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kvm.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _ASM_X86_KVM_H #define _ASM_X86_KVM_H /* * KVM x86 specific structures and definitions * */ #include <linux/types.h> #include <linux/ioctl.h> #define KVM_PIO_PAGE_OFFSET 1 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2 #define KVM_DIRTY_LOG_PAGE_OFFSET 64 #define DE_VECTOR 0 #define DB_VECTOR 1 #define BP_VECTOR 3 #define OF_VECTOR 4 #define BR_VECTOR 5 #define UD_VECTOR 6 #define NM_VECTOR 7 #define DF_VECTOR 8 #define TS_VECTOR 10 #define NP_VECTOR 11 #define SS_VECTOR 12 #define GP_VECTOR 13 #define PF_VECTOR 14 #define MF_VECTOR 16 #define AC_VECTOR 17 #define MC_VECTOR 18 #define XM_VECTOR 19 #define VE_VECTOR 20 /* Select x86 specific features in <linux/kvm.h> */ #define __KVM_HAVE_PIT #define __KVM_HAVE_IOAPIC #define __KVM_HAVE_IRQ_LINE #define __KVM_HAVE_MSI #define __KVM_HAVE_USER_NMI #define __KVM_HAVE_GUEST_DEBUG #define __KVM_HAVE_MSIX #define __KVM_HAVE_MCE #define __KVM_HAVE_PIT_STATE2 #define __KVM_HAVE_XEN_HVM #define __KVM_HAVE_VCPU_EVENTS #define __KVM_HAVE_DEBUGREGS #define __KVM_HAVE_XSAVE #define __KVM_HAVE_XCRS #define __KVM_HAVE_READONLY_MEM /* Architectural interrupt line count. */ #define KVM_NR_INTERRUPTS 256 struct kvm_memory_alias { __u32 slot; /* this has a different namespace than memory slots */ __u32 flags; __u64 guest_phys_addr; __u64 memory_size; __u64 target_phys_addr; }; /* for KVM_GET_IRQCHIP and KVM_SET_IRQCHIP */ struct kvm_pic_state { __u8 last_irr; /* edge detection */ __u8 irr; /* interrupt request register */ __u8 imr; /* interrupt mask register */ __u8 isr; /* interrupt service register */ __u8 priority_add; /* highest irq priority */ __u8 irq_base; __u8 read_reg_select; __u8 poll; __u8 special_mask; __u8 init_state; __u8 auto_eoi; __u8 rotate_on_auto_eoi; __u8 special_fully_nested_mode; __u8 init4; /* true if 4 byte init */ __u8 elcr; /* PIIX edge/trigger selection */ __u8 elcr_mask; }; #define KVM_IOAPIC_NUM_PINS 24 struct kvm_ioapic_state { __u64 base_address; __u32 ioregsel; __u32 id; __u32 irr; __u32 pad; union { __u64 bits; struct { __u8 vector; __u8 delivery_mode:3; __u8 dest_mode:1; __u8 delivery_status:1; __u8 polarity:1; __u8 remote_irr:1; __u8 trig_mode:1; __u8 mask:1; __u8 reserve:7; __u8 reserved[4]; __u8 dest_id; } fields; } redirtbl[KVM_IOAPIC_NUM_PINS]; }; #define KVM_IRQCHIP_PIC_MASTER 0 #define KVM_IRQCHIP_PIC_SLAVE 1 #define KVM_IRQCHIP_IOAPIC 2 #define KVM_NR_IRQCHIPS 3 #define KVM_RUN_X86_SMM (1 << 0) #define KVM_RUN_X86_BUS_LOCK (1 << 1) /* for KVM_GET_REGS and KVM_SET_REGS */ struct kvm_regs { /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */ __u64 rax, rbx, rcx, rdx; __u64 rsi, rdi, rsp, rbp; __u64 r8, r9, r10, r11; __u64 r12, r13, r14, r15; __u64 rip, rflags; }; /* for KVM_GET_LAPIC and KVM_SET_LAPIC */ #define KVM_APIC_REG_SIZE 0x400 struct kvm_lapic_state { char regs[KVM_APIC_REG_SIZE]; }; struct kvm_segment { __u64 base; __u32 limit; __u16 selector; __u8 type; __u8 present, dpl, db, s, l, g, avl; __u8 unusable; __u8 padding; }; struct kvm_dtable { __u64 base; __u16 limit; __u16 padding[3]; }; /* for KVM_GET_SREGS and KVM_SET_SREGS */ struct kvm_sregs { /* out (KVM_GET_SREGS) / in (KVM_SET_SREGS) */ struct kvm_segment cs, ds, es, fs, gs, ss; struct kvm_segment tr, ldt; struct kvm_dtable gdt, idt; __u64 cr0, cr2, cr3, cr4, cr8; __u64 efer; __u64 apic_base; __u64 interrupt_bitmap[(KVM_NR_INTERRUPTS + 63) / 64]; }; struct kvm_sregs2 { /* out (KVM_GET_SREGS2) / in (KVM_SET_SREGS2) */ struct kvm_segment cs, ds, es, fs, gs, ss; struct kvm_segment tr, ldt; struct kvm_dtable gdt, idt; __u64 cr0, cr2, cr3, cr4, cr8; __u64 efer; __u64 apic_base; __u64 flags; __u64 pdptrs[4]; }; #define KVM_SREGS2_FLAGS_PDPTRS_VALID 1 /* for KVM_GET_FPU and KVM_SET_FPU */ struct kvm_fpu { __u8 fpr[8][16]; __u16 fcw; __u16 fsw; __u8 ftwx; /* in fxsave format */ __u8 pad1; __u16 last_opcode; __u64 last_ip; __u64 last_dp; __u8 xmm[16][16]; __u32 mxcsr; __u32 pad2; }; struct kvm_msr_entry { __u32 index; __u32 reserved; __u64 data; }; /* for KVM_GET_MSRS and KVM_SET_MSRS */ struct kvm_msrs { __u32 nmsrs; /* number of msrs in entries */ __u32 pad; struct kvm_msr_entry entries[0]; }; /* for KVM_GET_MSR_INDEX_LIST */ struct kvm_msr_list { __u32 nmsrs; /* number of msrs in entries */ __u32 indices[0]; }; /* Maximum size of any access bitmap in bytes */ #define KVM_MSR_FILTER_MAX_BITMAP_SIZE 0x600 /* for KVM_X86_SET_MSR_FILTER */ struct kvm_msr_filter_range { #define KVM_MSR_FILTER_READ (1 << 0) #define KVM_MSR_FILTER_WRITE (1 << 1) __u32 flags; __u32 nmsrs; /* number of msrs in bitmap */ __u32 base; /* MSR index the bitmap starts at */ __u8 *bitmap; /* a 1 bit allows the operations in flags, 0 denies */ }; #define KVM_MSR_FILTER_MAX_RANGES 16 struct kvm_msr_filter { #define KVM_MSR_FILTER_DEFAULT_ALLOW (0 << 0) #define KVM_MSR_FILTER_DEFAULT_DENY (1 << 0) __u32 flags; struct kvm_msr_filter_range ranges[KVM_MSR_FILTER_MAX_RANGES]; }; struct kvm_cpuid_entry { __u32 function; __u32 eax; __u32 ebx; __u32 ecx; __u32 edx; __u32 padding; }; /* for KVM_SET_CPUID */ struct kvm_cpuid { __u32 nent; __u32 padding; struct kvm_cpuid_entry entries[0]; }; struct kvm_cpuid_entry2 { __u32 function; __u32 index; __u32 flags; __u32 eax; __u32 ebx; __u32 ecx; __u32 edx; __u32 padding[3]; }; #define KVM_CPUID_FLAG_SIGNIFCANT_INDEX (1 << 0) #define KVM_CPUID_FLAG_STATEFUL_FUNC (1 << 1) #define KVM_CPUID_FLAG_STATE_READ_NEXT (1 << 2) /* for KVM_SET_CPUID2 */ struct kvm_cpuid2 { __u32 nent; __u32 padding; struct kvm_cpuid_entry2 entries[0]; }; /* for KVM_GET_PIT and KVM_SET_PIT */ struct kvm_pit_channel_state { __u32 count; /* can be 65536 */ __u16 latched_count; __u8 count_latched; __u8 status_latched; __u8 status; __u8 read_state; __u8 write_state; __u8 write_latch; __u8 rw_mode; __u8 mode; __u8 bcd; __u8 gate; __s64 count_load_time; }; struct kvm_debug_exit_arch { __u32 exception; __u32 pad; __u64 pc; __u64 dr6; __u64 dr7; }; #define KVM_GUESTDBG_USE_SW_BP 0x00010000 #define KVM_GUESTDBG_USE_HW_BP 0x00020000 #define KVM_GUESTDBG_INJECT_DB 0x00040000 #define KVM_GUESTDBG_INJECT_BP 0x00080000 #define KVM_GUESTDBG_BLOCKIRQ 0x00100000 /* for KVM_SET_GUEST_DEBUG */ struct kvm_guest_debug_arch { __u64 debugreg[8]; }; struct kvm_pit_state { struct kvm_pit_channel_state channels[3]; }; #define KVM_PIT_FLAGS_HPET_LEGACY 0x00000001 struct kvm_pit_state2 { struct kvm_pit_channel_state channels[3]; __u32 flags; __u32 reserved[9]; }; struct kvm_reinject_control { __u8 pit_reinject; __u8 reserved[31]; }; /* When set in flags, include corresponding fields on KVM_SET_VCPU_EVENTS */ #define KVM_VCPUEVENT_VALID_NMI_PENDING 0x00000001 #define KVM_VCPUEVENT_VALID_SIPI_VECTOR 0x00000002 #define KVM_VCPUEVENT_VALID_SHADOW 0x00000004 #define KVM_VCPUEVENT_VALID_SMM 0x00000008 #define KVM_VCPUEVENT_VALID_PAYLOAD 0x00000010 /* Interrupt shadow states */ #define KVM_X86_SHADOW_INT_MOV_SS 0x01 #define KVM_X86_SHADOW_INT_STI 0x02 /* for KVM_GET/SET_VCPU_EVENTS */ struct kvm_vcpu_events { struct { __u8 injected; __u8 nr; __u8 has_error_code; __u8 pending; __u32 error_code; } exception; struct { __u8 injected; __u8 nr; __u8 soft; __u8 shadow; } interrupt; struct { __u8 injected; __u8 pending; __u8 masked; __u8 pad; } nmi; __u32 sipi_vector; __u32 flags; struct { __u8 smm; __u8 pending; __u8 smm_inside_nmi; __u8 latched_init; } smi; __u8 reserved[27]; __u8 exception_has_payload; __u64 exception_payload; }; /* for KVM_GET/SET_DEBUGREGS */ struct kvm_debugregs { __u64 db[4]; __u64 dr6; __u64 dr7; __u64 flags; __u64 reserved[9]; }; /* for KVM_CAP_XSAVE and KVM_CAP_XSAVE2 */ struct kvm_xsave { /* * KVM_GET_XSAVE2 and KVM_SET_XSAVE write and read as many bytes * as are returned by KVM_CHECK_EXTENSION(KVM_CAP_XSAVE2) * respectively, when invoked on the vm file descriptor. * * The size value returned by KVM_CHECK_EXTENSION(KVM_CAP_XSAVE2) * will always be at least 4096. Currently, it is only greater * than 4096 if a dynamic feature has been enabled with * ``arch_prctl()``, but this may change in the future. * * The offsets of the state save areas in struct kvm_xsave follow * the contents of CPUID leaf 0xD on the host. */ __u32 region[1024]; __u32 extra[0]; }; #define KVM_MAX_XCRS 16 struct kvm_xcr { __u32 xcr; __u32 reserved; __u64 value; }; struct kvm_xcrs { __u32 nr_xcrs; __u32 flags; struct kvm_xcr xcrs[KVM_MAX_XCRS]; __u64 padding[16]; }; #define KVM_SYNC_X86_REGS (1UL << 0) #define KVM_SYNC_X86_SREGS (1UL << 1) #define KVM_SYNC_X86_EVENTS (1UL << 2) #define KVM_SYNC_X86_VALID_FIELDS \ (KVM_SYNC_X86_REGS| \ KVM_SYNC_X86_SREGS| \ KVM_SYNC_X86_EVENTS) /* kvm_sync_regs struct included by kvm_run struct */ struct kvm_sync_regs { /* Members of this structure are potentially malicious. * Care must be taken by code reading, esp. interpreting, * data fields from them inside KVM to prevent TOCTOU and * double-fetch types of vulnerabilities. */ struct kvm_regs regs; struct kvm_sregs sregs; struct kvm_vcpu_events events; }; #define KVM_X86_QUIRK_LINT0_REENABLED (1 << 0) #define KVM_X86_QUIRK_CD_NW_CLEARED (1 << 1) #define KVM_X86_QUIRK_LAPIC_MMIO_HOLE (1 << 2) #define KVM_X86_QUIRK_OUT_7E_INC_RIP (1 << 3) #define KVM_X86_QUIRK_MISC_ENABLE_NO_MWAIT (1 << 4) #define KVM_STATE_NESTED_FORMAT_VMX 0 #define KVM_STATE_NESTED_FORMAT_SVM 1 #define KVM_STATE_NESTED_GUEST_MODE 0x00000001 #define KVM_STATE_NESTED_RUN_PENDING 0x00000002 #define KVM_STATE_NESTED_EVMCS 0x00000004 #define KVM_STATE_NESTED_MTF_PENDING 0x00000008 #define KVM_STATE_NESTED_GIF_SET 0x00000100 #define KVM_STATE_NESTED_SMM_GUEST_MODE 0x00000001 #define KVM_STATE_NESTED_SMM_VMXON 0x00000002 #define KVM_STATE_NESTED_VMX_VMCS_SIZE 0x1000 #define KVM_STATE_NESTED_SVM_VMCB_SIZE 0x1000 #define KVM_STATE_VMX_PREEMPTION_TIMER_DEADLINE 0x00000001 /* attributes for system fd (group 0) */ #define KVM_X86_XCOMP_GUEST_SUPP 0 struct kvm_vmx_nested_state_data { __u8 vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE]; __u8 shadow_vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE]; }; struct kvm_vmx_nested_state_hdr { __u64 vmxon_pa; __u64 vmcs12_pa; struct { __u16 flags; } smm; __u16 pad; __u32 flags; __u64 preemption_timer_deadline; }; struct kvm_svm_nested_state_data { /* Save area only used if KVM_STATE_NESTED_RUN_PENDING. */ __u8 vmcb12[KVM_STATE_NESTED_SVM_VMCB_SIZE]; }; struct kvm_svm_nested_state_hdr { __u64 vmcb_pa; }; /* for KVM_CAP_NESTED_STATE */ struct kvm_nested_state { __u16 flags; __u16 format; __u32 size; union { struct kvm_vmx_nested_state_hdr vmx; struct kvm_svm_nested_state_hdr svm; /* Pad the header to 128 bytes. */ __u8 pad[120]; } hdr; /* * Define data region as 0 bytes to preserve backwards-compatability * to old definition of kvm_nested_state in order to avoid changing * KVM_{GET,PUT}_NESTED_STATE ioctl values. */ union { struct kvm_vmx_nested_state_data vmx[0]; struct kvm_svm_nested_state_data svm[0]; } data; }; /* for KVM_CAP_PMU_EVENT_FILTER */ struct kvm_pmu_event_filter { __u32 action; __u32 nevents; __u32 fixed_counter_bitmap; __u32 flags; __u32 pad[4]; __u64 events[0]; }; #define KVM_PMU_EVENT_ALLOW 0 #define KVM_PMU_EVENT_DENY 1 /* for KVM_{GET,SET,HAS}_DEVICE_ATTR */ #define KVM_VCPU_TSC_CTRL 0 /* control group for the timestamp counter (TSC) */ #define KVM_VCPU_TSC_OFFSET 0 /* attribute for the TSC offset */ #endif /* _ASM_X86_KVM_H */
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