kvm

Documentation

Overview

Package kvm provides a kvm-based implementation of the platform interface.

Index

• func OpenDevice(devicePath string) (*os.File, error)
• type KVM
  • func New(deviceFile *os.File) (*KVM, error)
  • func (*KVM) CooperativelySchedulesAddressSpace() bool
  • func (*KVM) MapUnit() uint64
  • func (*KVM) MaxUserAddress() hostarch.Addr
  • func (*KVM) MinUserAddress() hostarch.Addr
  • func (k *KVM) NewAddressSpace(any) (platform.AddressSpace, <-chan struct{}, error)
  • func (k *KVM) NewContext(pkgcontext.Context) platform.Context
  • func (*KVM) SupportsAddressSpaceIO() bool
  • func (k *KVM) SyscallFilters() seccomp.SyscallRules

Functions

func OpenDevice

func OpenDevice(devicePath string) (*os.File, error)

OpenDevice opens the KVM device and returns the File. If the devicePath is empty, it will default to /dev/kvm.

Types

type KVM

type KVM struct {
	platform.NoCPUPreemptionDetection

	// KVM never changes mm_structs.
	platform.UseHostProcessMemoryBarrier

	platform.DoesOwnPageTables
	// contains filtered or unexported fields
}

KVM represents a lightweight VM context.

func New

func New(deviceFile *os.File) (*KVM, error)

New returns a new KVM-based implementation of the platform interface.

func (*KVM) CooperativelySchedulesAddressSpace

func (*KVM) CooperativelySchedulesAddressSpace() bool

CooperativelySchedulesAddressSpace implements platform.Platform.CooperativelySchedulesAddressSpace.

func (*KVM) MapUnit

func (*KVM) MapUnit() uint64

MapUnit implements platform.Platform.MapUnit.

func (*KVM) MaxUserAddress

func (*KVM) MaxUserAddress() hostarch.Addr

MaxUserAddress returns the first address that may not be used.

func (*KVM) MinUserAddress

func (*KVM) MinUserAddress() hostarch.Addr

MinUserAddress returns the lowest available address.

func (*KVM) NewAddressSpace

func (k *KVM) NewAddressSpace(any) (platform.AddressSpace, <-chan struct{}, error)

NewAddressSpace returns a new pagetable root.

func (*KVM) NewContext

func (k *KVM) NewContext(pkgcontext.Context) platform.Context

NewContext returns an interruptible context.

func (*KVM) SupportsAddressSpaceIO

func (*KVM) SupportsAddressSpaceIO() bool

SupportsAddressSpaceIO implements platform.Platform.SupportsAddressSpaceIO.

func (*KVM) SyscallFilters

func (k *KVM) SyscallFilters() seccomp.SyscallRules

SyscallFilters returns syscalls made exclusively by the KVM platform.