287 288 TRACE_EVENT( 289 kvm_mmu_zap_all_fast, 290 TP_PROTO(struct kvm *kvm), 291 TP_ARGS(kvm), 292 293 TP_STRUCT__entry( 294 __field(__u8, mmu_valid_gen) 295 __field(unsigned int, mmu_used_pages) 296 ), 297 298 TP_fast_assign( 299 __entry->mmu_valid_gen = kvm->arch.mmu_valid_gen; 300 __entry->mmu_used_pages = kvm->arch.n_used_mmu_pages; 301 ), 302 303 TP_printk("kvm-mmu-valid-gen %u used_pages %x", 304 __entry->mmu_valid_gen, __entry->mmu_used_pages 305 ) 306 ); 307 308 309 TRACE_EVENT( 310 check_mmio_spte, 311 TP_PROTO(u64 spte, unsigned int kvm_gen, unsigned int spte_gen), 312 TP_ARGS(spte, kvm_gen, spte_gen), 313 314 TP_STRUCT__entry( 315 __field(unsigned int, kvm_gen) 316 __field(unsigned int, spte_gen) 317 __field(u64, spte) 318 ), 319 320 TP_fast_assign( 321 __entry->kvm_gen = kvm_gen; 322 __entry->spte_gen = spte_gen; 323 __entry->spte = spte; 324 ), 325 326 TP_printk("spte %llx kvm_gen %x spte-gen %x valid %d", __entry->spte, 327 __entry->kvm_gen, __entry->spte_gen, 328 __entry->kvm_gen == __entry->spte_gen 329 ) 330 ); 331 332 TRACE_EVENT( 333 kvm_mmu_set_spte, 334 TP_PROTO(int level, gfn_t gfn, u64 *sptep), 335 TP_ARGS(level, gfn, sptep), 336 337 TP_STRUCT__entry( 338 __field(u64, gfn) 339 __field(u64, spte) 340 __field(u64, sptep) 341 __field(u8, level) 342 /* These depend on page entry type, so compute them now. */ 343 __field(bool, r) 344 __field(bool, x) 345 __field(signed char, u) 346 ), 347 348 TP_fast_assign( 349 __entry->gfn = gfn; 350 __entry->spte = *sptep; 351 __entry->sptep = virt_to_phys(sptep); 352 __entry->level = level; 353 __entry->r = shadow_present_mask || (__entry->spte & PT_PRESENT_MASK); 354 __entry->x = is_executable_pte(__entry->spte); 355 __entry->u = shadow_user_mask ? !!(__entry->spte & shadow_user_mask) : -1; 356 ), 357 358 TP_printk("gfn %llx spte %llx (%s%s%s%s) level %d at %llx", 359 __entry->gfn, __entry->spte, 360 __entry->r ? "r" : "-", 361 __entry->spte & PT_WRITABLE_MASK ? "w" : "-", 362 __entry->x ? "x" : "-", 363 __entry->u == -1 ? "" : (__entry->u ? "u" : "-"), 364 __entry->level, __entry->sptep 365 ) 366 ); 367 368 TRACE_EVENT( 369 kvm_mmu_spte_requested, 370 TP_PROTO(struct kvm_page_fault *fault), 371 TP_ARGS(fault), 372 373 TP_STRUCT__entry( 374 __field(u64, gfn) 375 __field(u64, pfn) 376 __field(u8, level) 377 ), 378 379 TP_fast_assign( 380 __entry->gfn = fault->gfn; 381 __entry->pfn = fault->pfn | (fault->gfn & (KVM_PAGES_PER_HPAGE(fault->goal_level) - 1)); 382 __entry->level = fault->goal_level; 383 ), 384 385 TP_printk("gfn %llx pfn %llx level %d", 386 __entry->gfn, __entry->pfn, __entry->level 387 ) 388 ); 389 390 TRACE_EVENT( 391 kvm_tdp_mmu_spte_changed, 392 TP_PROTO(int as_id, gfn_t gfn, int level, u64 old_spte, u64 new_spte), 393 TP_ARGS(as_id, gfn, level, old_spte, new_spte), 394 395 TP_STRUCT__entry( 396 __field(u64, gfn) 397 __field(u64, old_spte) 398 __field(u64, new_spte) 399 /* Level cannot be larger than 5 on x86, so it fits in a u8. */ 400 __field(u8, level) 401 /* as_id can only be 0 or 1 x86, so it fits in a u8. */ 402 __field(u8, as_id) 403 ), 404 405 TP_fast_assign( 406 __entry->gfn = gfn; 407 __entry->old_spte = old_spte; 408 __entry->new_spte = new_spte; 409 __entry->level = level; 410 __entry->as_id = as_id; 411 ), 412 413 TP_printk("as id %d gfn %llx level %d old_spte %llx new_spte %llx", 414 __entry->as_id, __entry->gfn, __entry->level, 415 __entry->old_spte, __entry->new_spte 416 ) 417 ); 418 419 #endif /* _TRACE_KVMMMU_H */ 420 421 #undef TRACE_INCLUDE_PATH 422 #define TRACE_INCLUDE_PATH mmu 423 #undef TRACE_INCLUDE_FILE 424 #define TRACE_INCLUDE_FILE mmutrace 425 426 /* This part must be outside protection */ 427 #include <trace/define_trace.h> 428