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>
12 #include <linux/stddef.h>
14 #define KVM_PIO_PAGE_OFFSET 1
15 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
16 #define KVM_DIRTY_LOG_PAGE_OFFSET 64
37 /* Select x86 specific features in <linux/kvm.h> */
38 #define __KVM_HAVE_PIT
39 #define __KVM_HAVE_IOAPIC
40 #define __KVM_HAVE_IRQ_LINE
41 #define __KVM_HAVE_MSI
42 #define __KVM_HAVE_USER_NMI
43 #define __KVM_HAVE_GUEST_DEBUG
44 #define __KVM_HAVE_MSIX
45 #define __KVM_HAVE_MCE
46 #define __KVM_HAVE_PIT_STATE2
47 #define __KVM_HAVE_XEN_HVM
48 #define __KVM_HAVE_VCPU_EVENTS
49 #define __KVM_HAVE_DEBUGREGS
50 #define __KVM_HAVE_XSAVE
51 #define __KVM_HAVE_XCRS
52 #define __KVM_HAVE_READONLY_MEM
54 /* Architectural interrupt line count. */
55 #define KVM_NR_INTERRUPTS 256
57 /* for KVM_GET_IRQCHIP and KVM_SET_IRQCHIP */
58 struct kvm_pic_state {
59 __u8 last_irr; /* edge detection */
60 __u8 irr; /* interrupt request register */
61 __u8 imr; /* interrupt mask register */
62 __u8 isr; /* interrupt service register */
63 __u8 priority_add; /* highest irq priority */
70 __u8 rotate_on_auto_eoi;
71 __u8 special_fully_nested_mode;
72 __u8 init4; /* true if 4 byte init */
73 __u8 elcr; /* PIIX edge/trigger selection */
77 #define KVM_IOAPIC_NUM_PINS 24
78 struct kvm_ioapic_state {
90 __u8 delivery_status:1;
99 } redirtbl[KVM_IOAPIC_NUM_PINS];
102 #define KVM_IRQCHIP_PIC_MASTER 0
103 #define KVM_IRQCHIP_PIC_SLAVE 1
104 #define KVM_IRQCHIP_IOAPIC 2
105 #define KVM_NR_IRQCHIPS 3
107 #define KVM_RUN_X86_SMM (1 << 0)
108 #define KVM_RUN_X86_BUS_LOCK (1 << 1)
110 /* for KVM_GET_REGS and KVM_SET_REGS */
112 /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
113 __u64 rax, rbx, rcx, rdx;
114 __u64 rsi, rdi, rsp, rbp;
115 __u64 r8, r9, r10, r11;
116 __u64 r12, r13, r14, r15;
120 /* for KVM_GET_LAPIC and KVM_SET_LAPIC */
121 #define KVM_APIC_REG_SIZE 0x400
122 struct kvm_lapic_state {
123 char regs[KVM_APIC_REG_SIZE];
131 __u8 present, dpl, db, s, l, g, avl;
143 /* 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_NR_INTERRUPTS + 63) / 64];
156 /* out (KVM_GET_SREGS2) / in (KVM_SET_SREGS2) */
157 struct kvm_segment cs, ds, es, fs, gs, ss;
158 struct kvm_segment tr, ldt;
159 struct kvm_dtable gdt, idt;
160 __u64 cr0, cr2, cr3, cr4, cr8;
166 #define KVM_SREGS2_FLAGS_PDPTRS_VALID 1
168 /* for KVM_GET_FPU and KVM_SET_FPU */
173 __u8 ftwx; /* in fxsave format */
183 struct kvm_msr_entry {
189 /* for KVM_GET_MSRS and KVM_SET_MSRS */
191 __u32 nmsrs; /* number of msrs in entries */
194 struct kvm_msr_entry entries[];
197 /* for KVM_GET_MSR_INDEX_LIST */
198 struct kvm_msr_list {
199 __u32 nmsrs; /* number of msrs in entries */
203 /* Maximum size of any access bitmap in bytes */
204 #define KVM_MSR_FILTER_MAX_BITMAP_SIZE 0x600
206 /* for KVM_X86_SET_MSR_FILTER */
207 struct kvm_msr_filter_range {
208 #define KVM_MSR_FILTER_READ (1 << 0)
209 #define KVM_MSR_FILTER_WRITE (1 << 1)
210 #define KVM_MSR_FILTER_RANGE_VALID_MASK (KVM_MSR_FILTER_READ | \
211 KVM_MSR_FILTER_WRITE)
213 __u32 nmsrs; /* number of msrs in bitmap */
214 __u32 base; /* MSR index the bitmap starts at */
215 __u8 *bitmap; /* a 1 bit allows the operations in flags, 0 denies */
218 #define KVM_MSR_FILTER_MAX_RANGES 16
219 struct kvm_msr_filter {
221 #define KVM_MSR_FILTER_DEFAULT_ALLOW (0 << 0)
223 #define KVM_MSR_FILTER_DEFAULT_DENY (1 << 0)
224 #define KVM_MSR_FILTER_VALID_MASK (KVM_MSR_FILTER_DEFAULT_DENY)
226 struct kvm_msr_filter_range ranges[KVM_MSR_FILTER_MAX_RANGES];
229 struct kvm_cpuid_entry {
238 /* for KVM_SET_CPUID */
242 struct kvm_cpuid_entry entries[];
245 struct kvm_cpuid_entry2 {
256 #define KVM_CPUID_FLAG_SIGNIFCANT_INDEX (1 << 0)
257 #define KVM_CPUID_FLAG_STATEFUL_FUNC (1 << 1)
258 #define KVM_CPUID_FLAG_STATE_READ_NEXT (1 << 2)
260 /* for KVM_SET_CPUID2 */
264 struct kvm_cpuid_entry2 entries[];
267 /* for KVM_GET_PIT and KVM_SET_PIT */
268 struct kvm_pit_channel_state {
269 __u32 count; /* can be 65536 */
281 __s64 count_load_time;
284 struct kvm_debug_exit_arch {
292 #define KVM_GUESTDBG_USE_SW_BP 0x00010000
293 #define KVM_GUESTDBG_USE_HW_BP 0x00020000
294 #define KVM_GUESTDBG_INJECT_DB 0x00040000
295 #define KVM_GUESTDBG_INJECT_BP 0x00080000
296 #define KVM_GUESTDBG_BLOCKIRQ 0x00100000
298 /* for KVM_SET_GUEST_DEBUG */
299 struct kvm_guest_debug_arch {
303 struct kvm_pit_state {
304 struct kvm_pit_channel_state channels[3];
307 #define KVM_PIT_FLAGS_HPET_LEGACY 0x00000001
308 #define KVM_PIT_FLAGS_SPEAKER_DATA_ON 0x00000002
310 struct kvm_pit_state2 {
311 struct kvm_pit_channel_state channels[3];
316 struct kvm_reinject_control {
321 /* When set in flags, include corresponding fields on KVM_SET_VCPU_EVENTS */
322 #define KVM_VCPUEVENT_VALID_NMI_PENDING 0x00000001
323 #define KVM_VCPUEVENT_VALID_SIPI_VECTOR 0x00000002
324 #define KVM_VCPUEVENT_VALID_SHADOW 0x00000004
325 #define KVM_VCPUEVENT_VALID_SMM 0x00000008
326 #define KVM_VCPUEVENT_VALID_PAYLOAD 0x00000010
327 #define KVM_VCPUEVENT_VALID_TRIPLE_FAULT 0x00000020
329 /* Interrupt shadow states */
330 #define KVM_X86_SHADOW_INT_MOV_SS 0x01
331 #define KVM_X86_SHADOW_INT_STI 0x02
333 /* for KVM_GET/SET_VCPU_EVENTS */
334 struct kvm_vcpu_events {
366 __u8 exception_has_payload;
367 __u64 exception_payload;
370 /* for KVM_GET/SET_DEBUGREGS */
371 struct kvm_debugregs {
379 /* for KVM_CAP_XSAVE and KVM_CAP_XSAVE2 */
382 * KVM_GET_XSAVE2 and KVM_SET_XSAVE write and read as many bytes
383 * as are returned by KVM_CHECK_EXTENSION(KVM_CAP_XSAVE2)
384 * respectively, when invoked on the vm file descriptor.
386 * The size value returned by KVM_CHECK_EXTENSION(KVM_CAP_XSAVE2)
387 * will always be at least 4096. Currently, it is only greater
388 * than 4096 if a dynamic feature has been enabled with
389 * ``arch_prctl()``, but this may change in the future.
391 * The offsets of the state save areas in struct kvm_xsave follow
392 * the contents of CPUID leaf 0xD on the host.
398 #define KVM_MAX_XCRS 16
409 struct kvm_xcr xcrs[KVM_MAX_XCRS];
413 #define KVM_SYNC_X86_REGS (1UL << 0)
414 #define KVM_SYNC_X86_SREGS (1UL << 1)
415 #define KVM_SYNC_X86_EVENTS (1UL << 2)
417 #define KVM_SYNC_X86_VALID_FIELDS \
418 (KVM_SYNC_X86_REGS| \
419 KVM_SYNC_X86_SREGS| \
422 /* kvm_sync_regs struct included by kvm_run struct */
423 struct kvm_sync_regs {
424 /* Members of this structure are potentially malicious.
425 * Care must be taken by code reading, esp. interpreting,
426 * data fields from them inside KVM to prevent TOCTOU and
427 * double-fetch types of vulnerabilities.
429 struct kvm_regs regs;
430 struct kvm_sregs sregs;
431 struct kvm_vcpu_events events;
434 #define KVM_X86_QUIRK_LINT0_REENABLED (1 << 0)
435 #define KVM_X86_QUIRK_CD_NW_CLEARED (1 << 1)
436 #define KVM_X86_QUIRK_LAPIC_MMIO_HOLE (1 << 2)
437 #define KVM_X86_QUIRK_OUT_7E_INC_RIP (1 << 3)
438 #define KVM_X86_QUIRK_MISC_ENABLE_NO_MWAIT (1 << 4)
439 #define KVM_X86_QUIRK_FIX_HYPERCALL_INSN (1 << 5)
440 #define KVM_X86_QUIRK_MWAIT_NEVER_UD_FAULTS (1 << 6)
442 #define KVM_STATE_NESTED_FORMAT_VMX 0
443 #define KVM_STATE_NESTED_FORMAT_SVM 1
445 #define KVM_STATE_NESTED_GUEST_MODE 0x00000001
446 #define KVM_STATE_NESTED_RUN_PENDING 0x00000002
447 #define KVM_STATE_NESTED_EVMCS 0x00000004
448 #define KVM_STATE_NESTED_MTF_PENDING 0x00000008
449 #define KVM_STATE_NESTED_GIF_SET 0x00000100
451 #define KVM_STATE_NESTED_SMM_GUEST_MODE 0x00000001
452 #define KVM_STATE_NESTED_SMM_VMXON 0x00000002
454 #define KVM_STATE_NESTED_VMX_VMCS_SIZE 0x1000
456 #define KVM_STATE_NESTED_SVM_VMCB_SIZE 0x1000
458 #define KVM_STATE_VMX_PREEMPTION_TIMER_DEADLINE 0x00000001
460 /* attributes for system fd (group 0) */
461 #define KVM_X86_XCOMP_GUEST_SUPP 0
463 struct kvm_vmx_nested_state_data {
464 __u8 vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE];
465 __u8 shadow_vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE];
468 struct kvm_vmx_nested_state_hdr {
479 __u64 preemption_timer_deadline;
482 struct kvm_svm_nested_state_data {
483 /* Save area only used if KVM_STATE_NESTED_RUN_PENDING. */
484 __u8 vmcb12[KVM_STATE_NESTED_SVM_VMCB_SIZE];
487 struct kvm_svm_nested_state_hdr {
491 /* for KVM_CAP_NESTED_STATE */
492 struct kvm_nested_state {
498 struct kvm_vmx_nested_state_hdr vmx;
499 struct kvm_svm_nested_state_hdr svm;
501 /* Pad the header to 128 bytes. */
506 * Define data region as 0 bytes to preserve backwards-compatability
507 * to old definition of kvm_nested_state in order to avoid changing
508 * KVM_{GET,PUT}_NESTED_STATE ioctl values.
511 __DECLARE_FLEX_ARRAY(struct kvm_vmx_nested_state_data, vmx);
512 __DECLARE_FLEX_ARRAY(struct kvm_svm_nested_state_data, svm);
516 /* for KVM_CAP_PMU_EVENT_FILTER */
517 struct kvm_pmu_event_filter {
520 __u32 fixed_counter_bitmap;
526 #define KVM_PMU_EVENT_ALLOW 0
527 #define KVM_PMU_EVENT_DENY 1
529 #define KVM_PMU_EVENT_FLAG_MASKED_EVENTS BIT(0)
530 #define KVM_PMU_EVENT_FLAGS_VALID_MASK (KVM_PMU_EVENT_FLAG_MASKED_EVENTS)
533 * Masked event layout.
536 * 7:0 event select (low bits)
539 * 35:32 event select (high bits)
545 #define KVM_PMU_ENCODE_MASKED_ENTRY(event_select, mask, match, exclude) \
546 (((event_select) & 0xFFULL) | (((event_select) & 0XF00ULL) << 24) | \
547 (((mask) & 0xFFULL) << 56) | \
548 (((match) & 0xFFULL) << 8) | \
549 ((__u64)(!!(exclude)) << 55))
551 #define KVM_PMU_MASKED_ENTRY_EVENT_SELECT \
552 (GENMASK_ULL(7, 0) | GENMASK_ULL(35, 32))
553 #define KVM_PMU_MASKED_ENTRY_UMASK_MASK (GENMASK_ULL(63, 56))
554 #define KVM_PMU_MASKED_ENTRY_UMASK_MATCH (GENMASK_ULL(15, 8))
555 #define KVM_PMU_MASKED_ENTRY_EXCLUDE (BIT_ULL(55))
556 #define KVM_PMU_MASKED_ENTRY_UMASK_MASK_SHIFT (56)
558 /* for KVM_{GET,SET,HAS}_DEVICE_ATTR */
559 #define KVM_VCPU_TSC_CTRL 0 /* control group for the timestamp counter (TSC) */
560 #define KVM_VCPU_TSC_OFFSET 0 /* attribute for the TSC offset */
562 /* x86-specific KVM_EXIT_HYPERCALL flags. */
563 #define KVM_EXIT_HYPERCALL_LONG_MODE BIT(0)
565 #define KVM_X86_DEFAULT_VM 0
566 #define KVM_X86_SW_PROTECTED_VM 1
568 #endif /* _ASM_X86_KVM_H */