1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
6 * KVM x86 specific structures and definitions
10 #include <linux/types.h>
11 #include <linux/ioctl.h>
13 #define KVM_PIO_PAGE_OFFSET 1
14 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
15 #define KVM_DIRTY_LOG_PAGE_OFFSET 64
36 /* Select x86 specific features in <linux/kvm.h> */
37 #define __KVM_HAVE_PIT
38 #define __KVM_HAVE_IOAPIC
39 #define __KVM_HAVE_IRQ_LINE
40 #define __KVM_HAVE_MSI
41 #define __KVM_HAVE_USER_NMI
42 #define __KVM_HAVE_GUEST_DEBUG
43 #define __KVM_HAVE_MSIX
44 #define __KVM_HAVE_MCE
45 #define __KVM_HAVE_PIT_STATE2
46 #define __KVM_HAVE_XEN_HVM
47 #define __KVM_HAVE_VCPU_EVENTS
48 #define __KVM_HAVE_DEBUGREGS
49 #define __KVM_HAVE_XSAVE
50 #define __KVM_HAVE_XCRS
51 #define __KVM_HAVE_READONLY_MEM
53 /* Architectural interrupt line count. */
54 #define KVM_NR_INTERRUPTS 256
56 struct kvm_memory_alias {
57 __u32 slot; /* this has a different namespace than memory slots */
59 __u64 guest_phys_addr;
61 __u64 target_phys_addr;
64 /* for KVM_GET_IRQCHIP and KVM_SET_IRQCHIP */
65 struct kvm_pic_state {
66 __u8 last_irr; /* edge detection */
67 __u8 irr; /* interrupt request register */
68 __u8 imr; /* interrupt mask register */
69 __u8 isr; /* interrupt service register */
70 __u8 priority_add; /* highest irq priority */
77 __u8 rotate_on_auto_eoi;
78 __u8 special_fully_nested_mode;
79 __u8 init4; /* true if 4 byte init */
80 __u8 elcr; /* PIIX edge/trigger selection */
84 #define KVM_IOAPIC_NUM_PINS 24
85 struct kvm_ioapic_state {
97 __u8 delivery_status:1;
106 } redirtbl[KVM_IOAPIC_NUM_PINS];
109 #define KVM_IRQCHIP_PIC_MASTER 0
110 #define KVM_IRQCHIP_PIC_SLAVE 1
111 #define KVM_IRQCHIP_IOAPIC 2
112 #define KVM_NR_IRQCHIPS 3
114 #define KVM_RUN_X86_SMM (1 << 0)
115 #define KVM_RUN_X86_BUS_LOCK (1 << 1)
117 /* for KVM_GET_REGS and KVM_SET_REGS */
119 /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
120 __u64 rax, rbx, rcx, rdx;
121 __u64 rsi, rdi, rsp, rbp;
122 __u64 r8, r9, r10, r11;
123 __u64 r12, r13, r14, r15;
127 /* for KVM_GET_LAPIC and KVM_SET_LAPIC */
128 #define KVM_APIC_REG_SIZE 0x400
129 struct kvm_lapic_state {
130 char regs[KVM_APIC_REG_SIZE];
138 __u8 present, dpl, db, s, l, g, avl;
150 /* for KVM_GET_SREGS and KVM_SET_SREGS */
152 /* out (KVM_GET_SREGS) / in (KVM_SET_SREGS) */
153 struct kvm_segment cs, ds, es, fs, gs, ss;
154 struct kvm_segment tr, ldt;
155 struct kvm_dtable gdt, idt;
156 __u64 cr0, cr2, cr3, cr4, cr8;
159 __u64 interrupt_bitmap[(KVM_NR_INTERRUPTS + 63) / 64];
162 /* for KVM_GET_FPU and KVM_SET_FPU */
167 __u8 ftwx; /* in fxsave format */
177 struct kvm_msr_entry {
183 /* for KVM_GET_MSRS and KVM_SET_MSRS */
185 __u32 nmsrs; /* number of msrs in entries */
188 struct kvm_msr_entry entries[0];
191 /* for KVM_GET_MSR_INDEX_LIST */
192 struct kvm_msr_list {
193 __u32 nmsrs; /* number of msrs in entries */
197 /* Maximum size of any access bitmap in bytes */
198 #define KVM_MSR_FILTER_MAX_BITMAP_SIZE 0x600
200 /* for KVM_X86_SET_MSR_FILTER */
201 struct kvm_msr_filter_range {
202 #define KVM_MSR_FILTER_READ (1 << 0)
203 #define KVM_MSR_FILTER_WRITE (1 << 1)
205 __u32 nmsrs; /* number of msrs in bitmap */
206 __u32 base; /* MSR index the bitmap starts at */
207 __u8 *bitmap; /* a 1 bit allows the operations in flags, 0 denies */
210 #define KVM_MSR_FILTER_MAX_RANGES 16
211 struct kvm_msr_filter {
212 #define KVM_MSR_FILTER_DEFAULT_ALLOW (0 << 0)
213 #define KVM_MSR_FILTER_DEFAULT_DENY (1 << 0)
215 struct kvm_msr_filter_range ranges[KVM_MSR_FILTER_MAX_RANGES];
218 struct kvm_cpuid_entry {
227 /* for KVM_SET_CPUID */
231 struct kvm_cpuid_entry entries[0];
234 struct kvm_cpuid_entry2 {
245 #define KVM_CPUID_FLAG_SIGNIFCANT_INDEX (1 << 0)
246 #define KVM_CPUID_FLAG_STATEFUL_FUNC (1 << 1)
247 #define KVM_CPUID_FLAG_STATE_READ_NEXT (1 << 2)
249 /* for KVM_SET_CPUID2 */
253 struct kvm_cpuid_entry2 entries[0];
256 /* for KVM_GET_PIT and KVM_SET_PIT */
257 struct kvm_pit_channel_state {
258 __u32 count; /* can be 65536 */
270 __s64 count_load_time;
273 struct kvm_debug_exit_arch {
281 #define KVM_GUESTDBG_USE_SW_BP 0x00010000
282 #define KVM_GUESTDBG_USE_HW_BP 0x00020000
283 #define KVM_GUESTDBG_INJECT_DB 0x00040000
284 #define KVM_GUESTDBG_INJECT_BP 0x00080000
286 /* for KVM_SET_GUEST_DEBUG */
287 struct kvm_guest_debug_arch {
291 struct kvm_pit_state {
292 struct kvm_pit_channel_state channels[3];
295 #define KVM_PIT_FLAGS_HPET_LEGACY 0x00000001
297 struct kvm_pit_state2 {
298 struct kvm_pit_channel_state channels[3];
303 struct kvm_reinject_control {
308 /* When set in flags, include corresponding fields on KVM_SET_VCPU_EVENTS */
309 #define KVM_VCPUEVENT_VALID_NMI_PENDING 0x00000001
310 #define KVM_VCPUEVENT_VALID_SIPI_VECTOR 0x00000002
311 #define KVM_VCPUEVENT_VALID_SHADOW 0x00000004
312 #define KVM_VCPUEVENT_VALID_SMM 0x00000008
313 #define KVM_VCPUEVENT_VALID_PAYLOAD 0x00000010
315 /* Interrupt shadow states */
316 #define KVM_X86_SHADOW_INT_MOV_SS 0x01
317 #define KVM_X86_SHADOW_INT_STI 0x02
319 /* for KVM_GET/SET_VCPU_EVENTS */
320 struct kvm_vcpu_events {
349 __u8 exception_has_payload;
350 __u64 exception_payload;
353 /* for KVM_GET/SET_DEBUGREGS */
354 struct kvm_debugregs {
362 /* for KVM_CAP_XSAVE */
367 #define KVM_MAX_XCRS 16
378 struct kvm_xcr xcrs[KVM_MAX_XCRS];
382 #define KVM_SYNC_X86_REGS (1UL << 0)
383 #define KVM_SYNC_X86_SREGS (1UL << 1)
384 #define KVM_SYNC_X86_EVENTS (1UL << 2)
386 #define KVM_SYNC_X86_VALID_FIELDS \
387 (KVM_SYNC_X86_REGS| \
388 KVM_SYNC_X86_SREGS| \
391 /* kvm_sync_regs struct included by kvm_run struct */
392 struct kvm_sync_regs {
393 /* Members of this structure are potentially malicious.
394 * Care must be taken by code reading, esp. interpreting,
395 * data fields from them inside KVM to prevent TOCTOU and
396 * double-fetch types of vulnerabilities.
398 struct kvm_regs regs;
399 struct kvm_sregs sregs;
400 struct kvm_vcpu_events events;
403 #define KVM_X86_QUIRK_LINT0_REENABLED (1 << 0)
404 #define KVM_X86_QUIRK_CD_NW_CLEARED (1 << 1)
405 #define KVM_X86_QUIRK_LAPIC_MMIO_HOLE (1 << 2)
406 #define KVM_X86_QUIRK_OUT_7E_INC_RIP (1 << 3)
407 #define KVM_X86_QUIRK_MISC_ENABLE_NO_MWAIT (1 << 4)
409 #define KVM_STATE_NESTED_FORMAT_VMX 0
410 #define KVM_STATE_NESTED_FORMAT_SVM 1
412 #define KVM_STATE_NESTED_GUEST_MODE 0x00000001
413 #define KVM_STATE_NESTED_RUN_PENDING 0x00000002
414 #define KVM_STATE_NESTED_EVMCS 0x00000004
415 #define KVM_STATE_NESTED_MTF_PENDING 0x00000008
416 #define KVM_STATE_NESTED_GIF_SET 0x00000100
418 #define KVM_STATE_NESTED_SMM_GUEST_MODE 0x00000001
419 #define KVM_STATE_NESTED_SMM_VMXON 0x00000002
421 #define KVM_STATE_NESTED_VMX_VMCS_SIZE 0x1000
423 #define KVM_STATE_NESTED_SVM_VMCB_SIZE 0x1000
425 #define KVM_STATE_VMX_PREEMPTION_TIMER_DEADLINE 0x00000001
427 struct kvm_vmx_nested_state_data {
428 __u8 vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE];
429 __u8 shadow_vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE];
432 struct kvm_vmx_nested_state_hdr {
441 __u64 preemption_timer_deadline;
444 struct kvm_svm_nested_state_data {
445 /* Save area only used if KVM_STATE_NESTED_RUN_PENDING. */
446 __u8 vmcb12[KVM_STATE_NESTED_SVM_VMCB_SIZE];
449 struct kvm_svm_nested_state_hdr {
453 /* for KVM_CAP_NESTED_STATE */
454 struct kvm_nested_state {
460 struct kvm_vmx_nested_state_hdr vmx;
461 struct kvm_svm_nested_state_hdr svm;
463 /* Pad the header to 128 bytes. */
468 * Define data region as 0 bytes to preserve backwards-compatability
469 * to old definition of kvm_nested_state in order to avoid changing
470 * KVM_{GET,PUT}_NESTED_STATE ioctl values.
473 struct kvm_vmx_nested_state_data vmx[0];
474 struct kvm_svm_nested_state_data svm[0];
478 /* for KVM_CAP_PMU_EVENT_FILTER */
479 struct kvm_pmu_event_filter {
482 __u32 fixed_counter_bitmap;
488 #define KVM_PMU_EVENT_ALLOW 0
489 #define KVM_PMU_EVENT_DENY 1
491 #endif /* _ASM_X86_KVM_H */