Crate uhyve_interface

Uhyve Hypervisor Interface

The uhyve hypercall interface works as follows:

• On x86_64 you use an out port instruction. The address of the out-port corresponds to the hypercall you want to use. You can obtain it from the [IoPorts] enum. The data send to that port is the physical memory address (of the VM) of the parameters of that hypercall.
• On aarch64 you write to the respective HypercallAddress. The 64-bit value written to that location is the guest’s physical memory address of the hypercall’s parameter.

Modules

• elf
  Utility to place the uhyve interface version in the elf header of the hermit kernel.
• parameters
  Parameters for hypercalls.

Macros

• define_uhyve_interface_version
  Defines the uhyve interface version in the note section.

Enums

• Hypercall
  Hypervisor calls available in uhyve with their respective parameters. See the module level documentation on how to invoke them.
• HypercallAddress
  Enum containing all valid port mappings for hypercalls.

Constants

• MAX_ARGC_ENVC
  The maximum number of items in an argument of environment vector.
• UHYVE_INTERFACE_VERSION
  The version of the uhyve interface. Note: This is not the same as the semver of the crate but should be increased on every version bump that changes the API.
• UHYVE_PORT_NETWRITE