arch/ia64/include/asm/kvm_host.h

   1 /*
   2  * kvm_host.h: used for kvm module, and hold ia64-specific sections.
   3  *
   4  * Copyright (C) 2007, Intel Corporation.
   5  *
   6  * Xiantao Zhang <xiantao.zhang@intel.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms and conditions of the GNU General Public License,
  10  * version 2, as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  19  * Place - Suite 330, Boston, MA 02111-1307 USA.
  20  *
  21  */
  22
  23 #ifndef __ASM_KVM_HOST_H
  24 #define __ASM_KVM_HOST_H
  25
  26 #define KVM_MEMORY_SLOTS 32
  27 /* memory slots that does not exposed to userspace */
  28 #define KVM_PRIVATE_MEM_SLOTS 4
  29
  30 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
  31
  32 /* define exit reasons from vmm to kvm*/
  33 #define EXIT_REASON_VM_PANIC            0
  34 #define EXIT_REASON_MMIO_INSTRUCTION    1
  35 #define EXIT_REASON_PAL_CALL            2
  36 #define EXIT_REASON_SAL_CALL            3
  37 #define EXIT_REASON_SWITCH_RR6          4
  38 #define EXIT_REASON_VM_DESTROY          5
  39 #define EXIT_REASON_EXTERNAL_INTERRUPT  6
  40 #define EXIT_REASON_IPI                 7
  41 #define EXIT_REASON_PTC_G               8
  42 #define EXIT_REASON_DEBUG               20
  43
  44 /*Define vmm address space and vm data space.*/
  45 #define KVM_VMM_SIZE (__IA64_UL_CONST(16)<<20)
  46 #define KVM_VMM_SHIFT 24
  47 #define KVM_VMM_BASE 0xD000000000000000
  48 #define VMM_SIZE (__IA64_UL_CONST(8)<<20)
  49
  50 /*
  51  * Define vm_buffer, used by PAL Services, base address.
  52  * Note: vm_buffer is in the VMM-BLOCK, the size must be < 8M
  53  */
  54 #define KVM_VM_BUFFER_BASE (KVM_VMM_BASE + VMM_SIZE)
  55 #define KVM_VM_BUFFER_SIZE (__IA64_UL_CONST(8)<<20)
  56
  57 /*
  58  * kvm guest's data area looks as follow:
  59  *
  60  *            +----------------------+  ------- KVM_VM_DATA_SIZE
  61  *            |     vcpu[n]'s data   |   |     ___________________KVM_STK_OFFSET
  62  *            |                      |   |    /                   |
  63  *            |        ..........    |   |   /vcpu's struct&stack |
  64  *            |        ..........    |   |  /---------------------|---- 0
  65  *            |     vcpu[5]'s data   |   | /       vpd            |
  66  *            |     vcpu[4]'s data   |   |/-----------------------|
  67  *            |     vcpu[3]'s data   |   /         vtlb           |
  68  *            |     vcpu[2]'s data   |  /|------------------------|
  69  *            |     vcpu[1]'s data   |/  |         vhpt           |
  70  *            |     vcpu[0]'s data   |____________________________|
  71  *            +----------------------+   |
  72  *            |    memory dirty log  |   |
  73  *            +----------------------+   |
  74  *            |    vm's data struct  |   |
  75  *            +----------------------+   |
  76  *            |                      |   |
  77  *            |                      |   |
  78  *            |                      |   |
  79  *            |                      |   |
  80  *            |                      |   |
  81  *            |                      |   |
  82  *            |                      |   |
  83  *            |   vm's p2m table  |      |
  84  *            |                      |   |
  85  *            |                      |   |
  86  *            |                      |   |  |
  87  * vm's data->|                      |   |  |
  88  *            +----------------------+ ------- 0
  89  * To support large memory, needs to increase the size of p2m.
  90  * To support more vcpus, needs to ensure it has enough space to
  91  * hold vcpus' data.
  92  */
  93
  94 #define KVM_VM_DATA_SHIFT       26
  95 #define KVM_VM_DATA_SIZE        (__IA64_UL_CONST(1) << KVM_VM_DATA_SHIFT)
  96 #define KVM_VM_DATA_BASE        (KVM_VMM_BASE + KVM_VM_DATA_SIZE)
  97
  98 #define KVM_P2M_BASE            KVM_VM_DATA_BASE
  99 #define KVM_P2M_SIZE            (__IA64_UL_CONST(24) << 20)
 100
 101 #define VHPT_SHIFT              16
 102 #define VHPT_SIZE               (__IA64_UL_CONST(1) << VHPT_SHIFT)
 103 #define VHPT_NUM_ENTRIES        (__IA64_UL_CONST(1) << (VHPT_SHIFT-5))
 104
 105 #define VTLB_SHIFT              16
 106 #define VTLB_SIZE               (__IA64_UL_CONST(1) << VTLB_SHIFT)
 107 #define VTLB_NUM_ENTRIES        (1UL << (VHPT_SHIFT-5))
 108
 109 #define VPD_SHIFT               16
 110 #define VPD_SIZE                (__IA64_UL_CONST(1) << VPD_SHIFT)
 111
 112 #define VCPU_STRUCT_SHIFT       16
 113 #define VCPU_STRUCT_SIZE        (__IA64_UL_CONST(1) << VCPU_STRUCT_SHIFT)
 114
 115 /*
 116  * This must match KVM_IA64_VCPU_STACK_{SHIFT,SIZE} arch/ia64/include/asm/kvm.h
 117  */
 118 #define KVM_STK_SHIFT           16
 119 #define KVM_STK_OFFSET          (__IA64_UL_CONST(1)<< KVM_STK_SHIFT)
 120
 121 #define KVM_VM_STRUCT_SHIFT     19
 122 #define KVM_VM_STRUCT_SIZE      (__IA64_UL_CONST(1) << KVM_VM_STRUCT_SHIFT)
 123
 124 #define KVM_MEM_DIRY_LOG_SHIFT  19
 125 #define KVM_MEM_DIRTY_LOG_SIZE (__IA64_UL_CONST(1) << KVM_MEM_DIRY_LOG_SHIFT)
 126
 127 #ifndef __ASSEMBLY__
 128
 129 /*Define the max vcpus and memory for Guests.*/
 130 #define KVM_MAX_VCPUS   (KVM_VM_DATA_SIZE - KVM_P2M_SIZE - KVM_VM_STRUCT_SIZE -\
 131                         KVM_MEM_DIRTY_LOG_SIZE) / sizeof(struct kvm_vcpu_data)
 132 #define KVM_MAX_MEM_SIZE (KVM_P2M_SIZE >> 3 << PAGE_SHIFT)
 133
 134 #define VMM_LOG_LEN 256
 135
 136 #include <linux/types.h>
 137 #include <linux/mm.h>
 138 #include <linux/kvm.h>
 139 #include <linux/kvm_para.h>
 140 #include <linux/kvm_types.h>
 141
 142 #include <asm/pal.h>
 143 #include <asm/sal.h>
 144 #include <asm/page.h>
 145
 146 struct kvm_vcpu_data {
 147         char vcpu_vhpt[VHPT_SIZE];
 148         char vcpu_vtlb[VTLB_SIZE];
 149         char vcpu_vpd[VPD_SIZE];
 150         char vcpu_struct[VCPU_STRUCT_SIZE];
 151 };
 152
 153 struct kvm_vm_data {
 154         char kvm_p2m[KVM_P2M_SIZE];
 155         char kvm_vm_struct[KVM_VM_STRUCT_SIZE];
 156         char kvm_mem_dirty_log[KVM_MEM_DIRTY_LOG_SIZE];
 157         struct kvm_vcpu_data vcpu_data[KVM_MAX_VCPUS];
 158 };
 159
 160 #define VCPU_BASE(n)    (KVM_VM_DATA_BASE + \
 161                                 offsetof(struct kvm_vm_data, vcpu_data[n]))
 162 #define KVM_VM_BASE     (KVM_VM_DATA_BASE + \
 163                                 offsetof(struct kvm_vm_data, kvm_vm_struct))
 164 #define KVM_MEM_DIRTY_LOG_BASE  KVM_VM_DATA_BASE + \
 165                                 offsetof(struct kvm_vm_data, kvm_mem_dirty_log)
 166
 167 #define VHPT_BASE(n) (VCPU_BASE(n) + offsetof(struct kvm_vcpu_data, vcpu_vhpt))
 168 #define VTLB_BASE(n) (VCPU_BASE(n) + offsetof(struct kvm_vcpu_data, vcpu_vtlb))
 169 #define VPD_BASE(n)  (VCPU_BASE(n) + offsetof(struct kvm_vcpu_data, vcpu_vpd))
 170 #define VCPU_STRUCT_BASE(n)     (VCPU_BASE(n) + \
 171                                 offsetof(struct kvm_vcpu_data, vcpu_struct))
 172
 173 /*IO section definitions*/
 174 #define IOREQ_READ      1
 175 #define IOREQ_WRITE     0
 176
 177 #define STATE_IOREQ_NONE        0
 178 #define STATE_IOREQ_READY       1
 179 #define STATE_IOREQ_INPROCESS   2
 180 #define STATE_IORESP_READY      3
 181
 182 /*Guest Physical address layout.*/
 183 #define GPFN_MEM        (0UL << 60) /* Guest pfn is normal mem */
 184 #define GPFN_FRAME_BUFFER   (1UL << 60) /* VGA framebuffer */
 185 #define GPFN_LOW_MMIO       (2UL << 60) /* Low MMIO range */
 186 #define GPFN_PIB        (3UL << 60) /* PIB base */
 187 #define GPFN_IOSAPIC        (4UL << 60) /* IOSAPIC base */
 188 #define GPFN_LEGACY_IO      (5UL << 60) /* Legacy I/O base */
 189 #define GPFN_GFW        (6UL << 60) /* Guest Firmware */
 190 #define GPFN_PHYS_MMIO      (7UL << 60) /* Directed MMIO Range */
 191
 192 #define GPFN_IO_MASK        (7UL << 60) /* Guest pfn is I/O type */
 193 #define GPFN_INV_MASK       (1UL << 63) /* Guest pfn is invalid */
 194 #define INVALID_MFN       (~0UL)
 195 #define MEM_G   (1UL << 30)
 196 #define MEM_M   (1UL << 20)
 197 #define MMIO_START       (3 * MEM_G)
 198 #define MMIO_SIZE        (512 * MEM_M)
 199 #define VGA_IO_START     0xA0000UL
 200 #define VGA_IO_SIZE      0x20000
 201 #define LEGACY_IO_START  (MMIO_START + MMIO_SIZE)
 202 #define LEGACY_IO_SIZE   (64 * MEM_M)
 203 #define IO_SAPIC_START   0xfec00000UL
 204 #define IO_SAPIC_SIZE    0x100000
 205 #define PIB_START 0xfee00000UL
 206 #define PIB_SIZE 0x200000
 207 #define GFW_START        (4 * MEM_G - 16 * MEM_M)
 208 #define GFW_SIZE         (16 * MEM_M)
 209
 210 /*Deliver mode, defined for ioapic.c*/
 211 #define dest_Fixed IOSAPIC_FIXED
 212 #define dest_LowestPrio IOSAPIC_LOWEST_PRIORITY
 213
 214 #define NMI_VECTOR                      2
 215 #define ExtINT_VECTOR                   0
 216 #define NULL_VECTOR                     (-1)
 217 #define IA64_SPURIOUS_INT_VECTOR        0x0f
 218
 219 #define VCPU_LID(v) (((u64)(v)->vcpu_id) << 24)
 220
 221 /*
 222  *Delivery mode
 223  */
 224 #define SAPIC_DELIV_SHIFT      8
 225 #define SAPIC_FIXED            0x0
 226 #define SAPIC_LOWEST_PRIORITY  0x1
 227 #define SAPIC_PMI              0x2
 228 #define SAPIC_NMI              0x4
 229 #define SAPIC_INIT             0x5
 230 #define SAPIC_EXTINT           0x7
 231
 232 /*
 233  * vcpu->requests bit members for arch
 234  */
 235 #define KVM_REQ_PTC_G           32
 236 #define KVM_REQ_RESUME          33
 237
 238 #define KVM_HPAGE_GFN_SHIFT(x)  0
 239 #define KVM_NR_PAGE_SIZES       1
 240 #define KVM_PAGES_PER_HPAGE(x)  1
 241
 242 struct kvm;
 243 struct kvm_vcpu;
 244
 245 struct kvm_mmio_req {
 246         uint64_t addr;          /*  physical address            */
 247         uint64_t size;          /*  size in bytes               */
 248         uint64_t data;          /*  data (or paddr of data)     */
 249         uint8_t state:4;
 250         uint8_t dir:1;          /*  1=read, 0=write             */
 251 };
 252
 253 /*Pal data struct */
 254 struct kvm_pal_call{
 255         /*In area*/
 256         uint64_t gr28;
 257         uint64_t gr29;
 258         uint64_t gr30;
 259         uint64_t gr31;
 260         /*Out area*/
 261         struct ia64_pal_retval ret;
 262 };
 263
 264 /* Sal data structure */
 265 struct kvm_sal_call{
 266         /*In area*/
 267         uint64_t in0;
 268         uint64_t in1;
 269         uint64_t in2;
 270         uint64_t in3;
 271         uint64_t in4;
 272         uint64_t in5;
 273         uint64_t in6;
 274         uint64_t in7;
 275         struct sal_ret_values ret;
 276 };
 277
 278 /*Guest change rr6*/
 279 struct kvm_switch_rr6 {
 280         uint64_t old_rr;
 281         uint64_t new_rr;
 282 };
 283
 284 union ia64_ipi_a{
 285         unsigned long val;
 286         struct {
 287                 unsigned long rv  : 3;
 288                 unsigned long ir  : 1;
 289                 unsigned long eid : 8;
 290                 unsigned long id  : 8;
 291                 unsigned long ib_base : 44;
 292         };
 293 };
 294
 295 union ia64_ipi_d {
 296         unsigned long val;
 297         struct {
 298                 unsigned long vector : 8;
 299                 unsigned long dm  : 3;
 300                 unsigned long ig  : 53;
 301         };
 302 };
 303
 304 /*ipi check exit data*/
 305 struct kvm_ipi_data{
 306         union ia64_ipi_a addr;
 307         union ia64_ipi_d data;
 308 };
 309
 310 /*global purge data*/
 311 struct kvm_ptc_g {
 312         unsigned long vaddr;
 313         unsigned long rr;
 314         unsigned long ps;
 315         struct kvm_vcpu *vcpu;
 316 };
 317
 318 /*Exit control data */
 319 struct exit_ctl_data{
 320         uint32_t exit_reason;
 321         uint32_t vm_status;
 322         union {
 323                 struct kvm_mmio_req     ioreq;
 324                 struct kvm_pal_call     pal_data;
 325                 struct kvm_sal_call     sal_data;
 326                 struct kvm_switch_rr6   rr_data;
 327                 struct kvm_ipi_data     ipi_data;
 328                 struct kvm_ptc_g        ptc_g_data;
 329         } u;
 330 };
 331
 332 union pte_flags {
 333         unsigned long val;
 334         struct {
 335                 unsigned long p    :  1; /*0      */
 336                 unsigned long      :  1; /* 1     */
 337                 unsigned long ma   :  3; /* 2-4   */
 338                 unsigned long a    :  1; /* 5     */
 339                 unsigned long d    :  1; /* 6     */
 340                 unsigned long pl   :  2; /* 7-8   */
 341                 unsigned long ar   :  3; /* 9-11  */
 342                 unsigned long ppn  : 38; /* 12-49 */
 343                 unsigned long      :  2; /* 50-51 */
 344                 unsigned long ed   :  1; /* 52    */
 345         };
 346 };
 347
 348 union ia64_pta {
 349         unsigned long val;
 350         struct {
 351                 unsigned long ve : 1;
 352                 unsigned long reserved0 : 1;
 353                 unsigned long size : 6;
 354                 unsigned long vf : 1;
 355                 unsigned long reserved1 : 6;
 356                 unsigned long base : 49;
 357         };
 358 };
 359
 360 struct thash_cb {
 361         /* THASH base information */
 362         struct thash_data       *hash; /* hash table pointer */
 363         union ia64_pta          pta;
 364         int           num;
 365 };
 366
 367 struct kvm_vcpu_stat {
 368 };
 369
 370 struct kvm_vcpu_arch {
 371         int launched;
 372         int last_exit;
 373         int last_run_cpu;
 374         int vmm_tr_slot;
 375         int vm_tr_slot;
 376         int sn_rtc_tr_slot;
 377
 378 #define KVM_MP_STATE_RUNNABLE          0
 379 #define KVM_MP_STATE_UNINITIALIZED     1
 380 #define KVM_MP_STATE_INIT_RECEIVED     2
 381 #define KVM_MP_STATE_HALTED            3
 382         int mp_state;
 383
 384 #define MAX_PTC_G_NUM                   3
 385         int ptc_g_count;
 386         struct kvm_ptc_g ptc_g_data[MAX_PTC_G_NUM];
 387
 388         /*halt timer to wake up sleepy vcpus*/
 389         struct hrtimer hlt_timer;
 390         long ht_active;
 391
 392         struct kvm_lapic *apic;    /* kernel irqchip context */
 393         struct vpd *vpd;
 394
 395         /* Exit data for vmm_transition*/
 396         struct exit_ctl_data exit_data;
 397
 398         cpumask_t cache_coherent_map;
 399
 400         unsigned long vmm_rr;
 401         unsigned long host_rr6;
 402         unsigned long psbits[8];
 403         unsigned long cr_iipa;
 404         unsigned long cr_isr;
 405         unsigned long vsa_base;
 406         unsigned long dirty_log_lock_pa;
 407         unsigned long __gp;
 408         /* TR and TC.  */
 409         struct thash_data itrs[NITRS];
 410         struct thash_data dtrs[NDTRS];
 411         /* Bit is set if there is a tr/tc for the region.  */
 412         unsigned char itr_regions;
 413         unsigned char dtr_regions;
 414         unsigned char tc_regions;
 415         /* purge all */
 416         unsigned long ptce_base;
 417         unsigned long ptce_count[2];
 418         unsigned long ptce_stride[2];
 419         /* itc/itm */
 420         unsigned long last_itc;
 421         long itc_offset;
 422         unsigned long itc_check;
 423         unsigned long timer_check;
 424         unsigned int timer_pending;
 425         unsigned int timer_fired;
 426
 427         unsigned long vrr[8];
 428         unsigned long ibr[8];
 429         unsigned long dbr[8];
 430         unsigned long insvc[4];         /* Interrupt in service.  */
 431         unsigned long xtp;
 432
 433         unsigned long metaphysical_rr0; /* from kvm_arch (so is pinned) */
 434         unsigned long metaphysical_rr4; /* from kvm_arch (so is pinned) */
 435         unsigned long metaphysical_saved_rr0; /* from kvm_arch          */
 436         unsigned long metaphysical_saved_rr4; /* from kvm_arch          */
 437         unsigned long fp_psr;       /*used for lazy float register */
 438         unsigned long saved_gp;
 439         /*for phycial  emulation */
 440         int mode_flags;
 441         struct thash_cb vtlb;
 442         struct thash_cb vhpt;
 443         char irq_check;
 444         char irq_new_pending;
 445
 446         unsigned long opcode;
 447         unsigned long cause;
 448         char log_buf[VMM_LOG_LEN];
 449         union context host;
 450         union context guest;
 451 };
 452
 453 struct kvm_vm_stat {
 454         u64 remote_tlb_flush;
 455 };
 456
 457 struct kvm_sal_data {
 458         unsigned long boot_ip;
 459         unsigned long boot_gp;
 460 };
 461
 462 struct kvm_arch {
 463         spinlock_t dirty_log_lock;
 464
 465         unsigned long   vm_base;
 466         unsigned long   metaphysical_rr0;
 467         unsigned long   metaphysical_rr4;
 468         unsigned long   vmm_init_rr;
 469
 470         int             is_sn2;
 471
 472         struct kvm_ioapic *vioapic;
 473         struct kvm_vm_stat stat;
 474         struct kvm_sal_data rdv_sal_data;
 475
 476         struct list_head assigned_dev_head;
 477         struct iommu_domain *iommu_domain;
 478         int iommu_flags;
 479
 480         unsigned long irq_sources_bitmap;
 481         unsigned long irq_states[KVM_IOAPIC_NUM_PINS];
 482 };
 483
 484 union cpuid3_t {
 485         u64 value;
 486         struct {
 487                 u64 number : 8;
 488                 u64 revision : 8;
 489                 u64 model : 8;
 490                 u64 family : 8;
 491                 u64 archrev : 8;
 492                 u64 rv : 24;
 493         };
 494 };
 495
 496 struct kvm_pt_regs {
 497         /* The following registers are saved by SAVE_MIN: */
 498         unsigned long b6;  /* scratch */
 499         unsigned long b7;  /* scratch */
 500
 501         unsigned long ar_csd; /* used by cmp8xchg16 (scratch) */
 502         unsigned long ar_ssd; /* reserved for future use (scratch) */
 503
 504         unsigned long r8;  /* scratch (return value register 0) */
 505         unsigned long r9;  /* scratch (return value register 1) */
 506         unsigned long r10; /* scratch (return value register 2) */
 507         unsigned long r11; /* scratch (return value register 3) */
 508
 509         unsigned long cr_ipsr; /* interrupted task's psr */
 510         unsigned long cr_iip;  /* interrupted task's instruction pointer */
 511         unsigned long cr_ifs;  /* interrupted task's function state */
 512
 513         unsigned long ar_unat; /* interrupted task's NaT register (preserved) */
 514         unsigned long ar_pfs;  /* prev function state  */
 515         unsigned long ar_rsc;  /* RSE configuration */
 516         /* The following two are valid only if cr_ipsr.cpl > 0: */
 517         unsigned long ar_rnat;  /* RSE NaT */
 518         unsigned long ar_bspstore; /* RSE bspstore */
 519
 520         unsigned long pr;  /* 64 predicate registers (1 bit each) */
 521         unsigned long b0;  /* return pointer (bp) */
 522         unsigned long loadrs;  /* size of dirty partition << 16 */
 523
 524         unsigned long r1;  /* the gp pointer */
 525         unsigned long r12; /* interrupted task's memory stack pointer */
 526         unsigned long r13; /* thread pointer */
 527
 528         unsigned long ar_fpsr;  /* floating point status (preserved) */
 529         unsigned long r15;  /* scratch */
 530
 531         /* The remaining registers are NOT saved for system calls.  */
 532         unsigned long r14;  /* scratch */
 533         unsigned long r2;  /* scratch */
 534         unsigned long r3;  /* scratch */
 535         unsigned long r16;  /* scratch */
 536         unsigned long r17;  /* scratch */
 537         unsigned long r18;  /* scratch */
 538         unsigned long r19;  /* scratch */
 539         unsigned long r20;  /* scratch */
 540         unsigned long r21;  /* scratch */
 541         unsigned long r22;  /* scratch */
 542         unsigned long r23;  /* scratch */
 543         unsigned long r24;  /* scratch */
 544         unsigned long r25;  /* scratch */
 545         unsigned long r26;  /* scratch */
 546         unsigned long r27;  /* scratch */
 547         unsigned long r28;  /* scratch */
 548         unsigned long r29;  /* scratch */
 549         unsigned long r30;  /* scratch */
 550         unsigned long r31;  /* scratch */
 551         unsigned long ar_ccv;  /* compare/exchange value (scratch) */
 552
 553         /*
 554          * Floating point registers that the kernel considers scratch:
 555          */
 556         struct ia64_fpreg f6;  /* scratch */
 557         struct ia64_fpreg f7;  /* scratch */
 558         struct ia64_fpreg f8;  /* scratch */
 559         struct ia64_fpreg f9;  /* scratch */
 560         struct ia64_fpreg f10;  /* scratch */
 561         struct ia64_fpreg f11;  /* scratch */
 562
 563         unsigned long r4;  /* preserved */
 564         unsigned long r5;  /* preserved */
 565         unsigned long r6;  /* preserved */
 566         unsigned long r7;  /* preserved */
 567         unsigned long eml_unat;    /* used for emulating instruction */
 568         unsigned long pad0;     /* alignment pad */
 569 };
 570
 571 static inline struct kvm_pt_regs *vcpu_regs(struct kvm_vcpu *v)
 572 {
 573         return (struct kvm_pt_regs *) ((unsigned long) v + KVM_STK_OFFSET) - 1;
 574 }
 575
 576 typedef int kvm_vmm_entry(void);
 577 typedef void kvm_tramp_entry(union context *host, union context *guest);
 578
 579 struct kvm_vmm_info{
 580         struct module   *module;
 581         kvm_vmm_entry   *vmm_entry;
 582         kvm_tramp_entry *tramp_entry;
 583         unsigned long   vmm_ivt;
 584         unsigned long   patch_mov_ar;
 585         unsigned long   patch_mov_ar_sn2;
 586 };
 587
 588 int kvm_highest_pending_irq(struct kvm_vcpu *vcpu);
 589 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
 590 int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
 591 void kvm_sal_emul(struct kvm_vcpu *vcpu);
 592
 593 #endif /* __ASSEMBLY__*/
 594
 595 #endif