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 #define __sme_page_pa(x) __sme_set(page_to_pfn(x) << PAGE_SHIFT)
  26
  27 #define IOPM_SIZE PAGE_SIZE * 3
  28 #define MSRPM_SIZE PAGE_SIZE * 2
  29
  30 #define MAX_DIRECT_ACCESS_MSRS  20
  31 #define MSRPM_OFFSETS   16
  32 extern u32 msrpm_offsets[MSRPM_OFFSETS] __read_mostly;
  33 extern bool npt_enabled;
  34 extern bool intercept_smi;
  35
  36 /*
  37  * Clean bits in VMCB.
  38  * VMCB_ALL_CLEAN_MASK might also need to
  39  * be updated if this enum is modified.
  40  */
  41 enum {
  42         VMCB_INTERCEPTS, /* Intercept vectors, TSC offset,
  43                             pause filter count */
  44         VMCB_PERM_MAP,   /* IOPM Base and MSRPM Base */
  45         VMCB_ASID,       /* ASID */
  46         VMCB_INTR,       /* int_ctl, int_vector */
  47         VMCB_NPT,        /* npt_en, nCR3, gPAT */
  48         VMCB_CR,         /* CR0, CR3, CR4, EFER */
  49         VMCB_DR,         /* DR6, DR7 */
  50         VMCB_DT,         /* GDT, IDT */
  51         VMCB_SEG,        /* CS, DS, SS, ES, CPL */
  52         VMCB_CR2,        /* CR2 only */
  53         VMCB_LBR,        /* DBGCTL, BR_FROM, BR_TO, LAST_EX_FROM, LAST_EX_TO */
  54         VMCB_AVIC,       /* AVIC APIC_BAR, AVIC APIC_BACKING_PAGE,
  55                           * AVIC PHYSICAL_TABLE pointer,
  56                           * AVIC LOGICAL_TABLE pointer
  57                           */
  58         VMCB_SW = 31,    /* Reserved for hypervisor/software use */
  59 };
  60
  61 #define VMCB_ALL_CLEAN_MASK (                                   \
  62         (1U << VMCB_INTERCEPTS) | (1U << VMCB_PERM_MAP) |       \
  63         (1U << VMCB_ASID) | (1U << VMCB_INTR) |                 \
  64         (1U << VMCB_NPT) | (1U << VMCB_CR) | (1U << VMCB_DR) |  \
  65         (1U << VMCB_DT) | (1U << VMCB_SEG) | (1U << VMCB_CR2) | \
  66         (1U << VMCB_LBR) | (1U << VMCB_AVIC) |                  \
  67         (1U << VMCB_SW))
  68
  69 /* TPR and CR2 are always written before VMRUN */
  70 #define VMCB_ALWAYS_DIRTY_MASK  ((1U << VMCB_INTR) | (1U << VMCB_CR2))
  71
  72 struct kvm_sev_info {
  73         bool active;            /* SEV enabled guest */
  74         bool es_active;         /* SEV-ES enabled guest */
  75         unsigned int asid;      /* ASID used for this guest */
  76         unsigned int handle;    /* SEV firmware handle */
  77         int fd;                 /* SEV device fd */
  78         unsigned long pages_locked; /* Number of pages locked */
  79         struct list_head regions_list;  /* List of registered regions */
  80         u64 ap_jump_table;      /* SEV-ES AP Jump Table address */
  81         struct kvm *enc_context_owner; /* Owner of copied encryption context */
  82         struct misc_cg *misc_cg; /* For misc cgroup accounting */
  83 };
  84
  85 struct kvm_svm {
  86         struct kvm kvm;
  87
  88         /* Struct members for AVIC */
  89         u32 avic_vm_id;
  90         struct page *avic_logical_id_table_page;
  91         struct page *avic_physical_id_table_page;
  92         struct hlist_node hnode;
  93
  94         struct kvm_sev_info sev_info;
  95 };
  96
  97 struct kvm_vcpu;
  98
  99 struct kvm_vmcb_info {
 100         struct vmcb *ptr;
 101         unsigned long pa;
 102         int cpu;
 103         uint64_t asid_generation;
 104 };
 105
 106 struct svm_nested_state {
 107         struct kvm_vmcb_info vmcb02;
 108         u64 hsave_msr;
 109         u64 vm_cr_msr;
 110         u64 vmcb12_gpa;
 111         u64 last_vmcb12_gpa;
 112
 113         /* These are the merged vectors */
 114         u32 *msrpm;
 115
 116         /* A VMRUN has started but has not yet been performed, so
 117          * we cannot inject a nested vmexit yet.  */
 118         bool nested_run_pending;
 119
 120         /* cache for control fields of the guest */
 121         struct vmcb_control_area ctl;
 122
 123         bool initialized;
 124 };
 125
 126 struct vcpu_svm {
 127         struct kvm_vcpu vcpu;
 128         /* vmcb always points at current_vmcb->ptr, it's purely a shorthand. */
 129         struct vmcb *vmcb;
 130         struct kvm_vmcb_info vmcb01;
 131         struct kvm_vmcb_info *current_vmcb;
 132         struct svm_cpu_data *svm_data;
 133         u32 asid;
 134         u32 sysenter_esp_hi;
 135         u32 sysenter_eip_hi;
 136         uint64_t tsc_aux;
 137
 138         u64 msr_decfg;
 139
 140         u64 next_rip;
 141
 142         u64 spec_ctrl;
 143         /*
 144          * Contains guest-controlled bits of VIRT_SPEC_CTRL, which will be
 145          * translated into the appropriate L2_CFG bits on the host to
 146          * perform speculative control.
 147          */
 148         u64 virt_spec_ctrl;
 149
 150         u32 *msrpm;
 151
 152         ulong nmi_iret_rip;
 153
 154         struct svm_nested_state nested;
 155
 156         bool nmi_singlestep;
 157         u64 nmi_singlestep_guest_rflags;
 158
 159         unsigned int3_injected;
 160         unsigned long int3_rip;
 161
 162         /* cached guest cpuid flags for faster access */
 163         bool nrips_enabled      : 1;
 164
 165         u32 ldr_reg;
 166         u32 dfr_reg;
 167         struct page *avic_backing_page;
 168         u64 *avic_physical_id_cache;
 169         bool avic_is_running;
 170
 171         /*
 172          * Per-vcpu list of struct amd_svm_iommu_ir:
 173          * This is used mainly to store interrupt remapping information used
 174          * when update the vcpu affinity. This avoids the need to scan for
 175          * IRTE and try to match ga_tag in the IOMMU driver.
 176          */
 177         struct list_head ir_list;
 178         spinlock_t ir_list_lock;
 179
 180         /* Save desired MSR intercept (read: pass-through) state */
 181         struct {
 182                 DECLARE_BITMAP(read, MAX_DIRECT_ACCESS_MSRS);
 183                 DECLARE_BITMAP(write, MAX_DIRECT_ACCESS_MSRS);
 184         } shadow_msr_intercept;
 185
 186         /* SEV-ES support */
 187         struct vmcb_save_area *vmsa;
 188         struct ghcb *ghcb;
 189         struct kvm_host_map ghcb_map;
 190         bool received_first_sipi;
 191
 192         /* SEV-ES scratch area support */
 193         void *ghcb_sa;
 194         u32 ghcb_sa_len;
 195         bool ghcb_sa_sync;
 196         bool ghcb_sa_free;
 197
 198         bool guest_state_loaded;
 199 };
 200
 201 struct svm_cpu_data {
 202         int cpu;
 203
 204         u64 asid_generation;
 205         u32 max_asid;
 206         u32 next_asid;
 207         u32 min_asid;
 208         struct kvm_ldttss_desc *tss_desc;
 209
 210         struct page *save_area;
 211         struct vmcb *current_vmcb;
 212
 213         /* index = sev_asid, value = vmcb pointer */
 214         struct vmcb **sev_vmcbs;
 215 };
 216
 217 DECLARE_PER_CPU(struct svm_cpu_data *, svm_data);
 218
 219 void recalc_intercepts(struct vcpu_svm *svm);
 220
 221 static inline struct kvm_svm *to_kvm_svm(struct kvm *kvm)
 222 {
 223         return container_of(kvm, struct kvm_svm, kvm);
 224 }
 225
 226 static inline bool sev_guest(struct kvm *kvm)
 227 {
 228 #ifdef CONFIG_KVM_AMD_SEV
 229         struct kvm_sev_info *sev = &to_kvm_svm(kvm)->sev_info;
 230
 231         return sev->active;
 232 #else
 233         return false;
 234 #endif
 235 }
 236
 237 static inline bool sev_es_guest(struct kvm *kvm)
 238 {
 239 #ifdef CONFIG_KVM_AMD_SEV
 240         struct kvm_sev_info *sev = &to_kvm_svm(kvm)->sev_info;
 241
 242         return sev_guest(kvm) && sev->es_active;
 243 #else
 244         return false;
 245 #endif
 246 }
 247
 248 static inline void vmcb_mark_all_dirty(struct vmcb *vmcb)
 249 {
 250         vmcb->control.clean = 0;
 251 }
 252
 253 static inline void vmcb_mark_all_clean(struct vmcb *vmcb)
 254 {
 255         vmcb->control.clean = VMCB_ALL_CLEAN_MASK
 256                                & ~VMCB_ALWAYS_DIRTY_MASK;
 257 }
 258
 259 static inline bool vmcb_is_clean(struct vmcb *vmcb, int bit)
 260 {
 261         return (vmcb->control.clean & (1 << bit));
 262 }
 263
 264 static inline void vmcb_mark_dirty(struct vmcb *vmcb, int bit)
 265 {
 266         vmcb->control.clean &= ~(1 << bit);
 267 }
 268
 269 static inline bool vmcb_is_dirty(struct vmcb *vmcb, int bit)
 270 {
 271         return !test_bit(bit, (unsigned long *)&vmcb->control.clean);
 272 }
 273
 274 static inline struct vcpu_svm *to_svm(struct kvm_vcpu *vcpu)
 275 {
 276         return container_of(vcpu, struct vcpu_svm, vcpu);
 277 }
 278
 279 static inline void vmcb_set_intercept(struct vmcb_control_area *control, u32 bit)
 280 {
 281         WARN_ON_ONCE(bit >= 32 * MAX_INTERCEPT);
 282         __set_bit(bit, (unsigned long *)&control->intercepts);
 283 }
 284
 285 static inline void vmcb_clr_intercept(struct vmcb_control_area *control, u32 bit)
 286 {
 287         WARN_ON_ONCE(bit >= 32 * MAX_INTERCEPT);
 288         __clear_bit(bit, (unsigned long *)&control->intercepts);
 289 }
 290
 291 static inline bool vmcb_is_intercept(struct vmcb_control_area *control, u32 bit)
 292 {
 293         WARN_ON_ONCE(bit >= 32 * MAX_INTERCEPT);
 294         return test_bit(bit, (unsigned long *)&control->intercepts);
 295 }
 296
 297 static inline void set_dr_intercepts(struct vcpu_svm *svm)
 298 {
 299         struct vmcb *vmcb = svm->vmcb01.ptr;
 300
 301         if (!sev_es_guest(svm->vcpu.kvm)) {
 302                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR0_READ);
 303                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR1_READ);
 304                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR2_READ);
 305                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR3_READ);
 306                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR4_READ);
 307                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR5_READ);
 308                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR6_READ);
 309                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR0_WRITE);
 310                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR1_WRITE);
 311                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR2_WRITE);
 312                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR3_WRITE);
 313                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR4_WRITE);
 314                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR5_WRITE);
 315                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR6_WRITE);
 316         }
 317
 318         vmcb_set_intercept(&vmcb->control, INTERCEPT_DR7_READ);
 319         vmcb_set_intercept(&vmcb->control, INTERCEPT_DR7_WRITE);
 320
 321         recalc_intercepts(svm);
 322 }
 323
 324 static inline void clr_dr_intercepts(struct vcpu_svm *svm)
 325 {
 326         struct vmcb *vmcb = svm->vmcb01.ptr;
 327
 328         vmcb->control.intercepts[INTERCEPT_DR] = 0;
 329
 330         /* DR7 access must remain intercepted for an SEV-ES guest */
 331         if (sev_es_guest(svm->vcpu.kvm)) {
 332                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR7_READ);
 333                 vmcb_set_intercept(&vmcb->control, INTERCEPT_DR7_WRITE);
 334         }
 335
 336         recalc_intercepts(svm);
 337 }
 338
 339 static inline void set_exception_intercept(struct vcpu_svm *svm, u32 bit)
 340 {
 341         struct vmcb *vmcb = svm->vmcb01.ptr;
 342
 343         WARN_ON_ONCE(bit >= 32);
 344         vmcb_set_intercept(&vmcb->control, INTERCEPT_EXCEPTION_OFFSET + bit);
 345
 346         recalc_intercepts(svm);
 347 }
 348
 349 static inline void clr_exception_intercept(struct vcpu_svm *svm, u32 bit)
 350 {
 351         struct vmcb *vmcb = svm->vmcb01.ptr;
 352
 353         WARN_ON_ONCE(bit >= 32);
 354         vmcb_clr_intercept(&vmcb->control, INTERCEPT_EXCEPTION_OFFSET + bit);
 355
 356         recalc_intercepts(svm);
 357 }
 358
 359 static inline void svm_set_intercept(struct vcpu_svm *svm, int bit)
 360 {
 361         struct vmcb *vmcb = svm->vmcb01.ptr;
 362
 363         vmcb_set_intercept(&vmcb->control, bit);
 364
 365         recalc_intercepts(svm);
 366 }
 367
 368 static inline void svm_clr_intercept(struct vcpu_svm *svm, int bit)
 369 {
 370         struct vmcb *vmcb = svm->vmcb01.ptr;
 371
 372         vmcb_clr_intercept(&vmcb->control, bit);
 373
 374         recalc_intercepts(svm);
 375 }
 376
 377 static inline bool svm_is_intercept(struct vcpu_svm *svm, int bit)
 378 {
 379         return vmcb_is_intercept(&svm->vmcb->control, bit);
 380 }
 381
 382 static inline bool vgif_enabled(struct vcpu_svm *svm)
 383 {
 384         return !!(svm->vmcb->control.int_ctl & V_GIF_ENABLE_MASK);
 385 }
 386
 387 static inline void enable_gif(struct vcpu_svm *svm)
 388 {
 389         if (vgif_enabled(svm))
 390                 svm->vmcb->control.int_ctl |= V_GIF_MASK;
 391         else
 392                 svm->vcpu.arch.hflags |= HF_GIF_MASK;
 393 }
 394
 395 static inline void disable_gif(struct vcpu_svm *svm)
 396 {
 397         if (vgif_enabled(svm))
 398                 svm->vmcb->control.int_ctl &= ~V_GIF_MASK;
 399         else
 400                 svm->vcpu.arch.hflags &= ~HF_GIF_MASK;
 401 }
 402
 403 static inline bool gif_set(struct vcpu_svm *svm)
 404 {
 405         if (vgif_enabled(svm))
 406                 return !!(svm->vmcb->control.int_ctl & V_GIF_MASK);
 407         else
 408                 return !!(svm->vcpu.arch.hflags & HF_GIF_MASK);
 409 }
 410
 411 /* svm.c */
 412 #define MSR_INVALID                             0xffffffffU
 413
 414 extern bool dump_invalid_vmcb;
 415
 416 u32 svm_msrpm_offset(u32 msr);
 417 u32 *svm_vcpu_alloc_msrpm(void);
 418 void svm_vcpu_init_msrpm(struct kvm_vcpu *vcpu, u32 *msrpm);
 419 void svm_vcpu_free_msrpm(u32 *msrpm);
 420
 421 int svm_set_efer(struct kvm_vcpu *vcpu, u64 efer);
 422 void svm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
 423 void svm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
 424 void svm_flush_tlb(struct kvm_vcpu *vcpu);
 425 void disable_nmi_singlestep(struct vcpu_svm *svm);
 426 bool svm_smi_blocked(struct kvm_vcpu *vcpu);
 427 bool svm_nmi_blocked(struct kvm_vcpu *vcpu);
 428 bool svm_interrupt_blocked(struct kvm_vcpu *vcpu);
 429 void svm_set_gif(struct vcpu_svm *svm, bool value);
 430 int svm_invoke_exit_handler(struct kvm_vcpu *vcpu, u64 exit_code);
 431 void set_msr_interception(struct kvm_vcpu *vcpu, u32 *msrpm, u32 msr,
 432                           int read, int write);
 433
 434 /* nested.c */
 435
 436 #define NESTED_EXIT_HOST        0       /* Exit handled on host level */
 437 #define NESTED_EXIT_DONE        1       /* Exit caused nested vmexit  */
 438 #define NESTED_EXIT_CONTINUE    2       /* Further checks needed      */
 439
 440 static inline bool nested_svm_virtualize_tpr(struct kvm_vcpu *vcpu)
 441 {
 442         struct vcpu_svm *svm = to_svm(vcpu);
 443
 444         return is_guest_mode(vcpu) && (svm->nested.ctl.int_ctl & V_INTR_MASKING_MASK);
 445 }
 446
 447 static inline bool nested_exit_on_smi(struct vcpu_svm *svm)
 448 {
 449         return vmcb_is_intercept(&svm->nested.ctl, INTERCEPT_SMI);
 450 }
 451
 452 static inline bool nested_exit_on_intr(struct vcpu_svm *svm)
 453 {
 454         return vmcb_is_intercept(&svm->nested.ctl, INTERCEPT_INTR);
 455 }
 456
 457 static inline bool nested_exit_on_nmi(struct vcpu_svm *svm)
 458 {
 459         return vmcb_is_intercept(&svm->nested.ctl, INTERCEPT_NMI);
 460 }
 461
 462 int enter_svm_guest_mode(struct kvm_vcpu *vcpu,
 463                          u64 vmcb_gpa, struct vmcb *vmcb12, bool from_vmrun);
 464 void svm_leave_nested(struct vcpu_svm *svm);
 465 void svm_free_nested(struct vcpu_svm *svm);
 466 int svm_allocate_nested(struct vcpu_svm *svm);
 467 int nested_svm_vmrun(struct kvm_vcpu *vcpu);
 468 void svm_copy_vmrun_state(struct vmcb_save_area *to_save,
 469                           struct vmcb_save_area *from_save);
 470 void svm_copy_vmloadsave_state(struct vmcb *to_vmcb, struct vmcb *from_vmcb);
 471 int nested_svm_vmexit(struct vcpu_svm *svm);
 472
 473 static inline int nested_svm_simple_vmexit(struct vcpu_svm *svm, u32 exit_code)
 474 {
 475         svm->vmcb->control.exit_code   = exit_code;
 476         svm->vmcb->control.exit_info_1 = 0;
 477         svm->vmcb->control.exit_info_2 = 0;
 478         return nested_svm_vmexit(svm);
 479 }
 480
 481 int nested_svm_exit_handled(struct vcpu_svm *svm);
 482 int nested_svm_check_permissions(struct kvm_vcpu *vcpu);
 483 int nested_svm_check_exception(struct vcpu_svm *svm, unsigned nr,
 484                                bool has_error_code, u32 error_code);
 485 int nested_svm_exit_special(struct vcpu_svm *svm);
 486 void nested_load_control_from_vmcb12(struct vcpu_svm *svm,
 487                                      struct vmcb_control_area *control);
 488 void nested_sync_control_from_vmcb02(struct vcpu_svm *svm);
 489 void nested_vmcb02_compute_g_pat(struct vcpu_svm *svm);
 490 void svm_switch_vmcb(struct vcpu_svm *svm, struct kvm_vmcb_info *target_vmcb);
 491
 492 extern struct kvm_x86_nested_ops svm_nested_ops;
 493
 494 /* avic.c */
 495
 496 #define AVIC_LOGICAL_ID_ENTRY_GUEST_PHYSICAL_ID_MASK    (0xFF)
 497 #define AVIC_LOGICAL_ID_ENTRY_VALID_BIT                 31
 498 #define AVIC_LOGICAL_ID_ENTRY_VALID_MASK                (1 << 31)
 499
 500 #define AVIC_PHYSICAL_ID_ENTRY_HOST_PHYSICAL_ID_MASK    (0xFFULL)
 501 #define AVIC_PHYSICAL_ID_ENTRY_BACKING_PAGE_MASK        (0xFFFFFFFFFFULL << 12)
 502 #define AVIC_PHYSICAL_ID_ENTRY_IS_RUNNING_MASK          (1ULL << 62)
 503 #define AVIC_PHYSICAL_ID_ENTRY_VALID_MASK               (1ULL << 63)
 504
 505 #define VMCB_AVIC_APIC_BAR_MASK         0xFFFFFFFFFF000ULL
 506
 507 static inline bool avic_vcpu_is_running(struct kvm_vcpu *vcpu)
 508 {
 509         struct vcpu_svm *svm = to_svm(vcpu);
 510         u64 *entry = svm->avic_physical_id_cache;
 511
 512         if (!entry)
 513                 return false;
 514
 515         return (READ_ONCE(*entry) & AVIC_PHYSICAL_ID_ENTRY_IS_RUNNING_MASK);
 516 }
 517
 518 int avic_ga_log_notifier(u32 ga_tag);
 519 void avic_vm_destroy(struct kvm *kvm);
 520 int avic_vm_init(struct kvm *kvm);
 521 void avic_init_vmcb(struct vcpu_svm *svm);
 522 int avic_incomplete_ipi_interception(struct kvm_vcpu *vcpu);
 523 int avic_unaccelerated_access_interception(struct kvm_vcpu *vcpu);
 524 int avic_init_vcpu(struct vcpu_svm *svm);
 525 void avic_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
 526 void avic_vcpu_put(struct kvm_vcpu *vcpu);
 527 void avic_post_state_restore(struct kvm_vcpu *vcpu);
 528 void svm_set_virtual_apic_mode(struct kvm_vcpu *vcpu);
 529 void svm_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu);
 530 bool svm_check_apicv_inhibit_reasons(ulong bit);
 531 void svm_load_eoi_exitmap(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
 532 void svm_hwapic_irr_update(struct kvm_vcpu *vcpu, int max_irr);
 533 void svm_hwapic_isr_update(struct kvm_vcpu *vcpu, int max_isr);
 534 int svm_deliver_avic_intr(struct kvm_vcpu *vcpu, int vec);
 535 bool svm_dy_apicv_has_pending_interrupt(struct kvm_vcpu *vcpu);
 536 int svm_update_pi_irte(struct kvm *kvm, unsigned int host_irq,
 537                        uint32_t guest_irq, bool set);
 538 void svm_vcpu_blocking(struct kvm_vcpu *vcpu);
 539 void svm_vcpu_unblocking(struct kvm_vcpu *vcpu);
 540
 541 /* sev.c */
 542
 543 #define GHCB_VERSION_MAX        1ULL
 544 #define GHCB_VERSION_MIN        1ULL
 545
 546
 547 extern unsigned int max_sev_asid;
 548
 549 void sev_vm_destroy(struct kvm *kvm);
 550 int svm_mem_enc_op(struct kvm *kvm, void __user *argp);
 551 int svm_register_enc_region(struct kvm *kvm,
 552                             struct kvm_enc_region *range);
 553 int svm_unregister_enc_region(struct kvm *kvm,
 554                               struct kvm_enc_region *range);
 555 int svm_vm_copy_asid_from(struct kvm *kvm, unsigned int source_fd);
 556 void pre_sev_run(struct vcpu_svm *svm, int cpu);
 557 void __init sev_set_cpu_caps(void);
 558 void __init sev_hardware_setup(void);
 559 void sev_hardware_teardown(void);
 560 int sev_cpu_init(struct svm_cpu_data *sd);
 561 void sev_free_vcpu(struct kvm_vcpu *vcpu);
 562 int sev_handle_vmgexit(struct kvm_vcpu *vcpu);
 563 int sev_es_string_io(struct vcpu_svm *svm, int size, unsigned int port, int in);
 564 void sev_es_init_vmcb(struct vcpu_svm *svm);
 565 void sev_es_create_vcpu(struct vcpu_svm *svm);
 566 void sev_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, u8 vector);
 567 void sev_es_prepare_guest_switch(struct vcpu_svm *svm, unsigned int cpu);
 568 void sev_es_unmap_ghcb(struct vcpu_svm *svm);
 569
 570 /* vmenter.S */
 571
 572 void __svm_sev_es_vcpu_run(unsigned long vmcb_pa);
 573 void __svm_vcpu_run(unsigned long vmcb_pa, unsigned long *regs);
 574
 575 #endif