kvm

package
v0.0.0-...-9c233c6 Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: Feb 19, 2024 License: MIT Imports: 5 Imported by: 0

Documentation

Overview

Package kvm provides minimal wrappers for some KVM ioctls. It is pure Go: Instead of using Cgo to include linux/kvm.h, the package includes a magic.go file generated by kvm-gen-magic.

Passages from kvm/api.txt are marked with double quotes in the function docs.

https://www.kernel.org/doc/Documentation/virtual/kvm/api.txt https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/include/uapi/linux/kvm.h https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/arch/x86/include/uapi/asm/kvm.h

Index

Constants

View Source 
const (
	CapIRQChip                  = Cap(0)
	CapHLT                      = Cap(1)
	CapMMUShadowCacheControl    = Cap(2)
	CapUserMemory               = Cap(3)
	CapSetTSSAddr               = Cap(4)
	CapVAPIC                    = Cap(6)
	CapExtCPUID                 = Cap(7)
	CapClockSource              = Cap(8)
	CapNrVCPUs                  = Cap(9)
	CapNrMemslots               = Cap(10)
	CapPIT                      = Cap(11)
	CapNopIODelay               = Cap(12)
	CapPVMMU                    = Cap(13)
	CapMPState                  = Cap(14)
	CapCoalescedMMIO            = Cap(15)
	CapSyncMMU                  = Cap(16)
	CapIOMMU                    = Cap(18)
	CapDestroyMemoryRegionWorks = Cap(21)
	CapUserNMI                  = Cap(22)
	CapSetGuestDebug            = Cap(23)
	CapReinjectControl          = Cap(24)
	CapIRQRouting               = Cap(25)
	CapIRQInjectStatus          = Cap(26)
	CapAssignDevIRQ             = Cap(29)
	CapJoinMemoryRegionsWorks   = Cap(30)
	CapMCE                      = Cap(31)
	CapIRQFD                    = Cap(32)
	CapPIT2                     = Cap(33)
	CapSetBootCPUID             = Cap(34)
	CapPITState2                = Cap(35)
	CapIOEventFD                = Cap(36)
	CapSetIdentityMapAddr       = Cap(37)
	CapXenHVM                   = Cap(38)
	CapAdjustClock              = Cap(39)
	CapInternalErrorData        = Cap(40)
	CapVCPUEvents               = Cap(41)
	CapS390PSW                  = Cap(42)
	CapPPCSegState              = Cap(43)
	CapHyperV                   = Cap(44)
	CapHyperVVAPIC              = Cap(45)
	CapHyperVSpin               = Cap(46)
	CapPCISegment               = Cap(47)
	CapPPCPairedSingles         = Cap(48)
	CapIntrShadow               = Cap(49)
	CapDebugRegs                = Cap(50)
	CapX86RobustSingleStep      = Cap(51)
	CapPPCOSI                   = Cap(52)
	CapPPCUnsetIRQ              = Cap(53)
	CapEnableCap                = Cap(54)
	CapXSave                    = Cap(55)
	CapXCRS                     = Cap(56)
	CapPPCGetPVInfo             = Cap(57)
	CapPPCIRQLevel              = Cap(58)
	CapAsyncPF                  = Cap(59)
	CapTSCControl               = Cap(60)
	CapGetTSCKHz                = Cap(61)
	CapPPCBookeSRegs            = Cap(62)
	CapSPAPRTCE                 = Cap(63)
	CapPPCSMT                   = Cap(64)
	CapPPCRMA                   = Cap(65)
	CapMaxVCPUs                 = Cap(66)
	CapPPCHIOR                  = Cap(67)
	CapPPCPAPR                  = Cap(68)
	CapSWTLB                    = Cap(69)
	CapOneReg                   = Cap(70)
	CapS390GMap                 = Cap(71)
	CapTSCDeadlineTimer         = Cap(72)
	CapS390UControl             = Cap(73)
	CapSyncRegs                 = Cap(74)
	CapPCI23                    = Cap(75)
	CapKVMClockCtrl             = Cap(76)
	CapSignalMSI                = Cap(77)
	CapPPCGetSMMUInfo           = Cap(78)
	CapS390COW                  = Cap(79)
	CapPPCAllocHTAB             = Cap(80)
	CapReadonlyMem              = Cap(81)
	CapIRQFDResample            = Cap(82)
	CapPPCBookeWatchdog         = Cap(83)
	CapPPCHTABFD                = Cap(84)
	CapS390CSSSupport           = Cap(85)
	CapPPCEPR                   = Cap(86)
	CapARMPSCI                  = Cap(87)
	CapARMSetDeviceAddr         = Cap(88)
	CapDeviceCtrl               = Cap(89)
	CapIRQMPIC                  = Cap(90)
	CapPPCRTAS                  = Cap(91)
	CapIRQXICS                  = Cap(92)
	CapARMEL132Bit              = Cap(93)
	CapSPAPRMultitce            = Cap(94)
	CapExtEmulCPUID             = Cap(95)
	CapHyperVTime               = Cap(96)
	CapIOAPICPolarityIgnored    = Cap(97)
	CapEnableCapVM              = Cap(98)
	CapS390IRQChip              = Cap(99)
	CapIOEventFDNoLength        = Cap(100)
	CapVMAttributes             = Cap(101)
	CapARMPSCI02                = Cap(102)
	CapPPCFixupHCall            = Cap(103)
	CapPPCEnableHCall           = Cap(104)
	CapCheckExtensionVM         = Cap(105)
	CapS390UserSIGP             = Cap(106)
	CapS390VectorRegisters      = Cap(107)
	CapS390MemOp                = Cap(108)
	CapS390UserSTSI             = Cap(109)
	CapS390SKeys                = Cap(110)
	CapMIPSFPU                  = Cap(111)
	CapMIPSMSA                  = Cap(112)
	CapS390InjectIRQ            = Cap(113)
	CapS390IRQState             = Cap(114)
	CapPPCHWRNG                 = Cap(115)
	CapDisableQuirks            = Cap(116)
	CapX86SMM                   = Cap(117)
	CapMultiAddressSpace        = Cap(118)
	CapGuestDebugHWBPS          = Cap(119)
	CapGuestDebugHWWPS          = Cap(120)
	CapSplitIRQChip             = Cap(121)
	CapIOEventFDAnyLength       = Cap(122)
	CapHyperVSYNIC              = Cap(123)
	CapS390RI                   = Cap(124)
	CapSPAPRTCE64               = Cap(125)
	CapARMPMUv3                 = Cap(126)
	CapVCPUAttributes           = Cap(127)
	CapMaxVCPUID                = Cap(128)
	CapX2APICAPI                = Cap(129)
	CapS390UserInstr0           = Cap(130)
	CapMSIDevid                 = Cap(131)
	CapPPCHTM                   = Cap(132)
	CapSPAPRResizeHPT           = Cap(133)
	CapPPCMMURadix              = Cap(134)
	CapPPCMMUHashV3             = Cap(135)
	CapImmediateExit            = Cap(136)
	CapMIPSVZ                   = Cap(137)
	CapMIPSTE                   = Cap(138)
	CapMIPS64Bit                = Cap(139)
	CapS390GS                   = Cap(140)
	CapS390AIS                  = Cap(141)
	CapSPAPRTCEVFIO             = Cap(142)
	CapX86DisableExits          = Cap(143)
	CapARMUserIRQ               = Cap(144)
	CapS390CMMAMigration        = Cap(145)
	CapPPCFWNMI                 = Cap(146)
	CapPPCSMTPossible           = Cap(147)
	CapHyperVSYNIC2             = Cap(148)
	CapHyperVVPIndex            = Cap(149)
	CapS390AISMigration         = Cap(150)
	CapPPCGetCPUChar            = Cap(151)
	CapS390BPB                  = Cap(152)
	CapGetMSRFeatures           = Cap(153)
	CapHyperVEventFD            = Cap(154)
	CapHyperVTLBFlush           = Cap(155)
	CapS390HPage1M              = Cap(156)
	CapNestedState              = Cap(157)
	CapARMINJECTSERRORESR       = Cap(158)
	CapMSRPlatformInfo          = Cap(159)
	CapPPCNestedHV              = Cap(160)
	CapHyperVSendIPI            = Cap(161)
	CapCoalescedPIO             = Cap(162)
	CapHyperVEnlightenedVMCS    = Cap(163)
	CapExceptionPayload         = Cap(164)
	CapARMVMIPASize             = Cap(165)
	CapManualDirtyLogProtect    = Cap(166)
	CapHyperVCPUID              = Cap(167)
	CapManualDirtyLogProtect2   = Cap(168)
	CapPPCIRQXIVE               = Cap(169)
	CapARMSVE                   = Cap(170)
	CapARMPtrauthAddress        = Cap(171)
	CapARMPtrauthGeneric        = Cap(172)
	CapPMUEventFilter           = Cap(173)
	CapARMIRQLineLayout2        = Cap(174)
	CapHyperVDirectTLBFlush     = Cap(175)
	CapPPCGuestDebugSStep       = Cap(176)
	CapARMNISVToUser            = Cap(177)
	CapARMInjectExtDABT         = Cap(178)
	CapS390VCPUResets           = Cap(179)
	CapS390Protected            = Cap(180)
	CapPPCSecureGuest           = Cap(181)
	CapHaltPoll                 = Cap(182)
	CapAsyncPFInt               = Cap(183)
	CapLastCPU                  = Cap(184)
	CapSmallerMaxPhyAddr        = Cap(185)
	CapS390Diag318              = Cap(186)
	CapStealTime                = Cap(187)
	CapX86UserSpaceMSR          = Cap(188)
	CapX86MSRFilter             = Cap(189)
	CapEnforcePVFeatureCPUID    = Cap(190)
	CapSysHyperVCPUID           = Cap(191)
	CapDirtyLogRing             = Cap(192)
	CapX86BusLockExit           = Cap(193)
	CapPPCDAWR1                 = Cap(194)
	CapSetGuestDebug2           = Cap(195)
	CapSGXAttribute             = Cap(196)
	CapVMCopyEncContextFrom     = Cap(197)
	CapPTPKVM                   = Cap(198)
	CapHyperVEnforceCPUID       = Cap(199)
	CapSRegs2                   = Cap(200)
	CapExitHypercall            = Cap(201)
	CapPPCRPTInvalidate         = Cap(202)
	CapBinaryStatsFD            = Cap(203)
	CapExitOnEmulationFailure   = Cap(204)
	CapARMMTE                   = Cap(205)
	CapVMMoveEncContextFrom     = Cap(206)
	CapVMGPABits                = Cap(207)
	CapXSave2                   = Cap(208)
	CapSysAttributes            = Cap(209)
	CapPPCAILMode3              = Cap(210)
	CapS390MemOpExtension       = Cap(211)
	CapPMUCapability            = Cap(212)
	CapDisableQuirks2           = Cap(213)
	CapVMTSCControl             = Cap(214)
	CapSystemEventData          = Cap(215)
	CapARMSuspend               = Cap(216)
	CapS390ProtectedDump        = Cap(217)
	CapX86TripleFaultEvent      = Cap(218)
	CapX86NotifyVMExit          = Cap(219)
	CapVMDisableNXHugePages     = Cap(220)
	CapS390ZPCIOp               = Cap(221)
	CapS390CPUTopology          = Cap(222)
	CapDirtyLogRingAcqRel       = Cap(223)
)
View Source 
const (
	ExitUnknown       = Exit(0)
	ExitException     = Exit(1)
	ExitIO            = Exit(2)
	ExitHypercall     = Exit(3)
	ExitDebug         = Exit(4)
	ExitHLT           = Exit(5)
	ExitMMIO          = Exit(6)
	ExitIRQWindowOpen = Exit(7)
	ExitShutdown      = Exit(8)
	ExitFailEntry     = Exit(9)
	ExitIntr          = Exit(10)
	ExitSetTPR        = Exit(11)
	ExitTPRAccess     = Exit(12)
	ExitS390SIEIC     = Exit(13)
	ExitS390Reset     = Exit(14)
	ExitDCR           = Exit(15)
	ExitNMI           = Exit(16)
	ExitInternalError = Exit(17)
	ExitOSI           = Exit(18)
	ExitPAPRHCALL     = Exit(19)
	ExitS390UControl  = Exit(20)
	ExitWatchdog      = Exit(21)
	ExitS390TSCH      = Exit(22)
	ExitEPR           = Exit(23)
	ExitSystemEvent   = Exit(24)
	ExitS390STSI      = Exit(25)
	ExitIOAPICEOI     = Exit(26)
	ExitHyperV        = Exit(27)
	ExitARMNISV       = Exit(28)
	ExitX86RDMSR      = Exit(29)
	ExitX86WRMSR      = Exit(30)
	ExitDirtyRingFull = Exit(31)
	ExitAPResetHold   = Exit(32)
	ExitX86BusLock    = Exit(33)
	ExitXen           = Exit(34)
	ExitRISCVSBI      = Exit(35)
	ExitRISCVCSR      = Exit(36)
	ExitNotify        = Exit(37)
)
View Source 
const (
	MemLogDirtyPages = 1
	MemReadonly      = 2
)
View Source 
const (
	CPUIDFlagSignificantIndex = 1
	CPUIDFlagStatefulFunc     = 2
	CPUIDFlagStateReadNext    = 4
)
View Source 
const (
	PITSpeakerDummy = 1
)
View Source 
const StableAPIVersion = 12

StableAPIVersion is the expected return value of GetAPIVersion.

Variables

This section is empty.

Functions

func CheckExtension 

func CheckExtension(f interface{ Fd() uintptr }, cap Cap) (int, error)

CheckExtension returns a non-zero value if the extension identified by the given capability is available. "Generally 0 means no and 1 means yes, but some extensions may report additional information in the integer return value."

If CheckExtension(dev, CapCheckExtensionVM) returns 1, then CheckExtension can also be used to test VM extensions.

func CreateIRQChip 

func CreateIRQChip(vm *VM) error

CreateIRQChip "creates an interrupt controller model in the kernel." This ioctl is available if CheckExtension(CapIRQChip) returns 1.

func CreatePIT2 

func CreatePIT2(vm *VM, cfg *PITConfig) error

CreatePIT2 "Creates an in-kernel device model for the i8254 PIT. This call is only valid after enabling in-kernel irqchip support via KVM_CREATE_IRQCHIP."

This ioctl is available if CheckExtension(CapPIT2) returns 1.

func GetAPIVersion 

func GetAPIVersion(sys *os.File) (int, error)

GetAPIVersion returns the KVM API version, normally StableAPIVersion.

func GetClock 

func GetClock(vm *VM, data *ClockData) error

GetClock returns "the current timestamp of kvmclock as seen by the current guest." This ioctl is available if CheckExtension(CapAdjustClock) returns a non-zero value.

func GetFPU 

func GetFPU(vcpu *VCPU, fpu *FPU) error

GetFPU reads floating-point state from the VCPU.

func GetMSRFeatureIndexList 

func GetMSRFeatureIndexList(sys *os.File) (indices []int, err error)

GetMSRFeatureIndexList "returns the list of MSRs that can be passed to the KVM_GET_MSRS system ioctl. This lets userspace probe host capabilities and processor features that are exposed via MSRs (e.g., VMX capabilities). This list also varies by kvm version and host processor, but does not change otherwise."

This ioctl is available if CheckExtension(CapGetMSRFeatures) returns 1.

func GetMSRIndexList 

func GetMSRIndexList(sys *os.File) (indices []int, err error)

GetMSRIndexList "returns the guest msrs that are supported. The list varies by kvm version and host processor, but does not change otherwise."

func GetRegs 

func GetRegs(vcpu *VCPU, regs *Regs) error

GetRegs reads the vcpu's general-purpose registers.

func GetSregs 

func GetSregs(vcpu *VCPU, sregs *Sregs) error

GetSregs reads the vcpu's special registers.

func GetVCPUMmapSize 

func GetVCPUMmapSize(sys *os.File) (int, error)

GetVCPUMmapSize returns the byte size of the shared memory region used by the KVM_RUN ioctl.

func IRQFD 

func IRQFD(vm *VM, cfg *IRQFDConfig) error

IRQFD "allows setting an eventfd to directly trigger a guest interrupt. IRQFDConfig.Fd specifies the file descriptor to use as the eventfd and IRQFDConfig.GSI specifies the irqchip pin toggled by this event. When an event is triggered on the eventfd, an interrupt is injected into the guest using the specified gsi pin. The irqfd is removed using the KVM_IRQFD_FLAG_DEASSIGN flag, specifying both IRQFDConfig.Fd and IRQFDConfig.GSI."

func Run 

func Run(vcpu *VCPU) error

Run runs the given vcpu. It returns EINTR if "an unmasked signal is pending".

func SetCPUID2 

func SetCPUID2(vcpu *VCPU, entries []CPUIDEntry2) error

SetCPUID2 "defines the vcpu responses to the cpuid instruction." This ioctl is available if CheckExtension(CapExtCPUID) returns 1.

func SetClock 

func SetClock(vm *VM, data *ClockData) error

SetClock "[s]ets the current timestamp of kvmclock to the value specified in its parameter." This ioctl is available if CheckExtension(CapAdjustClock) returns a non-zero value.

func SetFPU 

func SetFPU(vcpu *VCPU, fpu *FPU) error

SetFPU writes floating-point state to the VCPU.

func SetIdentityMapAddr 

func SetIdentityMapAddr(vm *VM, addr uint64) error

SetIdentityMapAddr "defines the physical address of a one-page region in the guest physical address space. The region must be within the first 4GB of the guest physical address space and must not conflict with any memory slot or any mmio address. The guest may malfunction if it accesses this memory region."

"Setting the address to 0 will result in resetting the address to its default (0xfffbc000)."

"This ioctl is required on Intel-based hosts. This is needed on Intel hardware because of a quirk in the virtualization implementation (see the internals documentation when it pops into existence)."

SetIdentityMapAddr fails if it is called after CreateVCPU.

func SetMSRs 

func SetMSRs(vcpu *VCPU, entries []MSREntry) error

SetMSRs writes model-specific registers to the VCPU.

func SetRegs 

func SetRegs(vcpu *VCPU, regs *Regs) error

SetRegs writes the vcpu's general-purpose registers.

func SetSregs 

func SetSregs(vcpu *VCPU, sregs *Sregs) error

SetSregs writes the vcpu's special registers.

func SetTSSAddr 

func SetTSSAddr(vm *VM, addr uint64) error

SetTSSAddr "defines the physical address of a three-page region in the guest physical address space. The region must be within the first 4GB of the guest physical address space and must not conflict with any memory slot or any mmio address. The guest may malfunction if it accesses this memory region."

"This ioctl is required on Intel-based hosts. This is needed on Intel hardware because of a quirk in the virtualization implementation (see the internals documentation when it pops into existence)."

This ioctl is available if CheckExtension(CapSetTSSAddr) returns 1.

func SetUserMemoryRegion 

func SetUserMemoryRegion(vm *VM, region *UserspaceMemoryRegion) error

SetUserMemoryRegion "allows the user to create, modify or delete a guest physical memory slot." This ioctl is available if CheckExtension(CapUserMemory) returns 1.

Types

type CPUIDEntry2 

type CPUIDEntry2 struct {
	Function uint32
	Index    uint32
	Flags    uint32
	EAX      uint32
	EBX      uint32
	ECX      uint32
	EDX      uint32
	// contains filtered or unexported fields
}

CPUIDEntry has the same layout as the C struct kvm_cpuid_entry2.

func GetSupportedCPUID 

func GetSupportedCPUID(sys *os.File) ([]CPUIDEntry2, error)

GetSupportedCPUID "returns x86 cpuid features which are supported by both the hardware and kvm in its default configuration. Userspace can use the information returned by this ioctl to construct cpuid information (for KVM_SET_CPUID2) that is consistent with hardware, kernel, and userspace capabilities, and with user requirements (for example, the user may wish to constrain cpuid to emulate older hardware, or for feature consistency across a cluster)."

See 4.46 KVM_GET_SUPPORTED_CPUID in kvm/api.txt for more.

This ioctl is available if CheckExtension(CapExtCPUID) returns 1.

type Cap 

type Cap int

Cap is a KVM_CHECK_EXTENSION identifier.

func AllCaps 

func AllCaps() []Cap

AllCaps returns a slice containing all known extension identifiers.

func (Cap) String 

func (c Cap) String() string

String returns the name of the capability.

type ClockData 

type ClockData struct {
	Clock uint64
	Flags uint32
	// contains filtered or unexported fields
}

ClockData has the same layout as the C struct kvm_clock_data.

type Dtable 

type Dtable struct {
	Base  uint64
	Limit uint16
	// contains filtered or unexported fields
}

Dtable has the same layout as the C struct kvm_dtable.

type Exit 

type Exit uint32

Exit is a KVM_RUN exit reason.

func (Exit) String 

func (e Exit) String() string

String returns the name of the exit reason.

type FPU 

type FPU struct {
	FPR  [8][16]byte
	FCW  uint16
	FSW  uint16
	FTWX uint8

	LastOpcode uint16
	LastIP     uint64
	LastDP     uint64
	XMM        [16][16]byte
	MXCSR      uint32
	// contains filtered or unexported fields
}

FPU holds a VCPU's floating-point state. It has the same layout as the C struct kvm_fpu.

type IOExitData 

type IOExitData struct {
	IsOut  bool
	Size   uint8
	Port   uint16
	Count  uint32
	Offset uint64
}

IOExitData is the result of a KVM_EXIT_IO vmexit. It has the same layout as the "io" member of the union of vmexit data in struct kvm_run.

type IRQFDConfig 

type IRQFDConfig struct {
	Fd         uint32
	GSI        uint32
	Flags      uint32
	ResampleFD uint32
	// contains filtered or unexported fields
}

IRQFDConfig has the same layout as struct kvm_irqfd.

type MMIOExitData 

type MMIOExitData struct {
	PhysAddr uint64
	Data     [8]uint8
	Len      uint32
	IsWrite  bool
	// contains filtered or unexported fields
}

MMIOExitData is the result of a KVM_EXIT_MMIO vmexit. It has the same layout as the "mmio" member of the union of vmexit data in struct kvm_run.

type MSREntry 

type MSREntry struct {
	Index uint32

	Data uint64
	// contains filtered or unexported fields
}

MSREntry has the same layout as the C struct kvm_msr_entry.

func GetMSRs 

func GetMSRs(f interface{ Fd() uintptr }, indices []int) ([]MSREntry, error)

GetMSRs reads model-specific registers from the VCPU. The given indices should come from GetMSRIndexList. If CheckExtension(CapSetMSRFeatures) returns 1, GetMSRs can also read the values of MSR-based features that are available from the system. In this case, the given indices should come from GetMSRFeatureIndexList.

type PITConfig 

type PITConfig struct {
	Flags uint32
	// contains filtered or unexported fields
}

PITConfig has the same layout as the C struct kvm_pit_config.

type Regs 

type Regs struct {
	RAX, RBX, RCX, RDX uint64
	RSI, RDI, RSP, RBP uint64
	R8, R9, R10, R11   uint64
	R12, R13, R14, R15 uint64
	RIP, RFlags        uint64
}

Regs holds a VCPU's general-purpose registers. It has the same layout as the C struct kvm_regs.

type Segment 

type Segment struct {
	Base                           uint64
	Limit                          uint32
	Selector                       uint16
	Type                           uint8
	Present, DPL, DB, S, L, G, Avl uint8
	Unusable                       uint8
	// contains filtered or unexported fields
}

Segment has the same layout as the C struct kvm_segment.

type Sregs 

type Sregs struct {
	CS, DS, ES, FS, GS, SS  Segment
	TR, LDT                 Segment
	GDT, IDT                Dtable
	CR0, CR2, CR3, CR4, CR8 uint64
	EFER                    uint64
	APICBase                uint64
	InterruptBitmap         [((nrInterrupts + 63) / 64)]uint64
}

Sregs holds a VCPU's special registers. It has the same layout as the C struct kvm_sregs.

type UserspaceMemoryRegion 

type UserspaceMemoryRegion struct {
	Slot          uint32
	Flags         uint32
	GuestPhysAddr uint64
	MemorySize    uint64
	UserspaceAddr uint64
}

UserspaceMemoryRegion has the same layout as the C struct kvm_userspace_memory_region.

type VCPU 

type VCPU struct {
	*os.File
}

VCPU is a virtual CPU file descriptor.

func CreateVCPU 

func CreateVCPU(vm *VM, id int) (*VCPU, error)

CreateVCPU adds a VCPU to the given VM. It returns the new VCPU's file descriptor. The given id identifies the VCPU within the VM. Normally the first VCPU has id 0, the second has id 1, and so on.

type VCPUState 

type VCPUState struct {
	ImmediateExit uint8 // in

	ExitReason Exit
	// contains filtered or unexported fields
}

VCPUState has roughly the same layout as struct kvm_run.

func (*VCPUState) IOExitData 

func (s *VCPUState) IOExitData() *IOExitData

IOExitData returns data describing the present KVM_EXIT_IO vmexit. The result is undefined (but bad) if the exit reason is not KVM_EXIT_IO.

func (*VCPUState) MMIOExitData 

func (s *VCPUState) MMIOExitData() *MMIOExitData

MMIOExitData returns data describing the present KVM_EXIT_MMIO vmexit. The result is undefined (but bad) if the exit reason is not KVM_EXIT_MMIO.

type VM 

type VM struct {
	*os.File
}

VM is a virtual machine file descriptor.

func CreateVM 

func CreateVM(sys *os.File) (*VM, error)

CreateVM creates a new VM and returns its file descriptor.

Source Files

View all Source files

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL
go.dev uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Learn more.