arch/x86/kvm/vmx/vmx.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __KVM_X86_VMX_H
   3 #define __KVM_X86_VMX_H
   4
   5 #include <linux/kvm_host.h>
   6
   7 #include <asm/kvm.h>
   8 #include <asm/intel_pt.h>
   9 #include <asm/perf_event.h>
  10
  11 #include "capabilities.h"
  12 #include "../kvm_cache_regs.h"
  13 #include "posted_intr.h"
  14 #include "vmcs.h"
  15 #include "vmx_ops.h"
  16 #include "../cpuid.h"
  17 #include "run_flags.h"
  18
  19 #define MSR_TYPE_R      1
  20 #define MSR_TYPE_W      2
  21 #define MSR_TYPE_RW     3
  22
  23 #define X2APIC_MSR(r) (APIC_BASE_MSR + ((r) >> 4))
  24
  25 #ifdef CONFIG_X86_64
  26 #define MAX_NR_USER_RETURN_MSRS 7
  27 #else
  28 #define MAX_NR_USER_RETURN_MSRS 4
  29 #endif
  30
  31 #define MAX_NR_LOADSTORE_MSRS   8
  32
  33 struct vmx_msrs {
  34         unsigned int            nr;
  35         struct vmx_msr_entry    val[MAX_NR_LOADSTORE_MSRS];
  36 };
  37
  38 struct vmx_uret_msr {
  39         bool load_into_hardware;
  40         u64 data;
  41         u64 mask;
  42 };
  43
  44 enum segment_cache_field {
  45         SEG_FIELD_SEL = 0,
  46         SEG_FIELD_BASE = 1,
  47         SEG_FIELD_LIMIT = 2,
  48         SEG_FIELD_AR = 3,
  49
  50         SEG_FIELD_NR = 4
  51 };
  52
  53 #define RTIT_ADDR_RANGE         4
  54
  55 struct pt_ctx {
  56         u64 ctl;
  57         u64 status;
  58         u64 output_base;
  59         u64 output_mask;
  60         u64 cr3_match;
  61         u64 addr_a[RTIT_ADDR_RANGE];
  62         u64 addr_b[RTIT_ADDR_RANGE];
  63 };
  64
  65 struct pt_desc {
  66         u64 ctl_bitmask;
  67         u32 num_address_ranges;
  68         u32 caps[PT_CPUID_REGS_NUM * PT_CPUID_LEAVES];
  69         struct pt_ctx host;
  70         struct pt_ctx guest;
  71 };
  72
  73 union vmx_exit_reason {
  74         struct {
  75                 u32     basic                   : 16;
  76                 u32     reserved16              : 1;
  77                 u32     reserved17              : 1;
  78                 u32     reserved18              : 1;
  79                 u32     reserved19              : 1;
  80                 u32     reserved20              : 1;
  81                 u32     reserved21              : 1;
  82                 u32     reserved22              : 1;
  83                 u32     reserved23              : 1;
  84                 u32     reserved24              : 1;
  85                 u32     reserved25              : 1;
  86                 u32     bus_lock_detected       : 1;
  87                 u32     enclave_mode            : 1;
  88                 u32     smi_pending_mtf         : 1;
  89                 u32     smi_from_vmx_root       : 1;
  90                 u32     reserved30              : 1;
  91                 u32     failed_vmentry          : 1;
  92         };
  93         u32 full;
  94 };
  95
  96 struct lbr_desc {
  97         /* Basic info about guest LBR records. */
  98         struct x86_pmu_lbr records;
  99
 100         /*
 101          * Emulate LBR feature via passthrough LBR registers when the
 102          * per-vcpu guest LBR event is scheduled on the current pcpu.
 103          *
 104          * The records may be inaccurate if the host reclaims the LBR.
 105          */
 106         struct perf_event *event;
 107
 108         /* True if LBRs are marked as not intercepted in the MSR bitmap */
 109         bool msr_passthrough;
 110 };
 111
 112 /*
 113  * The nested_vmx structure is part of vcpu_vmx, and holds information we need
 114  * for correct emulation of VMX (i.e., nested VMX) on this vcpu.
 115  */
 116 struct nested_vmx {
 117         /* Has the level1 guest done vmxon? */
 118         bool vmxon;
 119         gpa_t vmxon_ptr;
 120         bool pml_full;
 121
 122         /* The guest-physical address of the current VMCS L1 keeps for L2 */
 123         gpa_t current_vmptr;
 124         /*
 125          * Cache of the guest's VMCS, existing outside of guest memory.
 126          * Loaded from guest memory during VMPTRLD. Flushed to guest
 127          * memory during VMCLEAR and VMPTRLD.
 128          */
 129         struct vmcs12 *cached_vmcs12;
 130         /*
 131          * Cache of the guest's shadow VMCS, existing outside of guest
 132          * memory. Loaded from guest memory during VM entry. Flushed
 133          * to guest memory during VM exit.
 134          */
 135         struct vmcs12 *cached_shadow_vmcs12;
 136
 137         /*
 138          * GPA to HVA cache for accessing vmcs12->vmcs_link_pointer
 139          */
 140         struct gfn_to_hva_cache shadow_vmcs12_cache;
 141
 142         /*
 143          * GPA to HVA cache for VMCS12
 144          */
 145         struct gfn_to_hva_cache vmcs12_cache;
 146
 147         /*
 148          * Indicates if the shadow vmcs or enlightened vmcs must be updated
 149          * with the data held by struct vmcs12.
 150          */
 151         bool need_vmcs12_to_shadow_sync;
 152         bool dirty_vmcs12;
 153
 154         /*
 155          * Indicates whether MSR bitmap for L2 needs to be rebuilt due to
 156          * changes in MSR bitmap for L1 or switching to a different L2. Note,
 157          * this flag can only be used reliably in conjunction with a paravirt L1
 158          * which informs L0 whether any changes to MSR bitmap for L2 were done
 159          * on its side.
 160          */
 161         bool force_msr_bitmap_recalc;
 162
 163         /*
 164          * Indicates lazily loaded guest state has not yet been decached from
 165          * vmcs02.
 166          */
 167         bool need_sync_vmcs02_to_vmcs12_rare;
 168
 169         /*
 170          * vmcs02 has been initialized, i.e. state that is constant for
 171          * vmcs02 has been written to the backing VMCS.  Initialization
 172          * is delayed until L1 actually attempts to run a nested VM.
 173          */
 174         bool vmcs02_initialized;
 175
 176         bool change_vmcs01_virtual_apic_mode;
 177         bool reload_vmcs01_apic_access_page;
 178         bool update_vmcs01_cpu_dirty_logging;
 179         bool update_vmcs01_apicv_status;
 180
 181         /*
 182          * Enlightened VMCS has been enabled. It does not mean that L1 has to
 183          * use it. However, VMX features available to L1 will be limited based
 184          * on what the enlightened VMCS supports.
 185          */
 186         bool enlightened_vmcs_enabled;
 187
 188         /* L2 must run next, and mustn't decide to exit to L1. */
 189         bool nested_run_pending;
 190
 191         /* Pending MTF VM-exit into L1.  */
 192         bool mtf_pending;
 193
 194         struct loaded_vmcs vmcs02;
 195
 196         /*
 197          * Guest pages referred to in the vmcs02 with host-physical
 198          * pointers, so we must keep them pinned while L2 runs.
 199          */
 200         struct kvm_host_map apic_access_page_map;
 201         struct kvm_host_map virtual_apic_map;
 202         struct kvm_host_map pi_desc_map;
 203
 204         struct kvm_host_map msr_bitmap_map;
 205
 206         struct pi_desc *pi_desc;
 207         bool pi_pending;
 208         u16 posted_intr_nv;
 209
 210         struct hrtimer preemption_timer;
 211         u64 preemption_timer_deadline;
 212         bool has_preemption_timer_deadline;
 213         bool preemption_timer_expired;
 214
 215         /*
 216          * Used to snapshot MSRs that are conditionally loaded on VM-Enter in
 217          * order to propagate the guest's pre-VM-Enter value into vmcs02.  For
 218          * emulation of VMLAUNCH/VMRESUME, the snapshot will be of L1's value.
 219          * For KVM_SET_NESTED_STATE, the snapshot is of L2's value, _if_
 220          * userspace restores MSRs before nested state.  If userspace restores
 221          * MSRs after nested state, the snapshot holds garbage, but KVM can't
 222          * detect that, and the garbage value in vmcs02 will be overwritten by
 223          * MSR restoration in any case.
 224          */
 225         u64 pre_vmenter_debugctl;
 226         u64 pre_vmenter_bndcfgs;
 227
 228         /* to migrate it to L1 if L2 writes to L1's CR8 directly */
 229         int l1_tpr_threshold;
 230
 231         u16 vpid02;
 232         u16 last_vpid;
 233
 234         struct nested_vmx_msrs msrs;
 235
 236         /* SMM related state */
 237         struct {
 238                 /* in VMX operation on SMM entry? */
 239                 bool vmxon;
 240                 /* in guest mode on SMM entry? */
 241                 bool guest_mode;
 242         } smm;
 243
 244         gpa_t hv_evmcs_vmptr;
 245         struct kvm_host_map hv_evmcs_map;
 246         struct hv_enlightened_vmcs *hv_evmcs;
 247 };
 248
 249 struct vcpu_vmx {
 250         struct kvm_vcpu       vcpu;
 251         u8                    fail;
 252         u8                    x2apic_msr_bitmap_mode;
 253
 254         /*
 255          * If true, host state has been stored in vmx->loaded_vmcs for
 256          * the CPU registers that only need to be switched when transitioning
 257          * to/from the kernel, and the registers have been loaded with guest
 258          * values.  If false, host state is loaded in the CPU registers
 259          * and vmx->loaded_vmcs->host_state is invalid.
 260          */
 261         bool                  guest_state_loaded;
 262
 263         unsigned long         exit_qualification;
 264         u32                   exit_intr_info;
 265         u32                   idt_vectoring_info;
 266         ulong                 rflags;
 267
 268         /*
 269          * User return MSRs are always emulated when enabled in the guest, but
 270          * only loaded into hardware when necessary, e.g. SYSCALL #UDs outside
 271          * of 64-bit mode or if EFER.SCE=1, thus the SYSCALL MSRs don't need to
 272          * be loaded into hardware if those conditions aren't met.
 273          */
 274         struct vmx_uret_msr   guest_uret_msrs[MAX_NR_USER_RETURN_MSRS];
 275         bool                  guest_uret_msrs_loaded;
 276 #ifdef CONFIG_X86_64
 277         u64                   msr_host_kernel_gs_base;
 278         u64                   msr_guest_kernel_gs_base;
 279 #endif
 280
 281         u64                   spec_ctrl;
 282         u32                   msr_ia32_umwait_control;
 283
 284         /*
 285          * loaded_vmcs points to the VMCS currently used in this vcpu. For a
 286          * non-nested (L1) guest, it always points to vmcs01. For a nested
 287          * guest (L2), it points to a different VMCS.
 288          */
 289         struct loaded_vmcs    vmcs01;
 290         struct loaded_vmcs   *loaded_vmcs;
 291
 292         struct msr_autoload {
 293                 struct vmx_msrs guest;
 294                 struct vmx_msrs host;
 295         } msr_autoload;
 296
 297         struct msr_autostore {
 298                 struct vmx_msrs guest;
 299         } msr_autostore;
 300
 301         struct {
 302                 int vm86_active;
 303                 ulong save_rflags;
 304                 struct kvm_segment segs[8];
 305         } rmode;
 306         struct {
 307                 u32 bitmask; /* 4 bits per segment (1 bit per field) */
 308                 struct kvm_save_segment {
 309                         u16 selector;
 310                         unsigned long base;
 311                         u32 limit;
 312                         u32 ar;
 313                 } seg[8];
 314         } segment_cache;
 315         int vpid;
 316         bool emulation_required;
 317
 318         union vmx_exit_reason exit_reason;
 319
 320         /* Posted interrupt descriptor */
 321         struct pi_desc pi_desc;
 322
 323         /* Used if this vCPU is waiting for PI notification wakeup. */
 324         struct list_head pi_wakeup_list;
 325
 326         /* Support for a guest hypervisor (nested VMX) */
 327         struct nested_vmx nested;
 328
 329         /* Dynamic PLE window. */
 330         unsigned int ple_window;
 331         bool ple_window_dirty;
 332
 333         bool req_immediate_exit;
 334
 335         /* Support for PML */
 336 #define PML_ENTITY_NUM          512
 337         struct page *pml_pg;
 338
 339         /* apic deadline value in host tsc */
 340         u64 hv_deadline_tsc;
 341
 342         unsigned long host_debugctlmsr;
 343
 344         /*
 345          * Only bits masked by msr_ia32_feature_control_valid_bits can be set in
 346          * msr_ia32_feature_control. FEAT_CTL_LOCKED is always included
 347          * in msr_ia32_feature_control_valid_bits.
 348          */
 349         u64 msr_ia32_feature_control;
 350         u64 msr_ia32_feature_control_valid_bits;
 351         /* SGX Launch Control public key hash */
 352         u64 msr_ia32_sgxlepubkeyhash[4];
 353         u64 msr_ia32_mcu_opt_ctrl;
 354         bool disable_fb_clear;
 355
 356         struct pt_desc pt_desc;
 357         struct lbr_desc lbr_desc;
 358
 359         /* Save desired MSR intercept (read: pass-through) state */
 360 #define MAX_POSSIBLE_PASSTHROUGH_MSRS   16
 361         struct {
 362                 DECLARE_BITMAP(read, MAX_POSSIBLE_PASSTHROUGH_MSRS);
 363                 DECLARE_BITMAP(write, MAX_POSSIBLE_PASSTHROUGH_MSRS);
 364         } shadow_msr_intercept;
 365 };
 366
 367 struct kvm_vmx {
 368         struct kvm kvm;
 369
 370         unsigned int tss_addr;
 371         bool ept_identity_pagetable_done;
 372         gpa_t ept_identity_map_addr;
 373         /* Posted Interrupt Descriptor (PID) table for IPI virtualization */
 374         u64 *pid_table;
 375 };
 376
 377 void vmx_vcpu_load_vmcs(struct kvm_vcpu *vcpu, int cpu,
 378                         struct loaded_vmcs *buddy);
 379 int allocate_vpid(void);
 380 void free_vpid(int vpid);
 381 void vmx_set_constant_host_state(struct vcpu_vmx *vmx);
 382 void vmx_prepare_switch_to_guest(struct kvm_vcpu *vcpu);
 383 void vmx_set_host_fs_gs(struct vmcs_host_state *host, u16 fs_sel, u16 gs_sel,
 384                         unsigned long fs_base, unsigned long gs_base);
 385 int vmx_get_cpl(struct kvm_vcpu *vcpu);
 386 bool vmx_emulation_required(struct kvm_vcpu *vcpu);
 387 unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu);
 388 void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
 389 u32 vmx_get_interrupt_shadow(struct kvm_vcpu *vcpu);
 390 void vmx_set_interrupt_shadow(struct kvm_vcpu *vcpu, int mask);
 391 int vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer);
 392 void vmx_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
 393 void vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
 394 void set_cr4_guest_host_mask(struct vcpu_vmx *vmx);
 395 void ept_save_pdptrs(struct kvm_vcpu *vcpu);
 396 void vmx_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
 397 void __vmx_set_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
 398 u64 construct_eptp(struct kvm_vcpu *vcpu, hpa_t root_hpa, int root_level);
 399
 400 bool vmx_guest_inject_ac(struct kvm_vcpu *vcpu);
 401 void vmx_update_exception_bitmap(struct kvm_vcpu *vcpu);
 402 bool vmx_nmi_blocked(struct kvm_vcpu *vcpu);
 403 bool vmx_interrupt_blocked(struct kvm_vcpu *vcpu);
 404 bool vmx_get_nmi_mask(struct kvm_vcpu *vcpu);
 405 void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked);
 406 void vmx_set_virtual_apic_mode(struct kvm_vcpu *vcpu);
 407 struct vmx_uret_msr *vmx_find_uret_msr(struct vcpu_vmx *vmx, u32 msr);
 408 void pt_update_intercept_for_msr(struct kvm_vcpu *vcpu);
 409 void vmx_update_host_rsp(struct vcpu_vmx *vmx, unsigned long host_rsp);
 410 void vmx_spec_ctrl_restore_host(struct vcpu_vmx *vmx, unsigned int flags);
 411 unsigned int __vmx_vcpu_run_flags(struct vcpu_vmx *vmx);
 412 bool __vmx_vcpu_run(struct vcpu_vmx *vmx, unsigned long *regs,
 413                     unsigned int flags);
 414 int vmx_find_loadstore_msr_slot(struct vmx_msrs *m, u32 msr);
 415 void vmx_ept_load_pdptrs(struct kvm_vcpu *vcpu);
 416
 417 void vmx_disable_intercept_for_msr(struct kvm_vcpu *vcpu, u32 msr, int type);
 418 void vmx_enable_intercept_for_msr(struct kvm_vcpu *vcpu, u32 msr, int type);
 419
 420 u64 vmx_get_l2_tsc_offset(struct kvm_vcpu *vcpu);
 421 u64 vmx_get_l2_tsc_multiplier(struct kvm_vcpu *vcpu);
 422
 423 static inline void vmx_set_intercept_for_msr(struct kvm_vcpu *vcpu, u32 msr,
 424                                              int type, bool value)
 425 {
 426         if (value)
 427                 vmx_enable_intercept_for_msr(vcpu, msr, type);
 428         else
 429                 vmx_disable_intercept_for_msr(vcpu, msr, type);
 430 }
 431
 432 void vmx_update_cpu_dirty_logging(struct kvm_vcpu *vcpu);
 433
 434 /*
 435  * Note, early Intel manuals have the write-low and read-high bitmap offsets
 436  * the wrong way round.  The bitmaps control MSRs 0x00000000-0x00001fff and
 437  * 0xc0000000-0xc0001fff.  The former (low) uses bytes 0-0x3ff for reads and
 438  * 0x800-0xbff for writes.  The latter (high) uses 0x400-0x7ff for reads and
 439  * 0xc00-0xfff for writes.  MSRs not covered by either of the ranges always
 440  * VM-Exit.
 441  */
 442 #define __BUILD_VMX_MSR_BITMAP_HELPER(rtype, action, bitop, access, base)      \
 443 static inline rtype vmx_##action##_msr_bitmap_##access(unsigned long *bitmap,  \
 444                                                        u32 msr)                \
 445 {                                                                              \
 446         int f = sizeof(unsigned long);                                         \
 447                                                                                \
 448         if (msr <= 0x1fff)                                                     \
 449                 return bitop##_bit(msr, bitmap + base / f);                    \
 450         else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff))                   \
 451                 return bitop##_bit(msr & 0x1fff, bitmap + (base + 0x400) / f); \
 452         return (rtype)true;                                                    \
 453 }
 454 #define BUILD_VMX_MSR_BITMAP_HELPERS(ret_type, action, bitop)                  \
 455         __BUILD_VMX_MSR_BITMAP_HELPER(ret_type, action, bitop, read,  0x0)     \
 456         __BUILD_VMX_MSR_BITMAP_HELPER(ret_type, action, bitop, write, 0x800)
 457
 458 BUILD_VMX_MSR_BITMAP_HELPERS(bool, test, test)
 459 BUILD_VMX_MSR_BITMAP_HELPERS(void, clear, __clear)
 460 BUILD_VMX_MSR_BITMAP_HELPERS(void, set, __set)
 461
 462 static inline u8 vmx_get_rvi(void)
 463 {
 464         return vmcs_read16(GUEST_INTR_STATUS) & 0xff;
 465 }
 466
 467 #define __KVM_REQUIRED_VMX_VM_ENTRY_CONTROLS                            \
 468         (VM_ENTRY_LOAD_DEBUG_CONTROLS)
 469 #ifdef CONFIG_X86_64
 470         #define KVM_REQUIRED_VMX_VM_ENTRY_CONTROLS                      \
 471                 (__KVM_REQUIRED_VMX_VM_ENTRY_CONTROLS |                 \
 472                  VM_ENTRY_IA32E_MODE)
 473 #else
 474         #define KVM_REQUIRED_VMX_VM_ENTRY_CONTROLS                      \
 475                 __KVM_REQUIRED_VMX_VM_ENTRY_CONTROLS
 476 #endif
 477 #define KVM_OPTIONAL_VMX_VM_ENTRY_CONTROLS                              \
 478         (VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL |                          \
 479          VM_ENTRY_LOAD_IA32_PAT |                                       \
 480          VM_ENTRY_LOAD_IA32_EFER |                                      \
 481          VM_ENTRY_LOAD_BNDCFGS |                                        \
 482          VM_ENTRY_PT_CONCEAL_PIP |                                      \
 483          VM_ENTRY_LOAD_IA32_RTIT_CTL)
 484
 485 #define __KVM_REQUIRED_VMX_VM_EXIT_CONTROLS                             \
 486         (VM_EXIT_SAVE_DEBUG_CONTROLS |                                  \
 487          VM_EXIT_ACK_INTR_ON_EXIT)
 488 #ifdef CONFIG_X86_64
 489         #define KVM_REQUIRED_VMX_VM_EXIT_CONTROLS                       \
 490                 (__KVM_REQUIRED_VMX_VM_EXIT_CONTROLS |                  \
 491                  VM_EXIT_HOST_ADDR_SPACE_SIZE)
 492 #else
 493         #define KVM_REQUIRED_VMX_VM_EXIT_CONTROLS                       \
 494                 __KVM_REQUIRED_VMX_VM_EXIT_CONTROLS
 495 #endif
 496 #define KVM_OPTIONAL_VMX_VM_EXIT_CONTROLS                               \
 497               (VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL |                     \
 498                VM_EXIT_SAVE_IA32_PAT |                                  \
 499                VM_EXIT_LOAD_IA32_PAT |                                  \
 500                VM_EXIT_SAVE_IA32_EFER |                                 \
 501                VM_EXIT_SAVE_VMX_PREEMPTION_TIMER |                      \
 502                VM_EXIT_LOAD_IA32_EFER |                                 \
 503                VM_EXIT_CLEAR_BNDCFGS |                                  \
 504                VM_EXIT_PT_CONCEAL_PIP |                                 \
 505                VM_EXIT_CLEAR_IA32_RTIT_CTL)
 506
 507 #define KVM_REQUIRED_VMX_PIN_BASED_VM_EXEC_CONTROL                      \
 508         (PIN_BASED_EXT_INTR_MASK |                                      \
 509          PIN_BASED_NMI_EXITING)
 510 #define KVM_OPTIONAL_VMX_PIN_BASED_VM_EXEC_CONTROL                      \
 511         (PIN_BASED_VIRTUAL_NMIS |                                       \
 512          PIN_BASED_POSTED_INTR |                                        \
 513          PIN_BASED_VMX_PREEMPTION_TIMER)
 514
 515 #define __KVM_REQUIRED_VMX_CPU_BASED_VM_EXEC_CONTROL                    \
 516         (CPU_BASED_HLT_EXITING |                                        \
 517          CPU_BASED_CR3_LOAD_EXITING |                                   \
 518          CPU_BASED_CR3_STORE_EXITING |                                  \
 519          CPU_BASED_UNCOND_IO_EXITING |                                  \
 520          CPU_BASED_MOV_DR_EXITING |                                     \
 521          CPU_BASED_USE_TSC_OFFSETTING |                                 \
 522          CPU_BASED_MWAIT_EXITING |                                      \
 523          CPU_BASED_MONITOR_EXITING |                                    \
 524          CPU_BASED_INVLPG_EXITING |                                     \
 525          CPU_BASED_RDPMC_EXITING |                                      \
 526          CPU_BASED_INTR_WINDOW_EXITING)
 527
 528 #ifdef CONFIG_X86_64
 529         #define KVM_REQUIRED_VMX_CPU_BASED_VM_EXEC_CONTROL              \
 530                 (__KVM_REQUIRED_VMX_CPU_BASED_VM_EXEC_CONTROL |         \
 531                  CPU_BASED_CR8_LOAD_EXITING |                           \
 532                  CPU_BASED_CR8_STORE_EXITING)
 533 #else
 534         #define KVM_REQUIRED_VMX_CPU_BASED_VM_EXEC_CONTROL              \
 535                 __KVM_REQUIRED_VMX_CPU_BASED_VM_EXEC_CONTROL
 536 #endif
 537
 538 #define KVM_OPTIONAL_VMX_CPU_BASED_VM_EXEC_CONTROL                      \
 539         (CPU_BASED_RDTSC_EXITING |                                      \
 540          CPU_BASED_TPR_SHADOW |                                         \
 541          CPU_BASED_USE_IO_BITMAPS |                                     \
 542          CPU_BASED_MONITOR_TRAP_FLAG |                                  \
 543          CPU_BASED_USE_MSR_BITMAPS |                                    \
 544          CPU_BASED_NMI_WINDOW_EXITING |                                 \
 545          CPU_BASED_PAUSE_EXITING |                                      \
 546          CPU_BASED_ACTIVATE_SECONDARY_CONTROLS |                        \
 547          CPU_BASED_ACTIVATE_TERTIARY_CONTROLS)
 548
 549 #define KVM_REQUIRED_VMX_SECONDARY_VM_EXEC_CONTROL 0
 550 #define KVM_OPTIONAL_VMX_SECONDARY_VM_EXEC_CONTROL                      \
 551         (SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |                      \
 552          SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE |                        \
 553          SECONDARY_EXEC_WBINVD_EXITING |                                \
 554          SECONDARY_EXEC_ENABLE_VPID |                                   \
 555          SECONDARY_EXEC_ENABLE_EPT |                                    \
 556          SECONDARY_EXEC_UNRESTRICTED_GUEST |                            \
 557          SECONDARY_EXEC_PAUSE_LOOP_EXITING |                            \
 558          SECONDARY_EXEC_DESC |                                          \
 559          SECONDARY_EXEC_ENABLE_RDTSCP |                                 \
 560          SECONDARY_EXEC_ENABLE_INVPCID |                                \
 561          SECONDARY_EXEC_APIC_REGISTER_VIRT |                            \
 562          SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY |                         \
 563          SECONDARY_EXEC_SHADOW_VMCS |                                   \
 564          SECONDARY_EXEC_ENABLE_XSAVES |                                 \
 565          SECONDARY_EXEC_RDSEED_EXITING |                                \
 566          SECONDARY_EXEC_RDRAND_EXITING |                                \
 567          SECONDARY_EXEC_ENABLE_PML |                                    \
 568          SECONDARY_EXEC_TSC_SCALING |                                   \
 569          SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE |                         \
 570          SECONDARY_EXEC_PT_USE_GPA |                                    \
 571          SECONDARY_EXEC_PT_CONCEAL_VMX |                                \
 572          SECONDARY_EXEC_ENABLE_VMFUNC |                                 \
 573          SECONDARY_EXEC_BUS_LOCK_DETECTION |                            \
 574          SECONDARY_EXEC_NOTIFY_VM_EXITING |                             \
 575          SECONDARY_EXEC_ENCLS_EXITING)
 576
 577 #define KVM_REQUIRED_VMX_TERTIARY_VM_EXEC_CONTROL 0
 578 #define KVM_OPTIONAL_VMX_TERTIARY_VM_EXEC_CONTROL                       \
 579         (TERTIARY_EXEC_IPI_VIRT)
 580
 581 #define BUILD_CONTROLS_SHADOW(lname, uname, bits)                                               \
 582 static inline void lname##_controls_set(struct vcpu_vmx *vmx, u##bits val)                      \
 583 {                                                                                               \
 584         if (vmx->loaded_vmcs->controls_shadow.lname != val) {                                   \
 585                 vmcs_write##bits(uname, val);                                                   \
 586                 vmx->loaded_vmcs->controls_shadow.lname = val;                                  \
 587         }                                                                                       \
 588 }                                                                                               \
 589 static inline u##bits __##lname##_controls_get(struct loaded_vmcs *vmcs)                        \
 590 {                                                                                               \
 591         return vmcs->controls_shadow.lname;                                                     \
 592 }                                                                                               \
 593 static inline u##bits lname##_controls_get(struct vcpu_vmx *vmx)                                \
 594 {                                                                                               \
 595         return __##lname##_controls_get(vmx->loaded_vmcs);                                      \
 596 }                                                                                               \
 597 static __always_inline void lname##_controls_setbit(struct vcpu_vmx *vmx, u##bits val)          \
 598 {                                                                                               \
 599         BUILD_BUG_ON(!(val & (KVM_REQUIRED_VMX_##uname | KVM_OPTIONAL_VMX_##uname)));           \
 600         lname##_controls_set(vmx, lname##_controls_get(vmx) | val);                             \
 601 }                                                                                               \
 602 static __always_inline void lname##_controls_clearbit(struct vcpu_vmx *vmx, u##bits val)        \
 603 {                                                                                               \
 604         BUILD_BUG_ON(!(val & (KVM_REQUIRED_VMX_##uname | KVM_OPTIONAL_VMX_##uname)));           \
 605         lname##_controls_set(vmx, lname##_controls_get(vmx) & ~val);                            \
 606 }
 607 BUILD_CONTROLS_SHADOW(vm_entry, VM_ENTRY_CONTROLS, 32)
 608 BUILD_CONTROLS_SHADOW(vm_exit, VM_EXIT_CONTROLS, 32)
 609 BUILD_CONTROLS_SHADOW(pin, PIN_BASED_VM_EXEC_CONTROL, 32)
 610 BUILD_CONTROLS_SHADOW(exec, CPU_BASED_VM_EXEC_CONTROL, 32)
 611 BUILD_CONTROLS_SHADOW(secondary_exec, SECONDARY_VM_EXEC_CONTROL, 32)
 612 BUILD_CONTROLS_SHADOW(tertiary_exec, TERTIARY_VM_EXEC_CONTROL, 64)
 613
 614 /*
 615  * VMX_REGS_LAZY_LOAD_SET - The set of registers that will be updated in the
 616  * cache on demand.  Other registers not listed here are synced to
 617  * the cache immediately after VM-Exit.
 618  */
 619 #define VMX_REGS_LAZY_LOAD_SET  ((1 << VCPU_REGS_RIP) |         \
 620                                 (1 << VCPU_REGS_RSP) |          \
 621                                 (1 << VCPU_EXREG_RFLAGS) |      \
 622                                 (1 << VCPU_EXREG_PDPTR) |       \
 623                                 (1 << VCPU_EXREG_SEGMENTS) |    \
 624                                 (1 << VCPU_EXREG_CR0) |         \
 625                                 (1 << VCPU_EXREG_CR3) |         \
 626                                 (1 << VCPU_EXREG_CR4) |         \
 627                                 (1 << VCPU_EXREG_EXIT_INFO_1) | \
 628                                 (1 << VCPU_EXREG_EXIT_INFO_2))
 629
 630 static inline unsigned long vmx_l1_guest_owned_cr0_bits(void)
 631 {
 632         unsigned long bits = KVM_POSSIBLE_CR0_GUEST_BITS;
 633
 634         /*
 635          * CR0.WP needs to be intercepted when KVM is shadowing legacy paging
 636          * in order to construct shadow PTEs with the correct protections.
 637          * Note!  CR0.WP technically can be passed through to the guest if
 638          * paging is disabled, but checking CR0.PG would generate a cyclical
 639          * dependency of sorts due to forcing the caller to ensure CR0 holds
 640          * the correct value prior to determining which CR0 bits can be owned
 641          * by L1.  Keep it simple and limit the optimization to EPT.
 642          */
 643         if (!enable_ept)
 644                 bits &= ~X86_CR0_WP;
 645         return bits;
 646 }
 647
 648 static __always_inline struct kvm_vmx *to_kvm_vmx(struct kvm *kvm)
 649 {
 650         return container_of(kvm, struct kvm_vmx, kvm);
 651 }
 652
 653 static __always_inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu)
 654 {
 655         return container_of(vcpu, struct vcpu_vmx, vcpu);
 656 }
 657
 658 static inline struct lbr_desc *vcpu_to_lbr_desc(struct kvm_vcpu *vcpu)
 659 {
 660         return &to_vmx(vcpu)->lbr_desc;
 661 }
 662
 663 static inline struct x86_pmu_lbr *vcpu_to_lbr_records(struct kvm_vcpu *vcpu)
 664 {
 665         return &vcpu_to_lbr_desc(vcpu)->records;
 666 }
 667
 668 static inline bool intel_pmu_lbr_is_enabled(struct kvm_vcpu *vcpu)
 669 {
 670         return !!vcpu_to_lbr_records(vcpu)->nr;
 671 }
 672
 673 void intel_pmu_cross_mapped_check(struct kvm_pmu *pmu);
 674 int intel_pmu_create_guest_lbr_event(struct kvm_vcpu *vcpu);
 675 void vmx_passthrough_lbr_msrs(struct kvm_vcpu *vcpu);
 676
 677 static __always_inline unsigned long vmx_get_exit_qual(struct kvm_vcpu *vcpu)
 678 {
 679         struct vcpu_vmx *vmx = to_vmx(vcpu);
 680
 681         if (!kvm_register_test_and_mark_available(vcpu, VCPU_EXREG_EXIT_INFO_1))
 682                 vmx->exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
 683
 684         return vmx->exit_qualification;
 685 }
 686
 687 static __always_inline u32 vmx_get_intr_info(struct kvm_vcpu *vcpu)
 688 {
 689         struct vcpu_vmx *vmx = to_vmx(vcpu);
 690
 691         if (!kvm_register_test_and_mark_available(vcpu, VCPU_EXREG_EXIT_INFO_2))
 692                 vmx->exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
 693
 694         return vmx->exit_intr_info;
 695 }
 696
 697 struct vmcs *alloc_vmcs_cpu(bool shadow, int cpu, gfp_t flags);
 698 void free_vmcs(struct vmcs *vmcs);
 699 int alloc_loaded_vmcs(struct loaded_vmcs *loaded_vmcs);
 700 void free_loaded_vmcs(struct loaded_vmcs *loaded_vmcs);
 701 void loaded_vmcs_clear(struct loaded_vmcs *loaded_vmcs);
 702
 703 static inline struct vmcs *alloc_vmcs(bool shadow)
 704 {
 705         return alloc_vmcs_cpu(shadow, raw_smp_processor_id(),
 706                               GFP_KERNEL_ACCOUNT);
 707 }
 708
 709 static inline bool vmx_has_waitpkg(struct vcpu_vmx *vmx)
 710 {
 711         return secondary_exec_controls_get(vmx) &
 712                 SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE;
 713 }
 714
 715 static inline bool vmx_need_pf_intercept(struct kvm_vcpu *vcpu)
 716 {
 717         if (!enable_ept)
 718                 return true;
 719
 720         return allow_smaller_maxphyaddr && cpuid_maxphyaddr(vcpu) < boot_cpu_data.x86_phys_bits;
 721 }
 722
 723 static inline bool is_unrestricted_guest(struct kvm_vcpu *vcpu)
 724 {
 725         return enable_unrestricted_guest && (!is_guest_mode(vcpu) ||
 726             (secondary_exec_controls_get(to_vmx(vcpu)) &
 727             SECONDARY_EXEC_UNRESTRICTED_GUEST));
 728 }
 729
 730 bool __vmx_guest_state_valid(struct kvm_vcpu *vcpu);
 731 static inline bool vmx_guest_state_valid(struct kvm_vcpu *vcpu)
 732 {
 733         return is_unrestricted_guest(vcpu) || __vmx_guest_state_valid(vcpu);
 734 }
 735
 736 void dump_vmcs(struct kvm_vcpu *vcpu);
 737
 738 static inline int vmx_get_instr_info_reg2(u32 vmx_instr_info)
 739 {
 740         return (vmx_instr_info >> 28) & 0xf;
 741 }
 742
 743 static inline bool vmx_can_use_ipiv(struct kvm_vcpu *vcpu)
 744 {
 745         return  lapic_in_kernel(vcpu) && enable_ipiv;
 746 }
 747
 748 static inline bool guest_cpuid_has_evmcs(struct kvm_vcpu *vcpu)
 749 {
 750         /*
 751          * eVMCS is exposed to the guest if Hyper-V is enabled in CPUID and
 752          * eVMCS has been explicitly enabled by userspace.
 753          */
 754         return vcpu->arch.hyperv_enabled &&
 755                to_vmx(vcpu)->nested.enlightened_vmcs_enabled;
 756 }
 757
 758 #endif /* __KVM_X86_VMX_H */