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- #ifndef __LINUX_KVM_H
- #define __LINUX_KVM_H
- /*
- * Userspace interface for /dev/kvm - kernel based virtual machine
- *
- * Note: this interface is considered experimental and may change without
- * notice.
- */
- #include <asm/types.h>
- #include <linux/ioctl.h>
- #define KVM_API_VERSION 4
- /*
- * Architectural interrupt line count, and the size of the bitmap needed
- * to hold them.
- */
- #define KVM_NR_INTERRUPTS 256
- #define KVM_IRQ_BITMAP_SIZE_BYTES ((KVM_NR_INTERRUPTS + 7) / 8)
- #define KVM_IRQ_BITMAP_SIZE(type) (KVM_IRQ_BITMAP_SIZE_BYTES / sizeof(type))
- /* for KVM_CREATE_MEMORY_REGION */
- struct kvm_memory_region {
- __u32 slot;
- __u32 flags;
- __u64 guest_phys_addr;
- __u64 memory_size; /* bytes */
- };
- /* for kvm_memory_region::flags */
- #define KVM_MEM_LOG_DIRTY_PAGES 1UL
- #define KVM_EXIT_TYPE_FAIL_ENTRY 1
- #define KVM_EXIT_TYPE_VM_EXIT 2
- enum kvm_exit_reason {
- KVM_EXIT_UNKNOWN = 0,
- KVM_EXIT_EXCEPTION = 1,
- KVM_EXIT_IO = 2,
- KVM_EXIT_CPUID = 3,
- KVM_EXIT_DEBUG = 4,
- KVM_EXIT_HLT = 5,
- KVM_EXIT_MMIO = 6,
- KVM_EXIT_IRQ_WINDOW_OPEN = 7,
- KVM_EXIT_SHUTDOWN = 8,
- };
- /* for KVM_RUN */
- struct kvm_run {
- /* in */
- __u32 emulated; /* skip current instruction */
- __u32 mmio_completed; /* mmio request completed */
- __u8 request_interrupt_window;
- __u8 padding1[7];
- /* out */
- __u32 exit_type;
- __u32 exit_reason;
- __u32 instruction_length;
- __u8 ready_for_interrupt_injection;
- __u8 if_flag;
- __u16 padding2;
- /* in (pre_kvm_run), out (post_kvm_run) */
- __u64 cr8;
- __u64 apic_base;
- union {
- /* KVM_EXIT_UNKNOWN */
- struct {
- __u32 hardware_exit_reason;
- } hw;
- /* KVM_EXIT_EXCEPTION */
- struct {
- __u32 exception;
- __u32 error_code;
- } ex;
- /* KVM_EXIT_IO */
- struct {
- #define KVM_EXIT_IO_IN 0
- #define KVM_EXIT_IO_OUT 1
- __u8 direction;
- __u8 size; /* bytes */
- __u8 string;
- __u8 string_down;
- __u8 rep;
- __u8 pad;
- __u16 port;
- __u64 count;
- union {
- __u64 address;
- __u32 value;
- };
- } io;
- struct {
- } debug;
- /* KVM_EXIT_MMIO */
- struct {
- __u64 phys_addr;
- __u8 data[8];
- __u32 len;
- __u8 is_write;
- } mmio;
- };
- };
- /* 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;
- };
- 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_IRQ_BITMAP_SIZE(__u64)];
- };
- 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];
- };
- /* for KVM_TRANSLATE */
- struct kvm_translation {
- /* in */
- __u64 linear_address;
- /* out */
- __u64 physical_address;
- __u8 valid;
- __u8 writeable;
- __u8 usermode;
- __u8 pad[5];
- };
- /* for KVM_INTERRUPT */
- struct kvm_interrupt {
- /* in */
- __u32 irq;
- };
- struct kvm_breakpoint {
- __u32 enabled;
- __u32 padding;
- __u64 address;
- };
- /* for KVM_DEBUG_GUEST */
- struct kvm_debug_guest {
- /* int */
- __u32 enabled;
- __u32 pad;
- struct kvm_breakpoint breakpoints[4];
- __u32 singlestep;
- };
- /* for KVM_GET_DIRTY_LOG */
- struct kvm_dirty_log {
- __u32 slot;
- __u32 padding;
- union {
- void __user *dirty_bitmap; /* one bit per page */
- __u64 padding;
- };
- };
- #define KVMIO 0xAE
- /*
- * ioctls for /dev/kvm fds:
- */
- #define KVM_GET_API_VERSION _IO(KVMIO, 1)
- #define KVM_CREATE_VM _IO(KVMIO, 2) /* returns a VM fd */
- #define KVM_GET_MSR_INDEX_LIST _IOWR(KVMIO, 15, struct kvm_msr_list)
- /*
- * ioctls for VM fds
- */
- #define KVM_SET_MEMORY_REGION _IOW(KVMIO, 10, struct kvm_memory_region)
- /*
- * KVM_CREATE_VCPU receives as a parameter the vcpu slot, and returns
- * a vcpu fd.
- */
- #define KVM_CREATE_VCPU _IOW(KVMIO, 11, int)
- #define KVM_GET_DIRTY_LOG _IOW(KVMIO, 12, struct kvm_dirty_log)
- /*
- * ioctls for vcpu fds
- */
- #define KVM_RUN _IOWR(KVMIO, 2, struct kvm_run)
- #define KVM_GET_REGS _IOR(KVMIO, 3, struct kvm_regs)
- #define KVM_SET_REGS _IOW(KVMIO, 4, struct kvm_regs)
- #define KVM_GET_SREGS _IOR(KVMIO, 5, struct kvm_sregs)
- #define KVM_SET_SREGS _IOW(KVMIO, 6, struct kvm_sregs)
- #define KVM_TRANSLATE _IOWR(KVMIO, 7, struct kvm_translation)
- #define KVM_INTERRUPT _IOW(KVMIO, 8, struct kvm_interrupt)
- #define KVM_DEBUG_GUEST _IOW(KVMIO, 9, struct kvm_debug_guest)
- #define KVM_GET_MSRS _IOWR(KVMIO, 13, struct kvm_msrs)
- #define KVM_SET_MSRS _IOW(KVMIO, 14, struct kvm_msrs)
- #endif
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