5 * Userspace interface for /dev/kvm - kernel based virtual machine
7 * Note: you must update KVM_API_VERSION if you change this interface.
10 #include <asm/types.h>
11 #include <linux/ioctl.h>
14 #define KVM_API_VERSION 12
16 /* Architectural interrupt line count. */
17 #define KVM_NR_INTERRUPTS 256
19 /* for KVM_CREATE_MEMORY_REGION */
20 struct kvm_memory_region {
23 __u64 guest_phys_addr;
24 __u64 memory_size; /* bytes */
27 /* for KVM_SET_USER_MEMORY_REGION */
28 struct kvm_userspace_memory_region {
31 __u64 guest_phys_addr;
32 __u64 memory_size; /* bytes */
33 __u64 userspace_addr; /* start of the userspace allocated memory */
36 /* for kvm_memory_region::flags */
37 #define KVM_MEM_LOG_DIRTY_PAGES 1UL
40 /* for KVM_IRQ_LINE */
41 struct kvm_irq_level {
43 * ACPI gsi notion of irq.
44 * For IA-64 (APIC model) IOAPIC0: irq 0-23; IOAPIC1: irq 24-47..
45 * For X86 (standard AT mode) PIC0/1: irq 0-15. IOAPIC0: 0-23..
51 /* for KVM_GET_IRQCHIP and KVM_SET_IRQCHIP */
52 struct kvm_pic_state {
53 __u8 last_irr; /* edge detection */
54 __u8 irr; /* interrupt request register */
55 __u8 imr; /* interrupt mask register */
56 __u8 isr; /* interrupt service register */
57 __u8 priority_add; /* highest irq priority */
64 __u8 rotate_on_auto_eoi;
65 __u8 special_fully_nested_mode;
66 __u8 init4; /* true if 4 byte init */
67 __u8 elcr; /* PIIX edge/trigger selection */
71 #define KVM_IOAPIC_NUM_PINS 24
72 struct kvm_ioapic_state {
84 __u8 delivery_status:1;
93 } redirtbl[KVM_IOAPIC_NUM_PINS];
96 #define KVM_IRQCHIP_PIC_MASTER 0
97 #define KVM_IRQCHIP_PIC_SLAVE 1
98 #define KVM_IRQCHIP_IOAPIC 2
104 char dummy[512]; /* reserving space */
105 struct kvm_pic_state pic;
106 struct kvm_ioapic_state ioapic;
110 #define KVM_EXIT_UNKNOWN 0
111 #define KVM_EXIT_EXCEPTION 1
112 #define KVM_EXIT_IO 2
113 #define KVM_EXIT_HYPERCALL 3
114 #define KVM_EXIT_DEBUG 4
115 #define KVM_EXIT_HLT 5
116 #define KVM_EXIT_MMIO 6
117 #define KVM_EXIT_IRQ_WINDOW_OPEN 7
118 #define KVM_EXIT_SHUTDOWN 8
119 #define KVM_EXIT_FAIL_ENTRY 9
120 #define KVM_EXIT_INTR 10
121 #define KVM_EXIT_SET_TPR 11
123 /* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */
126 __u8 request_interrupt_window;
131 __u8 ready_for_interrupt_injection;
135 /* in (pre_kvm_run), out (post_kvm_run) */
140 /* KVM_EXIT_UNKNOWN */
142 __u64 hardware_exit_reason;
144 /* KVM_EXIT_FAIL_ENTRY */
146 __u64 hardware_entry_failure_reason;
148 /* KVM_EXIT_EXCEPTION */
155 #define KVM_EXIT_IO_IN 0
156 #define KVM_EXIT_IO_OUT 1
158 __u8 size; /* bytes */
161 __u64 data_offset; /* relative to kvm_run start */
172 /* KVM_EXIT_HYPERCALL */
180 /* Fix the size of the union. */
185 /* for KVM_GET_REGS and KVM_SET_REGS */
187 /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
188 __u64 rax, rbx, rcx, rdx;
189 __u64 rsi, rdi, rsp, rbp;
190 __u64 r8, r9, r10, r11;
191 __u64 r12, r13, r14, r15;
195 /* for KVM_GET_FPU and KVM_SET_FPU */
200 __u8 ftwx; /* in fxsave format */
210 /* for KVM_GET_LAPIC and KVM_SET_LAPIC */
211 #define KVM_APIC_REG_SIZE 0x400
212 struct kvm_lapic_state {
213 char regs[KVM_APIC_REG_SIZE];
221 __u8 present, dpl, db, s, l, g, avl;
232 /* for KVM_GET_SREGS and KVM_SET_SREGS */
234 /* out (KVM_GET_SREGS) / in (KVM_SET_SREGS) */
235 struct kvm_segment cs, ds, es, fs, gs, ss;
236 struct kvm_segment tr, ldt;
237 struct kvm_dtable gdt, idt;
238 __u64 cr0, cr2, cr3, cr4, cr8;
241 __u64 interrupt_bitmap[(KVM_NR_INTERRUPTS + 63) / 64];
244 struct kvm_msr_entry {
250 /* for KVM_GET_MSRS and KVM_SET_MSRS */
252 __u32 nmsrs; /* number of msrs in entries */
255 struct kvm_msr_entry entries[0];
258 /* for KVM_GET_MSR_INDEX_LIST */
259 struct kvm_msr_list {
260 __u32 nmsrs; /* number of msrs in entries */
264 /* for KVM_TRANSLATE */
265 struct kvm_translation {
267 __u64 linear_address;
270 __u64 physical_address;
277 /* for KVM_INTERRUPT */
278 struct kvm_interrupt {
283 struct kvm_breakpoint {
289 /* for KVM_DEBUG_GUEST */
290 struct kvm_debug_guest {
294 struct kvm_breakpoint breakpoints[4];
298 /* for KVM_GET_DIRTY_LOG */
299 struct kvm_dirty_log {
303 void __user *dirty_bitmap; /* one bit per page */
308 struct kvm_cpuid_entry {
317 /* for KVM_SET_CPUID */
321 struct kvm_cpuid_entry entries[0];
324 /* for KVM_SET_SIGNAL_MASK */
325 struct kvm_signal_mask {
333 * ioctls for /dev/kvm fds:
335 #define KVM_GET_API_VERSION _IO(KVMIO, 0x00)
336 #define KVM_CREATE_VM _IO(KVMIO, 0x01) /* returns a VM fd */
337 #define KVM_GET_MSR_INDEX_LIST _IOWR(KVMIO, 0x02, struct kvm_msr_list)
339 * Check if a kvm extension is available. Argument is extension number,
340 * return is 1 (yes) or 0 (no, sorry).
342 #define KVM_CHECK_EXTENSION _IO(KVMIO, 0x03)
344 * Get size for mmap(vcpu_fd)
346 #define KVM_GET_VCPU_MMAP_SIZE _IO(KVMIO, 0x04) /* in bytes */
349 * Extension capability list.
351 #define KVM_CAP_IRQCHIP 0
352 #define KVM_CAP_HLT 1
353 #define KVM_CAP_MMU_SHADOW_CACHE_CONTROL 2
354 #define KVM_CAP_USER_MEMORY 3
355 #define KVM_CAP_SET_TSS_ADDR 4
360 #define KVM_SET_MEMORY_REGION _IOW(KVMIO, 0x40, struct kvm_memory_region)
361 #define KVM_SET_NR_MMU_PAGES _IO(KVMIO, 0x44)
362 #define KVM_GET_NR_MMU_PAGES _IO(KVMIO, 0x45)
363 #define KVM_SET_USER_MEMORY_REGION _IOW(KVMIO, 0x46,\
364 struct kvm_userspace_memory_region)
365 #define KVM_SET_TSS_ADDR _IO(KVMIO, 0x47)
367 * KVM_CREATE_VCPU receives as a parameter the vcpu slot, and returns
370 #define KVM_CREATE_VCPU _IO(KVMIO, 0x41)
371 #define KVM_GET_DIRTY_LOG _IOW(KVMIO, 0x42, struct kvm_dirty_log)
372 #define KVM_SET_MEMORY_ALIAS _IOW(KVMIO, 0x43, struct kvm_memory_alias)
373 /* Device model IOC */
374 #define KVM_CREATE_IRQCHIP _IO(KVMIO, 0x60)
375 #define KVM_IRQ_LINE _IOW(KVMIO, 0x61, struct kvm_irq_level)
376 #define KVM_GET_IRQCHIP _IOWR(KVMIO, 0x62, struct kvm_irqchip)
377 #define KVM_SET_IRQCHIP _IOR(KVMIO, 0x63, struct kvm_irqchip)
380 * ioctls for vcpu fds
382 #define KVM_RUN _IO(KVMIO, 0x80)
383 #define KVM_GET_REGS _IOR(KVMIO, 0x81, struct kvm_regs)
384 #define KVM_SET_REGS _IOW(KVMIO, 0x82, struct kvm_regs)
385 #define KVM_GET_SREGS _IOR(KVMIO, 0x83, struct kvm_sregs)
386 #define KVM_SET_SREGS _IOW(KVMIO, 0x84, struct kvm_sregs)
387 #define KVM_TRANSLATE _IOWR(KVMIO, 0x85, struct kvm_translation)
388 #define KVM_INTERRUPT _IOW(KVMIO, 0x86, struct kvm_interrupt)
389 #define KVM_DEBUG_GUEST _IOW(KVMIO, 0x87, struct kvm_debug_guest)
390 #define KVM_GET_MSRS _IOWR(KVMIO, 0x88, struct kvm_msrs)
391 #define KVM_SET_MSRS _IOW(KVMIO, 0x89, struct kvm_msrs)
392 #define KVM_SET_CPUID _IOW(KVMIO, 0x8a, struct kvm_cpuid)
393 #define KVM_SET_SIGNAL_MASK _IOW(KVMIO, 0x8b, struct kvm_signal_mask)
394 #define KVM_GET_FPU _IOR(KVMIO, 0x8c, struct kvm_fpu)
395 #define KVM_SET_FPU _IOW(KVMIO, 0x8d, struct kvm_fpu)
396 #define KVM_GET_LAPIC _IOR(KVMIO, 0x8e, struct kvm_lapic_state)
397 #define KVM_SET_LAPIC _IOW(KVMIO, 0x8f, struct kvm_lapic_state)