5 * Userspace interface for /dev/kvm - kernel based virtual machine
7 * Note: this interface is considered experimental and may change without
11 #include <asm/types.h>
12 #include <linux/ioctl.h>
14 #define KVM_API_VERSION 2
17 * Architectural interrupt line count, and the size of the bitmap needed
20 #define KVM_NR_INTERRUPTS 256
21 #define KVM_IRQ_BITMAP_SIZE_BYTES ((KVM_NR_INTERRUPTS + 7) / 8)
22 #define KVM_IRQ_BITMAP_SIZE(type) (KVM_IRQ_BITMAP_SIZE_BYTES / sizeof(type))
25 /* for KVM_CREATE_MEMORY_REGION */
26 struct kvm_memory_region {
29 __u64 guest_phys_addr;
30 __u64 memory_size; /* bytes */
33 /* for kvm_memory_region::flags */
34 #define KVM_MEM_LOG_DIRTY_PAGES 1UL
37 #define KVM_EXIT_TYPE_FAIL_ENTRY 1
38 #define KVM_EXIT_TYPE_VM_EXIT 2
40 enum kvm_exit_reason {
42 KVM_EXIT_EXCEPTION = 1,
48 KVM_EXIT_IRQ_WINDOW_OPEN = 7,
55 __u32 emulated; /* skip current instruction */
56 __u32 mmio_completed; /* mmio request completed */
57 __u8 request_interrupt_window;
63 __u32 instruction_length;
64 __u8 ready_for_interrupt_injection;
71 /* KVM_EXIT_UNKNOWN */
73 __u32 hardware_exit_reason;
75 /* KVM_EXIT_EXCEPTION */
82 #define KVM_EXIT_IO_IN 0
83 #define KVM_EXIT_IO_OUT 1
85 __u8 size; /* bytes */
109 /* for KVM_GET_REGS and KVM_SET_REGS */
115 /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
116 __u64 rax, rbx, rcx, rdx;
117 __u64 rsi, rdi, rsp, rbp;
118 __u64 r8, r9, r10, r11;
119 __u64 r12, r13, r14, r15;
128 __u8 present, dpl, db, s, l, g, avl;
139 /* for KVM_GET_SREGS and KVM_SET_SREGS */
145 /* out (KVM_GET_SREGS) / in (KVM_SET_SREGS) */
146 struct kvm_segment cs, ds, es, fs, gs, ss;
147 struct kvm_segment tr, ldt;
148 struct kvm_dtable gdt, idt;
149 __u64 cr0, cr2, cr3, cr4, cr8;
152 __u64 interrupt_bitmap[KVM_IRQ_BITMAP_SIZE(__u64)];
155 struct kvm_msr_entry {
161 /* for KVM_GET_MSRS and KVM_SET_MSRS */
164 __u32 nmsrs; /* number of msrs in entries */
166 struct kvm_msr_entry entries[0];
169 /* for KVM_GET_MSR_INDEX_LIST */
170 struct kvm_msr_list {
171 __u32 nmsrs; /* number of msrs in entries */
175 /* for KVM_TRANSLATE */
176 struct kvm_translation {
178 __u64 linear_address;
183 __u64 physical_address;
189 /* for KVM_INTERRUPT */
190 struct kvm_interrupt {
196 struct kvm_breakpoint {
202 /* for KVM_DEBUG_GUEST */
203 struct kvm_debug_guest {
207 struct kvm_breakpoint breakpoints[4];
211 /* for KVM_GET_DIRTY_LOG */
212 struct kvm_dirty_log {
216 void __user *dirty_bitmap; /* one bit per page */
223 #define KVM_GET_API_VERSION _IO(KVMIO, 1)
224 #define KVM_RUN _IOWR(KVMIO, 2, struct kvm_run)
225 #define KVM_GET_REGS _IOWR(KVMIO, 3, struct kvm_regs)
226 #define KVM_SET_REGS _IOW(KVMIO, 4, struct kvm_regs)
227 #define KVM_GET_SREGS _IOWR(KVMIO, 5, struct kvm_sregs)
228 #define KVM_SET_SREGS _IOW(KVMIO, 6, struct kvm_sregs)
229 #define KVM_TRANSLATE _IOWR(KVMIO, 7, struct kvm_translation)
230 #define KVM_INTERRUPT _IOW(KVMIO, 8, struct kvm_interrupt)
231 #define KVM_DEBUG_GUEST _IOW(KVMIO, 9, struct kvm_debug_guest)
232 #define KVM_SET_MEMORY_REGION _IOW(KVMIO, 10, struct kvm_memory_region)
233 #define KVM_CREATE_VCPU _IOW(KVMIO, 11, int /* vcpu_slot */)
234 #define KVM_GET_DIRTY_LOG _IOW(KVMIO, 12, struct kvm_dirty_log)
235 #define KVM_GET_MSRS _IOWR(KVMIO, 13, struct kvm_msrs)
236 #define KVM_SET_MSRS _IOWR(KVMIO, 14, struct kvm_msrs)
237 #define KVM_GET_MSR_INDEX_LIST _IOWR(KVMIO, 15, struct kvm_msr_list)