kvm.h

Go to the documentation of this file.

#ifndef _ASM_X86_KVM_H
#define _ASM_X86_KVM_H

/*
 * KVM x86 specific structures and definitions
 *
 */

#include <linux/types.h>
#include <linux/ioctl.h>

#define DE_VECTOR 0
#define DB_VECTOR 1
#define BP_VECTOR 3
#define OF_VECTOR 4
#define BR_VECTOR 5
#define UD_VECTOR 6
#define NM_VECTOR 7
#define DF_VECTOR 8
#define TS_VECTOR 10
#define NP_VECTOR 11
#define SS_VECTOR 12
#define GP_VECTOR 13
#define PF_VECTOR 14
#define MF_VECTOR 16
#define MC_VECTOR 18

/* Select x86 specific features in <linux/kvm.h> */
#define __KVM_HAVE_PIT
#define __KVM_HAVE_IOAPIC
#define __KVM_HAVE_IRQ_LINE
#define __KVM_HAVE_DEVICE_ASSIGNMENT
#define __KVM_HAVE_MSI
#define __KVM_HAVE_USER_NMI
#define __KVM_HAVE_GUEST_DEBUG
#define __KVM_HAVE_MSIX
#define __KVM_HAVE_MCE
#define __KVM_HAVE_PIT_STATE2
#define __KVM_HAVE_XEN_HVM
#define __KVM_HAVE_VCPU_EVENTS
#define __KVM_HAVE_DEBUGREGS
#define __KVM_HAVE_XSAVE
#define __KVM_HAVE_XCRS
#define __KVM_HAVE_READONLY_MEM

/* Architectural interrupt line count. */
#define KVM_NR_INTERRUPTS 256

struct kvm_memory_alias {
    __u32 slot;  /* this has a different namespace than memory slots */
    __u32 flags;
    __u64 guest_phys_addr;
    __u64 memory_size;
    __u64 target_phys_addr;
};

/* for KVM_GET_IRQCHIP and KVM_SET_IRQCHIP */
struct kvm_pic_state {
    __u8 last_irr;  /* edge detection */
    __u8 irr;       /* interrupt request register */
    __u8 imr;       /* interrupt mask register */
    __u8 isr;       /* interrupt service register */
    __u8 priority_add;  /* highest irq priority */
    __u8 irq_base;
    __u8 read_reg_select;
    __u8 poll;
    __u8 special_mask;
    __u8 init_state;
    __u8 auto_eoi;
    __u8 rotate_on_auto_eoi;
    __u8 special_fully_nested_mode;
    __u8 init4;     /* true if 4 byte init */
    __u8 elcr;      /* PIIX edge/trigger selection */
    __u8 elcr_mask;
};

#define KVM_IOAPIC_NUM_PINS  24
struct kvm_ioapic_state {
    __u64 base_address;
    __u32 ioregsel;
    __u32 id;
    __u32 irr;
    __u32 pad;
    union {
        __u64 bits;
        struct {
            __u8 vector;
            __u8 delivery_mode:3;
            __u8 dest_mode:1;
            __u8 delivery_status:1;
            __u8 polarity:1;
            __u8 remote_irr:1;
            __u8 trig_mode:1;
            __u8 mask:1;
            __u8 reserve:7;
            __u8 reserved[4];
            __u8 dest_id;
        } fields;
    } redirtbl[KVM_IOAPIC_NUM_PINS];
};

#define KVM_IRQCHIP_PIC_MASTER   0
#define KVM_IRQCHIP_PIC_SLAVE    1
#define KVM_IRQCHIP_IOAPIC       2
#define KVM_NR_IRQCHIPS          3

/* for KVM_GET_REGS and KVM_SET_REGS */
struct kvm_regs {
    /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
    __u64 rax, rbx, rcx, rdx;
    __u64 rsi, rdi, rsp, rbp;
    __u64 r8,  r9,  r10, r11;
    __u64 r12, r13, r14, r15;
    __u64 rip, rflags;
};

/* for KVM_GET_LAPIC and KVM_SET_LAPIC */
#define KVM_APIC_REG_SIZE 0x400
struct kvm_lapic_state {
    char regs[KVM_APIC_REG_SIZE];
};

struct kvm_segment {
    __u64 base;
    __u32 limit;
    __u16 selector;
    __u8  type;
    __u8  present, dpl, db, s, l, g, avl;
    __u8  unusable;
    __u8  padding;
};

struct kvm_dtable {
    __u64 base;
    __u16 limit;
    __u16 padding[3];
};


/* for KVM_GET_SREGS and KVM_SET_SREGS */
struct kvm_sregs {
    /* out (KVM_GET_SREGS) / in (KVM_SET_SREGS) */
    struct kvm_segment cs, ds, es, fs, gs, ss;
    struct kvm_segment tr, ldt;
    struct kvm_dtable gdt, idt;
    __u64 cr0, cr2, cr3, cr4, cr8;
    __u64 efer;
    __u64 apic_base;
    __u64 interrupt_bitmap[(KVM_NR_INTERRUPTS + 63) / 64];
};

/* for KVM_GET_FPU and KVM_SET_FPU */
struct kvm_fpu {
    __u8  fpr[8][16];
    __u16 fcw;
    __u16 fsw;
    __u8  ftwx;  /* in fxsave format */
    __u8  pad1;
    __u16 last_opcode;
    __u64 last_ip;
    __u64 last_dp;
    __u8  xmm[16][16];
    __u32 mxcsr;
    __u32 pad2;
};

struct kvm_msr_entry {
    __u32 index;
    __u32 reserved;
    __u64 data;
};

/* for KVM_GET_MSRS and KVM_SET_MSRS */
struct kvm_msrs {
    __u32 nmsrs; /* number of msrs in entries */
    __u32 pad;

    struct kvm_msr_entry entries[0];
};

/* for KVM_GET_MSR_INDEX_LIST */
struct kvm_msr_list {
    __u32 nmsrs; /* number of msrs in entries */
    __u32 indices[0];
};


struct kvm_cpuid_entry {
    __u32 function;
    __u32 eax;
    __u32 ebx;
    __u32 ecx;
    __u32 edx;
    __u32 padding;
};

/* for KVM_SET_CPUID */
struct kvm_cpuid {
    __u32 nent;
    __u32 padding;
    struct kvm_cpuid_entry entries[0];
};

struct kvm_cpuid_entry2 {
    __u32 function;
    __u32 index;
    __u32 flags;
    __u32 eax;
    __u32 ebx;
    __u32 ecx;
    __u32 edx;
    __u32 padding[3];
};

#define KVM_CPUID_FLAG_SIGNIFCANT_INDEX 1
#define KVM_CPUID_FLAG_STATEFUL_FUNC    2
#define KVM_CPUID_FLAG_STATE_READ_NEXT  4

/* for KVM_SET_CPUID2 */
struct kvm_cpuid2 {
    __u32 nent;
    __u32 padding;
    struct kvm_cpuid_entry2 entries[0];
};

/* for KVM_GET_PIT and KVM_SET_PIT */
struct kvm_pit_channel_state {
    __u32 count; /* can be 65536 */
    __u16 latched_count;
    __u8 count_latched;
    __u8 status_latched;
    __u8 status;
    __u8 read_state;
    __u8 write_state;
    __u8 write_latch;
    __u8 rw_mode;
    __u8 mode;
    __u8 bcd;
    __u8 gate;
    __s64 count_load_time;
};

struct kvm_debug_exit_arch {
    __u32 exception;
    __u32 pad;
    __u64 pc;
    __u64 dr6;
    __u64 dr7;
};

#define KVM_GUESTDBG_USE_SW_BP      0x00010000
#define KVM_GUESTDBG_USE_HW_BP      0x00020000
#define KVM_GUESTDBG_INJECT_DB      0x00040000
#define KVM_GUESTDBG_INJECT_BP      0x00080000

/* for KVM_SET_GUEST_DEBUG */
struct kvm_guest_debug_arch {
    __u64 debugreg[8];
};

struct kvm_pit_state {
    struct kvm_pit_channel_state channels[3];
};

#define KVM_PIT_FLAGS_HPET_LEGACY  0x00000001

struct kvm_pit_state2 {
    struct kvm_pit_channel_state channels[3];
    __u32 flags;
    __u32 reserved[9];
};

struct kvm_reinject_control {
    __u8 pit_reinject;
    __u8 reserved[31];
};

/* When set in flags, include corresponding fields on KVM_SET_VCPU_EVENTS */
#define KVM_VCPUEVENT_VALID_NMI_PENDING 0x00000001
#define KVM_VCPUEVENT_VALID_SIPI_VECTOR 0x00000002
#define KVM_VCPUEVENT_VALID_SHADOW  0x00000004

/* Interrupt shadow states */
#define KVM_X86_SHADOW_INT_MOV_SS   0x01
#define KVM_X86_SHADOW_INT_STI      0x02

/* for KVM_GET/SET_VCPU_EVENTS */
struct kvm_vcpu_events {
    struct {
        __u8 injected;
        __u8 nr;
        __u8 has_error_code;
        __u8 pad;
        __u32 error_code;
    } exception;
    struct {
        __u8 injected;
        __u8 nr;
        __u8 soft;
        __u8 shadow;
    } interrupt;
    struct {
        __u8 injected;
        __u8 pending;
        __u8 masked;
        __u8 pad;
    } nmi;
    __u32 sipi_vector;
    __u32 flags;
    __u32 reserved[10];
};

/* for KVM_GET/SET_DEBUGREGS */
struct kvm_debugregs {
    __u64 db[4];
    __u64 dr6;
    __u64 dr7;
    __u64 flags;
    __u64 reserved[9];
};

/* for KVM_CAP_XSAVE */
struct kvm_xsave {
    __u32 region[1024];
};

#define KVM_MAX_XCRS    16

struct kvm_xcr {
    __u32 xcr;
    __u32 reserved;
    __u64 value;
};

struct kvm_xcrs {
    __u32 nr_xcrs;
    __u32 flags;
    struct kvm_xcr xcrs[KVM_MAX_XCRS];
    __u64 padding[16];
};

/* definition of registers in kvm_run */
struct kvm_sync_regs {
};

#endif /* _ASM_X86_KVM_H */