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,
49 KVM_EXIT_SHUTDOWN
= 8,
56 __u32 emulated
; /* skip current instruction */
57 __u32 mmio_completed
; /* mmio request completed */
58 __u8 request_interrupt_window
;
64 __u32 instruction_length
;
65 __u8 ready_for_interrupt_injection
;
72 /* KVM_EXIT_UNKNOWN */
74 __u32 hardware_exit_reason
;
76 /* KVM_EXIT_EXCEPTION */
83 #define KVM_EXIT_IO_IN 0
84 #define KVM_EXIT_IO_OUT 1
86 __u8 size
; /* bytes */
110 /* for KVM_GET_REGS and KVM_SET_REGS */
116 /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
117 __u64 rax
, rbx
, rcx
, rdx
;
118 __u64 rsi
, rdi
, rsp
, rbp
;
119 __u64 r8
, r9
, r10
, r11
;
120 __u64 r12
, r13
, r14
, r15
;
129 __u8 present
, dpl
, db
, s
, l
, g
, avl
;
140 /* for KVM_GET_SREGS and KVM_SET_SREGS */
146 /* out (KVM_GET_SREGS) / in (KVM_SET_SREGS) */
147 struct kvm_segment cs
, ds
, es
, fs
, gs
, ss
;
148 struct kvm_segment tr
, ldt
;
149 struct kvm_dtable gdt
, idt
;
150 __u64 cr0
, cr2
, cr3
, cr4
, cr8
;
153 __u64 interrupt_bitmap
[KVM_IRQ_BITMAP_SIZE(__u64
)];
156 struct kvm_msr_entry
{
162 /* for KVM_GET_MSRS and KVM_SET_MSRS */
165 __u32 nmsrs
; /* number of msrs in entries */
167 struct kvm_msr_entry entries
[0];
170 /* for KVM_GET_MSR_INDEX_LIST */
171 struct kvm_msr_list
{
172 __u32 nmsrs
; /* number of msrs in entries */
176 /* for KVM_TRANSLATE */
177 struct kvm_translation
{
179 __u64 linear_address
;
184 __u64 physical_address
;
190 /* for KVM_INTERRUPT */
191 struct kvm_interrupt
{
197 struct kvm_breakpoint
{
203 /* for KVM_DEBUG_GUEST */
204 struct kvm_debug_guest
{
208 struct kvm_breakpoint breakpoints
[4];
212 /* for KVM_GET_DIRTY_LOG */
213 struct kvm_dirty_log
{
217 void __user
*dirty_bitmap
; /* one bit per page */
224 #define KVM_GET_API_VERSION _IO(KVMIO, 1)
225 #define KVM_RUN _IOWR(KVMIO, 2, struct kvm_run)
226 #define KVM_GET_REGS _IOWR(KVMIO, 3, struct kvm_regs)
227 #define KVM_SET_REGS _IOW(KVMIO, 4, struct kvm_regs)
228 #define KVM_GET_SREGS _IOWR(KVMIO, 5, struct kvm_sregs)
229 #define KVM_SET_SREGS _IOW(KVMIO, 6, struct kvm_sregs)
230 #define KVM_TRANSLATE _IOWR(KVMIO, 7, struct kvm_translation)
231 #define KVM_INTERRUPT _IOW(KVMIO, 8, struct kvm_interrupt)
232 #define KVM_DEBUG_GUEST _IOW(KVMIO, 9, struct kvm_debug_guest)
233 #define KVM_SET_MEMORY_REGION _IOW(KVMIO, 10, struct kvm_memory_region)
234 #define KVM_CREATE_VCPU _IOW(KVMIO, 11, int /* vcpu_slot */)
235 #define KVM_GET_DIRTY_LOG _IOW(KVMIO, 12, struct kvm_dirty_log)
236 #define KVM_GET_MSRS _IOWR(KVMIO, 13, struct kvm_msrs)
237 #define KVM_SET_MSRS _IOWR(KVMIO, 14, struct kvm_msrs)
238 #define KVM_GET_MSR_INDEX_LIST _IOWR(KVMIO, 15, struct kvm_msr_list)