instrumentation/events/lttng-module/arch/x86/kvm/trace.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 #if !defined(LTTNG_TRACE_KVM_H) || defined(TRACE_HEADER_MULTI_READ)
   3 #define LTTNG_TRACE_KVM_H
   4
   5 #include <probes/lttng-tracepoint-event.h>
   6 #include <asm/vmx.h>
   7 #include <asm/svm.h>
   8 #include <asm/clocksource.h>
   9 #include <../arch/x86/kvm/lapic.h>
  10 #include <../arch/x86/kvm/kvm_cache_regs.h>
  11
  12 #undef TRACE_SYSTEM
  13 #define TRACE_SYSTEM kvm_x86
  14
  15 /*
  16  * Tracepoint for guest mode entry.
  17  */
  18 LTTNG_TRACEPOINT_EVENT_MAP(kvm_entry, kvm_x86_entry,
  19         TP_PROTO(unsigned int vcpu_id),
  20         TP_ARGS(vcpu_id),
  21
  22         TP_FIELDS(
  23                 ctf_integer(unsigned int, vcpu_id, vcpu_id)
  24         )
  25 )
  26
  27 /*
  28  * Tracepoint for hypercall.
  29  */
  30 LTTNG_TRACEPOINT_EVENT_MAP(kvm_hypercall, kvm_x86_hypercall,
  31         TP_PROTO(unsigned long nr, unsigned long a0, unsigned long a1,
  32                  unsigned long a2, unsigned long a3),
  33         TP_ARGS(nr, a0, a1, a2, a3),
  34
  35         TP_FIELDS(
  36                 ctf_integer(unsigned long, nr, nr)
  37                 ctf_integer(unsigned long, a0, a0)
  38                 ctf_integer(unsigned long, a1, a1)
  39                 ctf_integer(unsigned long, a2, a2)
  40                 ctf_integer(unsigned long, a3, a3)
  41         )
  42 )
  43
  44 /*
  45  * Tracepoint for hypercall.
  46  */
  47 LTTNG_TRACEPOINT_EVENT_MAP(kvm_hv_hypercall, kvm_x86_hv_hypercall,
  48         TP_PROTO(__u16 code, bool fast, __u16 rep_cnt, __u16 rep_idx,
  49                  __u64 ingpa, __u64 outgpa),
  50         TP_ARGS(code, fast, rep_cnt, rep_idx, ingpa, outgpa),
  51
  52         TP_FIELDS(
  53                 ctf_integer(__u16, rep_cnt, rep_cnt)
  54                 ctf_integer(__u16, rep_idx, rep_idx)
  55                 ctf_integer(__u64, ingpa, ingpa)
  56                 ctf_integer(__u64, outgpa, outgpa)
  57                 ctf_integer(__u16, code, code)
  58                 ctf_integer(bool, fast, fast)
  59         )
  60 )
  61
  62 /*
  63  * Tracepoint for PIO.
  64  */
  65 LTTNG_TRACEPOINT_EVENT_MAP(kvm_pio, kvm_x86_pio,
  66         TP_PROTO(unsigned int rw, unsigned int port, unsigned int size,
  67                  unsigned int count),
  68         TP_ARGS(rw, port, size, count),
  69
  70         TP_FIELDS(
  71                 ctf_integer(unsigned int, rw, rw)
  72                 ctf_integer(unsigned int, port, port)
  73                 ctf_integer(unsigned int, size, size)
  74                 ctf_integer(unsigned int, count, count)
  75         )
  76 )
  77
  78 /*
  79  * Tracepoint for cpuid.
  80  */
  81 LTTNG_TRACEPOINT_EVENT_MAP(kvm_cpuid, kvm_x86_cpuid,
  82         TP_PROTO(unsigned int function, unsigned long rax, unsigned long rbx,
  83                  unsigned long rcx, unsigned long rdx),
  84         TP_ARGS(function, rax, rbx, rcx, rdx),
  85
  86         TP_FIELDS(
  87                 ctf_integer(unsigned int, function, function)
  88                 ctf_integer(unsigned long, rax, rax)
  89                 ctf_integer(unsigned long, rbx, rbx)
  90                 ctf_integer(unsigned long, rcx, rcx)
  91                 ctf_integer(unsigned long, rdx, rdx)
  92         )
  93 )
  94
  95 /*
  96  * Tracepoint for apic access.
  97  */
  98 LTTNG_TRACEPOINT_EVENT_MAP(kvm_apic, kvm_x86_apic,
  99         TP_PROTO(unsigned int rw, unsigned int reg, unsigned int val),
 100         TP_ARGS(rw, reg, val),
 101
 102         TP_FIELDS(
 103                 ctf_integer(unsigned int, rw, rw)
 104                 ctf_integer(unsigned int, reg, reg)
 105                 ctf_integer(unsigned int, val, val)
 106         )
 107 )
 108
 109 #define trace_kvm_apic_read(reg, val)           trace_kvm_apic(0, reg, val)
 110 #define trace_kvm_apic_write(reg, val)          trace_kvm_apic(1, reg, val)
 111
 112 /*
 113  * Tracepoint for kvm guest exit:
 114  */
 115 LTTNG_TRACEPOINT_EVENT_CODE_MAP(kvm_exit, kvm_x86_exit,
 116         TP_PROTO(unsigned int exit_reason, struct kvm_vcpu *vcpu, u32 isa),
 117         TP_ARGS(exit_reason, vcpu, isa),
 118
 119         TP_locvar(
 120                 u64 info1, info2;
 121         ),
 122
 123         TP_code_pre(
 124                 kvm_x86_ops.get_exit_info(vcpu, &tp_locvar->info1,
 125                                 &tp_locvar->info2);
 126         ),
 127
 128         TP_FIELDS(
 129                 ctf_integer(unsigned int, exit_reason, exit_reason)
 130                 ctf_integer(unsigned long, guest_rip, kvm_rip_read(vcpu))
 131                 ctf_integer(u32, isa, isa)
 132                 ctf_integer(u64, info1, tp_locvar->info1)
 133                 ctf_integer(u64, info2, tp_locvar->info2)
 134         ),
 135
 136         TP_code_post()
 137 )
 138
 139 /*
 140  * Tracepoint for kvm interrupt injection:
 141  */
 142 LTTNG_TRACEPOINT_EVENT_MAP(kvm_inj_virq, kvm_x86_inj_virq,
 143         TP_PROTO(unsigned int irq),
 144         TP_ARGS(irq),
 145
 146         TP_FIELDS(
 147                 ctf_integer(unsigned int, irq, irq)
 148         )
 149 )
 150
 151 /*
 152  * Tracepoint for kvm interrupt injection:
 153  */
 154 LTTNG_TRACEPOINT_EVENT_MAP(kvm_inj_exception, kvm_x86_inj_exception,
 155         TP_PROTO(unsigned exception, bool has_error, unsigned error_code),
 156         TP_ARGS(exception, has_error, error_code),
 157
 158         TP_FIELDS(
 159                 ctf_integer(u8, exception, exception)
 160                 ctf_integer(u8, has_error, has_error)
 161                 ctf_integer(u32, error_code, error_code)
 162         )
 163 )
 164
 165 /*
 166  * Tracepoint for page fault.
 167  */
 168 LTTNG_TRACEPOINT_EVENT_MAP(kvm_page_fault, kvm_x86_page_fault,
 169         TP_PROTO(unsigned long fault_address, unsigned int error_code),
 170         TP_ARGS(fault_address, error_code),
 171
 172         TP_FIELDS(
 173                 ctf_integer_hex(unsigned long, fault_address, fault_address)
 174                 ctf_integer(unsigned int, error_code, error_code)
 175         )
 176 )
 177
 178 /*
 179  * Tracepoint for guest MSR access.
 180  */
 181 LTTNG_TRACEPOINT_EVENT_MAP(kvm_msr, kvm_x86_msr,
 182         TP_PROTO(unsigned write, u32 ecx, u64 data, bool exception),
 183         TP_ARGS(write, ecx, data, exception),
 184
 185         TP_FIELDS(
 186                 ctf_integer(unsigned, write, write)
 187                 ctf_integer(u32, ecx, ecx)
 188                 ctf_integer(u64, data, data)
 189                 ctf_integer(u8, exception, exception)
 190         )
 191 )
 192
 193 #define trace_kvm_msr_read(ecx, data)      trace_kvm_msr(0, ecx, data, false)
 194 #define trace_kvm_msr_write(ecx, data)     trace_kvm_msr(1, ecx, data, false)
 195 #define trace_kvm_msr_read_ex(ecx)         trace_kvm_msr(0, ecx, 0, true)
 196 #define trace_kvm_msr_write_ex(ecx, data)  trace_kvm_msr(1, ecx, data, true)
 197
 198 /*
 199  * Tracepoint for guest CR access.
 200  */
 201 LTTNG_TRACEPOINT_EVENT_MAP(kvm_cr, kvm_x86_cr,
 202         TP_PROTO(unsigned int rw, unsigned int cr, unsigned long val),
 203         TP_ARGS(rw, cr, val),
 204
 205         TP_FIELDS(
 206                 ctf_integer(unsigned int, rw, rw)
 207                 ctf_integer(unsigned int, cr, cr)
 208                 ctf_integer(unsigned long, val, val)
 209         )
 210 )
 211
 212 #define trace_kvm_cr_read(cr, val)              trace_kvm_cr(0, cr, val)
 213 #define trace_kvm_cr_write(cr, val)             trace_kvm_cr(1, cr, val)
 214
 215 LTTNG_TRACEPOINT_EVENT_MAP(kvm_pic_set_irq, kvm_x86_pic_set_irq,
 216             TP_PROTO(__u8 chip, __u8 pin, __u8 elcr, __u8 imr, bool coalesced),
 217             TP_ARGS(chip, pin, elcr, imr, coalesced),
 218
 219         TP_FIELDS(
 220                 ctf_integer(__u8, chip, chip)
 221                 ctf_integer(__u8, pin, pin)
 222                 ctf_integer(__u8, elcr, elcr)
 223                 ctf_integer(__u8, imr, imr)
 224                 ctf_integer(bool, coalesced, coalesced)
 225         )
 226 )
 227
 228 LTTNG_TRACEPOINT_EVENT_MAP(kvm_apic_ipi, kvm_x86_apic_ipi,
 229             TP_PROTO(__u32 icr_low, __u32 dest_id),
 230             TP_ARGS(icr_low, dest_id),
 231
 232         TP_FIELDS(
 233                 ctf_integer(__u32, icr_low, icr_low)
 234                 ctf_integer(__u32, dest_id, dest_id)
 235         )
 236 )
 237
 238 LTTNG_TRACEPOINT_EVENT_MAP(kvm_apic_accept_irq, kvm_x86_apic_accept_irq,
 239             TP_PROTO(__u32 apicid, __u16 dm, __u8 tm, __u8 vec, bool coalesced),
 240             TP_ARGS(apicid, dm, tm, vec, coalesced),
 241
 242         TP_FIELDS(
 243                 ctf_integer(__u32, apicid, apicid)
 244                 ctf_integer(__u16, dm, dm)
 245                 ctf_integer(__u8, tm, tm)
 246                 ctf_integer(__u8, vec, vec)
 247                 ctf_integer(bool, coalesced, coalesced)
 248         )
 249 )
 250
 251 LTTNG_TRACEPOINT_EVENT_MAP(kvm_eoi, kvm_x86_eoi,
 252             TP_PROTO(struct kvm_lapic *apic, int vector),
 253             TP_ARGS(apic, vector),
 254
 255         TP_FIELDS(
 256                 ctf_integer(__u32, apicid, apic->vcpu->vcpu_id)
 257                 ctf_integer(int, vector, vector)
 258         )
 259 )
 260
 261 LTTNG_TRACEPOINT_EVENT_MAP(kvm_pv_eoi, kvm_x86_pv_eoi,
 262             TP_PROTO(struct kvm_lapic *apic, int vector),
 263             TP_ARGS(apic, vector),
 264
 265         TP_FIELDS(
 266                 ctf_integer(__u32, apicid, apic->vcpu->vcpu_id)
 267                 ctf_integer(int, vector, vector)
 268         )
 269 )
 270
 271 /*
 272  * Tracepoint for nested VMRUN
 273  */
 274 LTTNG_TRACEPOINT_EVENT_MAP(kvm_nested_vmrun, kvm_x86_nested_vmrun,
 275             TP_PROTO(__u64 rip, __u64 vmcb, __u64 nested_rip, __u32 int_ctl,
 276                      __u32 event_inj, bool npt),
 277             TP_ARGS(rip, vmcb, nested_rip, int_ctl, event_inj, npt),
 278
 279         TP_FIELDS(
 280                 ctf_integer(__u64, rip, rip)
 281                 ctf_integer(__u64, vmcb, vmcb)
 282                 ctf_integer(__u64, nested_rip, nested_rip)
 283                 ctf_integer(__u32, int_ctl, int_ctl)
 284                 ctf_integer(__u32, event_inj, event_inj)
 285                 ctf_integer(bool, npt, npt)
 286         )
 287 )
 288
 289 LTTNG_TRACEPOINT_EVENT_MAP(kvm_nested_intercepts, kvm_x86_nested_intercepts,
 290             TP_PROTO(__u16 cr_read, __u16 cr_write, __u32 exceptions, __u64 intercept),
 291             TP_ARGS(cr_read, cr_write, exceptions, intercept),
 292
 293         TP_FIELDS(
 294                 ctf_integer(__u16, cr_read, cr_read)
 295                 ctf_integer(__u16, cr_write, cr_write)
 296                 ctf_integer(__u32, exceptions, exceptions)
 297                 ctf_integer(__u64, intercept, intercept)
 298         )
 299 )
 300 /*
 301  * Tracepoint for #VMEXIT while nested
 302  */
 303 LTTNG_TRACEPOINT_EVENT_MAP(kvm_nested_vmexit, kvm_x86_nested_vmexit,
 304             TP_PROTO(__u64 rip, __u32 exit_code,
 305                      __u64 exit_info1, __u64 exit_info2,
 306                      __u32 exit_int_info, __u32 exit_int_info_err, __u32 isa),
 307             TP_ARGS(rip, exit_code, exit_info1, exit_info2,
 308                     exit_int_info, exit_int_info_err, isa),
 309
 310         TP_FIELDS(
 311                 ctf_integer(__u64, rip, rip)
 312                 ctf_integer(__u32, exit_code, exit_code)
 313                 ctf_integer(__u64, exit_info1, exit_info1)
 314                 ctf_integer(__u64, exit_info2, exit_info2)
 315                 ctf_integer(__u32, exit_int_info, exit_int_info)
 316                 ctf_integer(__u32, exit_int_info_err, exit_int_info_err)
 317                 ctf_integer(__u32, isa, isa)
 318         )
 319 )
 320
 321 /*
 322  * Tracepoint for #VMEXIT reinjected to the guest
 323  */
 324 LTTNG_TRACEPOINT_EVENT_MAP(kvm_nested_vmexit_inject, kvm_x86_nested_vmexit_inject,
 325             TP_PROTO(__u32 exit_code,
 326                      __u64 exit_info1, __u64 exit_info2,
 327                      __u32 exit_int_info, __u32 exit_int_info_err, __u32 isa),
 328             TP_ARGS(exit_code, exit_info1, exit_info2,
 329                     exit_int_info, exit_int_info_err, isa),
 330
 331         TP_FIELDS(
 332                 ctf_integer(__u32, exit_code, exit_code)
 333                 ctf_integer(__u64, exit_info1, exit_info1)
 334                 ctf_integer(__u64, exit_info2, exit_info2)
 335                 ctf_integer(__u32, exit_int_info, exit_int_info)
 336                 ctf_integer(__u32, exit_int_info_err, exit_int_info_err)
 337                 ctf_integer(__u32, isa, isa)
 338         )
 339 )
 340
 341 /*
 342  * Tracepoint for nested #vmexit because of interrupt pending
 343  */
 344 LTTNG_TRACEPOINT_EVENT_MAP(kvm_nested_intr_vmexit, kvm_x86_nested_intr_vmexit,
 345             TP_PROTO(__u64 rip),
 346             TP_ARGS(rip),
 347
 348         TP_FIELDS(
 349                 ctf_integer(__u64, rip, rip)
 350         )
 351 )
 352
 353 /*
 354  * Tracepoint for nested #vmexit because of interrupt pending
 355  */
 356 LTTNG_TRACEPOINT_EVENT_MAP(kvm_invlpga, kvm_x86_invlpga,
 357             TP_PROTO(__u64 rip, int asid, u64 address),
 358             TP_ARGS(rip, asid, address),
 359
 360         TP_FIELDS(
 361                 ctf_integer(__u64, rip, rip)
 362                 ctf_integer(int, asid, asid)
 363                 ctf_integer_hex(__u64, address, address)
 364         )
 365 )
 366
 367 /*
 368  * Tracepoint for nested #vmexit because of interrupt pending
 369  */
 370 LTTNG_TRACEPOINT_EVENT_MAP(kvm_skinit, kvm_x86_skinit,
 371             TP_PROTO(__u64 rip, __u32 slb),
 372             TP_ARGS(rip, slb),
 373
 374         TP_FIELDS(
 375                 ctf_integer(__u64, rip, rip)
 376                 ctf_integer(__u32, slb, slb)
 377         )
 378 )
 379
 380 #define KVM_EMUL_INSN_F_CR0_PE (1 << 0)
 381 #define KVM_EMUL_INSN_F_EFL_VM (1 << 1)
 382 #define KVM_EMUL_INSN_F_CS_D   (1 << 2)
 383 #define KVM_EMUL_INSN_F_CS_L   (1 << 3)
 384
 385 #define kvm_trace_symbol_emul_flags                       \
 386         { 0,                        "real" },             \
 387         { KVM_EMUL_INSN_F_CR0_PE                          \
 388           | KVM_EMUL_INSN_F_EFL_VM, "vm16" },             \
 389         { KVM_EMUL_INSN_F_CR0_PE,   "prot16" },           \
 390         { KVM_EMUL_INSN_F_CR0_PE                          \
 391           | KVM_EMUL_INSN_F_CS_D,   "prot32" },           \
 392         { KVM_EMUL_INSN_F_CR0_PE                          \
 393           | KVM_EMUL_INSN_F_CS_L,   "prot64" }
 394
 395 #define kei_decode_mode(mode) ({                        \
 396         u8 flags = 0xff;                                \
 397         switch (mode) {                                 \
 398         case X86EMUL_MODE_REAL:                         \
 399                 flags = 0;                              \
 400                 break;                                  \
 401         case X86EMUL_MODE_VM86:                         \
 402                 flags = KVM_EMUL_INSN_F_EFL_VM;         \
 403                 break;                                  \
 404         case X86EMUL_MODE_PROT16:                       \
 405                 flags = KVM_EMUL_INSN_F_CR0_PE;         \
 406                 break;                                  \
 407         case X86EMUL_MODE_PROT32:                       \
 408                 flags = KVM_EMUL_INSN_F_CR0_PE          \
 409                         | KVM_EMUL_INSN_F_CS_D;         \
 410                 break;                                  \
 411         case X86EMUL_MODE_PROT64:                       \
 412                 flags = KVM_EMUL_INSN_F_CR0_PE          \
 413                         | KVM_EMUL_INSN_F_CS_L;         \
 414                 break;                                  \
 415         }                                               \
 416         flags;                                          \
 417         })
 418
 419 LTTNG_TRACEPOINT_EVENT_MAP(kvm_emulate_insn, kvm_x86_emulate_insn,
 420         TP_PROTO(struct kvm_vcpu *vcpu, __u8 failed),
 421         TP_ARGS(vcpu, failed),
 422
 423         TP_FIELDS(
 424                 ctf_integer(__u64, rip, vcpu->arch.emulate_ctxt->_eip -
 425                                 (vcpu->arch.emulate_ctxt->fetch.ptr -
 426                                         vcpu->arch.emulate_ctxt->fetch.data))
 427                 ctf_integer(__u32, csbase, kvm_x86_ops.get_segment_base(vcpu, VCPU_SREG_CS))
 428                 ctf_integer(__u8, len, vcpu->arch.emulate_ctxt->fetch.ptr -
 429                                 vcpu->arch.emulate_ctxt->fetch.data)
 430                 ctf_array(__u8, insn, vcpu->arch.emulate_ctxt->fetch.data, 15)
 431                 ctf_integer(__u8, flags, kei_decode_mode(vcpu->arch.emulate_ctxt->mode))
 432                 ctf_integer(__u8, failed, failed)
 433         )
 434 )
 435
 436 #define trace_kvm_emulate_insn_start(vcpu) trace_kvm_emulate_insn(vcpu, 0)
 437 #define trace_kvm_emulate_insn_failed(vcpu) trace_kvm_emulate_insn(vcpu, 1)
 438
 439 LTTNG_TRACEPOINT_EVENT_MAP(
 440         vcpu_match_mmio, kvm_x86_vcpu_match_mmio,
 441         TP_PROTO(gva_t gva, gpa_t gpa, bool write, bool gpa_match),
 442         TP_ARGS(gva, gpa, write, gpa_match),
 443
 444         TP_FIELDS(
 445                 ctf_integer(gva_t, gva, gva)
 446                 ctf_integer(gpa_t, gpa, gpa)
 447                 ctf_integer(bool, write, write)
 448                 ctf_integer(bool, gpa_match, gpa_match)
 449         )
 450 )
 451
 452 LTTNG_TRACEPOINT_EVENT_MAP(kvm_write_tsc_offset, kvm_x86_write_tsc_offset,
 453         TP_PROTO(unsigned int vcpu_id, __u64 previous_tsc_offset,
 454                  __u64 next_tsc_offset),
 455         TP_ARGS(vcpu_id, previous_tsc_offset, next_tsc_offset),
 456
 457         TP_FIELDS(
 458                 ctf_integer(unsigned int, vcpu_id, vcpu_id)
 459                 ctf_integer(__u64, previous_tsc_offset, previous_tsc_offset)
 460                 ctf_integer(__u64, next_tsc_offset, next_tsc_offset)
 461         )
 462 )
 463
 464 #ifdef CONFIG_X86_64
 465
 466 LTTNG_TRACEPOINT_EVENT_MAP(kvm_update_master_clock, kvm_x86_update_master_clock,
 467         TP_PROTO(bool use_master_clock, unsigned int host_clock, bool offset_matched),
 468         TP_ARGS(use_master_clock, host_clock, offset_matched),
 469
 470         TP_FIELDS(
 471                 ctf_integer(bool, use_master_clock, use_master_clock)
 472                 ctf_integer(unsigned int, host_clock, host_clock)
 473                 ctf_integer(bool, offset_matched, offset_matched)
 474         )
 475 )
 476
 477 LTTNG_TRACEPOINT_EVENT_MAP(kvm_track_tsc, kvm_x86_track_tsc,
 478         TP_PROTO(unsigned int vcpu_id, unsigned int nr_matched,
 479                  unsigned int online_vcpus, bool use_master_clock,
 480                  unsigned int host_clock),
 481         TP_ARGS(vcpu_id, nr_matched, online_vcpus, use_master_clock,
 482                 host_clock),
 483
 484         TP_FIELDS(
 485                 ctf_integer(unsigned int, vcpu_id, vcpu_id)
 486                 ctf_integer(unsigned int, nr_vcpus_matched_tsc, nr_matched)
 487                 ctf_integer(unsigned int, online_vcpus, online_vcpus)
 488                 ctf_integer(bool, use_master_clock, use_master_clock)
 489                 ctf_integer(unsigned int, host_clock, host_clock)
 490         )
 491 )
 492
 493 #endif /* CONFIG_X86_64 */
 494
 495 #endif /* LTTNG_TRACE_KVM_H */
 496
 497 #undef TRACE_INCLUDE_PATH
 498 #define TRACE_INCLUDE_PATH instrumentation/events/lttng-module/arch/x86/kvm
 499 #undef TRACE_INCLUDE_FILE
 500 #define TRACE_INCLUDE_FILE trace
 501
 502 /* This part must be outside protection */
 503 #include <probes/define_trace.h>