drivers/kvm/svm.c

   1 /*
   2  * Kernel-based Virtual Machine driver for Linux
   3  *
   4  * AMD SVM support
   5  *
   6  * Copyright (C) 2006 Qumranet, Inc.
   7  *
   8  * Authors:
   9  *   Yaniv Kamay  <yaniv@qumranet.com>
  10  *   Avi Kivity   <avi@qumranet.com>
  11  *
  12  * This work is licensed under the terms of the GNU GPL, version 2.  See
  13  * the COPYING file in the top-level directory.
  14  *
  15  */
  16
  17 #include <linux/module.h>
  18 #include <linux/vmalloc.h>
  19 #include <linux/highmem.h>
  20 #include <linux/profile.h>
  21 #include <asm/desc.h>
  22
  23 #include "kvm_svm.h"
  24 #include "x86_emulate.h"
  25
  26 MODULE_AUTHOR("Qumranet");
  27 MODULE_LICENSE("GPL");
  28
  29 #define IOPM_ALLOC_ORDER 2
  30 #define MSRPM_ALLOC_ORDER 1
  31
  32 #define DB_VECTOR 1
  33 #define UD_VECTOR 6
  34 #define GP_VECTOR 13
  35
  36 #define DR7_GD_MASK (1 << 13)
  37 #define DR6_BD_MASK (1 << 13)
  38 #define CR4_DE_MASK (1UL << 3)
  39
  40 #define SEG_TYPE_LDT 2
  41 #define SEG_TYPE_BUSY_TSS16 3
  42
  43 #define KVM_EFER_LMA (1 << 10)
  44 #define KVM_EFER_LME (1 << 8)
  45
  46 unsigned long iopm_base;
  47 unsigned long msrpm_base;
  48
  49 struct kvm_ldttss_desc {
  50         u16 limit0;
  51         u16 base0;
  52         unsigned base1 : 8, type : 5, dpl : 2, p : 1;
  53         unsigned limit1 : 4, zero0 : 3, g : 1, base2 : 8;
  54         u32 base3;
  55         u32 zero1;
  56 } __attribute__((packed));
  57
  58 struct svm_cpu_data {
  59         int cpu;
  60
  61         uint64_t asid_generation;
  62         uint32_t max_asid;
  63         uint32_t next_asid;
  64         struct kvm_ldttss_desc *tss_desc;
  65
  66         struct page *save_area;
  67 };
  68
  69 static DEFINE_PER_CPU(struct svm_cpu_data *, svm_data);
  70
  71 struct svm_init_data {
  72         int cpu;
  73         int r;
  74 };
  75
  76 static u32 msrpm_ranges[] = {0, 0xc0000000, 0xc0010000};
  77
  78 #define NUM_MSR_MAPS (sizeof(msrpm_ranges) / sizeof(*msrpm_ranges))
  79 #define MSRS_RANGE_SIZE 2048
  80 #define MSRS_IN_RANGE (MSRS_RANGE_SIZE * 8 / 2)
  81
  82 #define MAX_INST_SIZE 15
  83
  84 static unsigned get_addr_size(struct kvm_vcpu *vcpu)
  85 {
  86         struct vmcb_save_area *sa = &vcpu->svm->vmcb->save;
  87         u16 cs_attrib;
  88
  89         if (!(sa->cr0 & CR0_PE_MASK) || (sa->rflags & X86_EFLAGS_VM))
  90                 return 2;
  91
  92         cs_attrib = sa->cs.attrib;
  93
  94         return (cs_attrib & SVM_SELECTOR_L_MASK) ? 8 :
  95                                 (cs_attrib & SVM_SELECTOR_DB_MASK) ? 4 : 2;
  96 }
  97
  98 static inline u8 pop_irq(struct kvm_vcpu *vcpu)
  99 {
 100         int word_index = __ffs(vcpu->irq_summary);
 101         int bit_index = __ffs(vcpu->irq_pending[word_index]);
 102         int irq = word_index * BITS_PER_LONG + bit_index;
 103
 104         clear_bit(bit_index, &vcpu->irq_pending[word_index]);
 105         if (!vcpu->irq_pending[word_index])
 106                 clear_bit(word_index, &vcpu->irq_summary);
 107         return irq;
 108 }
 109
 110 static inline void push_irq(struct kvm_vcpu *vcpu, u8 irq)
 111 {
 112         set_bit(irq, vcpu->irq_pending);
 113         set_bit(irq / BITS_PER_LONG, &vcpu->irq_summary);
 114 }
 115
 116 static inline void clgi(void)
 117 {
 118         asm volatile (SVM_CLGI);
 119 }
 120
 121 static inline void stgi(void)
 122 {
 123         asm volatile (SVM_STGI);
 124 }
 125
 126 static inline void invlpga(unsigned long addr, u32 asid)
 127 {
 128         asm volatile (SVM_INVLPGA :: "a"(addr), "c"(asid));
 129 }
 130
 131 static inline unsigned long kvm_read_cr2(void)
 132 {
 133         unsigned long cr2;
 134
 135         asm volatile ("mov %%cr2, %0" : "=r" (cr2));
 136         return cr2;
 137 }
 138
 139 static inline void kvm_write_cr2(unsigned long val)
 140 {
 141         asm volatile ("mov %0, %%cr2" :: "r" (val));
 142 }
 143
 144 static inline unsigned long read_dr6(void)
 145 {
 146         unsigned long dr6;
 147
 148         asm volatile ("mov %%dr6, %0" : "=r" (dr6));
 149         return dr6;
 150 }
 151
 152 static inline void write_dr6(unsigned long val)
 153 {
 154         asm volatile ("mov %0, %%dr6" :: "r" (val));
 155 }
 156
 157 static inline unsigned long read_dr7(void)
 158 {
 159         unsigned long dr7;
 160
 161         asm volatile ("mov %%dr7, %0" : "=r" (dr7));
 162         return dr7;
 163 }
 164
 165 static inline void write_dr7(unsigned long val)
 166 {
 167         asm volatile ("mov %0, %%dr7" :: "r" (val));
 168 }
 169
 170 static inline void force_new_asid(struct kvm_vcpu *vcpu)
 171 {
 172         vcpu->svm->asid_generation--;
 173 }
 174
 175 static inline void flush_guest_tlb(struct kvm_vcpu *vcpu)
 176 {
 177         force_new_asid(vcpu);
 178 }
 179
 180 static void svm_set_efer(struct kvm_vcpu *vcpu, u64 efer)
 181 {
 182         if (!(efer & KVM_EFER_LMA))
 183                 efer &= ~KVM_EFER_LME;
 184
 185         vcpu->svm->vmcb->save.efer = efer | MSR_EFER_SVME_MASK;
 186         vcpu->shadow_efer = efer;
 187 }
 188
 189 static void svm_inject_gp(struct kvm_vcpu *vcpu, unsigned error_code)
 190 {
 191         vcpu->svm->vmcb->control.event_inj =    SVM_EVTINJ_VALID |
 192                                                 SVM_EVTINJ_VALID_ERR |
 193                                                 SVM_EVTINJ_TYPE_EXEPT |
 194                                                 GP_VECTOR;
 195         vcpu->svm->vmcb->control.event_inj_err = error_code;
 196 }
 197
 198 static void inject_ud(struct kvm_vcpu *vcpu)
 199 {
 200         vcpu->svm->vmcb->control.event_inj =    SVM_EVTINJ_VALID |
 201                                                 SVM_EVTINJ_TYPE_EXEPT |
 202                                                 UD_VECTOR;
 203 }
 204
 205 static void inject_db(struct kvm_vcpu *vcpu)
 206 {
 207         vcpu->svm->vmcb->control.event_inj =    SVM_EVTINJ_VALID |
 208                                                 SVM_EVTINJ_TYPE_EXEPT |
 209                                                 DB_VECTOR;
 210 }
 211
 212 static int is_page_fault(uint32_t info)
 213 {
 214         info &= SVM_EVTINJ_VEC_MASK | SVM_EVTINJ_TYPE_MASK | SVM_EVTINJ_VALID;
 215         return info == (PF_VECTOR | SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_EXEPT);
 216 }
 217
 218 static int is_external_interrupt(u32 info)
 219 {
 220         info &= SVM_EVTINJ_TYPE_MASK | SVM_EVTINJ_VALID;
 221         return info == (SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_INTR);
 222 }
 223
 224 static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
 225 {
 226         if (!vcpu->svm->next_rip) {
 227                 printk(KERN_DEBUG "%s: NOP\n", __FUNCTION__);
 228                 return;
 229         }
 230         if (vcpu->svm->next_rip - vcpu->svm->vmcb->save.rip > 15) {
 231                 printk(KERN_ERR "%s: ip 0x%llx next 0x%llx\n",
 232                        __FUNCTION__,
 233                        vcpu->svm->vmcb->save.rip,
 234                        vcpu->svm->next_rip);
 235         }
 236
 237         vcpu->rip = vcpu->svm->vmcb->save.rip = vcpu->svm->next_rip;
 238         vcpu->svm->vmcb->control.int_state &= ~SVM_INTERRUPT_SHADOW_MASK;
 239
 240         vcpu->interrupt_window_open = 1;
 241 }
 242
 243 static int has_svm(void)
 244 {
 245         uint32_t eax, ebx, ecx, edx;
 246
 247         if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) {
 248                 printk(KERN_INFO "has_svm: not amd\n");
 249                 return 0;
 250         }
 251
 252         cpuid(0x80000000, &eax, &ebx, &ecx, &edx);
 253         if (eax < SVM_CPUID_FUNC) {
 254                 printk(KERN_INFO "has_svm: can't execute cpuid_8000000a\n");
 255                 return 0;
 256         }
 257
 258         cpuid(0x80000001, &eax, &ebx, &ecx, &edx);
 259         if (!(ecx & (1 << SVM_CPUID_FEATURE_SHIFT))) {
 260                 printk(KERN_DEBUG "has_svm: svm not available\n");
 261                 return 0;
 262         }
 263         return 1;
 264 }
 265
 266 static void svm_hardware_disable(void *garbage)
 267 {
 268         struct svm_cpu_data *svm_data
 269                 = per_cpu(svm_data, raw_smp_processor_id());
 270
 271         if (svm_data) {
 272                 uint64_t efer;
 273
 274                 wrmsrl(MSR_VM_HSAVE_PA, 0);
 275                 rdmsrl(MSR_EFER, efer);
 276                 wrmsrl(MSR_EFER, efer & ~MSR_EFER_SVME_MASK);
 277                 per_cpu(svm_data, raw_smp_processor_id()) = 0;
 278                 __free_page(svm_data->save_area);
 279                 kfree(svm_data);
 280         }
 281 }
 282
 283 static void svm_hardware_enable(void *garbage)
 284 {
 285
 286         struct svm_cpu_data *svm_data;
 287         uint64_t efer;
 288 #ifdef CONFIG_X86_64
 289         struct desc_ptr gdt_descr;
 290 #else
 291         struct Xgt_desc_struct gdt_descr;
 292 #endif
 293         struct desc_struct *gdt;
 294         int me = raw_smp_processor_id();
 295
 296         if (!has_svm()) {
 297                 printk(KERN_ERR "svm_cpu_init: err EOPNOTSUPP on %d\n", me);
 298                 return;
 299         }
 300         svm_data = per_cpu(svm_data, me);
 301
 302         if (!svm_data) {
 303                 printk(KERN_ERR "svm_cpu_init: svm_data is NULL on %d\n",
 304                        me);
 305                 return;
 306         }
 307
 308         svm_data->asid_generation = 1;
 309         svm_data->max_asid = cpuid_ebx(SVM_CPUID_FUNC) - 1;
 310         svm_data->next_asid = svm_data->max_asid + 1;
 311
 312         asm volatile ( "sgdt %0" : "=m"(gdt_descr) );
 313         gdt = (struct desc_struct *)gdt_descr.address;
 314         svm_data->tss_desc = (struct kvm_ldttss_desc *)(gdt + GDT_ENTRY_TSS);
 315
 316         rdmsrl(MSR_EFER, efer);
 317         wrmsrl(MSR_EFER, efer | MSR_EFER_SVME_MASK);
 318
 319         wrmsrl(MSR_VM_HSAVE_PA,
 320                page_to_pfn(svm_data->save_area) << PAGE_SHIFT);
 321 }
 322
 323 static int svm_cpu_init(int cpu)
 324 {
 325         struct svm_cpu_data *svm_data;
 326         int r;
 327
 328         svm_data = kzalloc(sizeof(struct svm_cpu_data), GFP_KERNEL);
 329         if (!svm_data)
 330                 return -ENOMEM;
 331         svm_data->cpu = cpu;
 332         svm_data->save_area = alloc_page(GFP_KERNEL);
 333         r = -ENOMEM;
 334         if (!svm_data->save_area)
 335                 goto err_1;
 336
 337         per_cpu(svm_data, cpu) = svm_data;
 338
 339         return 0;
 340
 341 err_1:
 342         kfree(svm_data);
 343         return r;
 344
 345 }
 346
 347 static int set_msr_interception(u32 *msrpm, unsigned msr,
 348                                 int read, int write)
 349 {
 350         int i;
 351
 352         for (i = 0; i < NUM_MSR_MAPS; i++) {
 353                 if (msr >= msrpm_ranges[i] &&
 354                     msr < msrpm_ranges[i] + MSRS_IN_RANGE) {
 355                         u32 msr_offset = (i * MSRS_IN_RANGE + msr -
 356                                           msrpm_ranges[i]) * 2;
 357
 358                         u32 *base = msrpm + (msr_offset / 32);
 359                         u32 msr_shift = msr_offset % 32;
 360                         u32 mask = ((write) ? 0 : 2) | ((read) ? 0 : 1);
 361                         *base = (*base & ~(0x3 << msr_shift)) |
 362                                 (mask << msr_shift);
 363                         return 1;
 364                 }
 365         }
 366         printk(KERN_DEBUG "%s: not found 0x%x\n", __FUNCTION__, msr);
 367         return 0;
 368 }
 369
 370 static __init int svm_hardware_setup(void)
 371 {
 372         int cpu;
 373         struct page *iopm_pages;
 374         struct page *msrpm_pages;
 375         void *msrpm_va;
 376         int r;
 377
 378         kvm_emulator_want_group7_invlpg();
 379
 380         iopm_pages = alloc_pages(GFP_KERNEL, IOPM_ALLOC_ORDER);
 381
 382         if (!iopm_pages)
 383                 return -ENOMEM;
 384         memset(page_address(iopm_pages), 0xff,
 385                                         PAGE_SIZE * (1 << IOPM_ALLOC_ORDER));
 386         iopm_base = page_to_pfn(iopm_pages) << PAGE_SHIFT;
 387
 388
 389         msrpm_pages = alloc_pages(GFP_KERNEL, MSRPM_ALLOC_ORDER);
 390
 391         r = -ENOMEM;
 392         if (!msrpm_pages)
 393                 goto err_1;
 394
 395         msrpm_va = page_address(msrpm_pages);
 396         memset(msrpm_va, 0xff, PAGE_SIZE * (1 << MSRPM_ALLOC_ORDER));
 397         msrpm_base = page_to_pfn(msrpm_pages) << PAGE_SHIFT;
 398
 399 #ifdef CONFIG_X86_64
 400         set_msr_interception(msrpm_va, MSR_GS_BASE, 1, 1);
 401         set_msr_interception(msrpm_va, MSR_FS_BASE, 1, 1);
 402         set_msr_interception(msrpm_va, MSR_KERNEL_GS_BASE, 1, 1);
 403         set_msr_interception(msrpm_va, MSR_LSTAR, 1, 1);
 404         set_msr_interception(msrpm_va, MSR_CSTAR, 1, 1);
 405         set_msr_interception(msrpm_va, MSR_SYSCALL_MASK, 1, 1);
 406 #endif
 407         set_msr_interception(msrpm_va, MSR_K6_STAR, 1, 1);
 408         set_msr_interception(msrpm_va, MSR_IA32_SYSENTER_CS, 1, 1);
 409         set_msr_interception(msrpm_va, MSR_IA32_SYSENTER_ESP, 1, 1);
 410         set_msr_interception(msrpm_va, MSR_IA32_SYSENTER_EIP, 1, 1);
 411
 412         for_each_online_cpu(cpu) {
 413                 r = svm_cpu_init(cpu);
 414                 if (r)
 415                         goto err_2;
 416         }
 417         return 0;
 418
 419 err_2:
 420         __free_pages(msrpm_pages, MSRPM_ALLOC_ORDER);
 421         msrpm_base = 0;
 422 err_1:
 423         __free_pages(iopm_pages, IOPM_ALLOC_ORDER);
 424         iopm_base = 0;
 425         return r;
 426 }
 427
 428 static __exit void svm_hardware_unsetup(void)
 429 {
 430         __free_pages(pfn_to_page(msrpm_base >> PAGE_SHIFT), MSRPM_ALLOC_ORDER);
 431         __free_pages(pfn_to_page(iopm_base >> PAGE_SHIFT), IOPM_ALLOC_ORDER);
 432         iopm_base = msrpm_base = 0;
 433 }
 434
 435 static void init_seg(struct vmcb_seg *seg)
 436 {
 437         seg->selector = 0;
 438         seg->attrib = SVM_SELECTOR_P_MASK | SVM_SELECTOR_S_MASK |
 439                 SVM_SELECTOR_WRITE_MASK; /* Read/Write Data Segment */
 440         seg->limit = 0xffff;
 441         seg->base = 0;
 442 }
 443
 444 static void init_sys_seg(struct vmcb_seg *seg, uint32_t type)
 445 {
 446         seg->selector = 0;
 447         seg->attrib = SVM_SELECTOR_P_MASK | type;
 448         seg->limit = 0xffff;
 449         seg->base = 0;
 450 }
 451
 452 static int svm_vcpu_setup(struct kvm_vcpu *vcpu)
 453 {
 454         return 0;
 455 }
 456
 457 static void init_vmcb(struct vmcb *vmcb)
 458 {
 459         struct vmcb_control_area *control = &vmcb->control;
 460         struct vmcb_save_area *save = &vmcb->save;
 461         u64 tsc;
 462
 463         control->intercept_cr_read =    INTERCEPT_CR0_MASK |
 464                                         INTERCEPT_CR3_MASK |
 465                                         INTERCEPT_CR4_MASK;
 466
 467         control->intercept_cr_write =   INTERCEPT_CR0_MASK |
 468                                         INTERCEPT_CR3_MASK |
 469                                         INTERCEPT_CR4_MASK;
 470
 471         control->intercept_dr_read =    INTERCEPT_DR0_MASK |
 472                                         INTERCEPT_DR1_MASK |
 473                                         INTERCEPT_DR2_MASK |
 474                                         INTERCEPT_DR3_MASK;
 475
 476         control->intercept_dr_write =   INTERCEPT_DR0_MASK |
 477                                         INTERCEPT_DR1_MASK |
 478                                         INTERCEPT_DR2_MASK |
 479                                         INTERCEPT_DR3_MASK |
 480                                         INTERCEPT_DR5_MASK |
 481                                         INTERCEPT_DR7_MASK;
 482
 483         control->intercept_exceptions = 1 << PF_VECTOR;
 484
 485
 486         control->intercept =    (1ULL << INTERCEPT_INTR) |
 487                                 (1ULL << INTERCEPT_NMI) |
 488                 /*
 489                  * selective cr0 intercept bug?
 490                  *      0:   0f 22 d8                mov    %eax,%cr3
 491                  *      3:   0f 20 c0                mov    %cr0,%eax
 492                  *      6:   0d 00 00 00 80          or     $0x80000000,%eax
 493                  *      b:   0f 22 c0                mov    %eax,%cr0
 494                  * set cr3 ->interception
 495                  * get cr0 ->interception
 496                  * set cr0 -> no interception
 497                  */
 498                 /*              (1ULL << INTERCEPT_SELECTIVE_CR0) | */
 499                                 (1ULL << INTERCEPT_CPUID) |
 500                                 (1ULL << INTERCEPT_HLT) |
 501                                 (1ULL << INTERCEPT_INVLPGA) |
 502                                 (1ULL << INTERCEPT_IOIO_PROT) |
 503                                 (1ULL << INTERCEPT_MSR_PROT) |
 504                                 (1ULL << INTERCEPT_TASK_SWITCH) |
 505                                 (1ULL << INTERCEPT_VMRUN) |
 506                                 (1ULL << INTERCEPT_VMMCALL) |
 507                                 (1ULL << INTERCEPT_VMLOAD) |
 508                                 (1ULL << INTERCEPT_VMSAVE) |
 509                                 (1ULL << INTERCEPT_STGI) |
 510                                 (1ULL << INTERCEPT_CLGI) |
 511                                 (1ULL << INTERCEPT_SKINIT);
 512
 513         control->iopm_base_pa = iopm_base;
 514         control->msrpm_base_pa = msrpm_base;
 515         rdtscll(tsc);
 516         control->tsc_offset = -tsc;
 517         control->int_ctl = V_INTR_MASKING_MASK;
 518
 519         init_seg(&save->es);
 520         init_seg(&save->ss);
 521         init_seg(&save->ds);
 522         init_seg(&save->fs);
 523         init_seg(&save->gs);
 524
 525         save->cs.selector = 0xf000;
 526         /* Executable/Readable Code Segment */
 527         save->cs.attrib = SVM_SELECTOR_READ_MASK | SVM_SELECTOR_P_MASK |
 528                 SVM_SELECTOR_S_MASK | SVM_SELECTOR_CODE_MASK;
 529         save->cs.limit = 0xffff;
 530         save->cs.base = 0xffff0000;
 531
 532         save->gdtr.limit = 0xffff;
 533         save->idtr.limit = 0xffff;
 534
 535         init_sys_seg(&save->ldtr, SEG_TYPE_LDT);
 536         init_sys_seg(&save->tr, SEG_TYPE_BUSY_TSS16);
 537
 538         save->efer = MSR_EFER_SVME_MASK;
 539
 540         save->dr6 = 0xffff0ff0;
 541         save->dr7 = 0x400;
 542         save->rflags = 2;
 543         save->rip = 0x0000fff0;
 544
 545         /*
 546          * cr0 val on cpu init should be 0x60000010, we enable cpu
 547          * cache by default. the orderly way is to enable cache in bios.
 548          */
 549         save->cr0 = 0x00000010 | CR0_PG_MASK;
 550         save->cr4 = CR4_PAE_MASK;
 551         /* rdx = ?? */
 552 }
 553
 554 static int svm_create_vcpu(struct kvm_vcpu *vcpu)
 555 {
 556         struct page *page;
 557         int r;
 558
 559         r = -ENOMEM;
 560         vcpu->svm = kzalloc(sizeof *vcpu->svm, GFP_KERNEL);
 561         if (!vcpu->svm)
 562                 goto out1;
 563         page = alloc_page(GFP_KERNEL);
 564         if (!page)
 565                 goto out2;
 566
 567         vcpu->svm->vmcb = page_address(page);
 568         memset(vcpu->svm->vmcb, 0, PAGE_SIZE);
 569         vcpu->svm->vmcb_pa = page_to_pfn(page) << PAGE_SHIFT;
 570         vcpu->svm->cr0 = 0x00000010;
 571         vcpu->svm->asid_generation = 0;
 572         memset(vcpu->svm->db_regs, 0, sizeof(vcpu->svm->db_regs));
 573         init_vmcb(vcpu->svm->vmcb);
 574
 575         fx_init(vcpu);
 576
 577         return 0;
 578
 579 out2:
 580         kfree(vcpu->svm);
 581 out1:
 582         return r;
 583 }
 584
 585 static void svm_free_vcpu(struct kvm_vcpu *vcpu)
 586 {
 587         if (!vcpu->svm)
 588                 return;
 589         if (vcpu->svm->vmcb)
 590                 __free_page(pfn_to_page(vcpu->svm->vmcb_pa >> PAGE_SHIFT));
 591         kfree(vcpu->svm);
 592 }
 593
 594 static struct kvm_vcpu *svm_vcpu_load(struct kvm_vcpu *vcpu)
 595 {
 596         get_cpu();
 597         return vcpu;
 598 }
 599
 600 static void svm_vcpu_put(struct kvm_vcpu *vcpu)
 601 {
 602         put_cpu();
 603 }
 604
 605 static void svm_cache_regs(struct kvm_vcpu *vcpu)
 606 {
 607         vcpu->regs[VCPU_REGS_RAX] = vcpu->svm->vmcb->save.rax;
 608         vcpu->regs[VCPU_REGS_RSP] = vcpu->svm->vmcb->save.rsp;
 609         vcpu->rip = vcpu->svm->vmcb->save.rip;
 610 }
 611
 612 static void svm_decache_regs(struct kvm_vcpu *vcpu)
 613 {
 614         vcpu->svm->vmcb->save.rax = vcpu->regs[VCPU_REGS_RAX];
 615         vcpu->svm->vmcb->save.rsp = vcpu->regs[VCPU_REGS_RSP];
 616         vcpu->svm->vmcb->save.rip = vcpu->rip;
 617 }
 618
 619 static unsigned long svm_get_rflags(struct kvm_vcpu *vcpu)
 620 {
 621         return vcpu->svm->vmcb->save.rflags;
 622 }
 623
 624 static void svm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
 625 {
 626         vcpu->svm->vmcb->save.rflags = rflags;
 627 }
 628
 629 static struct vmcb_seg *svm_seg(struct kvm_vcpu *vcpu, int seg)
 630 {
 631         struct vmcb_save_area *save = &vcpu->svm->vmcb->save;
 632
 633         switch (seg) {
 634         case VCPU_SREG_CS: return &save->cs;
 635         case VCPU_SREG_DS: return &save->ds;
 636         case VCPU_SREG_ES: return &save->es;
 637         case VCPU_SREG_FS: return &save->fs;
 638         case VCPU_SREG_GS: return &save->gs;
 639         case VCPU_SREG_SS: return &save->ss;
 640         case VCPU_SREG_TR: return &save->tr;
 641         case VCPU_SREG_LDTR: return &save->ldtr;
 642         }
 643         BUG();
 644         return 0;
 645 }
 646
 647 static u64 svm_get_segment_base(struct kvm_vcpu *vcpu, int seg)
 648 {
 649         struct vmcb_seg *s = svm_seg(vcpu, seg);
 650
 651         return s->base;
 652 }
 653
 654 static void svm_get_segment(struct kvm_vcpu *vcpu,
 655                             struct kvm_segment *var, int seg)
 656 {
 657         struct vmcb_seg *s = svm_seg(vcpu, seg);
 658
 659         var->base = s->base;
 660         var->limit = s->limit;
 661         var->selector = s->selector;
 662         var->type = s->attrib & SVM_SELECTOR_TYPE_MASK;
 663         var->s = (s->attrib >> SVM_SELECTOR_S_SHIFT) & 1;
 664         var->dpl = (s->attrib >> SVM_SELECTOR_DPL_SHIFT) & 3;
 665         var->present = (s->attrib >> SVM_SELECTOR_P_SHIFT) & 1;
 666         var->avl = (s->attrib >> SVM_SELECTOR_AVL_SHIFT) & 1;
 667         var->l = (s->attrib >> SVM_SELECTOR_L_SHIFT) & 1;
 668         var->db = (s->attrib >> SVM_SELECTOR_DB_SHIFT) & 1;
 669         var->g = (s->attrib >> SVM_SELECTOR_G_SHIFT) & 1;
 670         var->unusable = !var->present;
 671 }
 672
 673 static void svm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l)
 674 {
 675         struct vmcb_seg *s = svm_seg(vcpu, VCPU_SREG_CS);
 676
 677         *db = (s->attrib >> SVM_SELECTOR_DB_SHIFT) & 1;
 678         *l = (s->attrib >> SVM_SELECTOR_L_SHIFT) & 1;
 679 }
 680
 681 static void svm_get_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
 682 {
 683         dt->limit = vcpu->svm->vmcb->save.ldtr.limit;
 684         dt->base = vcpu->svm->vmcb->save.ldtr.base;
 685 }
 686
 687 static void svm_set_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
 688 {
 689         vcpu->svm->vmcb->save.ldtr.limit = dt->limit;
 690         vcpu->svm->vmcb->save.ldtr.base = dt->base ;
 691 }
 692
 693 static void svm_get_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
 694 {
 695         dt->limit = vcpu->svm->vmcb->save.gdtr.limit;
 696         dt->base = vcpu->svm->vmcb->save.gdtr.base;
 697 }
 698
 699 static void svm_set_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
 700 {
 701         vcpu->svm->vmcb->save.gdtr.limit = dt->limit;
 702         vcpu->svm->vmcb->save.gdtr.base = dt->base ;
 703 }
 704
 705 static void svm_decache_cr0_cr4_guest_bits(struct kvm_vcpu *vcpu)
 706 {
 707 }
 708
 709 static void svm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
 710 {
 711 #ifdef CONFIG_X86_64
 712         if (vcpu->shadow_efer & KVM_EFER_LME) {
 713                 if (!is_paging(vcpu) && (cr0 & CR0_PG_MASK)) {
 714                         vcpu->shadow_efer |= KVM_EFER_LMA;
 715                         vcpu->svm->vmcb->save.efer |= KVM_EFER_LMA | KVM_EFER_LME;
 716                 }
 717
 718                 if (is_paging(vcpu) && !(cr0 & CR0_PG_MASK) ) {
 719                         vcpu->shadow_efer &= ~KVM_EFER_LMA;
 720                         vcpu->svm->vmcb->save.efer &= ~(KVM_EFER_LMA | KVM_EFER_LME);
 721                 }
 722         }
 723 #endif
 724         vcpu->svm->cr0 = cr0;
 725         vcpu->svm->vmcb->save.cr0 = cr0 | CR0_PG_MASK;
 726         vcpu->cr0 = cr0;
 727 }
 728
 729 static void svm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
 730 {
 731        vcpu->cr4 = cr4;
 732        vcpu->svm->vmcb->save.cr4 = cr4 | CR4_PAE_MASK;
 733 }
 734
 735 static void svm_set_segment(struct kvm_vcpu *vcpu,
 736                             struct kvm_segment *var, int seg)
 737 {
 738         struct vmcb_seg *s = svm_seg(vcpu, seg);
 739
 740         s->base = var->base;
 741         s->limit = var->limit;
 742         s->selector = var->selector;
 743         if (var->unusable)
 744                 s->attrib = 0;
 745         else {
 746                 s->attrib = (var->type & SVM_SELECTOR_TYPE_MASK);
 747                 s->attrib |= (var->s & 1) << SVM_SELECTOR_S_SHIFT;
 748                 s->attrib |= (var->dpl & 3) << SVM_SELECTOR_DPL_SHIFT;
 749                 s->attrib |= (var->present & 1) << SVM_SELECTOR_P_SHIFT;
 750                 s->attrib |= (var->avl & 1) << SVM_SELECTOR_AVL_SHIFT;
 751                 s->attrib |= (var->l & 1) << SVM_SELECTOR_L_SHIFT;
 752                 s->attrib |= (var->db & 1) << SVM_SELECTOR_DB_SHIFT;
 753                 s->attrib |= (var->g & 1) << SVM_SELECTOR_G_SHIFT;
 754         }
 755         if (seg == VCPU_SREG_CS)
 756                 vcpu->svm->vmcb->save.cpl
 757                         = (vcpu->svm->vmcb->save.cs.attrib
 758                            >> SVM_SELECTOR_DPL_SHIFT) & 3;
 759
 760 }
 761
 762 /* FIXME:
 763
 764         vcpu->svm->vmcb->control.int_ctl &= ~V_TPR_MASK;
 765         vcpu->svm->vmcb->control.int_ctl |= (sregs->cr8 & V_TPR_MASK);
 766
 767 */
 768
 769 static int svm_guest_debug(struct kvm_vcpu *vcpu, struct kvm_debug_guest *dbg)
 770 {
 771         return -EOPNOTSUPP;
 772 }
 773
 774 static void load_host_msrs(struct kvm_vcpu *vcpu)
 775 {
 776         int i;
 777
 778         for ( i = 0; i < NR_HOST_SAVE_MSRS; i++)
 779                 wrmsrl(host_save_msrs[i], vcpu->svm->host_msrs[i]);
 780 }
 781
 782 static void save_host_msrs(struct kvm_vcpu *vcpu)
 783 {
 784         int i;
 785
 786         for ( i = 0; i < NR_HOST_SAVE_MSRS; i++)
 787                 rdmsrl(host_save_msrs[i], vcpu->svm->host_msrs[i]);
 788 }
 789
 790 static void new_asid(struct kvm_vcpu *vcpu, struct svm_cpu_data *svm_data)
 791 {
 792         if (svm_data->next_asid > svm_data->max_asid) {
 793                 ++svm_data->asid_generation;
 794                 svm_data->next_asid = 1;
 795                 vcpu->svm->vmcb->control.tlb_ctl = TLB_CONTROL_FLUSH_ALL_ASID;
 796         }
 797
 798         vcpu->cpu = svm_data->cpu;
 799         vcpu->svm->asid_generation = svm_data->asid_generation;
 800         vcpu->svm->vmcb->control.asid = svm_data->next_asid++;
 801 }
 802
 803 static void svm_invlpg(struct kvm_vcpu *vcpu, gva_t address)
 804 {
 805         invlpga(address, vcpu->svm->vmcb->control.asid); // is needed?
 806 }
 807
 808 static unsigned long svm_get_dr(struct kvm_vcpu *vcpu, int dr)
 809 {
 810         return vcpu->svm->db_regs[dr];
 811 }
 812
 813 static void svm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long value,
 814                        int *exception)
 815 {
 816         *exception = 0;
 817
 818         if (vcpu->svm->vmcb->save.dr7 & DR7_GD_MASK) {
 819                 vcpu->svm->vmcb->save.dr7 &= ~DR7_GD_MASK;
 820                 vcpu->svm->vmcb->save.dr6 |= DR6_BD_MASK;
 821                 *exception = DB_VECTOR;
 822                 return;
 823         }
 824
 825         switch (dr) {
 826         case 0 ... 3:
 827                 vcpu->svm->db_regs[dr] = value;
 828                 return;
 829         case 4 ... 5:
 830                 if (vcpu->cr4 & CR4_DE_MASK) {
 831                         *exception = UD_VECTOR;
 832                         return;
 833                 }
 834         case 7: {
 835                 if (value & ~((1ULL << 32) - 1)) {
 836                         *exception = GP_VECTOR;
 837                         return;
 838                 }
 839                 vcpu->svm->vmcb->save.dr7 = value;
 840                 return;
 841         }
 842         default:
 843                 printk(KERN_DEBUG "%s: unexpected dr %u\n",
 844                        __FUNCTION__, dr);
 845                 *exception = UD_VECTOR;
 846                 return;
 847         }
 848 }
 849
 850 static int pf_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 851 {
 852         u32 exit_int_info = vcpu->svm->vmcb->control.exit_int_info;
 853         u64 fault_address;
 854         u32 error_code;
 855         enum emulation_result er;
 856         int r;
 857
 858         if (is_external_interrupt(exit_int_info))
 859                 push_irq(vcpu, exit_int_info & SVM_EVTINJ_VEC_MASK);
 860
 861         spin_lock(&vcpu->kvm->lock);
 862
 863         fault_address  = vcpu->svm->vmcb->control.exit_info_2;
 864         error_code = vcpu->svm->vmcb->control.exit_info_1;
 865         r = kvm_mmu_page_fault(vcpu, fault_address, error_code);
 866         if (r < 0) {
 867                 spin_unlock(&vcpu->kvm->lock);
 868                 return r;
 869         }
 870         if (!r) {
 871                 spin_unlock(&vcpu->kvm->lock);
 872                 return 1;
 873         }
 874         er = emulate_instruction(vcpu, kvm_run, fault_address, error_code);
 875         spin_unlock(&vcpu->kvm->lock);
 876
 877         switch (er) {
 878         case EMULATE_DONE:
 879                 return 1;
 880         case EMULATE_DO_MMIO:
 881                 ++kvm_stat.mmio_exits;
 882                 kvm_run->exit_reason = KVM_EXIT_MMIO;
 883                 return 0;
 884         case EMULATE_FAIL:
 885                 vcpu_printf(vcpu, "%s: emulate fail\n", __FUNCTION__);
 886                 break;
 887         default:
 888                 BUG();
 889         }
 890
 891         kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
 892         return 0;
 893 }
 894
 895 static int io_get_override(struct kvm_vcpu *vcpu,
 896                           struct vmcb_seg **seg,
 897                           int *addr_override)
 898 {
 899         u8 inst[MAX_INST_SIZE];
 900         unsigned ins_length;
 901         gva_t rip;
 902         int i;
 903
 904         rip =  vcpu->svm->vmcb->save.rip;
 905         ins_length = vcpu->svm->next_rip - rip;
 906         rip += vcpu->svm->vmcb->save.cs.base;
 907
 908         if (ins_length > MAX_INST_SIZE)
 909                 printk(KERN_DEBUG
 910                        "%s: inst length err, cs base 0x%llx rip 0x%llx "
 911                        "next rip 0x%llx ins_length %u\n",
 912                        __FUNCTION__,
 913                        vcpu->svm->vmcb->save.cs.base,
 914                        vcpu->svm->vmcb->save.rip,
 915                        vcpu->svm->vmcb->control.exit_info_2,
 916                        ins_length);
 917
 918         if (kvm_read_guest(vcpu, rip, ins_length, inst) != ins_length)
 919                 /* #PF */
 920                 return 0;
 921
 922         *addr_override = 0;
 923         *seg = 0;
 924         for (i = 0; i < ins_length; i++)
 925                 switch (inst[i]) {
 926                 case 0xf0:
 927                 case 0xf2:
 928                 case 0xf3:
 929                 case 0x66:
 930                         continue;
 931                 case 0x67:
 932                         *addr_override = 1;
 933                         continue;
 934                 case 0x2e:
 935                         *seg = &vcpu->svm->vmcb->save.cs;
 936                         continue;
 937                 case 0x36:
 938                         *seg = &vcpu->svm->vmcb->save.ss;
 939                         continue;
 940                 case 0x3e:
 941                         *seg = &vcpu->svm->vmcb->save.ds;
 942                         continue;
 943                 case 0x26:
 944                         *seg = &vcpu->svm->vmcb->save.es;
 945                         continue;
 946                 case 0x64:
 947                         *seg = &vcpu->svm->vmcb->save.fs;
 948                         continue;
 949                 case 0x65:
 950                         *seg = &vcpu->svm->vmcb->save.gs;
 951                         continue;
 952                 default:
 953                         return 1;
 954                 }
 955         printk(KERN_DEBUG "%s: unexpected\n", __FUNCTION__);
 956         return 0;
 957 }
 958
 959 static unsigned long io_adress(struct kvm_vcpu *vcpu, int ins, u64 *address)
 960 {
 961         unsigned long addr_mask;
 962         unsigned long *reg;
 963         struct vmcb_seg *seg;
 964         int addr_override;
 965         struct vmcb_save_area *save_area = &vcpu->svm->vmcb->save;
 966         u16 cs_attrib = save_area->cs.attrib;
 967         unsigned addr_size = get_addr_size(vcpu);
 968
 969         if (!io_get_override(vcpu, &seg, &addr_override))
 970                 return 0;
 971
 972         if (addr_override)
 973                 addr_size = (addr_size == 2) ? 4: (addr_size >> 1);
 974
 975         if (ins) {
 976                 reg = &vcpu->regs[VCPU_REGS_RDI];
 977                 seg = &vcpu->svm->vmcb->save.es;
 978         } else {
 979                 reg = &vcpu->regs[VCPU_REGS_RSI];
 980                 seg = (seg) ? seg : &vcpu->svm->vmcb->save.ds;
 981         }
 982
 983         addr_mask = ~0ULL >> (64 - (addr_size * 8));
 984
 985         if ((cs_attrib & SVM_SELECTOR_L_MASK) &&
 986             !(vcpu->svm->vmcb->save.rflags & X86_EFLAGS_VM)) {
 987                 *address = (*reg & addr_mask);
 988                 return addr_mask;
 989         }
 990
 991         if (!(seg->attrib & SVM_SELECTOR_P_SHIFT)) {
 992                 svm_inject_gp(vcpu, 0);
 993                 return 0;
 994         }
 995
 996         *address = (*reg & addr_mask) + seg->base;
 997         return addr_mask;
 998 }
 999
1000 static int io_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
1001 {
1002         u32 io_info = vcpu->svm->vmcb->control.exit_info_1; //address size bug?
1003         int _in = io_info & SVM_IOIO_TYPE_MASK;
1004
1005         ++kvm_stat.io_exits;
1006
1007         vcpu->svm->next_rip = vcpu->svm->vmcb->control.exit_info_2;
1008
1009         kvm_run->exit_reason = KVM_EXIT_IO;
1010         kvm_run->io.port = io_info >> 16;
1011         kvm_run->io.direction = (_in) ? KVM_EXIT_IO_IN : KVM_EXIT_IO_OUT;
1012         kvm_run->io.size = ((io_info & SVM_IOIO_SIZE_MASK) >> SVM_IOIO_SIZE_SHIFT);
1013         kvm_run->io.string = (io_info & SVM_IOIO_STR_MASK) != 0;
1014         kvm_run->io.rep = (io_info & SVM_IOIO_REP_MASK) != 0;
1015
1016         if (kvm_run->io.string) {
1017                 unsigned addr_mask;
1018
1019                 addr_mask = io_adress(vcpu, _in, &kvm_run->io.address);
1020                 if (!addr_mask) {
1021                         printk(KERN_DEBUG "%s: get io address failed\n", __FUNCTION__);
1022                         return 1;
1023                 }
1024
1025                 if (kvm_run->io.rep) {
1026                         kvm_run->io.count = vcpu->regs[VCPU_REGS_RCX] & addr_mask;
1027                         kvm_run->io.string_down = (vcpu->svm->vmcb->save.rflags
1028                                                    & X86_EFLAGS_DF) != 0;
1029                 }
1030         } else {
1031                 kvm_run->io.value = vcpu->svm->vmcb->save.rax;
1032         }
1033         return 0;
1034 }
1035
1036
1037 static int nop_on_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
1038 {
1039         return 1;
1040 }
1041
1042 static int halt_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
1043 {
1044         vcpu->svm->next_rip = vcpu->svm->vmcb->save.rip + 1;
1045         skip_emulated_instruction(vcpu);
1046         if (vcpu->irq_summary)
1047                 return 1;
1048
1049         kvm_run->exit_reason = KVM_EXIT_HLT;
1050         ++kvm_stat.halt_exits;
1051         return 0;
1052 }
1053
1054 static int invalid_op_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
1055 {
1056         inject_ud(vcpu);
1057         return 1;
1058 }
1059
1060 static int task_switch_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
1061 {
1062         printk(KERN_DEBUG "%s: task swiche is unsupported\n", __FUNCTION__);
1063         kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
1064         return 0;
1065 }
1066
1067 static int cpuid_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
1068 {
1069         vcpu->svm->next_rip = vcpu->svm->vmcb->save.rip + 2;
1070         kvm_run->exit_reason = KVM_EXIT_CPUID;
1071         return 0;
1072 }
1073
1074 static int emulate_on_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
1075 {
1076         if (emulate_instruction(vcpu, 0, 0, 0) != EMULATE_DONE)
1077                 printk(KERN_ERR "%s: failed\n", __FUNCTION__);
1078         return 1;
1079 }
1080
1081 static int svm_get_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 *data)
1082 {
1083         switch (ecx) {
1084         case MSR_IA32_TIME_STAMP_COUNTER: {
1085                 u64 tsc;
1086
1087                 rdtscll(tsc);
1088                 *data = vcpu->svm->vmcb->control.tsc_offset + tsc;
1089                 break;
1090         }
1091         case MSR_K6_STAR:
1092                 *data = vcpu->svm->vmcb->save.star;
1093                 break;
1094 #ifdef CONFIG_X86_64
1095         case MSR_LSTAR:
1096                 *data = vcpu->svm->vmcb->save.lstar;
1097                 break;
1098         case MSR_CSTAR:
1099                 *data = vcpu->svm->vmcb->save.cstar;
1100                 break;
1101         case MSR_KERNEL_GS_BASE:
1102                 *data = vcpu->svm->vmcb->save.kernel_gs_base;
1103                 break;
1104         case MSR_SYSCALL_MASK:
1105                 *data = vcpu->svm->vmcb->save.sfmask;
1106                 break;
1107 #endif
1108         case MSR_IA32_SYSENTER_CS:
1109                 *data = vcpu->svm->vmcb->save.sysenter_cs;
1110                 break;
1111         case MSR_IA32_SYSENTER_EIP:
1112                 *data = vcpu->svm->vmcb->save.sysenter_eip;
1113                 break;
1114         case MSR_IA32_SYSENTER_ESP:
1115                 *data = vcpu->svm->vmcb->save.sysenter_esp;
1116                 break;
1117         default:
1118                 return kvm_get_msr_common(vcpu, ecx, data);
1119         }
1120         return 0;
1121 }
1122
1123 static int rdmsr_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
1124 {
1125         u32 ecx = vcpu->regs[VCPU_REGS_RCX];
1126         u64 data;
1127
1128         if (svm_get_msr(vcpu, ecx, &data))
1129                 svm_inject_gp(vcpu, 0);
1130         else {
1131                 vcpu->svm->vmcb->save.rax = data & 0xffffffff;
1132                 vcpu->regs[VCPU_REGS_RDX] = data >> 32;
1133                 vcpu->svm->next_rip = vcpu->svm->vmcb->save.rip + 2;
1134                 skip_emulated_instruction(vcpu);
1135         }
1136         return 1;
1137 }
1138
1139 static int svm_set_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 data)
1140 {
1141         switch (ecx) {
1142         case MSR_IA32_TIME_STAMP_COUNTER: {
1143                 u64 tsc;
1144
1145                 rdtscll(tsc);
1146                 vcpu->svm->vmcb->control.tsc_offset = data - tsc;
1147                 break;
1148         }
1149         case MSR_K6_STAR:
1150                 vcpu->svm->vmcb->save.star = data;
1151                 break;
1152 #ifdef CONFIG_X86_64_
1153         case MSR_LSTAR:
1154                 vcpu->svm->vmcb->save.lstar = data;
1155                 break;
1156         case MSR_CSTAR:
1157                 vcpu->svm->vmcb->save.cstar = data;
1158                 break;
1159         case MSR_KERNEL_GS_BASE:
1160                 vcpu->svm->vmcb->save.kernel_gs_base = data;
1161                 break;
1162         case MSR_SYSCALL_MASK:
1163                 vcpu->svm->vmcb->save.sfmask = data;
1164                 break;
1165 #endif
1166         case MSR_IA32_SYSENTER_CS:
1167                 vcpu->svm->vmcb->save.sysenter_cs = data;
1168                 break;
1169         case MSR_IA32_SYSENTER_EIP:
1170                 vcpu->svm->vmcb->save.sysenter_eip = data;
1171                 break;
1172         case MSR_IA32_SYSENTER_ESP:
1173                 vcpu->svm->vmcb->save.sysenter_esp = data;
1174                 break;
1175         default:
1176                 return kvm_set_msr_common(vcpu, ecx, data);
1177         }
1178         return 0;
1179 }
1180
1181 static int wrmsr_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
1182 {
1183         u32 ecx = vcpu->regs[VCPU_REGS_RCX];
1184         u64 data = (vcpu->svm->vmcb->save.rax & -1u)
1185                 | ((u64)(vcpu->regs[VCPU_REGS_RDX] & -1u) << 32);
1186         vcpu->svm->next_rip = vcpu->svm->vmcb->save.rip + 2;
1187         if (svm_set_msr(vcpu, ecx, data))
1188                 svm_inject_gp(vcpu, 0);
1189         else
1190                 skip_emulated_instruction(vcpu);
1191         return 1;
1192 }
1193
1194 static int msr_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
1195 {
1196         if (vcpu->svm->vmcb->control.exit_info_1)
1197                 return wrmsr_interception(vcpu, kvm_run);
1198         else
1199                 return rdmsr_interception(vcpu, kvm_run);
1200 }
1201
1202 static int interrupt_window_interception(struct kvm_vcpu *vcpu,
1203                                    struct kvm_run *kvm_run)
1204 {
1205         /*
1206          * If the user space waits to inject interrupts, exit as soon as
1207          * possible
1208          */
1209         if (kvm_run->request_interrupt_window &&
1210             !vcpu->irq_summary) {
1211                 ++kvm_stat.irq_window_exits;
1212                 kvm_run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN;
1213                 return 0;
1214         }
1215
1216         return 1;
1217 }
1218
1219 static int (*svm_exit_handlers[])(struct kvm_vcpu *vcpu,
1220                                       struct kvm_run *kvm_run) = {
1221         [SVM_EXIT_READ_CR0]                     = emulate_on_interception,
1222         [SVM_EXIT_READ_CR3]                     = emulate_on_interception,
1223         [SVM_EXIT_READ_CR4]                     = emulate_on_interception,
1224         /* for now: */
1225         [SVM_EXIT_WRITE_CR0]                    = emulate_on_interception,
1226         [SVM_EXIT_WRITE_CR3]                    = emulate_on_interception,
1227         [SVM_EXIT_WRITE_CR4]                    = emulate_on_interception,
1228         [SVM_EXIT_READ_DR0]                     = emulate_on_interception,
1229         [SVM_EXIT_READ_DR1]                     = emulate_on_interception,
1230         [SVM_EXIT_READ_DR2]                     = emulate_on_interception,
1231         [SVM_EXIT_READ_DR3]                     = emulate_on_interception,
1232         [SVM_EXIT_WRITE_DR0]                    = emulate_on_interception,
1233         [SVM_EXIT_WRITE_DR1]                    = emulate_on_interception,
1234         [SVM_EXIT_WRITE_DR2]                    = emulate_on_interception,
1235         [SVM_EXIT_WRITE_DR3]                    = emulate_on_interception,
1236         [SVM_EXIT_WRITE_DR5]                    = emulate_on_interception,
1237         [SVM_EXIT_WRITE_DR7]                    = emulate_on_interception,
1238         [SVM_EXIT_EXCP_BASE + PF_VECTOR]        = pf_interception,
1239         [SVM_EXIT_INTR]                         = nop_on_interception,
1240         [SVM_EXIT_NMI]                          = nop_on_interception,
1241         [SVM_EXIT_SMI]                          = nop_on_interception,
1242         [SVM_EXIT_INIT]                         = nop_on_interception,
1243         [SVM_EXIT_VINTR]                        = interrupt_window_interception,
1244         /* [SVM_EXIT_CR0_SEL_WRITE]             = emulate_on_interception, */
1245         [SVM_EXIT_CPUID]                        = cpuid_interception,
1246         [SVM_EXIT_HLT]                          = halt_interception,
1247         [SVM_EXIT_INVLPG]                       = emulate_on_interception,
1248         [SVM_EXIT_INVLPGA]                      = invalid_op_interception,
1249         [SVM_EXIT_IOIO]                         = io_interception,
1250         [SVM_EXIT_MSR]                          = msr_interception,
1251         [SVM_EXIT_TASK_SWITCH]                  = task_switch_interception,
1252         [SVM_EXIT_VMRUN]                        = invalid_op_interception,
1253         [SVM_EXIT_VMMCALL]                      = invalid_op_interception,
1254         [SVM_EXIT_VMLOAD]                       = invalid_op_interception,
1255         [SVM_EXIT_VMSAVE]                       = invalid_op_interception,
1256         [SVM_EXIT_STGI]                         = invalid_op_interception,
1257         [SVM_EXIT_CLGI]                         = invalid_op_interception,
1258         [SVM_EXIT_SKINIT]                       = invalid_op_interception,
1259 };
1260
1261
1262 static int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
1263 {
1264         u32 exit_code = vcpu->svm->vmcb->control.exit_code;
1265
1266         kvm_run->exit_type = KVM_EXIT_TYPE_VM_EXIT;
1267
1268         if (is_external_interrupt(vcpu->svm->vmcb->control.exit_int_info) &&
1269             exit_code != SVM_EXIT_EXCP_BASE + PF_VECTOR)
1270                 printk(KERN_ERR "%s: unexpected exit_ini_info 0x%x "
1271                        "exit_code 0x%x\n",
1272                        __FUNCTION__, vcpu->svm->vmcb->control.exit_int_info,
1273                        exit_code);
1274
1275         if (exit_code >= sizeof(svm_exit_handlers) / sizeof(*svm_exit_handlers)
1276             || svm_exit_handlers[exit_code] == 0) {
1277                 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
1278                 printk(KERN_ERR "%s: 0x%x @ 0x%llx cr0 0x%lx rflags 0x%llx\n",
1279                        __FUNCTION__,
1280                        exit_code,
1281                        vcpu->svm->vmcb->save.rip,
1282                        vcpu->cr0,
1283                        vcpu->svm->vmcb->save.rflags);
1284                 return 0;
1285         }
1286
1287         return svm_exit_handlers[exit_code](vcpu, kvm_run);
1288 }
1289
1290 static void reload_tss(struct kvm_vcpu *vcpu)
1291 {
1292         int cpu = raw_smp_processor_id();
1293
1294         struct svm_cpu_data *svm_data = per_cpu(svm_data, cpu);
1295         svm_data->tss_desc->type = 9; //available 32/64-bit TSS
1296         load_TR_desc();
1297 }
1298
1299 static void pre_svm_run(struct kvm_vcpu *vcpu)
1300 {
1301         int cpu = raw_smp_processor_id();
1302
1303         struct svm_cpu_data *svm_data = per_cpu(svm_data, cpu);
1304
1305         vcpu->svm->vmcb->control.tlb_ctl = TLB_CONTROL_DO_NOTHING;
1306         if (vcpu->cpu != cpu ||
1307             vcpu->svm->asid_generation != svm_data->asid_generation)
1308                 new_asid(vcpu, svm_data);
1309 }
1310
1311
1312 static inline void kvm_do_inject_irq(struct kvm_vcpu *vcpu)
1313 {
1314         struct vmcb_control_area *control;
1315
1316         control = &vcpu->svm->vmcb->control;
1317         control->int_vector = pop_irq(vcpu);
1318         control->int_ctl &= ~V_INTR_PRIO_MASK;
1319         control->int_ctl |= V_IRQ_MASK |
1320                 ((/*control->int_vector >> 4*/ 0xf) << V_INTR_PRIO_SHIFT);
1321 }
1322
1323 static void kvm_reput_irq(struct kvm_vcpu *vcpu)
1324 {
1325         struct vmcb_control_area *control = &vcpu->svm->vmcb->control;
1326
1327         if (control->int_ctl & V_IRQ_MASK) {
1328                 control->int_ctl &= ~V_IRQ_MASK;
1329                 push_irq(vcpu, control->int_vector);
1330         }
1331
1332         vcpu->interrupt_window_open =
1333                 !(control->int_state & SVM_INTERRUPT_SHADOW_MASK);
1334 }
1335
1336 static void do_interrupt_requests(struct kvm_vcpu *vcpu,
1337                                        struct kvm_run *kvm_run)
1338 {
1339         struct vmcb_control_area *control = &vcpu->svm->vmcb->control;
1340
1341         vcpu->interrupt_window_open =
1342                 (!(control->int_state & SVM_INTERRUPT_SHADOW_MASK) &&
1343                  (vcpu->svm->vmcb->save.rflags & X86_EFLAGS_IF));
1344
1345         if (vcpu->interrupt_window_open && vcpu->irq_summary)
1346                 /*
1347                  * If interrupts enabled, and not blocked by sti or mov ss. Good.
1348                  */
1349                 kvm_do_inject_irq(vcpu);
1350
1351         /*
1352          * Interrupts blocked.  Wait for unblock.
1353          */
1354         if (!vcpu->interrupt_window_open &&
1355             (vcpu->irq_summary || kvm_run->request_interrupt_window)) {
1356                 control->intercept |= 1ULL << INTERCEPT_VINTR;
1357         } else
1358                 control->intercept &= ~(1ULL << INTERCEPT_VINTR);
1359 }
1360
1361 static void post_kvm_run_save(struct kvm_vcpu *vcpu,
1362                               struct kvm_run *kvm_run)
1363 {
1364         kvm_run->ready_for_interrupt_injection = (vcpu->interrupt_window_open &&
1365                                                   vcpu->irq_summary == 0);
1366         kvm_run->if_flag = (vcpu->svm->vmcb->save.rflags & X86_EFLAGS_IF) != 0;
1367         kvm_run->cr8 = vcpu->cr8;
1368         kvm_run->apic_base = vcpu->apic_base;
1369 }
1370
1371 /*
1372  * Check if userspace requested an interrupt window, and that the
1373  * interrupt window is open.
1374  *
1375  * No need to exit to userspace if we already have an interrupt queued.
1376  */
1377 static int dm_request_for_irq_injection(struct kvm_vcpu *vcpu,
1378                                           struct kvm_run *kvm_run)
1379 {
1380         return (!vcpu->irq_summary &&
1381                 kvm_run->request_interrupt_window &&
1382                 vcpu->interrupt_window_open &&
1383                 (vcpu->svm->vmcb->save.rflags & X86_EFLAGS_IF));
1384 }
1385
1386 static void save_db_regs(unsigned long *db_regs)
1387 {
1388         asm volatile ("mov %%dr0, %0" : "=r"(db_regs[0]));
1389         asm volatile ("mov %%dr1, %0" : "=r"(db_regs[1]));
1390         asm volatile ("mov %%dr2, %0" : "=r"(db_regs[2]));
1391         asm volatile ("mov %%dr3, %0" : "=r"(db_regs[3]));
1392 }
1393
1394 static void load_db_regs(unsigned long *db_regs)
1395 {
1396         asm volatile ("mov %0, %%dr0" : : "r"(db_regs[0]));
1397         asm volatile ("mov %0, %%dr1" : : "r"(db_regs[1]));
1398         asm volatile ("mov %0, %%dr2" : : "r"(db_regs[2]));
1399         asm volatile ("mov %0, %%dr3" : : "r"(db_regs[3]));
1400 }
1401
1402 static int svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
1403 {
1404         u16 fs_selector;
1405         u16 gs_selector;
1406         u16 ldt_selector;
1407         int r;
1408
1409 again:
1410         if (!vcpu->mmio_read_completed)
1411                 do_interrupt_requests(vcpu, kvm_run);
1412
1413         clgi();
1414
1415         pre_svm_run(vcpu);
1416
1417         save_host_msrs(vcpu);
1418         fs_selector = read_fs();
1419         gs_selector = read_gs();
1420         ldt_selector = read_ldt();
1421         vcpu->svm->host_cr2 = kvm_read_cr2();
1422         vcpu->svm->host_dr6 = read_dr6();
1423         vcpu->svm->host_dr7 = read_dr7();
1424         vcpu->svm->vmcb->save.cr2 = vcpu->cr2;
1425
1426         if (vcpu->svm->vmcb->save.dr7 & 0xff) {
1427                 write_dr7(0);
1428                 save_db_regs(vcpu->svm->host_db_regs);
1429                 load_db_regs(vcpu->svm->db_regs);
1430         }
1431
1432         fx_save(vcpu->host_fx_image);
1433         fx_restore(vcpu->guest_fx_image);
1434
1435         asm volatile (
1436 #ifdef CONFIG_X86_64
1437                 "push %%rbx; push %%rcx; push %%rdx;"
1438                 "push %%rsi; push %%rdi; push %%rbp;"
1439                 "push %%r8;  push %%r9;  push %%r10; push %%r11;"
1440                 "push %%r12; push %%r13; push %%r14; push %%r15;"
1441 #else
1442                 "push %%ebx; push %%ecx; push %%edx;"
1443                 "push %%esi; push %%edi; push %%ebp;"
1444 #endif
1445
1446 #ifdef CONFIG_X86_64
1447                 "mov %c[rbx](%[vcpu]), %%rbx \n\t"
1448                 "mov %c[rcx](%[vcpu]), %%rcx \n\t"
1449                 "mov %c[rdx](%[vcpu]), %%rdx \n\t"
1450                 "mov %c[rsi](%[vcpu]), %%rsi \n\t"
1451                 "mov %c[rdi](%[vcpu]), %%rdi \n\t"
1452                 "mov %c[rbp](%[vcpu]), %%rbp \n\t"
1453                 "mov %c[r8](%[vcpu]),  %%r8  \n\t"
1454                 "mov %c[r9](%[vcpu]),  %%r9  \n\t"
1455                 "mov %c[r10](%[vcpu]), %%r10 \n\t"
1456                 "mov %c[r11](%[vcpu]), %%r11 \n\t"
1457                 "mov %c[r12](%[vcpu]), %%r12 \n\t"
1458                 "mov %c[r13](%[vcpu]), %%r13 \n\t"
1459                 "mov %c[r14](%[vcpu]), %%r14 \n\t"
1460                 "mov %c[r15](%[vcpu]), %%r15 \n\t"
1461 #else
1462                 "mov %c[rbx](%[vcpu]), %%ebx \n\t"
1463                 "mov %c[rcx](%[vcpu]), %%ecx \n\t"
1464                 "mov %c[rdx](%[vcpu]), %%edx \n\t"
1465                 "mov %c[rsi](%[vcpu]), %%esi \n\t"
1466                 "mov %c[rdi](%[vcpu]), %%edi \n\t"
1467                 "mov %c[rbp](%[vcpu]), %%ebp \n\t"
1468 #endif
1469
1470 #ifdef CONFIG_X86_64
1471                 /* Enter guest mode */
1472                 "push %%rax \n\t"
1473                 "mov %c[svm](%[vcpu]), %%rax \n\t"
1474                 "mov %c[vmcb](%%rax), %%rax \n\t"
1475                 SVM_VMLOAD "\n\t"
1476                 SVM_VMRUN "\n\t"
1477                 SVM_VMSAVE "\n\t"
1478                 "pop %%rax \n\t"
1479 #else
1480                 /* Enter guest mode */
1481                 "push %%eax \n\t"
1482                 "mov %c[svm](%[vcpu]), %%eax \n\t"
1483                 "mov %c[vmcb](%%eax), %%eax \n\t"
1484                 SVM_VMLOAD "\n\t"
1485                 SVM_VMRUN "\n\t"
1486                 SVM_VMSAVE "\n\t"
1487                 "pop %%eax \n\t"
1488 #endif
1489
1490                 /* Save guest registers, load host registers */
1491 #ifdef CONFIG_X86_64
1492                 "mov %%rbx, %c[rbx](%[vcpu]) \n\t"
1493                 "mov %%rcx, %c[rcx](%[vcpu]) \n\t"
1494                 "mov %%rdx, %c[rdx](%[vcpu]) \n\t"
1495                 "mov %%rsi, %c[rsi](%[vcpu]) \n\t"
1496                 "mov %%rdi, %c[rdi](%[vcpu]) \n\t"
1497                 "mov %%rbp, %c[rbp](%[vcpu]) \n\t"
1498                 "mov %%r8,  %c[r8](%[vcpu]) \n\t"
1499                 "mov %%r9,  %c[r9](%[vcpu]) \n\t"
1500                 "mov %%r10, %c[r10](%[vcpu]) \n\t"
1501                 "mov %%r11, %c[r11](%[vcpu]) \n\t"
1502                 "mov %%r12, %c[r12](%[vcpu]) \n\t"
1503                 "mov %%r13, %c[r13](%[vcpu]) \n\t"
1504                 "mov %%r14, %c[r14](%[vcpu]) \n\t"
1505                 "mov %%r15, %c[r15](%[vcpu]) \n\t"
1506
1507                 "pop  %%r15; pop  %%r14; pop  %%r13; pop  %%r12;"
1508                 "pop  %%r11; pop  %%r10; pop  %%r9;  pop  %%r8;"
1509                 "pop  %%rbp; pop  %%rdi; pop  %%rsi;"
1510                 "pop  %%rdx; pop  %%rcx; pop  %%rbx; \n\t"
1511 #else
1512                 "mov %%ebx, %c[rbx](%[vcpu]) \n\t"
1513                 "mov %%ecx, %c[rcx](%[vcpu]) \n\t"
1514                 "mov %%edx, %c[rdx](%[vcpu]) \n\t"
1515                 "mov %%esi, %c[rsi](%[vcpu]) \n\t"
1516                 "mov %%edi, %c[rdi](%[vcpu]) \n\t"
1517                 "mov %%ebp, %c[rbp](%[vcpu]) \n\t"
1518
1519                 "pop  %%ebp; pop  %%edi; pop  %%esi;"
1520                 "pop  %%edx; pop  %%ecx; pop  %%ebx; \n\t"
1521 #endif
1522                 :
1523                 : [vcpu]"a"(vcpu),
1524                   [svm]"i"(offsetof(struct kvm_vcpu, svm)),
1525                   [vmcb]"i"(offsetof(struct vcpu_svm, vmcb_pa)),
1526                   [rbx]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RBX])),
1527                   [rcx]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RCX])),
1528                   [rdx]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RDX])),
1529                   [rsi]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RSI])),
1530                   [rdi]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RDI])),
1531                   [rbp]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RBP]))
1532 #ifdef CONFIG_X86_64
1533                   ,[r8 ]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R8 ])),
1534                   [r9 ]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R9 ])),
1535                   [r10]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R10])),
1536                   [r11]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R11])),
1537                   [r12]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R12])),
1538                   [r13]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R13])),
1539                   [r14]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R14])),
1540                   [r15]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R15]))
1541 #endif
1542                 : "cc", "memory" );
1543
1544         fx_save(vcpu->guest_fx_image);
1545         fx_restore(vcpu->host_fx_image);
1546
1547         if ((vcpu->svm->vmcb->save.dr7 & 0xff))
1548                 load_db_regs(vcpu->svm->host_db_regs);
1549
1550         vcpu->cr2 = vcpu->svm->vmcb->save.cr2;
1551
1552         write_dr6(vcpu->svm->host_dr6);
1553         write_dr7(vcpu->svm->host_dr7);
1554         kvm_write_cr2(vcpu->svm->host_cr2);
1555
1556         load_fs(fs_selector);
1557         load_gs(gs_selector);
1558         load_ldt(ldt_selector);
1559         load_host_msrs(vcpu);
1560
1561         reload_tss(vcpu);
1562
1563         /*
1564          * Profile KVM exit RIPs:
1565          */
1566         if (unlikely(prof_on == KVM_PROFILING))
1567                 profile_hit(KVM_PROFILING,
1568                         (void *)(unsigned long)vcpu->svm->vmcb->save.rip);
1569
1570         stgi();
1571
1572         kvm_reput_irq(vcpu);
1573
1574         vcpu->svm->next_rip = 0;
1575
1576         if (vcpu->svm->vmcb->control.exit_code == SVM_EXIT_ERR) {
1577                 kvm_run->exit_type = KVM_EXIT_TYPE_FAIL_ENTRY;
1578                 kvm_run->exit_reason = vcpu->svm->vmcb->control.exit_code;
1579                 post_kvm_run_save(vcpu, kvm_run);
1580                 return 0;
1581         }
1582
1583         r = handle_exit(vcpu, kvm_run);
1584         if (r > 0) {
1585                 if (signal_pending(current)) {
1586                         ++kvm_stat.signal_exits;
1587                         post_kvm_run_save(vcpu, kvm_run);
1588                         return -EINTR;
1589                 }
1590
1591                 if (dm_request_for_irq_injection(vcpu, kvm_run)) {
1592                         ++kvm_stat.request_irq_exits;
1593                         post_kvm_run_save(vcpu, kvm_run);
1594                         return -EINTR;
1595                 }
1596                 kvm_resched(vcpu);
1597                 goto again;
1598         }
1599         post_kvm_run_save(vcpu, kvm_run);
1600         return r;
1601 }
1602
1603 static void svm_flush_tlb(struct kvm_vcpu *vcpu)
1604 {
1605         force_new_asid(vcpu);
1606 }
1607
1608 static void svm_set_cr3(struct kvm_vcpu *vcpu, unsigned long root)
1609 {
1610         vcpu->svm->vmcb->save.cr3 = root;
1611         force_new_asid(vcpu);
1612 }
1613
1614 static void svm_inject_page_fault(struct kvm_vcpu *vcpu,
1615                                   unsigned long  addr,
1616                                   uint32_t err_code)
1617 {
1618         uint32_t exit_int_info = vcpu->svm->vmcb->control.exit_int_info;
1619
1620         ++kvm_stat.pf_guest;
1621
1622         if (is_page_fault(exit_int_info)) {
1623
1624                 vcpu->svm->vmcb->control.event_inj_err = 0;
1625                 vcpu->svm->vmcb->control.event_inj =    SVM_EVTINJ_VALID |
1626                                                         SVM_EVTINJ_VALID_ERR |
1627                                                         SVM_EVTINJ_TYPE_EXEPT |
1628                                                         DF_VECTOR;
1629                 return;
1630         }
1631         vcpu->cr2 = addr;
1632         vcpu->svm->vmcb->save.cr2 = addr;
1633         vcpu->svm->vmcb->control.event_inj =    SVM_EVTINJ_VALID |
1634                                                 SVM_EVTINJ_VALID_ERR |
1635                                                 SVM_EVTINJ_TYPE_EXEPT |
1636                                                 PF_VECTOR;
1637         vcpu->svm->vmcb->control.event_inj_err = err_code;
1638 }
1639
1640
1641 static int is_disabled(void)
1642 {
1643         return 0;
1644 }
1645
1646 static struct kvm_arch_ops svm_arch_ops = {
1647         .cpu_has_kvm_support = has_svm,
1648         .disabled_by_bios = is_disabled,
1649         .hardware_setup = svm_hardware_setup,
1650         .hardware_unsetup = svm_hardware_unsetup,
1651         .hardware_enable = svm_hardware_enable,
1652         .hardware_disable = svm_hardware_disable,
1653
1654         .vcpu_create = svm_create_vcpu,
1655         .vcpu_free = svm_free_vcpu,
1656
1657         .vcpu_load = svm_vcpu_load,
1658         .vcpu_put = svm_vcpu_put,
1659
1660         .set_guest_debug = svm_guest_debug,
1661         .get_msr = svm_get_msr,
1662         .set_msr = svm_set_msr,
1663         .get_segment_base = svm_get_segment_base,
1664         .get_segment = svm_get_segment,
1665         .set_segment = svm_set_segment,
1666         .get_cs_db_l_bits = svm_get_cs_db_l_bits,
1667         .decache_cr0_cr4_guest_bits = svm_decache_cr0_cr4_guest_bits,
1668         .set_cr0 = svm_set_cr0,
1669         .set_cr0_no_modeswitch = svm_set_cr0,
1670         .set_cr3 = svm_set_cr3,
1671         .set_cr4 = svm_set_cr4,
1672         .set_efer = svm_set_efer,
1673         .get_idt = svm_get_idt,
1674         .set_idt = svm_set_idt,
1675         .get_gdt = svm_get_gdt,
1676         .set_gdt = svm_set_gdt,
1677         .get_dr = svm_get_dr,
1678         .set_dr = svm_set_dr,
1679         .cache_regs = svm_cache_regs,
1680         .decache_regs = svm_decache_regs,
1681         .get_rflags = svm_get_rflags,
1682         .set_rflags = svm_set_rflags,
1683
1684         .invlpg = svm_invlpg,
1685         .tlb_flush = svm_flush_tlb,
1686         .inject_page_fault = svm_inject_page_fault,
1687
1688         .inject_gp = svm_inject_gp,
1689
1690         .run = svm_vcpu_run,
1691         .skip_emulated_instruction = skip_emulated_instruction,
1692         .vcpu_setup = svm_vcpu_setup,
1693 };
1694
1695 static int __init svm_init(void)
1696 {
1697         return kvm_init_arch(&svm_arch_ops, THIS_MODULE);
1698 }
1699
1700 static void __exit svm_exit(void)
1701 {
1702         kvm_exit_arch();
1703 }
1704
1705 module_init(svm_init)
1706 module_exit(svm_exit)