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
35 /* Select x86 specific features in <linux/kvm.h> */
36 #define __KVM_HAVE_PIT
37 #define __KVM_HAVE_IOAPIC
38 #define __KVM_HAVE_IRQ_LINE
39 #define __KVM_HAVE_MSI
40 #define __KVM_HAVE_USER_NMI
41 #define __KVM_HAVE_GUEST_DEBUG
42 #define __KVM_HAVE_MSIX
43 #define __KVM_HAVE_MCE
44 #define __KVM_HAVE_PIT_STATE2
45 #define __KVM_HAVE_XEN_HVM
46 #define __KVM_HAVE_VCPU_EVENTS
47 #define __KVM_HAVE_DEBUGREGS
48 #define __KVM_HAVE_XSAVE
49 #define __KVM_HAVE_XCRS
50 #define __KVM_HAVE_READONLY_MEM
52 /* Architectural interrupt line count. */
53 #define KVM_NR_INTERRUPTS 256
55 struct kvm_memory_alias {
56 __u32 slot; /* this has a different namespace than memory slots */
58 __u64 guest_phys_addr;
60 __u64 target_phys_addr;
63 /* for KVM_GET_IRQCHIP and KVM_SET_IRQCHIP */
64 struct kvm_pic_state {
65 __u8 last_irr; /* edge detection */
66 __u8 irr; /* interrupt request register */
67 __u8 imr; /* interrupt mask register */
68 __u8 isr; /* interrupt service register */
69 __u8 priority_add; /* highest irq priority */
76 __u8 rotate_on_auto_eoi;
77 __u8 special_fully_nested_mode;
78 __u8 init4; /* true if 4 byte init */
79 __u8 elcr; /* PIIX edge/trigger selection */
83 #define KVM_IOAPIC_NUM_PINS 24
84 struct kvm_ioapic_state {
96 __u8 delivery_status:1;
105 } redirtbl[KVM_IOAPIC_NUM_PINS];
108 #define KVM_IRQCHIP_PIC_MASTER 0
109 #define KVM_IRQCHIP_PIC_SLAVE 1
110 #define KVM_IRQCHIP_IOAPIC 2
111 #define KVM_NR_IRQCHIPS 3
113 #define KVM_RUN_X86_SMM (1 << 0)
115 /* for KVM_GET_REGS and KVM_SET_REGS */
117 /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
118 __u64 rax, rbx, rcx, rdx;
119 __u64 rsi, rdi, rsp, rbp;
120 __u64 r8, r9, r10, r11;
121 __u64 r12, r13, r14, r15;
125 /* for KVM_GET_LAPIC and KVM_SET_LAPIC */
126 #define KVM_APIC_REG_SIZE 0x400
127 struct kvm_lapic_state {
128 char regs[KVM_APIC_REG_SIZE];
136 __u8 present, dpl, db, s, l, g, avl;
148 /* for KVM_GET_SREGS and KVM_SET_SREGS */
150 /* out (KVM_GET_SREGS) / in (KVM_SET_SREGS) */
151 struct kvm_segment cs, ds, es, fs, gs, ss;
152 struct kvm_segment tr, ldt;
153 struct kvm_dtable gdt, idt;
154 __u64 cr0, cr2, cr3, cr4, cr8;
157 __u64 interrupt_bitmap[(KVM_NR_INTERRUPTS + 63) / 64];
160 /* for KVM_GET_FPU and KVM_SET_FPU */
165 __u8 ftwx; /* in fxsave format */
175 struct kvm_msr_entry {
181 /* for KVM_GET_MSRS and KVM_SET_MSRS */
183 __u32 nmsrs; /* number of msrs in entries */
186 struct kvm_msr_entry entries[0];
189 /* for KVM_GET_MSR_INDEX_LIST */
190 struct kvm_msr_list {
191 __u32 nmsrs; /* number of msrs in entries */
196 struct kvm_cpuid_entry {
205 /* for KVM_SET_CPUID */
209 struct kvm_cpuid_entry entries[0];
212 struct kvm_cpuid_entry2 {
223 #define KVM_CPUID_FLAG_SIGNIFCANT_INDEX (1 << 0)
224 #define KVM_CPUID_FLAG_STATEFUL_FUNC (1 << 1)
225 #define KVM_CPUID_FLAG_STATE_READ_NEXT (1 << 2)
227 /* for KVM_SET_CPUID2 */
231 struct kvm_cpuid_entry2 entries[0];
234 /* for KVM_GET_PIT and KVM_SET_PIT */
235 struct kvm_pit_channel_state {
236 __u32 count; /* can be 65536 */
248 __s64 count_load_time;
251 struct kvm_debug_exit_arch {
259 #define KVM_GUESTDBG_USE_SW_BP 0x00010000
260 #define KVM_GUESTDBG_USE_HW_BP 0x00020000
261 #define KVM_GUESTDBG_INJECT_DB 0x00040000
262 #define KVM_GUESTDBG_INJECT_BP 0x00080000
264 /* for KVM_SET_GUEST_DEBUG */
265 struct kvm_guest_debug_arch {
269 struct kvm_pit_state {
270 struct kvm_pit_channel_state channels[3];
273 #define KVM_PIT_FLAGS_HPET_LEGACY 0x00000001
275 struct kvm_pit_state2 {
276 struct kvm_pit_channel_state channels[3];
281 struct kvm_reinject_control {
286 /* When set in flags, include corresponding fields on KVM_SET_VCPU_EVENTS */
287 #define KVM_VCPUEVENT_VALID_NMI_PENDING 0x00000001
288 #define KVM_VCPUEVENT_VALID_SIPI_VECTOR 0x00000002
289 #define KVM_VCPUEVENT_VALID_SHADOW 0x00000004
290 #define KVM_VCPUEVENT_VALID_SMM 0x00000008
291 #define KVM_VCPUEVENT_VALID_PAYLOAD 0x00000010
293 /* Interrupt shadow states */
294 #define KVM_X86_SHADOW_INT_MOV_SS 0x01
295 #define KVM_X86_SHADOW_INT_STI 0x02
297 /* for KVM_GET/SET_VCPU_EVENTS */
298 struct kvm_vcpu_events {
327 __u8 exception_has_payload;
328 __u64 exception_payload;
331 /* for KVM_GET/SET_DEBUGREGS */
332 struct kvm_debugregs {
340 /* for KVM_CAP_XSAVE */
345 #define KVM_MAX_XCRS 16
356 struct kvm_xcr xcrs[KVM_MAX_XCRS];
360 #define KVM_SYNC_X86_REGS (1UL << 0)
361 #define KVM_SYNC_X86_SREGS (1UL << 1)
362 #define KVM_SYNC_X86_EVENTS (1UL << 2)
364 #define KVM_SYNC_X86_VALID_FIELDS \
365 (KVM_SYNC_X86_REGS| \
366 KVM_SYNC_X86_SREGS| \
369 /* kvm_sync_regs struct included by kvm_run struct */
370 struct kvm_sync_regs {
371 /* Members of this structure are potentially malicious.
372 * Care must be taken by code reading, esp. interpreting,
373 * data fields from them inside KVM to prevent TOCTOU and
374 * double-fetch types of vulnerabilities.
376 struct kvm_regs regs;
377 struct kvm_sregs sregs;
378 struct kvm_vcpu_events events;
381 #define KVM_X86_QUIRK_LINT0_REENABLED (1 << 0)
382 #define KVM_X86_QUIRK_CD_NW_CLEARED (1 << 1)
383 #define KVM_X86_QUIRK_LAPIC_MMIO_HOLE (1 << 2)
384 #define KVM_X86_QUIRK_OUT_7E_INC_RIP (1 << 3)
385 #define KVM_X86_QUIRK_MISC_ENABLE_NO_MWAIT (1 << 4)
387 #define KVM_STATE_NESTED_FORMAT_VMX 0
388 #define KVM_STATE_NESTED_FORMAT_SVM 1
390 #define KVM_STATE_NESTED_GUEST_MODE 0x00000001
391 #define KVM_STATE_NESTED_RUN_PENDING 0x00000002
392 #define KVM_STATE_NESTED_EVMCS 0x00000004
393 #define KVM_STATE_NESTED_MTF_PENDING 0x00000008
394 #define KVM_STATE_NESTED_GIF_SET 0x00000100
396 #define KVM_STATE_NESTED_SMM_GUEST_MODE 0x00000001
397 #define KVM_STATE_NESTED_SMM_VMXON 0x00000002
399 #define KVM_STATE_NESTED_VMX_VMCS_SIZE 0x1000
401 #define KVM_STATE_NESTED_SVM_VMCB_SIZE 0x1000
403 #define KVM_STATE_VMX_PREEMPTION_TIMER_DEADLINE 0x00000001
405 struct kvm_vmx_nested_state_data {
406 __u8 vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE];
407 __u8 shadow_vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE];
410 struct kvm_vmx_nested_state_hdr {
419 __u64 preemption_timer_deadline;
422 struct kvm_svm_nested_state_data {
423 /* Save area only used if KVM_STATE_NESTED_RUN_PENDING. */
424 __u8 vmcb12[KVM_STATE_NESTED_SVM_VMCB_SIZE];
427 struct kvm_svm_nested_state_hdr {
431 /* for KVM_CAP_NESTED_STATE */
432 struct kvm_nested_state {
438 struct kvm_vmx_nested_state_hdr vmx;
439 struct kvm_svm_nested_state_hdr svm;
441 /* Pad the header to 128 bytes. */
446 * Define data region as 0 bytes to preserve backwards-compatability
447 * to old definition of kvm_nested_state in order to avoid changing
448 * KVM_{GET,PUT}_NESTED_STATE ioctl values.
451 struct kvm_vmx_nested_state_data vmx[0];
452 struct kvm_svm_nested_state_data svm[0];
456 /* for KVM_CAP_PMU_EVENT_FILTER */
457 struct kvm_pmu_event_filter {
460 __u32 fixed_counter_bitmap;
466 #define KVM_PMU_EVENT_ALLOW 0
467 #define KVM_PMU_EVENT_DENY 1
469 #endif /* _ASM_X86_KVM_H */