arch/x86/kvm/svm/svm.h

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Kernel-based Virtual Machine driver for Linux
   4  *
   5  * AMD SVM support
   6  *
   7  * Copyright (C) 2006 Qumranet, Inc.
   8  * Copyright 2010 Red Hat, Inc. and/or its affiliates.
   9  *
  10  * Authors:
  11  *   Yaniv Kamay  <yaniv@qumranet.com>
  12  *   Avi Kivity   <avi@qumranet.com>
  13  */
  14
  15 #ifndef __SVM_SVM_H
  16 #define __SVM_SVM_H
  17
  18 #include <linux/kvm_types.h>
  19 #include <linux/kvm_host.h>
  20 #include <linux/bits.h>
  21
  22 #include <asm/svm.h>
  23 #include <asm/sev-common.h>
  24
  25 #include "cpuid.h"
  26 #include "kvm_cache_regs.h"
  27
  28 #define __sme_page_pa(x) __sme_set(page_to_pfn(x) << PAGE_SHIFT)
  29
  30 #define IOPM_SIZE PAGE_SIZE * 3
  31 #define MSRPM_SIZE PAGE_SIZE * 2
  32
  33 #define MAX_DIRECT_ACCESS_MSRS  46
  34 #define MSRPM_OFFSETS   32
  35 extern u32 msrpm_offsets[MSRPM_OFFSETS] __read_mostly;
  36 extern bool npt_enabled;
  37 extern int nrips;
  38 extern int vgif;
  39 extern bool intercept_smi;
  40 extern bool x2avic_enabled;
  41 extern bool vnmi;
  42
  43 /*
  44  * Clean bits in VMCB.
  45  * VMCB_ALL_CLEAN_MASK might also need to
  46  * be updated if this enum is modified.
  47  */
  48 enum {
  49         VMCB_INTERCEPTS, /* Intercept vectors, TSC offset,
  50                             pause filter count */
  51         VMCB_PERM_MAP,   /* IOPM Base and MSRPM Base */
  52         VMCB_ASID,       /* ASID */
  53         VMCB_INTR,       /* int_ctl, int_vector */
  54         VMCB_NPT,        /* npt_en, nCR3, gPAT */
  55         VMCB_CR,         /* CR0, CR3, CR4, EFER */
  56         VMCB_DR,         /* DR6, DR7 */
  57         VMCB_DT,         /* GDT, IDT */
  58         VMCB_SEG,        /* CS, DS, SS, ES, CPL */
  59         VMCB_CR2,        /* CR2 only */
  60         VMCB_LBR,        /* DBGCTL, BR_FROM, BR_TO, LAST_EX_FROM, LAST_EX_TO */
  61         VMCB_AVIC,       /* AVIC APIC_BAR, AVIC APIC_BACKING_PAGE,
  62                           * AVIC PHYSICAL_TABLE pointer,
  63                           * AVIC LOGICAL_TABLE pointer
  64                           */
  65         VMCB_SW = 31,    /* Reserved for hypervisor/software use */
  66 };
  67
  68 #define VMCB_ALL_CLEAN_MASK (                                   \
  69         (1U << VMCB_INTERCEPTS) | (1U << VMCB_PERM_MAP) |       \
  70         (1U << VMCB_ASID) | (1U << VMCB_INTR) |                 \
  71         (1U << VMCB_NPT) | (1U << VMCB_CR) | (1U << VMCB_DR) |  \
  72         (1U << VMCB_DT) | (1U << VMCB_SEG) | (1U << VMCB_CR2) | \
  73         (1U << VMCB_LBR) | (1U << VMCB_AVIC) |                  \
  74         (1U << VMCB_SW))
  75
  76 /* TPR and CR2 are always written before VMRUN */
  77 #define VMCB_ALWAYS_DIRTY_MASK  ((1U << VMCB_INTR) | (1U << VMCB_CR2))
  78
  79 struct kvm_sev_info {
  80         bool active;            /* SEV enabled guest */
  81         bool es_active;         /* SEV-ES enabled guest */
  82         unsigned int asid;      /* ASID used for this guest */
  83         unsigned int handle;    /* SEV firmware handle */
  84         int fd;                 /* SEV device fd */
  85         unsigned long pages_locked; /* Number of pages locked */
  86         struct list_head regions_list;  /* List of registered regions */
  87         u64 ap_jump_table;      /* SEV-ES AP Jump Table address */
  88         struct kvm *enc_context_owner; /* Owner of copied encryption context */
  89         struct list_head mirror_vms; /* List of VMs mirroring */
  90         struct list_head mirror_entry; /* Use as a list entry of mirrors */
  91         struct misc_cg *misc_cg; /* For misc cgroup accounting */
  92         atomic_t migration_in_progress;
  93 };
  94
  95 struct kvm_svm {
  96         struct kvm kvm;
  97
  98         /* Struct members for AVIC */
  99         u32 avic_vm_id;
 100         struct page *avic_logical_id_table_page;
 101         struct page *avic_physical_id_table_page;
 102         struct hlist_node hnode;
 103
 104         struct kvm_sev_info sev_info;
 105 };
 106
 107 struct kvm_vcpu;
 108
 109 struct kvm_vmcb_info {
 110         struct vmcb *ptr;
 111         unsigned long pa;
 112         int cpu;
 113         uint64_t asid_generation;
 114 };
 115
 116 struct vmcb_save_area_cached {
 117         u64 efer;
 118         u64 cr4;
 119         u64 cr3;
 120         u64 cr0;
 121         u64 dr7;
 122         u64 dr6;
 123 };
 124
 125 struct vmcb_ctrl_area_cached {
 126         u32 intercepts[MAX_INTERCEPT];
 127         u16 pause_filter_thresh;
 128         u16 pause_filter_count;
 129         u64 iopm_base_pa;
 130         u64 msrpm_base_pa;
 131         u64 tsc_offset;
 132         u32 asid;
 133         u8 tlb_ctl;
 134         u32 int_ctl;
 135         u32 int_vector;
 136         u32 int_state;
 137         u32 exit_code;
 138         u32 exit_code_hi;
 139         u64 exit_info_1;
 140         u64 exit_info_2;
 141         u32 exit_int_info;
 142         u32 exit_int_info_err;
 143         u64 nested_ctl;
 144         u32 event_inj;
 145         u32 event_inj_err;
 146         u64 next_rip;
 147         u64 nested_cr3;
 148         u64 virt_ext;
 149         u32 clean;
 150         union {
 151                 struct hv_vmcb_enlightenments hv_enlightenments;
 152                 u8 reserved_sw[32];
 153         };
 154 };
 155
 156 struct svm_nested_state {
 157         struct kvm_vmcb_info vmcb02;
 158         u64 hsave_msr;
 159         u64 vm_cr_msr;
 160         u64 vmcb12_gpa;
 161         u64 last_vmcb12_gpa;
 162
 163         /* These are the merged vectors */
 164         u32 *msrpm;
 165
 166         /* A VMRUN has started but has not yet been performed, so
 167          * we cannot inject a nested vmexit yet.  */
 168         bool nested_run_pending;
 169
 170         /* cache for control fields of the guest */
 171         struct vmcb_ctrl_area_cached ctl;
 172
 173         /*
 174          * Note: this struct is not kept up-to-date while L2 runs; it is only
 175          * valid within nested_svm_vmrun.
 176          */
 177         struct vmcb_save_area_cached save;
 178
 179         bool initialized;
 180
 181         /*
 182          * Indicates whether MSR bitmap for L2 needs to be rebuilt due to
 183          * changes in MSR bitmap for L1 or switching to a different L2. Note,
 184          * this flag can only be used reliably in conjunction with a paravirt L1
 185          * which informs L0 whether any changes to MSR bitmap for L2 were done
 186          * on its side.
 187          */
 188         bool force_msr_bitmap_recalc;
 189 };
 190
 191 struct vcpu_sev_es_state {
 192         /* SEV-ES support */
 193         struct sev_es_save_area *vmsa;
 194         struct ghcb *ghcb;
 195         u8 valid_bitmap[16];
 196         struct kvm_host_map ghcb_map;
 197         bool received_first_sipi;
 198
 199         /* SEV-ES scratch area support */
 200         u64 sw_scratch;
 201         void *ghcb_sa;
 202         u32 ghcb_sa_len;
 203         bool ghcb_sa_sync;
 204         bool ghcb_sa_free;
 205 };
 206
 207 struct vcpu_svm {
 208         struct kvm_vcpu vcpu;
 209         /* vmcb always points at current_vmcb->ptr, it's purely a shorthand. */
 210         struct vmcb *vmcb;
 211         struct kvm_vmcb_info vmcb01;
 212         struct kvm_vmcb_info *current_vmcb;
 213         u32 asid;
 214         u32 sysenter_esp_hi;
 215         u32 sysenter_eip_hi;
 216         uint64_t tsc_aux;
 217
 218         u64 msr_decfg;
 219
 220         u64 next_rip;
 221
 222         u64 spec_ctrl;
 223
 224         u64 tsc_ratio_msr;
 225         /*
 226          * Contains guest-controlled bits of VIRT_SPEC_CTRL, which will be
 227          * translated into the appropriate L2_CFG bits on the host to
 228          * perform speculative control.
 229          */
 230         u64 virt_spec_ctrl;
 231
 232         u32 *msrpm;
 233
 234         ulong nmi_iret_rip;
 235
 236         struct svm_nested_state nested;
 237
 238         /* NMI mask value, used when vNMI is not enabled */
 239         bool nmi_masked;
 240
 241         /*
 242          * True when NMIs are still masked but guest IRET was just intercepted
 243          * and KVM is waiting for RIP to change, which will signal that the
 244          * intercepted IRET was retired and thus NMI can be unmasked.
 245          */
 246         bool awaiting_iret_completion;
 247
 248         /*
 249          * Set when KVM is awaiting IRET completion and needs to inject NMIs as
 250          * soon as the IRET completes (e.g. NMI is pending injection).  KVM
 251          * temporarily steals RFLAGS.TF to single-step the guest in this case
 252          * in order to regain control as soon as the NMI-blocking condition
 253          * goes away.
 254          */
 255         bool nmi_singlestep;
 256         u64 nmi_singlestep_guest_rflags;
 257
 258         bool nmi_l1_to_l2;
 259
 260         unsigned long soft_int_csbase;
 261         unsigned long soft_int_old_rip;
 262         unsigned long soft_int_next_rip;
 263         bool soft_int_injected;
 264
 265         u32 ldr_reg;
 266         u32 dfr_reg;
 267         struct page *avic_backing_page;
 268         u64 *avic_physical_id_cache;
 269
 270         /*
 271          * Per-vcpu list of struct amd_svm_iommu_ir:
 272          * This is used mainly to store interrupt remapping information used
 273          * when update the vcpu affinity. This avoids the need to scan for
 274          * IRTE and try to match ga_tag in the IOMMU driver.
 275          */
 276         struct list_head ir_list;
 277         spinlock_t ir_list_lock;
 278
 279         /* Save desired MSR intercept (read: pass-through) state */
 280         struct {
 281                 DECLARE_BITMAP(read, MAX_DIRECT_ACCESS_MSRS);
 282                 DECLARE_BITMAP(write, MAX_DIRECT_ACCESS_MSRS);
 283         } shadow_msr_intercept;
 284
 285         struct vcpu_sev_es_state sev_es;
 286
 287         bool guest_state_loaded;
 288
 289         bool x2avic_msrs_intercepted;
 290
 291         /* Guest GIF value, used when vGIF is not enabled */
 292         bool guest_gif;
 293 };
 294
 295 struct svm_cpu_data {
 296         u64 asid_generation;
 297         u32 max_asid;
 298         u32 next_asid;
 299         u32 min_asid;
 300
 301         struct page *save_area;
 302         unsigned long save_area_pa;
 303
 304         struct vmcb *current_vmcb;
 305
 306         /* index = sev_asid, value = vmcb pointer */
 307         struct vmcb **sev_vmcbs;
 308 };
 309
 310 DECLARE_PER_CPU(struct svm_cpu_data, svm_data);
 311
 312 void recalc_intercepts(struct vcpu_svm *svm);
 313
 314 static __always_inline struct kvm_svm *to_kvm_svm(struct kvm *kvm)
 315 {
 316         return container_of(kvm, struct kvm_svm, kvm);
 317 }
 318
 319 static __always_inline bool sev_guest(struct kvm *kvm)
 320 {
 321 #ifdef CONFIG_KVM_AMD_SEV
 322         struct kvm_sev_info *sev = &to_kvm_svm(kvm)->sev_info;
 323
 324         return sev->active;
 325 #else
 326         return false;
 327 #endif
 328 }
 329
 330 static __always_inline bool sev_es_guest(struct kvm *kvm)
 331 {
 332 #ifdef CONFIG_KVM_AMD_SEV
 333         struct kvm_sev_info *sev = &to_kvm_svm(kvm)->sev_info;
 334
 335         return sev->es_active && !WARN_ON_ONCE(!sev->active);
 336 #else
 337         return false;
 338 #endif
 339 }
 340
 341 static inline void vmcb_mark_all_dirty(struct vmcb *vmcb)
 342 {
 343         vmcb->control.clean = 0;
 344 }
 345
 346 static inline void vmcb_mark_all_clean(struct vmcb *vmcb)
 347 {
 348         vmcb->control.clean = VMCB_ALL_CLEAN_MASK
 349                                & ~VMCB_ALWAYS_DIRTY_MASK;
 350 }
 351
 352 static inline void vmcb_mark_dirty(struct vmcb *vmcb, int bit)
 353 {
 354         vmcb->control.clean &= ~(1 << bit);
 355 }
 356
 357 static inline bool vmcb_is_dirty(struct vmcb *vmcb, int bit)
 358 {
 359         return !test_bit(bit, (unsigned long *)&vmcb->control.clean);
 360 }
 361
 362 static __always_inline struct vcpu_svm *to_svm(struct kvm_vcpu *vcpu)
 363 {
 364         return container_of(vcpu, struct vcpu_svm, vcpu);
 365 }
 366
 367 /*
 368  * Only the PDPTRs are loaded on demand into the shadow MMU.  All other
 369  * fields are synchronized on VM-Exit, because accessing the VMCB is cheap.
 370  *
 371  * CR3 might be out of date in the VMCB but it is not marked dirty; instead,
 372  * KVM_REQ_LOAD_MMU_PGD is always requested when the cached vcpu->arch.cr3
 373  * is changed.  svm_load_mmu_pgd() then syncs the new CR3 value into the VMCB.
 374  */
 375 #define SVM_REGS_LAZY_LOAD_SET  (1 << VCPU_EXREG_PDPTR)
 376
 377 static inline void vmcb_set_intercept(struct vmcb_control_area *control, u32 bit)
 378 {
 379         WARN_ON_ONCE(bit >= 32 * MAX_INTERCEPT);
 380         __set_bit(bit, (unsigned long *)&control->intercepts);
 381 }
 382
 383 static inline void vmcb_clr_intercept(struct vmcb_control_area *control, u32 bit)
 384 {
 385         WARN_ON_ONCE(bit >= 32 * MAX_INTERCEPT);
 386         __clear_bit(bit, (unsigned long *)&control->intercepts);
 387 }
 388
 389 static inline bool vmcb_is_intercept(struct vmcb_control_area *control, u32 bit)
 390 {
 391         WARN_ON_ONCE(bit >= 32 * MAX_INTERCEPT);
 392         return test_bit(bit, (unsigned long *)&control->intercepts);
 393 }
 394
 395 static inline bool vmcb12_is_intercept(struct vmcb_ctrl_area_cached *control, u32 bit)
 396 {
 397         WARN_ON_ONCE(bit >= 32 * MAX_INTERCEPT);
 398         return test_bit(bit, (unsigned long *)&control->intercepts);
 399 }
 400
 401 static inline void set_exception_intercept(struct vcpu_svm *svm, u32 bit)
 402 {
 403         struct vmcb *vmcb = svm->vmcb01.ptr;
 404
 405         WARN_ON_ONCE(bit >= 32);
 406         vmcb_set_intercept(&vmcb->control, INTERCEPT_EXCEPTION_OFFSET + bit);
 407
 408         recalc_intercepts(svm);
 409 }
 410
 411 static inline void clr_exception_intercept(struct vcpu_svm *svm, u32 bit)
 412 {
 413         struct vmcb *vmcb = svm->vmcb01.ptr;
 414
 415         WARN_ON_ONCE(bit >= 32);
 416         vmcb_clr_intercept(&vmcb->control, INTERCEPT_EXCEPTION_OFFSET + bit);
 417
 418         recalc_intercepts(svm);
 419 }
 420
 421 static inline void svm_set_intercept(struct vcpu_svm *svm, int bit)
 422 {
 423         struct vmcb *vmcb = svm->vmcb01.ptr;
 424
 425         vmcb_set_intercept(&vmcb->control, bit);
 426
 427         recalc_intercepts(svm);
 428 }
 429
 430 static inline void svm_clr_intercept(struct vcpu_svm *svm, int bit)
 431 {
 432         struct vmcb *vmcb = svm->vmcb01.ptr;
 433
 434         vmcb_clr_intercept(&vmcb->control, bit);
 435
 436         recalc_intercepts(svm);
 437 }
 438
 439 static inline bool svm_is_intercept(struct vcpu_svm *svm, int bit)
 440 {
 441         return vmcb_is_intercept(&svm->vmcb->control, bit);
 442 }
 443
 444 static inline bool nested_vgif_enabled(struct vcpu_svm *svm)
 445 {
 446         return guest_can_use(&svm->vcpu, X86_FEATURE_VGIF) &&
 447                (svm->nested.ctl.int_ctl & V_GIF_ENABLE_MASK);
 448 }
 449
 450 static inline struct vmcb *get_vgif_vmcb(struct vcpu_svm *svm)
 451 {
 452         if (!vgif)
 453                 return NULL;
 454
 455         if (is_guest_mode(&svm->vcpu) && !nested_vgif_enabled(svm))
 456                 return svm->nested.vmcb02.ptr;
 457         else
 458                 return svm->vmcb01.ptr;
 459 }
 460
 461 static inline void enable_gif(struct vcpu_svm *svm)
 462 {
 463         struct vmcb *vmcb = get_vgif_vmcb(svm);
 464
 465         if (vmcb)
 466                 vmcb->control.int_ctl |= V_GIF_MASK;
 467         else
 468                 svm->guest_gif = true;
 469 }
 470
 471 static inline void disable_gif(struct vcpu_svm *svm)
 472 {
 473         struct vmcb *vmcb = get_vgif_vmcb(svm);
 474
 475         if (vmcb)
 476                 vmcb->control.int_ctl &= ~V_GIF_MASK;
 477         else
 478                 svm->guest_gif = false;
 479 }
 480
 481 static inline bool gif_set(struct vcpu_svm *svm)
 482 {
 483         struct vmcb *vmcb = get_vgif_vmcb(svm);
 484
 485         if (vmcb)
 486                 return !!(vmcb->control.int_ctl & V_GIF_MASK);
 487         else
 488                 return svm->guest_gif;
 489 }
 490
 491 static inline bool nested_npt_enabled(struct vcpu_svm *svm)
 492 {
 493         return svm->nested.ctl.nested_ctl & SVM_NESTED_CTL_NP_ENABLE;
 494 }
 495
 496 static inline bool nested_vnmi_enabled(struct vcpu_svm *svm)
 497 {
 498         return guest_can_use(&svm->vcpu, X86_FEATURE_VNMI) &&
 499                (svm->nested.ctl.int_ctl & V_NMI_ENABLE_MASK);
 500 }
 501
 502 static inline bool is_x2apic_msrpm_offset(u32 offset)
 503 {
 504         /* 4 msrs per u8, and 4 u8 in u32 */
 505         u32 msr = offset * 16;
 506
 507         return (msr >= APIC_BASE_MSR) &&
 508                (msr < (APIC_BASE_MSR + 0x100));
 509 }
 510
 511 static inline struct vmcb *get_vnmi_vmcb_l1(struct vcpu_svm *svm)
 512 {
 513         if (!vnmi)
 514                 return NULL;
 515
 516         if (is_guest_mode(&svm->vcpu))
 517                 return NULL;
 518         else
 519                 return svm->vmcb01.ptr;
 520 }
 521
 522 static inline bool is_vnmi_enabled(struct vcpu_svm *svm)
 523 {
 524         struct vmcb *vmcb = get_vnmi_vmcb_l1(svm);
 525
 526         if (vmcb)
 527                 return !!(vmcb->control.int_ctl & V_NMI_ENABLE_MASK);
 528         else
 529                 return false;
 530 }
 531
 532 /* svm.c */
 533 #define MSR_INVALID                             0xffffffffU
 534
 535 #define DEBUGCTL_RESERVED_BITS (~(0x3fULL))
 536
 537 extern bool dump_invalid_vmcb;
 538
 539 u32 svm_msrpm_offset(u32 msr);
 540 u32 *svm_vcpu_alloc_msrpm(void);
 541 void svm_vcpu_init_msrpm(struct kvm_vcpu *vcpu, u32 *msrpm);
 542 void svm_vcpu_free_msrpm(u32 *msrpm);
 543 void svm_copy_lbrs(struct vmcb *to_vmcb, struct vmcb *from_vmcb);
 544 void svm_update_lbrv(struct kvm_vcpu *vcpu);
 545
 546 int svm_set_efer(struct kvm_vcpu *vcpu, u64 efer);
 547 void svm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
 548 void svm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
 549 void disable_nmi_singlestep(struct vcpu_svm *svm);
 550 bool svm_smi_blocked(struct kvm_vcpu *vcpu);
 551 bool svm_nmi_blocked(struct kvm_vcpu *vcpu);
 552 bool svm_interrupt_blocked(struct kvm_vcpu *vcpu);
 553 void svm_set_gif(struct vcpu_svm *svm, bool value);
 554 int svm_invoke_exit_handler(struct kvm_vcpu *vcpu, u64 exit_code);
 555 void set_msr_interception(struct kvm_vcpu *vcpu, u32 *msrpm, u32 msr,
 556                           int read, int write);
 557 void svm_set_x2apic_msr_interception(struct vcpu_svm *svm, bool disable);
 558 void svm_complete_interrupt_delivery(struct kvm_vcpu *vcpu, int delivery_mode,
 559                                      int trig_mode, int vec);
 560
 561 /* nested.c */
 562
 563 #define NESTED_EXIT_HOST        0       /* Exit handled on host level */
 564 #define NESTED_EXIT_DONE        1       /* Exit caused nested vmexit  */
 565 #define NESTED_EXIT_CONTINUE    2       /* Further checks needed      */
 566
 567 static inline bool nested_svm_virtualize_tpr(struct kvm_vcpu *vcpu)
 568 {
 569         struct vcpu_svm *svm = to_svm(vcpu);
 570
 571         return is_guest_mode(vcpu) && (svm->nested.ctl.int_ctl & V_INTR_MASKING_MASK);
 572 }
 573
 574 static inline bool nested_exit_on_smi(struct vcpu_svm *svm)
 575 {
 576         return vmcb12_is_intercept(&svm->nested.ctl, INTERCEPT_SMI);
 577 }
 578
 579 static inline bool nested_exit_on_intr(struct vcpu_svm *svm)
 580 {
 581         return vmcb12_is_intercept(&svm->nested.ctl, INTERCEPT_INTR);
 582 }
 583
 584 static inline bool nested_exit_on_nmi(struct vcpu_svm *svm)
 585 {
 586         return vmcb12_is_intercept(&svm->nested.ctl, INTERCEPT_NMI);
 587 }
 588
 589 int enter_svm_guest_mode(struct kvm_vcpu *vcpu,
 590                          u64 vmcb_gpa, struct vmcb *vmcb12, bool from_vmrun);
 591 void svm_leave_nested(struct kvm_vcpu *vcpu);
 592 void svm_free_nested(struct vcpu_svm *svm);
 593 int svm_allocate_nested(struct vcpu_svm *svm);
 594 int nested_svm_vmrun(struct kvm_vcpu *vcpu);
 595 void svm_copy_vmrun_state(struct vmcb_save_area *to_save,
 596                           struct vmcb_save_area *from_save);
 597 void svm_copy_vmloadsave_state(struct vmcb *to_vmcb, struct vmcb *from_vmcb);
 598 int nested_svm_vmexit(struct vcpu_svm *svm);
 599
 600 static inline int nested_svm_simple_vmexit(struct vcpu_svm *svm, u32 exit_code)
 601 {
 602         svm->vmcb->control.exit_code   = exit_code;
 603         svm->vmcb->control.exit_info_1 = 0;
 604         svm->vmcb->control.exit_info_2 = 0;
 605         return nested_svm_vmexit(svm);
 606 }
 607
 608 int nested_svm_exit_handled(struct vcpu_svm *svm);
 609 int nested_svm_check_permissions(struct kvm_vcpu *vcpu);
 610 int nested_svm_check_exception(struct vcpu_svm *svm, unsigned nr,
 611                                bool has_error_code, u32 error_code);
 612 int nested_svm_exit_special(struct vcpu_svm *svm);
 613 void nested_svm_update_tsc_ratio_msr(struct kvm_vcpu *vcpu);
 614 void svm_write_tsc_multiplier(struct kvm_vcpu *vcpu);
 615 void nested_copy_vmcb_control_to_cache(struct vcpu_svm *svm,
 616                                        struct vmcb_control_area *control);
 617 void nested_copy_vmcb_save_to_cache(struct vcpu_svm *svm,
 618                                     struct vmcb_save_area *save);
 619 void nested_sync_control_from_vmcb02(struct vcpu_svm *svm);
 620 void nested_vmcb02_compute_g_pat(struct vcpu_svm *svm);
 621 void svm_switch_vmcb(struct vcpu_svm *svm, struct kvm_vmcb_info *target_vmcb);
 622
 623 extern struct kvm_x86_nested_ops svm_nested_ops;
 624
 625 /* avic.c */
 626 #define AVIC_REQUIRED_APICV_INHIBITS                    \
 627 (                                                       \
 628         BIT(APICV_INHIBIT_REASON_DISABLE) |             \
 629         BIT(APICV_INHIBIT_REASON_ABSENT) |              \
 630         BIT(APICV_INHIBIT_REASON_HYPERV) |              \
 631         BIT(APICV_INHIBIT_REASON_NESTED) |              \
 632         BIT(APICV_INHIBIT_REASON_IRQWIN) |              \
 633         BIT(APICV_INHIBIT_REASON_PIT_REINJ) |           \
 634         BIT(APICV_INHIBIT_REASON_BLOCKIRQ) |            \
 635         BIT(APICV_INHIBIT_REASON_SEV)      |            \
 636         BIT(APICV_INHIBIT_REASON_PHYSICAL_ID_ALIASED) | \
 637         BIT(APICV_INHIBIT_REASON_APIC_ID_MODIFIED) |    \
 638         BIT(APICV_INHIBIT_REASON_APIC_BASE_MODIFIED) |  \
 639         BIT(APICV_INHIBIT_REASON_LOGICAL_ID_ALIASED)    \
 640 )
 641
 642 bool avic_hardware_setup(void);
 643 int avic_ga_log_notifier(u32 ga_tag);
 644 void avic_vm_destroy(struct kvm *kvm);
 645 int avic_vm_init(struct kvm *kvm);
 646 void avic_init_vmcb(struct vcpu_svm *svm, struct vmcb *vmcb);
 647 int avic_incomplete_ipi_interception(struct kvm_vcpu *vcpu);
 648 int avic_unaccelerated_access_interception(struct kvm_vcpu *vcpu);
 649 int avic_init_vcpu(struct vcpu_svm *svm);
 650 void avic_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
 651 void avic_vcpu_put(struct kvm_vcpu *vcpu);
 652 void avic_apicv_post_state_restore(struct kvm_vcpu *vcpu);
 653 void avic_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu);
 654 int avic_pi_update_irte(struct kvm *kvm, unsigned int host_irq,
 655                         uint32_t guest_irq, bool set);
 656 void avic_vcpu_blocking(struct kvm_vcpu *vcpu);
 657 void avic_vcpu_unblocking(struct kvm_vcpu *vcpu);
 658 void avic_ring_doorbell(struct kvm_vcpu *vcpu);
 659 unsigned long avic_vcpu_get_apicv_inhibit_reasons(struct kvm_vcpu *vcpu);
 660 void avic_refresh_virtual_apic_mode(struct kvm_vcpu *vcpu);
 661
 662
 663 /* sev.c */
 664
 665 #define GHCB_VERSION_MAX        1ULL
 666 #define GHCB_VERSION_MIN        1ULL
 667
 668
 669 extern unsigned int max_sev_asid;
 670
 671 void sev_vm_destroy(struct kvm *kvm);
 672 int sev_mem_enc_ioctl(struct kvm *kvm, void __user *argp);
 673 int sev_mem_enc_register_region(struct kvm *kvm,
 674                                 struct kvm_enc_region *range);
 675 int sev_mem_enc_unregister_region(struct kvm *kvm,
 676                                   struct kvm_enc_region *range);
 677 int sev_vm_copy_enc_context_from(struct kvm *kvm, unsigned int source_fd);
 678 int sev_vm_move_enc_context_from(struct kvm *kvm, unsigned int source_fd);
 679 void sev_guest_memory_reclaimed(struct kvm *kvm);
 680
 681 void pre_sev_run(struct vcpu_svm *svm, int cpu);
 682 void __init sev_set_cpu_caps(void);
 683 void __init sev_hardware_setup(void);
 684 void sev_hardware_unsetup(void);
 685 int sev_cpu_init(struct svm_cpu_data *sd);
 686 void sev_init_vmcb(struct vcpu_svm *svm);
 687 void sev_free_vcpu(struct kvm_vcpu *vcpu);
 688 int sev_handle_vmgexit(struct kvm_vcpu *vcpu);
 689 int sev_es_string_io(struct vcpu_svm *svm, int size, unsigned int port, int in);
 690 void sev_es_vcpu_reset(struct vcpu_svm *svm);
 691 void sev_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, u8 vector);
 692 void sev_es_prepare_switch_to_guest(struct sev_es_save_area *hostsa);
 693 void sev_es_unmap_ghcb(struct vcpu_svm *svm);
 694
 695 /* vmenter.S */
 696
 697 void __svm_sev_es_vcpu_run(struct vcpu_svm *svm, bool spec_ctrl_intercepted);
 698 void __svm_vcpu_run(struct vcpu_svm *svm, bool spec_ctrl_intercepted);
 699
 700 #define DEFINE_KVM_GHCB_ACCESSORS(field)                                                \
 701         static __always_inline bool kvm_ghcb_##field##_is_valid(const struct vcpu_svm *svm) \
 702         {                                                                       \
 703                 return test_bit(GHCB_BITMAP_IDX(field),                         \
 704                                 (unsigned long *)&svm->sev_es.valid_bitmap);    \
 705         }                                                                       \
 706                                                                                 \
 707         static __always_inline u64 kvm_ghcb_get_##field##_if_valid(struct vcpu_svm *svm, struct ghcb *ghcb) \
 708         {                                                                       \
 709                 return kvm_ghcb_##field##_is_valid(svm) ? ghcb->save.field : 0; \
 710         }                                                                       \
 711
 712 DEFINE_KVM_GHCB_ACCESSORS(cpl)
 713 DEFINE_KVM_GHCB_ACCESSORS(rax)
 714 DEFINE_KVM_GHCB_ACCESSORS(rcx)
 715 DEFINE_KVM_GHCB_ACCESSORS(rdx)
 716 DEFINE_KVM_GHCB_ACCESSORS(rbx)
 717 DEFINE_KVM_GHCB_ACCESSORS(rsi)
 718 DEFINE_KVM_GHCB_ACCESSORS(sw_exit_code)
 719 DEFINE_KVM_GHCB_ACCESSORS(sw_exit_info_1)
 720 DEFINE_KVM_GHCB_ACCESSORS(sw_exit_info_2)
 721 DEFINE_KVM_GHCB_ACCESSORS(sw_scratch)
 722 DEFINE_KVM_GHCB_ACCESSORS(xcr0)
 723
 724 #endif