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.gpte_is_8_bytes ? 8 : 4,                  \
  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, gpa_t cr2_or_gpa, u32 error_code,
 256                  u64 *sptep, u64 old_spte, int ret),
 257         TP_ARGS(vcpu, cr2_or_gpa, error_code, 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 = cr2_or_gpa;
 272                 __entry->error_code = 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(gpa_t addr, int level, kvm_pfn_t pfn),
 371         TP_ARGS(addr, level, pfn),
 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 = addr >> PAGE_SHIFT;
 381                 __entry->pfn = pfn | (__entry->gfn & (KVM_PAGES_PER_HPAGE(level) - 1));
 382                 __entry->level = 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>