arch/x86/kvm/mmu/mmutrace.h

   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_CONTINUE);
  58 TRACE_DEFINE_ENUM(RET_PF_RETRY);
  59 TRACE_DEFINE_ENUM(RET_PF_EMULATE);
  60 TRACE_DEFINE_ENUM(RET_PF_WRITE_PROTECTED);
  61 TRACE_DEFINE_ENUM(RET_PF_INVALID);
  62 TRACE_DEFINE_ENUM(RET_PF_FIXED);
  63 TRACE_DEFINE_ENUM(RET_PF_SPURIOUS);
  64
  65 /*
  66  * A pagetable walk has started
  67  */
  68 TRACE_EVENT(
  69         kvm_mmu_pagetable_walk,
  70         TP_PROTO(u64 addr, u32 pferr),
  71         TP_ARGS(addr, pferr),
  72
  73         TP_STRUCT__entry(
  74                 __field(__u64, addr)
  75                 __field(__u32, pferr)
  76         ),
  77
  78         TP_fast_assign(
  79                 __entry->addr = addr;
  80                 __entry->pferr = pferr;
  81         ),
  82
  83         TP_printk("addr %llx pferr %x %s", __entry->addr, __entry->pferr,
  84                   __print_flags(__entry->pferr, "|", kvm_mmu_trace_pferr_flags))
  85 );
  86
  87
  88 /* We just walked a paging element */
  89 TRACE_EVENT(
  90         kvm_mmu_paging_element,
  91         TP_PROTO(u64 pte, int level),
  92         TP_ARGS(pte, level),
  93
  94         TP_STRUCT__entry(
  95                 __field(__u64, pte)
  96                 __field(__u32, level)
  97                 ),
  98
  99         TP_fast_assign(
 100                 __entry->pte = pte;
 101                 __entry->level = level;
 102                 ),
 103
 104         TP_printk("pte %llx level %u", __entry->pte, __entry->level)
 105 );
 106
 107 DECLARE_EVENT_CLASS(kvm_mmu_set_bit_class,
 108
 109         TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
 110
 111         TP_ARGS(table_gfn, index, size),
 112
 113         TP_STRUCT__entry(
 114                 __field(__u64, gpa)
 115         ),
 116
 117         TP_fast_assign(
 118                 __entry->gpa = ((u64)table_gfn << PAGE_SHIFT)
 119                                 + index * size;
 120                 ),
 121
 122         TP_printk("gpa %llx", __entry->gpa)
 123 );
 124
 125 /* We set a pte accessed bit */
 126 DEFINE_EVENT(kvm_mmu_set_bit_class, kvm_mmu_set_accessed_bit,
 127
 128         TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
 129
 130         TP_ARGS(table_gfn, index, size)
 131 );
 132
 133 /* We set a pte dirty bit */
 134 DEFINE_EVENT(kvm_mmu_set_bit_class, kvm_mmu_set_dirty_bit,
 135
 136         TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
 137
 138         TP_ARGS(table_gfn, index, size)
 139 );
 140
 141 TRACE_EVENT(
 142         kvm_mmu_walker_error,
 143         TP_PROTO(u32 pferr),
 144         TP_ARGS(pferr),
 145
 146         TP_STRUCT__entry(
 147                 __field(__u32, pferr)
 148                 ),
 149
 150         TP_fast_assign(
 151                 __entry->pferr = pferr;
 152                 ),
 153
 154         TP_printk("pferr %x %s", __entry->pferr,
 155                   __print_flags(__entry->pferr, "|", kvm_mmu_trace_pferr_flags))
 156 );
 157
 158 TRACE_EVENT(
 159         kvm_mmu_get_page,
 160         TP_PROTO(struct kvm_mmu_page *sp, bool created),
 161         TP_ARGS(sp, created),
 162
 163         TP_STRUCT__entry(
 164                 KVM_MMU_PAGE_FIELDS
 165                 __field(bool, created)
 166                 ),
 167
 168         TP_fast_assign(
 169                 KVM_MMU_PAGE_ASSIGN(sp)
 170                 __entry->created = created;
 171                 ),
 172
 173         TP_printk("%s %s", KVM_MMU_PAGE_PRINTK(),
 174                   __entry->created ? "new" : "existing")
 175 );
 176
 177 DECLARE_EVENT_CLASS(kvm_mmu_page_class,
 178
 179         TP_PROTO(struct kvm_mmu_page *sp),
 180         TP_ARGS(sp),
 181
 182         TP_STRUCT__entry(
 183                 KVM_MMU_PAGE_FIELDS
 184         ),
 185
 186         TP_fast_assign(
 187                 KVM_MMU_PAGE_ASSIGN(sp)
 188         ),
 189
 190         TP_printk("%s", KVM_MMU_PAGE_PRINTK())
 191 );
 192
 193 DEFINE_EVENT(kvm_mmu_page_class, kvm_mmu_sync_page,
 194         TP_PROTO(struct kvm_mmu_page *sp),
 195
 196         TP_ARGS(sp)
 197 );
 198
 199 DEFINE_EVENT(kvm_mmu_page_class, kvm_mmu_unsync_page,
 200         TP_PROTO(struct kvm_mmu_page *sp),
 201
 202         TP_ARGS(sp)
 203 );
 204
 205 DEFINE_EVENT(kvm_mmu_page_class, kvm_mmu_prepare_zap_page,
 206         TP_PROTO(struct kvm_mmu_page *sp),
 207
 208         TP_ARGS(sp)
 209 );
 210
 211 TRACE_EVENT(
 212         mark_mmio_spte,
 213         TP_PROTO(u64 *sptep, gfn_t gfn, u64 spte),
 214         TP_ARGS(sptep, gfn, spte),
 215
 216         TP_STRUCT__entry(
 217                 __field(void *, sptep)
 218                 __field(gfn_t, gfn)
 219                 __field(unsigned, access)
 220                 __field(unsigned int, gen)
 221         ),
 222
 223         TP_fast_assign(
 224                 __entry->sptep = sptep;
 225                 __entry->gfn = gfn;
 226                 __entry->access = spte & ACC_ALL;
 227                 __entry->gen = get_mmio_spte_generation(spte);
 228         ),
 229
 230         TP_printk("sptep:%p gfn %llx access %x gen %x", __entry->sptep,
 231                   __entry->gfn, __entry->access, __entry->gen)
 232 );
 233
 234 TRACE_EVENT(
 235         handle_mmio_page_fault,
 236         TP_PROTO(u64 addr, gfn_t gfn, unsigned access),
 237         TP_ARGS(addr, gfn, access),
 238
 239         TP_STRUCT__entry(
 240                 __field(u64, addr)
 241                 __field(gfn_t, gfn)
 242                 __field(unsigned, access)
 243         ),
 244
 245         TP_fast_assign(
 246                 __entry->addr = addr;
 247                 __entry->gfn = gfn;
 248                 __entry->access = access;
 249         ),
 250
 251         TP_printk("addr:%llx gfn %llx access %x", __entry->addr, __entry->gfn,
 252                   __entry->access)
 253 );
 254
 255 TRACE_EVENT(
 256         fast_page_fault,
 257         TP_PROTO(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault,
 258                  u64 *sptep, u64 old_spte, int ret),
 259         TP_ARGS(vcpu, fault, sptep, old_spte, ret),
 260
 261         TP_STRUCT__entry(
 262                 __field(int, vcpu_id)
 263                 __field(gpa_t, cr2_or_gpa)
 264                 __field(u64, error_code)
 265                 __field(u64 *, sptep)
 266                 __field(u64, old_spte)
 267                 __field(u64, new_spte)
 268                 __field(int, ret)
 269         ),
 270
 271         TP_fast_assign(
 272                 __entry->vcpu_id = vcpu->vcpu_id;
 273                 __entry->cr2_or_gpa = fault->addr;
 274                 __entry->error_code = fault->error_code;
 275                 __entry->sptep = sptep;
 276                 __entry->old_spte = old_spte;
 277                 __entry->new_spte = *sptep;
 278                 __entry->ret = ret;
 279         ),
 280
 281         TP_printk("vcpu %d gva %llx error_code %s sptep %p old %#llx"
 282                   " new %llx spurious %d fixed %d", __entry->vcpu_id,
 283                   __entry->cr2_or_gpa, __print_flags(__entry->error_code, "|",
 284                   kvm_mmu_trace_pferr_flags), __entry->sptep,
 285                   __entry->old_spte, __entry->new_spte,
 286                   __entry->ret == RET_PF_SPURIOUS, __entry->ret == RET_PF_FIXED
 287         )
 288 );
 289
 290 TRACE_EVENT(
 291         kvm_mmu_zap_all_fast,
 292         TP_PROTO(struct kvm *kvm),
 293         TP_ARGS(kvm),
 294
 295         TP_STRUCT__entry(
 296                 __field(__u8, mmu_valid_gen)
 297                 __field(unsigned int, mmu_used_pages)
 298         ),
 299
 300         TP_fast_assign(
 301                 __entry->mmu_valid_gen = kvm->arch.mmu_valid_gen;
 302                 __entry->mmu_used_pages = kvm->arch.n_used_mmu_pages;
 303         ),
 304
 305         TP_printk("kvm-mmu-valid-gen %u used_pages %x",
 306                   __entry->mmu_valid_gen, __entry->mmu_used_pages
 307         )
 308 );
 309
 310
 311 TRACE_EVENT(
 312         check_mmio_spte,
 313         TP_PROTO(u64 spte, unsigned int kvm_gen, unsigned int spte_gen),
 314         TP_ARGS(spte, kvm_gen, spte_gen),
 315
 316         TP_STRUCT__entry(
 317                 __field(unsigned int, kvm_gen)
 318                 __field(unsigned int, spte_gen)
 319                 __field(u64, spte)
 320         ),
 321
 322         TP_fast_assign(
 323                 __entry->kvm_gen = kvm_gen;
 324                 __entry->spte_gen = spte_gen;
 325                 __entry->spte = spte;
 326         ),
 327
 328         TP_printk("spte %llx kvm_gen %x spte-gen %x valid %d", __entry->spte,
 329                   __entry->kvm_gen, __entry->spte_gen,
 330                   __entry->kvm_gen == __entry->spte_gen
 331         )
 332 );
 333
 334 TRACE_EVENT(
 335         kvm_mmu_set_spte,
 336         TP_PROTO(int level, gfn_t gfn, u64 *sptep),
 337         TP_ARGS(level, gfn, sptep),
 338
 339         TP_STRUCT__entry(
 340                 __field(u64, gfn)
 341                 __field(u64, spte)
 342                 __field(u64, sptep)
 343                 __field(u8, level)
 344                 /* These depend on page entry type, so compute them now.  */
 345                 __field(bool, r)
 346                 __field(bool, x)
 347                 __field(signed char, u)
 348         ),
 349
 350         TP_fast_assign(
 351                 __entry->gfn = gfn;
 352                 __entry->spte = *sptep;
 353                 __entry->sptep = virt_to_phys(sptep);
 354                 __entry->level = level;
 355                 __entry->r = shadow_present_mask || (__entry->spte & PT_PRESENT_MASK);
 356                 __entry->x = is_executable_pte(__entry->spte);
 357                 __entry->u = shadow_user_mask ? !!(__entry->spte & shadow_user_mask) : -1;
 358         ),
 359
 360         TP_printk("gfn %llx spte %llx (%s%s%s%s) level %d at %llx",
 361                   __entry->gfn, __entry->spte,
 362                   __entry->r ? "r" : "-",
 363                   __entry->spte & PT_WRITABLE_MASK ? "w" : "-",
 364                   __entry->x ? "x" : "-",
 365                   __entry->u == -1 ? "" : (__entry->u ? "u" : "-"),
 366                   __entry->level, __entry->sptep
 367         )
 368 );
 369
 370 TRACE_EVENT(
 371         kvm_mmu_spte_requested,
 372         TP_PROTO(struct kvm_page_fault *fault),
 373         TP_ARGS(fault),
 374
 375         TP_STRUCT__entry(
 376                 __field(u64, gfn)
 377                 __field(u64, pfn)
 378                 __field(u8, level)
 379         ),
 380
 381         TP_fast_assign(
 382                 __entry->gfn = fault->gfn;
 383                 __entry->pfn = fault->pfn | (fault->gfn & (KVM_PAGES_PER_HPAGE(fault->goal_level) - 1));
 384                 __entry->level = fault->goal_level;
 385         ),
 386
 387         TP_printk("gfn %llx pfn %llx level %d",
 388                   __entry->gfn, __entry->pfn, __entry->level
 389         )
 390 );
 391
 392 TRACE_EVENT(
 393         kvm_tdp_mmu_spte_changed,
 394         TP_PROTO(int as_id, gfn_t gfn, int level, u64 old_spte, u64 new_spte),
 395         TP_ARGS(as_id, gfn, level, old_spte, new_spte),
 396
 397         TP_STRUCT__entry(
 398                 __field(u64, gfn)
 399                 __field(u64, old_spte)
 400                 __field(u64, new_spte)
 401                 /* Level cannot be larger than 5 on x86, so it fits in a u8. */
 402                 __field(u8, level)
 403                 /* as_id can only be 0 or 1 x86, so it fits in a u8. */
 404                 __field(u8, as_id)
 405         ),
 406
 407         TP_fast_assign(
 408                 __entry->gfn = gfn;
 409                 __entry->old_spte = old_spte;
 410                 __entry->new_spte = new_spte;
 411                 __entry->level = level;
 412                 __entry->as_id = as_id;
 413         ),
 414
 415         TP_printk("as id %d gfn %llx level %d old_spte %llx new_spte %llx",
 416                   __entry->as_id, __entry->gfn, __entry->level,
 417                   __entry->old_spte, __entry->new_spte
 418         )
 419 );
 420
 421 TRACE_EVENT(
 422         kvm_mmu_split_huge_page,
 423         TP_PROTO(u64 gfn, u64 spte, int level, int errno),
 424         TP_ARGS(gfn, spte, level, errno),
 425
 426         TP_STRUCT__entry(
 427                 __field(u64, gfn)
 428                 __field(u64, spte)
 429                 __field(int, level)
 430                 __field(int, errno)
 431         ),
 432
 433         TP_fast_assign(
 434                 __entry->gfn = gfn;
 435                 __entry->spte = spte;
 436                 __entry->level = level;
 437                 __entry->errno = errno;
 438         ),
 439
 440         TP_printk("gfn %llx spte %llx level %d errno %d",
 441                   __entry->gfn, __entry->spte, __entry->level, __entry->errno)
 442 );
 443
 444 #endif /* _TRACE_KVMMMU_H */
 445
 446 #undef TRACE_INCLUDE_PATH
 447 #define TRACE_INCLUDE_PATH mmu
 448 #undef TRACE_INCLUDE_FILE
 449 #define TRACE_INCLUDE_FILE mmutrace
 450
 451 /* This part must be outside protection */
 452 #include <trace/define_trace.h>