err.no Git - linux-2.6/blob - 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 "kvm_svm.h"
  18 #include "x86_emulate.h"
  19
  20 #include <linux/module.h>
  21 #include <linux/kernel.h>
  22 #include <linux/vmalloc.h>
  23 #include <linux/highmem.h>
  24 #include <linux/profile.h>
  25 #include <linux/sched.h>
  26
  27 #include <asm/desc.h>
  28
  29 MODULE_AUTHOR("Qumranet");
  30 MODULE_LICENSE("GPL");
  31
  32 #define IOPM_ALLOC_ORDER 2
  33 #define MSRPM_ALLOC_ORDER 1
  34
  35 #define DB_VECTOR 1
  36 #define UD_VECTOR 6
  37 #define GP_VECTOR 13
  38
  39 #define DR7_GD_MASK (1 << 13)
  40 #define DR6_BD_MASK (1 << 13)
  41
  42 #define SEG_TYPE_LDT 2
  43 #define SEG_TYPE_BUSY_TSS16 3
  44
  45 #define KVM_EFER_LMA (1 << 10)
  46 #define KVM_EFER_LME (1 << 8)
  47
  48 #define SVM_FEATURE_NPT  (1 << 0)
  49 #define SVM_FEATURE_LBRV (1 << 1)
  50 #define SVM_DEATURE_SVML (1 << 2)
  51
  52 static inline struct vcpu_svm *to_svm(struct kvm_vcpu *vcpu)
  53 {
  54         return container_of(vcpu, struct vcpu_svm, vcpu);
  55 }
  56
  57 unsigned long iopm_base;
  58 unsigned long msrpm_base;
  59
  60 struct kvm_ldttss_desc {
  61         u16 limit0;
  62         u16 base0;
  63         unsigned base1 : 8, type : 5, dpl : 2, p : 1;
  64         unsigned limit1 : 4, zero0 : 3, g : 1, base2 : 8;
  65         u32 base3;
  66         u32 zero1;
  67 } __attribute__((packed));
  68
  69 struct svm_cpu_data {
  70         int cpu;
  71
  72         u64 asid_generation;
  73         u32 max_asid;
  74         u32 next_asid;
  75         struct kvm_ldttss_desc *tss_desc;
  76
  77         struct page *save_area;
  78 };
  79
  80 static DEFINE_PER_CPU(struct svm_cpu_data *, svm_data);
  81 static uint32_t svm_features;
  82
  83 struct svm_init_data {
  84         int cpu;
  85         int r;
  86 };
  87
  88 static u32 msrpm_ranges[] = {0, 0xc0000000, 0xc0010000};
  89
  90 #define NUM_MSR_MAPS ARRAY_SIZE(msrpm_ranges)
  91 #define MSRS_RANGE_SIZE 2048
  92 #define MSRS_IN_RANGE (MSRS_RANGE_SIZE * 8 / 2)
  93
  94 #define MAX_INST_SIZE 15
  95
  96 static inline u32 svm_has(u32 feat)
  97 {
  98         return svm_features & feat;
  99 }
 100
 101 static inline u8 pop_irq(struct kvm_vcpu *vcpu)
 102 {
 103         int word_index = __ffs(vcpu->irq_summary);
 104         int bit_index = __ffs(vcpu->irq_pending[word_index]);
 105         int irq = word_index * BITS_PER_LONG + bit_index;
 106
 107         clear_bit(bit_index, &vcpu->irq_pending[word_index]);
 108         if (!vcpu->irq_pending[word_index])
 109                 clear_bit(word_index, &vcpu->irq_summary);
 110         return irq;
 111 }
 112
 113 static inline void push_irq(struct kvm_vcpu *vcpu, u8 irq)
 114 {
 115         set_bit(irq, vcpu->irq_pending);
 116         set_bit(irq / BITS_PER_LONG, &vcpu->irq_summary);
 117 }
 118
 119 static inline void clgi(void)
 120 {
 121         asm volatile (SVM_CLGI);
 122 }
 123
 124 static inline void stgi(void)
 125 {
 126         asm volatile (SVM_STGI);
 127 }
 128
 129 static inline void invlpga(unsigned long addr, u32 asid)
 130 {
 131         asm volatile (SVM_INVLPGA :: "a"(addr), "c"(asid));
 132 }
 133
 134 static inline unsigned long kvm_read_cr2(void)
 135 {
 136         unsigned long cr2;
 137
 138         asm volatile ("mov %%cr2, %0" : "=r" (cr2));
 139         return cr2;
 140 }
 141
 142 static inline void kvm_write_cr2(unsigned long val)
 143 {
 144         asm volatile ("mov %0, %%cr2" :: "r" (val));
 145 }
 146
 147 static inline unsigned long read_dr6(void)
 148 {
 149         unsigned long dr6;
 150
 151         asm volatile ("mov %%dr6, %0" : "=r" (dr6));
 152         return dr6;
 153 }
 154
 155 static inline void write_dr6(unsigned long val)
 156 {
 157         asm volatile ("mov %0, %%dr6" :: "r" (val));
 158 }
 159
 160 static inline unsigned long read_dr7(void)
 161 {
 162         unsigned long dr7;
 163
 164         asm volatile ("mov %%dr7, %0" : "=r" (dr7));
 165         return dr7;
 166 }
 167
 168 static inline void write_dr7(unsigned long val)
 169 {
 170         asm volatile ("mov %0, %%dr7" :: "r" (val));
 171 }
 172
 173 static inline void force_new_asid(struct kvm_vcpu *vcpu)
 174 {
 175         to_svm(vcpu)->asid_generation--;
 176 }
 177
 178 static inline void flush_guest_tlb(struct kvm_vcpu *vcpu)
 179 {
 180         force_new_asid(vcpu);
 181 }
 182
 183 static void svm_set_efer(struct kvm_vcpu *vcpu, u64 efer)
 184 {
 185         if (!(efer & KVM_EFER_LMA))
 186                 efer &= ~KVM_EFER_LME;
 187
 188         to_svm(vcpu)->vmcb->save.efer = efer | MSR_EFER_SVME_MASK;
 189         vcpu->shadow_efer = efer;
 190 }
 191
 192 static void svm_inject_gp(struct kvm_vcpu *vcpu, unsigned error_code)
 193 {
 194         struct vcpu_svm *svm = to_svm(vcpu);
 195
 196         svm->vmcb->control.event_inj =          SVM_EVTINJ_VALID |
 197                                                 SVM_EVTINJ_VALID_ERR |
 198                                                 SVM_EVTINJ_TYPE_EXEPT |
 199                                                 GP_VECTOR;
 200         svm->vmcb->control.event_inj_err = error_code;
 201 }
 202
 203 static void inject_ud(struct kvm_vcpu *vcpu)
 204 {
 205         to_svm(vcpu)->vmcb->control.event_inj = SVM_EVTINJ_VALID |
 206                                                 SVM_EVTINJ_TYPE_EXEPT |
 207                                                 UD_VECTOR;
 208 }
 209
 210 static int is_page_fault(uint32_t info)
 211 {
 212         info &= SVM_EVTINJ_VEC_MASK | SVM_EVTINJ_TYPE_MASK | SVM_EVTINJ_VALID;
 213         return info == (PF_VECTOR | SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_EXEPT);
 214 }
 215
 216 static int is_external_interrupt(u32 info)
 217 {
 218         info &= SVM_EVTINJ_TYPE_MASK | SVM_EVTINJ_VALID;
 219         return info == (SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_INTR);
 220 }
 221
 222 static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
 223 {
 224         struct vcpu_svm *svm = to_svm(vcpu);
 225
 226         if (!svm->next_rip) {
 227                 printk(KERN_DEBUG "%s: NOP\n", __FUNCTION__);
 228                 return;
 229         }
 230         if (svm->next_rip - svm->vmcb->save.rip > MAX_INST_SIZE) {
 231                 printk(KERN_ERR "%s: ip 0x%llx next 0x%llx\n",
 232                        __FUNCTION__,
 233                        svm->vmcb->save.rip,
 234                        svm->next_rip);
 235         }
 236
 237         vcpu->rip = svm->vmcb->save.rip = svm->next_rip;
 238         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()) = NULL;
 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         svm_features = cpuid_edx(SVM_CPUID_FUNC);
 312
 313         asm volatile ( "sgdt %0" : "=m"(gdt_descr) );
 314         gdt = (struct desc_struct *)gdt_descr.address;
 315         svm_data->tss_desc = (struct kvm_ldttss_desc *)(gdt + GDT_ENTRY_TSS);
 316
 317         rdmsrl(MSR_EFER, efer);
 318         wrmsrl(MSR_EFER, efer | MSR_EFER_SVME_MASK);
 319
 320         wrmsrl(MSR_VM_HSAVE_PA,
 321                page_to_pfn(svm_data->save_area) << PAGE_SHIFT);
 322 }
 323
 324 static int svm_cpu_init(int cpu)
 325 {
 326         struct svm_cpu_data *svm_data;
 327         int r;
 328
 329         svm_data = kzalloc(sizeof(struct svm_cpu_data), GFP_KERNEL);
 330         if (!svm_data)
 331                 return -ENOMEM;
 332         svm_data->cpu = cpu;
 333         svm_data->save_area = alloc_page(GFP_KERNEL);
 334         r = -ENOMEM;
 335         if (!svm_data->save_area)
 336                 goto err_1;
 337
 338         per_cpu(svm_data, cpu) = svm_data;
 339
 340         return 0;
 341
 342 err_1:
 343         kfree(svm_data);
 344         return r;
 345
 346 }
 347
 348 static void set_msr_interception(u32 *msrpm, unsigned msr,
 349                                  int read, int write)
 350 {
 351         int i;
 352
 353         for (i = 0; i < NUM_MSR_MAPS; i++) {
 354                 if (msr >= msrpm_ranges[i] &&
 355                     msr < msrpm_ranges[i] + MSRS_IN_RANGE) {
 356                         u32 msr_offset = (i * MSRS_IN_RANGE + msr -
 357                                           msrpm_ranges[i]) * 2;
 358
 359                         u32 *base = msrpm + (msr_offset / 32);
 360                         u32 msr_shift = msr_offset % 32;
 361                         u32 mask = ((write) ? 0 : 2) | ((read) ? 0 : 1);
 362                         *base = (*base & ~(0x3 << msr_shift)) |
 363                                 (mask << msr_shift);
 364                         return;
 365                 }
 366         }
 367         BUG();
 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 *iopm_va, *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
 385         iopm_va = page_address(iopm_pages);
 386         memset(iopm_va, 0xff, PAGE_SIZE * (1 << IOPM_ALLOC_ORDER));
 387         clear_bit(0x80, iopm_va); /* allow direct access to PC debug port */
 388         iopm_base = page_to_pfn(iopm_pages) << PAGE_SHIFT;
 389
 390
 391         msrpm_pages = alloc_pages(GFP_KERNEL, MSRPM_ALLOC_ORDER);
 392
 393         r = -ENOMEM;
 394         if (!msrpm_pages)
 395                 goto err_1;
 396
 397         msrpm_va = page_address(msrpm_pages);
 398         memset(msrpm_va, 0xff, PAGE_SIZE * (1 << MSRPM_ALLOC_ORDER));
 399         msrpm_base = page_to_pfn(msrpm_pages) << PAGE_SHIFT;
 400
 401 #ifdef CONFIG_X86_64
 402         set_msr_interception(msrpm_va, MSR_GS_BASE, 1, 1);
 403         set_msr_interception(msrpm_va, MSR_FS_BASE, 1, 1);
 404         set_msr_interception(msrpm_va, MSR_KERNEL_GS_BASE, 1, 1);
 405         set_msr_interception(msrpm_va, MSR_LSTAR, 1, 1);
 406         set_msr_interception(msrpm_va, MSR_CSTAR, 1, 1);
 407         set_msr_interception(msrpm_va, MSR_SYSCALL_MASK, 1, 1);
 408 #endif
 409         set_msr_interception(msrpm_va, MSR_K6_STAR, 1, 1);
 410         set_msr_interception(msrpm_va, MSR_IA32_SYSENTER_CS, 1, 1);
 411         set_msr_interception(msrpm_va, MSR_IA32_SYSENTER_ESP, 1, 1);
 412         set_msr_interception(msrpm_va, MSR_IA32_SYSENTER_EIP, 1, 1);
 413
 414         for_each_online_cpu(cpu) {
 415                 r = svm_cpu_init(cpu);
 416                 if (r)
 417                         goto err_2;
 418         }
 419         return 0;
 420
 421 err_2:
 422         __free_pages(msrpm_pages, MSRPM_ALLOC_ORDER);
 423         msrpm_base = 0;
 424 err_1:
 425         __free_pages(iopm_pages, IOPM_ALLOC_ORDER);
 426         iopm_base = 0;
 427         return r;
 428 }
 429
 430 static __exit void svm_hardware_unsetup(void)
 431 {
 432         __free_pages(pfn_to_page(msrpm_base >> PAGE_SHIFT), MSRPM_ALLOC_ORDER);
 433         __free_pages(pfn_to_page(iopm_base >> PAGE_SHIFT), IOPM_ALLOC_ORDER);
 434         iopm_base = msrpm_base = 0;
 435 }
 436
 437 static void init_seg(struct vmcb_seg *seg)
 438 {
 439         seg->selector = 0;
 440         seg->attrib = SVM_SELECTOR_P_MASK | SVM_SELECTOR_S_MASK |
 441                 SVM_SELECTOR_WRITE_MASK; /* Read/Write Data Segment */
 442         seg->limit = 0xffff;
 443         seg->base = 0;
 444 }
 445
 446 static void init_sys_seg(struct vmcb_seg *seg, uint32_t type)
 447 {
 448         seg->selector = 0;
 449         seg->attrib = SVM_SELECTOR_P_MASK | type;
 450         seg->limit = 0xffff;
 451         seg->base = 0;
 452 }
 453
 454 static void init_vmcb(struct vmcb *vmcb)
 455 {
 456         struct vmcb_control_area *control = &vmcb->control;
 457         struct vmcb_save_area *save = &vmcb->save;
 458
 459         control->intercept_cr_read =    INTERCEPT_CR0_MASK |
 460                                         INTERCEPT_CR3_MASK |
 461                                         INTERCEPT_CR4_MASK;
 462
 463         control->intercept_cr_write =   INTERCEPT_CR0_MASK |
 464                                         INTERCEPT_CR3_MASK |
 465                                         INTERCEPT_CR4_MASK;
 466
 467         control->intercept_dr_read =    INTERCEPT_DR0_MASK |
 468                                         INTERCEPT_DR1_MASK |
 469                                         INTERCEPT_DR2_MASK |
 470                                         INTERCEPT_DR3_MASK;
 471
 472         control->intercept_dr_write =   INTERCEPT_DR0_MASK |
 473                                         INTERCEPT_DR1_MASK |
 474                                         INTERCEPT_DR2_MASK |
 475                                         INTERCEPT_DR3_MASK |
 476                                         INTERCEPT_DR5_MASK |
 477                                         INTERCEPT_DR7_MASK;
 478
 479         control->intercept_exceptions = 1 << PF_VECTOR;
 480
 481
 482         control->intercept =    (1ULL << INTERCEPT_INTR) |
 483                                 (1ULL << INTERCEPT_NMI) |
 484                                 (1ULL << INTERCEPT_SMI) |
 485                 /*
 486                  * selective cr0 intercept bug?
 487                  *      0:   0f 22 d8                mov    %eax,%cr3
 488                  *      3:   0f 20 c0                mov    %cr0,%eax
 489                  *      6:   0d 00 00 00 80          or     $0x80000000,%eax
 490                  *      b:   0f 22 c0                mov    %eax,%cr0
 491                  * set cr3 ->interception
 492                  * get cr0 ->interception
 493                  * set cr0 -> no interception
 494                  */
 495                 /*              (1ULL << INTERCEPT_SELECTIVE_CR0) | */
 496                                 (1ULL << INTERCEPT_CPUID) |
 497                                 (1ULL << INTERCEPT_HLT) |
 498                                 (1ULL << INTERCEPT_INVLPGA) |
 499                                 (1ULL << INTERCEPT_IOIO_PROT) |
 500                                 (1ULL << INTERCEPT_MSR_PROT) |
 501                                 (1ULL << INTERCEPT_TASK_SWITCH) |
 502                                 (1ULL << INTERCEPT_SHUTDOWN) |
 503                                 (1ULL << INTERCEPT_VMRUN) |
 504                                 (1ULL << INTERCEPT_VMMCALL) |
 505                                 (1ULL << INTERCEPT_VMLOAD) |
 506                                 (1ULL << INTERCEPT_VMSAVE) |
 507                                 (1ULL << INTERCEPT_STGI) |
 508                                 (1ULL << INTERCEPT_CLGI) |
 509                                 (1ULL << INTERCEPT_SKINIT) |
 510                                 (1ULL << INTERCEPT_MONITOR) |
 511                                 (1ULL << INTERCEPT_MWAIT);
 512
 513         control->iopm_base_pa = iopm_base;
 514         control->msrpm_base_pa = msrpm_base;
 515         control->tsc_offset = 0;
 516         control->int_ctl = V_INTR_MASKING_MASK;
 517
 518         init_seg(&save->es);
 519         init_seg(&save->ss);
 520         init_seg(&save->ds);
 521         init_seg(&save->fs);
 522         init_seg(&save->gs);
 523
 524         save->cs.selector = 0xf000;
 525         /* Executable/Readable Code Segment */
 526         save->cs.attrib = SVM_SELECTOR_READ_MASK | SVM_SELECTOR_P_MASK |
 527                 SVM_SELECTOR_S_MASK | SVM_SELECTOR_CODE_MASK;
 528         save->cs.limit = 0xffff;
 529         /*
 530          * cs.base should really be 0xffff0000, but vmx can't handle that, so
 531          * be consistent with it.
 532          *
 533          * Replace when we have real mode working for vmx.
 534          */
 535         save->cs.base = 0xf0000;
 536
 537         save->gdtr.limit = 0xffff;
 538         save->idtr.limit = 0xffff;
 539
 540         init_sys_seg(&save->ldtr, SEG_TYPE_LDT);
 541         init_sys_seg(&save->tr, SEG_TYPE_BUSY_TSS16);
 542
 543         save->efer = MSR_EFER_SVME_MASK;
 544
 545         save->dr6 = 0xffff0ff0;
 546         save->dr7 = 0x400;
 547         save->rflags = 2;
 548         save->rip = 0x0000fff0;
 549
 550         /*
 551          * cr0 val on cpu init should be 0x60000010, we enable cpu
 552          * cache by default. the orderly way is to enable cache in bios.
 553          */
 554         save->cr0 = 0x00000010 | X86_CR0_PG | X86_CR0_WP;
 555         save->cr4 = X86_CR4_PAE;
 556         /* rdx = ?? */
 557 }
 558
 559 static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm, unsigned int id)
 560 {
 561         struct vcpu_svm *svm;
 562         struct page *page;
 563         int err;
 564
 565         svm = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
 566         if (!svm) {
 567                 err = -ENOMEM;
 568                 goto out;
 569         }
 570
 571         err = kvm_vcpu_init(&svm->vcpu, kvm, id);
 572         if (err)
 573                 goto free_svm;
 574
 575         page = alloc_page(GFP_KERNEL);
 576         if (!page) {
 577                 err = -ENOMEM;
 578                 goto uninit;
 579         }
 580
 581         svm->vmcb = page_address(page);
 582         clear_page(svm->vmcb);
 583         svm->vmcb_pa = page_to_pfn(page) << PAGE_SHIFT;
 584         svm->asid_generation = 0;
 585         memset(svm->db_regs, 0, sizeof(svm->db_regs));
 586         init_vmcb(svm->vmcb);
 587
 588         fx_init(&svm->vcpu);
 589         svm->vcpu.fpu_active = 1;
 590         svm->vcpu.apic_base = 0xfee00000 | MSR_IA32_APICBASE_ENABLE;
 591         if (svm->vcpu.vcpu_id == 0)
 592                 svm->vcpu.apic_base |= MSR_IA32_APICBASE_BSP;
 593
 594         return &svm->vcpu;
 595
 596 uninit:
 597         kvm_vcpu_uninit(&svm->vcpu);
 598 free_svm:
 599         kmem_cache_free(kvm_vcpu_cache, svm);
 600 out:
 601         return ERR_PTR(err);
 602 }
 603
 604 static void svm_free_vcpu(struct kvm_vcpu *vcpu)
 605 {
 606         struct vcpu_svm *svm = to_svm(vcpu);
 607
 608         __free_page(pfn_to_page(svm->vmcb_pa >> PAGE_SHIFT));
 609         kvm_vcpu_uninit(vcpu);
 610         kmem_cache_free(kvm_vcpu_cache, svm);
 611 }
 612
 613 static void svm_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
 614 {
 615         struct vcpu_svm *svm = to_svm(vcpu);
 616         int i;
 617
 618         if (unlikely(cpu != vcpu->cpu)) {
 619                 u64 tsc_this, delta;
 620
 621                 /*
 622                  * Make sure that the guest sees a monotonically
 623                  * increasing TSC.
 624                  */
 625                 rdtscll(tsc_this);
 626                 delta = vcpu->host_tsc - tsc_this;
 627                 svm->vmcb->control.tsc_offset += delta;
 628                 vcpu->cpu = cpu;
 629         }
 630
 631         for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++)
 632                 rdmsrl(host_save_user_msrs[i], svm->host_user_msrs[i]);
 633 }
 634
 635 static void svm_vcpu_put(struct kvm_vcpu *vcpu)
 636 {
 637         struct vcpu_svm *svm = to_svm(vcpu);
 638         int i;
 639
 640         for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++)
 641                 wrmsrl(host_save_user_msrs[i], svm->host_user_msrs[i]);
 642
 643         rdtscll(vcpu->host_tsc);
 644 }
 645
 646 static void svm_vcpu_decache(struct kvm_vcpu *vcpu)
 647 {
 648 }
 649
 650 static void svm_cache_regs(struct kvm_vcpu *vcpu)
 651 {
 652         struct vcpu_svm *svm = to_svm(vcpu);
 653
 654         vcpu->regs[VCPU_REGS_RAX] = svm->vmcb->save.rax;
 655         vcpu->regs[VCPU_REGS_RSP] = svm->vmcb->save.rsp;
 656         vcpu->rip = svm->vmcb->save.rip;
 657 }
 658
 659 static void svm_decache_regs(struct kvm_vcpu *vcpu)
 660 {
 661         struct vcpu_svm *svm = to_svm(vcpu);
 662         svm->vmcb->save.rax = vcpu->regs[VCPU_REGS_RAX];
 663         svm->vmcb->save.rsp = vcpu->regs[VCPU_REGS_RSP];
 664         svm->vmcb->save.rip = vcpu->rip;
 665 }
 666
 667 static unsigned long svm_get_rflags(struct kvm_vcpu *vcpu)
 668 {
 669         return to_svm(vcpu)->vmcb->save.rflags;
 670 }
 671
 672 static void svm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
 673 {
 674         to_svm(vcpu)->vmcb->save.rflags = rflags;
 675 }
 676
 677 static struct vmcb_seg *svm_seg(struct kvm_vcpu *vcpu, int seg)
 678 {
 679         struct vmcb_save_area *save = &to_svm(vcpu)->vmcb->save;
 680
 681         switch (seg) {
 682         case VCPU_SREG_CS: return &save->cs;
 683         case VCPU_SREG_DS: return &save->ds;
 684         case VCPU_SREG_ES: return &save->es;
 685         case VCPU_SREG_FS: return &save->fs;
 686         case VCPU_SREG_GS: return &save->gs;
 687         case VCPU_SREG_SS: return &save->ss;
 688         case VCPU_SREG_TR: return &save->tr;
 689         case VCPU_SREG_LDTR: return &save->ldtr;
 690         }
 691         BUG();
 692         return NULL;
 693 }
 694
 695 static u64 svm_get_segment_base(struct kvm_vcpu *vcpu, int seg)
 696 {
 697         struct vmcb_seg *s = svm_seg(vcpu, seg);
 698
 699         return s->base;
 700 }
 701
 702 static void svm_get_segment(struct kvm_vcpu *vcpu,
 703                             struct kvm_segment *var, int seg)
 704 {
 705         struct vmcb_seg *s = svm_seg(vcpu, seg);
 706
 707         var->base = s->base;
 708         var->limit = s->limit;
 709         var->selector = s->selector;
 710         var->type = s->attrib & SVM_SELECTOR_TYPE_MASK;
 711         var->s = (s->attrib >> SVM_SELECTOR_S_SHIFT) & 1;
 712         var->dpl = (s->attrib >> SVM_SELECTOR_DPL_SHIFT) & 3;
 713         var->present = (s->attrib >> SVM_SELECTOR_P_SHIFT) & 1;
 714         var->avl = (s->attrib >> SVM_SELECTOR_AVL_SHIFT) & 1;
 715         var->l = (s->attrib >> SVM_SELECTOR_L_SHIFT) & 1;
 716         var->db = (s->attrib >> SVM_SELECTOR_DB_SHIFT) & 1;
 717         var->g = (s->attrib >> SVM_SELECTOR_G_SHIFT) & 1;
 718         var->unusable = !var->present;
 719 }
 720
 721 static void svm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l)
 722 {
 723         struct vmcb_seg *s = svm_seg(vcpu, VCPU_SREG_CS);
 724
 725         *db = (s->attrib >> SVM_SELECTOR_DB_SHIFT) & 1;
 726         *l = (s->attrib >> SVM_SELECTOR_L_SHIFT) & 1;
 727 }
 728
 729 static void svm_get_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
 730 {
 731         struct vcpu_svm *svm = to_svm(vcpu);
 732
 733         dt->limit = svm->vmcb->save.idtr.limit;
 734         dt->base = svm->vmcb->save.idtr.base;
 735 }
 736
 737 static void svm_set_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
 738 {
 739         struct vcpu_svm *svm = to_svm(vcpu);
 740
 741         svm->vmcb->save.idtr.limit = dt->limit;
 742         svm->vmcb->save.idtr.base = dt->base ;
 743 }
 744
 745 static void svm_get_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
 746 {
 747         struct vcpu_svm *svm = to_svm(vcpu);
 748
 749         dt->limit = svm->vmcb->save.gdtr.limit;
 750         dt->base = svm->vmcb->save.gdtr.base;
 751 }
 752
 753 static void svm_set_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
 754 {
 755         struct vcpu_svm *svm = to_svm(vcpu);
 756
 757         svm->vmcb->save.gdtr.limit = dt->limit;
 758         svm->vmcb->save.gdtr.base = dt->base ;
 759 }
 760
 761 static void svm_decache_cr4_guest_bits(struct kvm_vcpu *vcpu)
 762 {
 763 }
 764
 765 static void svm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
 766 {
 767         struct vcpu_svm *svm = to_svm(vcpu);
 768
 769 #ifdef CONFIG_X86_64
 770         if (vcpu->shadow_efer & KVM_EFER_LME) {
 771                 if (!is_paging(vcpu) && (cr0 & X86_CR0_PG)) {
 772                         vcpu->shadow_efer |= KVM_EFER_LMA;
 773                         svm->vmcb->save.efer |= KVM_EFER_LMA | KVM_EFER_LME;
 774                 }
 775
 776                 if (is_paging(vcpu) && !(cr0 & X86_CR0_PG) ) {
 777                         vcpu->shadow_efer &= ~KVM_EFER_LMA;
 778                         svm->vmcb->save.efer &= ~(KVM_EFER_LMA | KVM_EFER_LME);
 779                 }
 780         }
 781 #endif
 782         if ((vcpu->cr0 & X86_CR0_TS) && !(cr0 & X86_CR0_TS)) {
 783                 svm->vmcb->control.intercept_exceptions &= ~(1 << NM_VECTOR);
 784                 vcpu->fpu_active = 1;
 785         }
 786
 787         vcpu->cr0 = cr0;
 788         cr0 |= X86_CR0_PG | X86_CR0_WP;
 789         cr0 &= ~(X86_CR0_CD | X86_CR0_NW);
 790         svm->vmcb->save.cr0 = cr0;
 791 }
 792
 793 static void svm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
 794 {
 795        vcpu->cr4 = cr4;
 796        to_svm(vcpu)->vmcb->save.cr4 = cr4 | X86_CR4_PAE;
 797 }
 798
 799 static void svm_set_segment(struct kvm_vcpu *vcpu,
 800                             struct kvm_segment *var, int seg)
 801 {
 802         struct vcpu_svm *svm = to_svm(vcpu);
 803         struct vmcb_seg *s = svm_seg(vcpu, seg);
 804
 805         s->base = var->base;
 806         s->limit = var->limit;
 807         s->selector = var->selector;
 808         if (var->unusable)
 809                 s->attrib = 0;
 810         else {
 811                 s->attrib = (var->type & SVM_SELECTOR_TYPE_MASK);
 812                 s->attrib |= (var->s & 1) << SVM_SELECTOR_S_SHIFT;
 813                 s->attrib |= (var->dpl & 3) << SVM_SELECTOR_DPL_SHIFT;
 814                 s->attrib |= (var->present & 1) << SVM_SELECTOR_P_SHIFT;
 815                 s->attrib |= (var->avl & 1) << SVM_SELECTOR_AVL_SHIFT;
 816                 s->attrib |= (var->l & 1) << SVM_SELECTOR_L_SHIFT;
 817                 s->attrib |= (var->db & 1) << SVM_SELECTOR_DB_SHIFT;
 818                 s->attrib |= (var->g & 1) << SVM_SELECTOR_G_SHIFT;
 819         }
 820         if (seg == VCPU_SREG_CS)
 821                 svm->vmcb->save.cpl
 822                         = (svm->vmcb->save.cs.attrib
 823                            >> SVM_SELECTOR_DPL_SHIFT) & 3;
 824
 825 }
 826
 827 /* FIXME:
 828
 829         svm(vcpu)->vmcb->control.int_ctl &= ~V_TPR_MASK;
 830         svm(vcpu)->vmcb->control.int_ctl |= (sregs->cr8 & V_TPR_MASK);
 831
 832 */
 833
 834 static int svm_guest_debug(struct kvm_vcpu *vcpu, struct kvm_debug_guest *dbg)
 835 {
 836         return -EOPNOTSUPP;
 837 }
 838
 839 static void load_host_msrs(struct kvm_vcpu *vcpu)
 840 {
 841 #ifdef CONFIG_X86_64
 842         wrmsrl(MSR_GS_BASE, to_svm(vcpu)->host_gs_base);
 843 #endif
 844 }
 845
 846 static void save_host_msrs(struct kvm_vcpu *vcpu)
 847 {
 848 #ifdef CONFIG_X86_64
 849         rdmsrl(MSR_GS_BASE, to_svm(vcpu)->host_gs_base);
 850 #endif
 851 }
 852
 853 static void new_asid(struct vcpu_svm *svm, struct svm_cpu_data *svm_data)
 854 {
 855         if (svm_data->next_asid > svm_data->max_asid) {
 856                 ++svm_data->asid_generation;
 857                 svm_data->next_asid = 1;
 858                 svm->vmcb->control.tlb_ctl = TLB_CONTROL_FLUSH_ALL_ASID;
 859         }
 860
 861         svm->vcpu.cpu = svm_data->cpu;
 862         svm->asid_generation = svm_data->asid_generation;
 863         svm->vmcb->control.asid = svm_data->next_asid++;
 864 }
 865
 866 static void svm_invlpg(struct kvm_vcpu *vcpu, gva_t address)
 867 {
 868         invlpga(address, to_svm(vcpu)->vmcb->control.asid); // is needed?
 869 }
 870
 871 static unsigned long svm_get_dr(struct kvm_vcpu *vcpu, int dr)
 872 {
 873         return to_svm(vcpu)->db_regs[dr];
 874 }
 875
 876 static void svm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long value,
 877                        int *exception)
 878 {
 879         struct vcpu_svm *svm = to_svm(vcpu);
 880
 881         *exception = 0;
 882
 883         if (svm->vmcb->save.dr7 & DR7_GD_MASK) {
 884                 svm->vmcb->save.dr7 &= ~DR7_GD_MASK;
 885                 svm->vmcb->save.dr6 |= DR6_BD_MASK;
 886                 *exception = DB_VECTOR;
 887                 return;
 888         }
 889
 890         switch (dr) {
 891         case 0 ... 3:
 892                 svm->db_regs[dr] = value;
 893                 return;
 894         case 4 ... 5:
 895                 if (vcpu->cr4 & X86_CR4_DE) {
 896                         *exception = UD_VECTOR;
 897                         return;
 898                 }
 899         case 7: {
 900                 if (value & ~((1ULL << 32) - 1)) {
 901                         *exception = GP_VECTOR;
 902                         return;
 903                 }
 904                 svm->vmcb->save.dr7 = value;
 905                 return;
 906         }
 907         default:
 908                 printk(KERN_DEBUG "%s: unexpected dr %u\n",
 909                        __FUNCTION__, dr);
 910                 *exception = UD_VECTOR;
 911                 return;
 912         }
 913 }
 914
 915 static int pf_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
 916 {
 917         u32 exit_int_info = svm->vmcb->control.exit_int_info;
 918         struct kvm *kvm = svm->vcpu.kvm;
 919         u64 fault_address;
 920         u32 error_code;
 921         enum emulation_result er;
 922         int r;
 923
 924         if (is_external_interrupt(exit_int_info))
 925                 push_irq(&svm->vcpu, exit_int_info & SVM_EVTINJ_VEC_MASK);
 926
 927         mutex_lock(&kvm->lock);
 928
 929         fault_address  = svm->vmcb->control.exit_info_2;
 930         error_code = svm->vmcb->control.exit_info_1;
 931         r = kvm_mmu_page_fault(&svm->vcpu, fault_address, error_code);
 932         if (r < 0) {
 933                 mutex_unlock(&kvm->lock);
 934                 return r;
 935         }
 936         if (!r) {
 937                 mutex_unlock(&kvm->lock);
 938                 return 1;
 939         }
 940         er = emulate_instruction(&svm->vcpu, kvm_run, fault_address,
 941                                  error_code);
 942         mutex_unlock(&kvm->lock);
 943
 944         switch (er) {
 945         case EMULATE_DONE:
 946                 return 1;
 947         case EMULATE_DO_MMIO:
 948                 ++svm->vcpu.stat.mmio_exits;
 949                 return 0;
 950         case EMULATE_FAIL:
 951                 vcpu_printf(&svm->vcpu, "%s: emulate fail\n", __FUNCTION__);
 952                 break;
 953         default:
 954                 BUG();
 955         }
 956
 957         kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
 958         return 0;
 959 }
 960
 961 static int nm_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
 962 {
 963         svm->vmcb->control.intercept_exceptions &= ~(1 << NM_VECTOR);
 964         if (!(svm->vcpu.cr0 & X86_CR0_TS))
 965                 svm->vmcb->save.cr0 &= ~X86_CR0_TS;
 966         svm->vcpu.fpu_active = 1;
 967
 968         return 1;
 969 }
 970
 971 static int shutdown_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
 972 {
 973         /*
 974          * VMCB is undefined after a SHUTDOWN intercept
 975          * so reinitialize it.
 976          */
 977         clear_page(svm->vmcb);
 978         init_vmcb(svm->vmcb);
 979
 980         kvm_run->exit_reason = KVM_EXIT_SHUTDOWN;
 981         return 0;
 982 }
 983
 984 static int io_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
 985 {
 986         u32 io_info = svm->vmcb->control.exit_info_1; //address size bug?
 987         int size, down, in, string, rep;
 988         unsigned port;
 989
 990         ++svm->vcpu.stat.io_exits;
 991
 992         svm->next_rip = svm->vmcb->control.exit_info_2;
 993
 994         string = (io_info & SVM_IOIO_STR_MASK) != 0;
 995
 996         if (string) {
 997                 if (emulate_instruction(&svm->vcpu, kvm_run, 0, 0) == EMULATE_DO_MMIO)
 998                         return 0;
 999                 return 1;
1000         }
1001
1002         in = (io_info & SVM_IOIO_TYPE_MASK) != 0;
1003         port = io_info >> 16;
1004         size = (io_info & SVM_IOIO_SIZE_MASK) >> SVM_IOIO_SIZE_SHIFT;
1005         rep = (io_info & SVM_IOIO_REP_MASK) != 0;
1006         down = (svm->vmcb->save.rflags & X86_EFLAGS_DF) != 0;
1007
1008         return kvm_emulate_pio(&svm->vcpu, kvm_run, in, size, port);
1009 }
1010
1011 static int nop_on_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
1012 {
1013         return 1;
1014 }
1015
1016 static int halt_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
1017 {
1018         svm->next_rip = svm->vmcb->save.rip + 1;
1019         skip_emulated_instruction(&svm->vcpu);
1020         return kvm_emulate_halt(&svm->vcpu);
1021 }
1022
1023 static int vmmcall_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
1024 {
1025         svm->next_rip = svm->vmcb->save.rip + 3;
1026         skip_emulated_instruction(&svm->vcpu);
1027         return kvm_hypercall(&svm->vcpu, kvm_run);
1028 }
1029
1030 static int invalid_op_interception(struct vcpu_svm *svm,
1031                                    struct kvm_run *kvm_run)
1032 {
1033         inject_ud(&svm->vcpu);
1034         return 1;
1035 }
1036
1037 static int task_switch_interception(struct vcpu_svm *svm,
1038                                     struct kvm_run *kvm_run)
1039 {
1040         pr_unimpl(&svm->vcpu, "%s: task switch is unsupported\n", __FUNCTION__);
1041         kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
1042         return 0;
1043 }
1044
1045 static int cpuid_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
1046 {
1047         svm->next_rip = svm->vmcb->save.rip + 2;
1048         kvm_emulate_cpuid(&svm->vcpu);
1049         return 1;
1050 }
1051
1052 static int emulate_on_interception(struct vcpu_svm *svm,
1053                                    struct kvm_run *kvm_run)
1054 {
1055         if (emulate_instruction(&svm->vcpu, NULL, 0, 0) != EMULATE_DONE)
1056                 pr_unimpl(&svm->vcpu, "%s: failed\n", __FUNCTION__);
1057         return 1;
1058 }
1059
1060 static int svm_get_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 *data)
1061 {
1062         struct vcpu_svm *svm = to_svm(vcpu);
1063
1064         switch (ecx) {
1065         case MSR_IA32_TIME_STAMP_COUNTER: {
1066                 u64 tsc;
1067
1068                 rdtscll(tsc);
1069                 *data = svm->vmcb->control.tsc_offset + tsc;
1070                 break;
1071         }
1072         case MSR_K6_STAR:
1073                 *data = svm->vmcb->save.star;
1074                 break;
1075 #ifdef CONFIG_X86_64
1076         case MSR_LSTAR:
1077                 *data = svm->vmcb->save.lstar;
1078                 break;
1079         case MSR_CSTAR:
1080                 *data = svm->vmcb->save.cstar;
1081                 break;
1082         case MSR_KERNEL_GS_BASE:
1083                 *data = svm->vmcb->save.kernel_gs_base;
1084                 break;
1085         case MSR_SYSCALL_MASK:
1086                 *data = svm->vmcb->save.sfmask;
1087                 break;
1088 #endif
1089         case MSR_IA32_SYSENTER_CS:
1090                 *data = svm->vmcb->save.sysenter_cs;
1091                 break;
1092         case MSR_IA32_SYSENTER_EIP:
1093                 *data = svm->vmcb->save.sysenter_eip;
1094                 break;
1095         case MSR_IA32_SYSENTER_ESP:
1096                 *data = svm->vmcb->save.sysenter_esp;
1097                 break;
1098         default:
1099                 return kvm_get_msr_common(vcpu, ecx, data);
1100         }
1101         return 0;
1102 }
1103
1104 static int rdmsr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
1105 {
1106         u32 ecx = svm->vcpu.regs[VCPU_REGS_RCX];
1107         u64 data;
1108
1109         if (svm_get_msr(&svm->vcpu, ecx, &data))
1110                 svm_inject_gp(&svm->vcpu, 0);
1111         else {
1112                 svm->vmcb->save.rax = data & 0xffffffff;
1113                 svm->vcpu.regs[VCPU_REGS_RDX] = data >> 32;
1114                 svm->next_rip = svm->vmcb->save.rip + 2;
1115                 skip_emulated_instruction(&svm->vcpu);
1116         }
1117         return 1;
1118 }
1119
1120 static int svm_set_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 data)
1121 {
1122         struct vcpu_svm *svm = to_svm(vcpu);
1123
1124         switch (ecx) {
1125         case MSR_IA32_TIME_STAMP_COUNTER: {
1126                 u64 tsc;
1127
1128                 rdtscll(tsc);
1129                 svm->vmcb->control.tsc_offset = data - tsc;
1130                 break;
1131         }
1132         case MSR_K6_STAR:
1133                 svm->vmcb->save.star = data;
1134                 break;
1135 #ifdef CONFIG_X86_64
1136         case MSR_LSTAR:
1137                 svm->vmcb->save.lstar = data;
1138                 break;
1139         case MSR_CSTAR:
1140                 svm->vmcb->save.cstar = data;
1141                 break;
1142         case MSR_KERNEL_GS_BASE:
1143                 svm->vmcb->save.kernel_gs_base = data;
1144                 break;
1145         case MSR_SYSCALL_MASK:
1146                 svm->vmcb->save.sfmask = data;
1147                 break;
1148 #endif
1149         case MSR_IA32_SYSENTER_CS:
1150                 svm->vmcb->save.sysenter_cs = data;
1151                 break;
1152         case MSR_IA32_SYSENTER_EIP:
1153                 svm->vmcb->save.sysenter_eip = data;
1154                 break;
1155         case MSR_IA32_SYSENTER_ESP:
1156                 svm->vmcb->save.sysenter_esp = data;
1157                 break;
1158         default:
1159                 return kvm_set_msr_common(vcpu, ecx, data);
1160         }
1161         return 0;
1162 }
1163
1164 static int wrmsr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
1165 {
1166         u32 ecx = svm->vcpu.regs[VCPU_REGS_RCX];
1167         u64 data = (svm->vmcb->save.rax & -1u)
1168                 | ((u64)(svm->vcpu.regs[VCPU_REGS_RDX] & -1u) << 32);
1169         svm->next_rip = svm->vmcb->save.rip + 2;
1170         if (svm_set_msr(&svm->vcpu, ecx, data))
1171                 svm_inject_gp(&svm->vcpu, 0);
1172         else
1173                 skip_emulated_instruction(&svm->vcpu);
1174         return 1;
1175 }
1176
1177 static int msr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
1178 {
1179         if (svm->vmcb->control.exit_info_1)
1180                 return wrmsr_interception(svm, kvm_run);
1181         else
1182                 return rdmsr_interception(svm, kvm_run);
1183 }
1184
1185 static int interrupt_window_interception(struct vcpu_svm *svm,
1186                                    struct kvm_run *kvm_run)
1187 {
1188         /*
1189          * If the user space waits to inject interrupts, exit as soon as
1190          * possible
1191          */
1192         if (kvm_run->request_interrupt_window &&
1193             !svm->vcpu.irq_summary) {
1194                 ++svm->vcpu.stat.irq_window_exits;
1195                 kvm_run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN;
1196                 return 0;
1197         }
1198
1199         return 1;
1200 }
1201
1202 static int (*svm_exit_handlers[])(struct vcpu_svm *svm,
1203                                       struct kvm_run *kvm_run) = {
1204         [SVM_EXIT_READ_CR0]                     = emulate_on_interception,
1205         [SVM_EXIT_READ_CR3]                     = emulate_on_interception,
1206         [SVM_EXIT_READ_CR4]                     = emulate_on_interception,
1207         /* for now: */
1208         [SVM_EXIT_WRITE_CR0]                    = emulate_on_interception,
1209         [SVM_EXIT_WRITE_CR3]                    = emulate_on_interception,
1210         [SVM_EXIT_WRITE_CR4]                    = emulate_on_interception,
1211         [SVM_EXIT_READ_DR0]                     = emulate_on_interception,
1212         [SVM_EXIT_READ_DR1]                     = emulate_on_interception,
1213         [SVM_EXIT_READ_DR2]                     = emulate_on_interception,
1214         [SVM_EXIT_READ_DR3]                     = emulate_on_interception,
1215         [SVM_EXIT_WRITE_DR0]                    = emulate_on_interception,
1216         [SVM_EXIT_WRITE_DR1]                    = emulate_on_interception,
1217         [SVM_EXIT_WRITE_DR2]                    = emulate_on_interception,
1218         [SVM_EXIT_WRITE_DR3]                    = emulate_on_interception,
1219         [SVM_EXIT_WRITE_DR5]                    = emulate_on_interception,
1220         [SVM_EXIT_WRITE_DR7]                    = emulate_on_interception,
1221         [SVM_EXIT_EXCP_BASE + PF_VECTOR]        = pf_interception,
1222         [SVM_EXIT_EXCP_BASE + NM_VECTOR]        = nm_interception,
1223         [SVM_EXIT_INTR]                         = nop_on_interception,
1224         [SVM_EXIT_NMI]                          = nop_on_interception,
1225         [SVM_EXIT_SMI]                          = nop_on_interception,
1226         [SVM_EXIT_INIT]                         = nop_on_interception,
1227         [SVM_EXIT_VINTR]                        = interrupt_window_interception,
1228         /* [SVM_EXIT_CR0_SEL_WRITE]             = emulate_on_interception, */
1229         [SVM_EXIT_CPUID]                        = cpuid_interception,
1230         [SVM_EXIT_HLT]                          = halt_interception,
1231         [SVM_EXIT_INVLPG]                       = emulate_on_interception,
1232         [SVM_EXIT_INVLPGA]                      = invalid_op_interception,
1233         [SVM_EXIT_IOIO]                         = io_interception,
1234         [SVM_EXIT_MSR]                          = msr_interception,
1235         [SVM_EXIT_TASK_SWITCH]                  = task_switch_interception,
1236         [SVM_EXIT_SHUTDOWN]                     = shutdown_interception,
1237         [SVM_EXIT_VMRUN]                        = invalid_op_interception,
1238         [SVM_EXIT_VMMCALL]                      = vmmcall_interception,
1239         [SVM_EXIT_VMLOAD]                       = invalid_op_interception,
1240         [SVM_EXIT_VMSAVE]                       = invalid_op_interception,
1241         [SVM_EXIT_STGI]                         = invalid_op_interception,
1242         [SVM_EXIT_CLGI]                         = invalid_op_interception,
1243         [SVM_EXIT_SKINIT]                       = invalid_op_interception,
1244         [SVM_EXIT_MONITOR]                      = invalid_op_interception,
1245         [SVM_EXIT_MWAIT]                        = invalid_op_interception,
1246 };
1247
1248
1249 static int handle_exit(struct vcpu_svm *svm, struct kvm_run *kvm_run)
1250 {
1251         u32 exit_code = svm->vmcb->control.exit_code;
1252
1253         if (is_external_interrupt(svm->vmcb->control.exit_int_info) &&
1254             exit_code != SVM_EXIT_EXCP_BASE + PF_VECTOR)
1255                 printk(KERN_ERR "%s: unexpected exit_ini_info 0x%x "
1256                        "exit_code 0x%x\n",
1257                        __FUNCTION__, svm->vmcb->control.exit_int_info,
1258                        exit_code);
1259
1260         if (exit_code >= ARRAY_SIZE(svm_exit_handlers)
1261             || svm_exit_handlers[exit_code] == 0) {
1262                 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
1263                 kvm_run->hw.hardware_exit_reason = exit_code;
1264                 return 0;
1265         }
1266
1267         return svm_exit_handlers[exit_code](svm, kvm_run);
1268 }
1269
1270 static void reload_tss(struct kvm_vcpu *vcpu)
1271 {
1272         int cpu = raw_smp_processor_id();
1273
1274         struct svm_cpu_data *svm_data = per_cpu(svm_data, cpu);
1275         svm_data->tss_desc->type = 9; //available 32/64-bit TSS
1276         load_TR_desc();
1277 }
1278
1279 static void pre_svm_run(struct vcpu_svm *svm)
1280 {
1281         int cpu = raw_smp_processor_id();
1282
1283         struct svm_cpu_data *svm_data = per_cpu(svm_data, cpu);
1284
1285         svm->vmcb->control.tlb_ctl = TLB_CONTROL_DO_NOTHING;
1286         if (svm->vcpu.cpu != cpu ||
1287             svm->asid_generation != svm_data->asid_generation)
1288                 new_asid(svm, svm_data);
1289 }
1290
1291
1292 static inline void inject_irq(struct vcpu_svm *svm)
1293 {
1294         struct vmcb_control_area *control;
1295
1296         control = &svm->vmcb->control;
1297         control->int_vector = pop_irq(&svm->vcpu);
1298         control->int_ctl &= ~V_INTR_PRIO_MASK;
1299         control->int_ctl |= V_IRQ_MASK |
1300                 ((/*control->int_vector >> 4*/ 0xf) << V_INTR_PRIO_SHIFT);
1301 }
1302
1303 static void reput_irq(struct vcpu_svm *svm)
1304 {
1305         struct vmcb_control_area *control = &svm->vmcb->control;
1306
1307         if (control->int_ctl & V_IRQ_MASK) {
1308                 control->int_ctl &= ~V_IRQ_MASK;
1309                 push_irq(&svm->vcpu, control->int_vector);
1310         }
1311
1312         svm->vcpu.interrupt_window_open =
1313                 !(control->int_state & SVM_INTERRUPT_SHADOW_MASK);
1314 }
1315
1316 static void do_interrupt_requests(struct vcpu_svm *svm,
1317                                        struct kvm_run *kvm_run)
1318 {
1319         struct vmcb_control_area *control = &svm->vmcb->control;
1320
1321         svm->vcpu.interrupt_window_open =
1322                 (!(control->int_state & SVM_INTERRUPT_SHADOW_MASK) &&
1323                  (svm->vmcb->save.rflags & X86_EFLAGS_IF));
1324
1325         if (svm->vcpu.interrupt_window_open && svm->vcpu.irq_summary)
1326                 /*
1327                  * If interrupts enabled, and not blocked by sti or mov ss. Good.
1328                  */
1329                 inject_irq(svm);
1330
1331         /*
1332          * Interrupts blocked.  Wait for unblock.
1333          */
1334         if (!svm->vcpu.interrupt_window_open &&
1335             (svm->vcpu.irq_summary || kvm_run->request_interrupt_window)) {
1336                 control->intercept |= 1ULL << INTERCEPT_VINTR;
1337         } else
1338                 control->intercept &= ~(1ULL << INTERCEPT_VINTR);
1339 }
1340
1341 static void post_kvm_run_save(struct vcpu_svm *svm,
1342                               struct kvm_run *kvm_run)
1343 {
1344         kvm_run->ready_for_interrupt_injection
1345                 = (svm->vcpu.interrupt_window_open &&
1346                    svm->vcpu.irq_summary == 0);
1347         kvm_run->if_flag = (svm->vmcb->save.rflags & X86_EFLAGS_IF) != 0;
1348         kvm_run->cr8 = svm->vcpu.cr8;
1349         kvm_run->apic_base = svm->vcpu.apic_base;
1350 }
1351
1352 /*
1353  * Check if userspace requested an interrupt window, and that the
1354  * interrupt window is open.
1355  *
1356  * No need to exit to userspace if we already have an interrupt queued.
1357  */
1358 static int dm_request_for_irq_injection(struct vcpu_svm *svm,
1359                                           struct kvm_run *kvm_run)
1360 {
1361         return (!svm->vcpu.irq_summary &&
1362                 kvm_run->request_interrupt_window &&
1363                 svm->vcpu.interrupt_window_open &&
1364                 (svm->vmcb->save.rflags & X86_EFLAGS_IF));
1365 }
1366
1367 static void save_db_regs(unsigned long *db_regs)
1368 {
1369         asm volatile ("mov %%dr0, %0" : "=r"(db_regs[0]));
1370         asm volatile ("mov %%dr1, %0" : "=r"(db_regs[1]));
1371         asm volatile ("mov %%dr2, %0" : "=r"(db_regs[2]));
1372         asm volatile ("mov %%dr3, %0" : "=r"(db_regs[3]));
1373 }
1374
1375 static void load_db_regs(unsigned long *db_regs)
1376 {
1377         asm volatile ("mov %0, %%dr0" : : "r"(db_regs[0]));
1378         asm volatile ("mov %0, %%dr1" : : "r"(db_regs[1]));
1379         asm volatile ("mov %0, %%dr2" : : "r"(db_regs[2]));
1380         asm volatile ("mov %0, %%dr3" : : "r"(db_regs[3]));
1381 }
1382
1383 static void svm_flush_tlb(struct kvm_vcpu *vcpu)
1384 {
1385         force_new_asid(vcpu);
1386 }
1387
1388 static int svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
1389 {
1390         struct vcpu_svm *svm = to_svm(vcpu);
1391         u16 fs_selector;
1392         u16 gs_selector;
1393         u16 ldt_selector;
1394         int r;
1395
1396 again:
1397         r = kvm_mmu_reload(vcpu);
1398         if (unlikely(r))
1399                 return r;
1400
1401         clgi();
1402
1403         if (signal_pending(current)) {
1404                 stgi();
1405                 ++vcpu->stat.signal_exits;
1406                 post_kvm_run_save(svm, kvm_run);
1407                 kvm_run->exit_reason = KVM_EXIT_INTR;
1408                 return -EINTR;
1409         }
1410
1411         if (!vcpu->mmio_read_completed)
1412                 do_interrupt_requests(svm, kvm_run);
1413
1414         vcpu->guest_mode = 1;
1415         if (vcpu->requests)
1416                 if (test_and_clear_bit(KVM_TLB_FLUSH, &vcpu->requests))
1417                     svm_flush_tlb(vcpu);
1418
1419         pre_svm_run(svm);
1420
1421         save_host_msrs(vcpu);
1422         fs_selector = read_fs();
1423         gs_selector = read_gs();
1424         ldt_selector = read_ldt();
1425         svm->host_cr2 = kvm_read_cr2();
1426         svm->host_dr6 = read_dr6();
1427         svm->host_dr7 = read_dr7();
1428         svm->vmcb->save.cr2 = vcpu->cr2;
1429
1430         if (svm->vmcb->save.dr7 & 0xff) {
1431                 write_dr7(0);
1432                 save_db_regs(svm->host_db_regs);
1433                 load_db_regs(svm->db_regs);
1434         }
1435
1436         if (vcpu->fpu_active) {
1437                 fx_save(&vcpu->host_fx_image);
1438                 fx_restore(&vcpu->guest_fx_image);
1439         }
1440
1441         asm volatile (
1442 #ifdef CONFIG_X86_64
1443                 "push %%rbx; push %%rcx; push %%rdx;"
1444                 "push %%rsi; push %%rdi; push %%rbp;"
1445                 "push %%r8;  push %%r9;  push %%r10; push %%r11;"
1446                 "push %%r12; push %%r13; push %%r14; push %%r15;"
1447 #else
1448                 "push %%ebx; push %%ecx; push %%edx;"
1449                 "push %%esi; push %%edi; push %%ebp;"
1450 #endif
1451
1452 #ifdef CONFIG_X86_64
1453                 "mov %c[rbx](%[svm]), %%rbx \n\t"
1454                 "mov %c[rcx](%[svm]), %%rcx \n\t"
1455                 "mov %c[rdx](%[svm]), %%rdx \n\t"
1456                 "mov %c[rsi](%[svm]), %%rsi \n\t"
1457                 "mov %c[rdi](%[svm]), %%rdi \n\t"
1458                 "mov %c[rbp](%[svm]), %%rbp \n\t"
1459                 "mov %c[r8](%[svm]),  %%r8  \n\t"
1460                 "mov %c[r9](%[svm]),  %%r9  \n\t"
1461                 "mov %c[r10](%[svm]), %%r10 \n\t"
1462                 "mov %c[r11](%[svm]), %%r11 \n\t"
1463                 "mov %c[r12](%[svm]), %%r12 \n\t"
1464                 "mov %c[r13](%[svm]), %%r13 \n\t"
1465                 "mov %c[r14](%[svm]), %%r14 \n\t"
1466                 "mov %c[r15](%[svm]), %%r15 \n\t"
1467 #else
1468                 "mov %c[rbx](%[svm]), %%ebx \n\t"
1469                 "mov %c[rcx](%[svm]), %%ecx \n\t"
1470                 "mov %c[rdx](%[svm]), %%edx \n\t"
1471                 "mov %c[rsi](%[svm]), %%esi \n\t"
1472                 "mov %c[rdi](%[svm]), %%edi \n\t"
1473                 "mov %c[rbp](%[svm]), %%ebp \n\t"
1474 #endif
1475
1476 #ifdef CONFIG_X86_64
1477                 /* Enter guest mode */
1478                 "push %%rax \n\t"
1479                 "mov %c[vmcb](%[svm]), %%rax \n\t"
1480                 SVM_VMLOAD "\n\t"
1481                 SVM_VMRUN "\n\t"
1482                 SVM_VMSAVE "\n\t"
1483                 "pop %%rax \n\t"
1484 #else
1485                 /* Enter guest mode */
1486                 "push %%eax \n\t"
1487                 "mov %c[vmcb](%[svm]), %%eax \n\t"
1488                 SVM_VMLOAD "\n\t"
1489                 SVM_VMRUN "\n\t"
1490                 SVM_VMSAVE "\n\t"
1491                 "pop %%eax \n\t"
1492 #endif
1493
1494                 /* Save guest registers, load host registers */
1495 #ifdef CONFIG_X86_64
1496                 "mov %%rbx, %c[rbx](%[svm]) \n\t"
1497                 "mov %%rcx, %c[rcx](%[svm]) \n\t"
1498                 "mov %%rdx, %c[rdx](%[svm]) \n\t"
1499                 "mov %%rsi, %c[rsi](%[svm]) \n\t"
1500                 "mov %%rdi, %c[rdi](%[svm]) \n\t"
1501                 "mov %%rbp, %c[rbp](%[svm]) \n\t"
1502                 "mov %%r8,  %c[r8](%[svm]) \n\t"
1503                 "mov %%r9,  %c[r9](%[svm]) \n\t"
1504                 "mov %%r10, %c[r10](%[svm]) \n\t"
1505                 "mov %%r11, %c[r11](%[svm]) \n\t"
1506                 "mov %%r12, %c[r12](%[svm]) \n\t"
1507                 "mov %%r13, %c[r13](%[svm]) \n\t"
1508                 "mov %%r14, %c[r14](%[svm]) \n\t"
1509                 "mov %%r15, %c[r15](%[svm]) \n\t"
1510
1511                 "pop  %%r15; pop  %%r14; pop  %%r13; pop  %%r12;"
1512                 "pop  %%r11; pop  %%r10; pop  %%r9;  pop  %%r8;"
1513                 "pop  %%rbp; pop  %%rdi; pop  %%rsi;"
1514                 "pop  %%rdx; pop  %%rcx; pop  %%rbx; \n\t"
1515 #else
1516                 "mov %%ebx, %c[rbx](%[svm]) \n\t"
1517                 "mov %%ecx, %c[rcx](%[svm]) \n\t"
1518                 "mov %%edx, %c[rdx](%[svm]) \n\t"
1519                 "mov %%esi, %c[rsi](%[svm]) \n\t"
1520                 "mov %%edi, %c[rdi](%[svm]) \n\t"
1521                 "mov %%ebp, %c[rbp](%[svm]) \n\t"
1522
1523                 "pop  %%ebp; pop  %%edi; pop  %%esi;"
1524                 "pop  %%edx; pop  %%ecx; pop  %%ebx; \n\t"
1525 #endif
1526                 :
1527                 : [svm]"a"(svm),
1528                   [vmcb]"i"(offsetof(struct vcpu_svm, vmcb_pa)),
1529                   [rbx]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_RBX])),
1530                   [rcx]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_RCX])),
1531                   [rdx]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_RDX])),
1532                   [rsi]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_RSI])),
1533                   [rdi]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_RDI])),
1534                   [rbp]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_RBP]))
1535 #ifdef CONFIG_X86_64
1536                   ,[r8 ]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R8])),
1537                   [r9 ]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R9 ])),
1538                   [r10]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R10])),
1539                   [r11]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R11])),
1540                   [r12]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R12])),
1541                   [r13]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R13])),
1542                   [r14]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R14])),
1543                   [r15]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R15]))
1544 #endif
1545                 : "cc", "memory" );
1546
1547         vcpu->guest_mode = 0;
1548
1549         if (vcpu->fpu_active) {
1550                 fx_save(&vcpu->guest_fx_image);
1551                 fx_restore(&vcpu->host_fx_image);
1552         }
1553
1554         if ((svm->vmcb->save.dr7 & 0xff))
1555                 load_db_regs(svm->host_db_regs);
1556
1557         vcpu->cr2 = svm->vmcb->save.cr2;
1558
1559         write_dr6(svm->host_dr6);
1560         write_dr7(svm->host_dr7);
1561         kvm_write_cr2(svm->host_cr2);
1562
1563         load_fs(fs_selector);
1564         load_gs(gs_selector);
1565         load_ldt(ldt_selector);
1566         load_host_msrs(vcpu);
1567
1568         reload_tss(vcpu);
1569
1570         /*
1571          * Profile KVM exit RIPs:
1572          */
1573         if (unlikely(prof_on == KVM_PROFILING))
1574                 profile_hit(KVM_PROFILING,
1575                         (void *)(unsigned long)svm->vmcb->save.rip);
1576
1577         stgi();
1578
1579         reput_irq(svm);
1580
1581         svm->next_rip = 0;
1582
1583         if (svm->vmcb->control.exit_code == SVM_EXIT_ERR) {
1584                 kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
1585                 kvm_run->fail_entry.hardware_entry_failure_reason
1586                         = svm->vmcb->control.exit_code;
1587                 post_kvm_run_save(svm, kvm_run);
1588                 return 0;
1589         }
1590
1591         r = handle_exit(svm, kvm_run);
1592         if (r > 0) {
1593                 if (dm_request_for_irq_injection(svm, kvm_run)) {
1594                         ++vcpu->stat.request_irq_exits;
1595                         post_kvm_run_save(svm, kvm_run);
1596                         kvm_run->exit_reason = KVM_EXIT_INTR;
1597                         return -EINTR;
1598                 }
1599                 kvm_resched(vcpu);
1600                 goto again;
1601         }
1602         post_kvm_run_save(svm, kvm_run);
1603         return r;
1604 }
1605
1606 static void svm_set_cr3(struct kvm_vcpu *vcpu, unsigned long root)
1607 {
1608         struct vcpu_svm *svm = to_svm(vcpu);
1609
1610         svm->vmcb->save.cr3 = root;
1611         force_new_asid(vcpu);
1612
1613         if (vcpu->fpu_active) {
1614                 svm->vmcb->control.intercept_exceptions |= (1 << NM_VECTOR);
1615                 svm->vmcb->save.cr0 |= X86_CR0_TS;
1616                 vcpu->fpu_active = 0;
1617         }
1618 }
1619
1620 static void svm_inject_page_fault(struct kvm_vcpu *vcpu,
1621                                   unsigned long  addr,
1622                                   uint32_t err_code)
1623 {
1624         struct vcpu_svm *svm = to_svm(vcpu);
1625         uint32_t exit_int_info = svm->vmcb->control.exit_int_info;
1626
1627         ++vcpu->stat.pf_guest;
1628
1629         if (is_page_fault(exit_int_info)) {
1630
1631                 svm->vmcb->control.event_inj_err = 0;
1632                 svm->vmcb->control.event_inj =  SVM_EVTINJ_VALID |
1633                                                 SVM_EVTINJ_VALID_ERR |
1634                                                 SVM_EVTINJ_TYPE_EXEPT |
1635                                                 DF_VECTOR;
1636                 return;
1637         }
1638         vcpu->cr2 = addr;
1639         svm->vmcb->save.cr2 = addr;
1640         svm->vmcb->control.event_inj =  SVM_EVTINJ_VALID |
1641                                         SVM_EVTINJ_VALID_ERR |
1642                                         SVM_EVTINJ_TYPE_EXEPT |
1643                                         PF_VECTOR;
1644         svm->vmcb->control.event_inj_err = err_code;
1645 }
1646
1647
1648 static int is_disabled(void)
1649 {
1650         u64 vm_cr;
1651
1652         rdmsrl(MSR_VM_CR, vm_cr);
1653         if (vm_cr & (1 << SVM_VM_CR_SVM_DISABLE))
1654                 return 1;
1655
1656         return 0;
1657 }
1658
1659 static void
1660 svm_patch_hypercall(struct kvm_vcpu *vcpu, unsigned char *hypercall)
1661 {
1662         /*
1663          * Patch in the VMMCALL instruction:
1664          */
1665         hypercall[0] = 0x0f;
1666         hypercall[1] = 0x01;
1667         hypercall[2] = 0xd9;
1668         hypercall[3] = 0xc3;
1669 }
1670
1671 static void svm_check_processor_compat(void *rtn)
1672 {
1673         *(int *)rtn = 0;
1674 }
1675
1676 static struct kvm_arch_ops svm_arch_ops = {
1677         .cpu_has_kvm_support = has_svm,
1678         .disabled_by_bios = is_disabled,
1679         .hardware_setup = svm_hardware_setup,
1680         .hardware_unsetup = svm_hardware_unsetup,
1681         .check_processor_compatibility = svm_check_processor_compat,
1682         .hardware_enable = svm_hardware_enable,
1683         .hardware_disable = svm_hardware_disable,
1684
1685         .vcpu_create = svm_create_vcpu,
1686         .vcpu_free = svm_free_vcpu,
1687
1688         .vcpu_load = svm_vcpu_load,
1689         .vcpu_put = svm_vcpu_put,
1690         .vcpu_decache = svm_vcpu_decache,
1691
1692         .set_guest_debug = svm_guest_debug,
1693         .get_msr = svm_get_msr,
1694         .set_msr = svm_set_msr,
1695         .get_segment_base = svm_get_segment_base,
1696         .get_segment = svm_get_segment,
1697         .set_segment = svm_set_segment,
1698         .get_cs_db_l_bits = svm_get_cs_db_l_bits,
1699         .decache_cr4_guest_bits = svm_decache_cr4_guest_bits,
1700         .set_cr0 = svm_set_cr0,
1701         .set_cr3 = svm_set_cr3,
1702         .set_cr4 = svm_set_cr4,
1703         .set_efer = svm_set_efer,
1704         .get_idt = svm_get_idt,
1705         .set_idt = svm_set_idt,
1706         .get_gdt = svm_get_gdt,
1707         .set_gdt = svm_set_gdt,
1708         .get_dr = svm_get_dr,
1709         .set_dr = svm_set_dr,
1710         .cache_regs = svm_cache_regs,
1711         .decache_regs = svm_decache_regs,
1712         .get_rflags = svm_get_rflags,
1713         .set_rflags = svm_set_rflags,
1714
1715         .invlpg = svm_invlpg,
1716         .tlb_flush = svm_flush_tlb,
1717         .inject_page_fault = svm_inject_page_fault,
1718
1719         .inject_gp = svm_inject_gp,
1720
1721         .run = svm_vcpu_run,
1722         .skip_emulated_instruction = skip_emulated_instruction,
1723         .patch_hypercall = svm_patch_hypercall,
1724 };
1725
1726 static int __init svm_init(void)
1727 {
1728         return kvm_init_arch(&svm_arch_ops, sizeof(struct vcpu_svm),
1729                               THIS_MODULE);
1730 }
1731
1732 static void __exit svm_exit(void)
1733 {
1734         kvm_exit_arch();
1735 }
1736
1737 module_init(svm_init)
1738 module_exit(svm_exit)