Module controller

crate for the vmm-swap feature.

Structs

SwapController

SwapController provides APIs to control vmm-swap.

SwapDeviceHelper

Helper to create SwapDeviceUffdSender from child processes (e.g. JailWarden for hotplug devices).

SwapDeviceUffdSender

Create a new userfaultfd and send it to the monitor process.

VmmSwapResult 🔒

Enums

Command 🔒

Commands used in vmm-swap feature internally sent to the monitor process from the main and other processes.

State 🔒

Token 🔒

Constants

MAX_SWAP_CHUNK_SIZE 🔒

The max size of chunks to swap out/in at once.

MAX_TRIM_PAGES 🔒

The max pages to trim at once.

Traits

PrepareFork

Create a new SwapDeviceUffdSender which is passed to the forked child process.

Functions

abort_background_job 🔒

count_resident_pages 🔒

Returns count of pages active on the guest memory.

handle_enable_command 🔒

handle_vmm_swap 🔒

monitor_process 🔒

The main thread of the monitor process.

move_guest_to_staging 🔒

regions_from_guest_memory 🔒