Davíð Steinn Geirsson
480bfb7095
Implement the virtio balloon statistics virtqueue per the VIRTIO spec, exposing guest memory statistics through a new /vm.balloon-statistics API endpoint. Device layer: add stats virtqueue constants and types, wire up the stats queue in the balloon handler, implement stats request/response handlers, and expose a public request_balloon_statistics function. VMM layer: plumb statistics through device manager, VM, and VMM, add HTTP and D-Bus API endpoints, add ServiceUnavailable (503) to api_client, add balloon-statistics subcommand to ch-remote, and add the endpoint to the OpenAPI spec. The response includes both guest-reported stats and host-known values (balloon_actual_bytes, balloon_target_bytes, balloon_total_ram_bytes) so consumers can understand balloon utilization without querying /vm.info separately. Also fixes pre-existing rustfmt issues and adds clippy+rustfmt to the flake devShell. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
100 lines
2.9 KiB
Nix
100 lines
2.9 KiB
Nix
{
|
|
description = "Cloud Hypervisor — DSG fork";
|
|
|
|
inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
|
|
|
|
outputs =
|
|
{ self, nixpkgs }:
|
|
let
|
|
supportedSystems = [
|
|
"aarch64-linux"
|
|
"riscv64-linux"
|
|
"x86_64-linux"
|
|
];
|
|
forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
|
|
in
|
|
{
|
|
packages = forAllSystems (
|
|
system:
|
|
let
|
|
pkgs = nixpkgs.legacyPackages.${system};
|
|
inherit (pkgs) lib;
|
|
in
|
|
{
|
|
default = self.packages.${system}.cloud-hypervisor;
|
|
|
|
cloud-hypervisor = pkgs.rustPlatform.buildRustPackage (finalAttrs: {
|
|
pname = "cloud-hypervisor";
|
|
version = "50.0.0";
|
|
|
|
src = self;
|
|
|
|
# After updating Cargo.lock with `cargo update`, fill in the hashes
|
|
# for the git-sourced vhost packages by running `nix build` and
|
|
# replacing lib.fakeHash with the hash reported in the error message.
|
|
cargoLock = {
|
|
lockFile = ./Cargo.lock;
|
|
outputHashes = {
|
|
"micro_http-0.1.0" = "sha256-XemdzwS25yKWEXJcRX2l6QzD7lrtroMeJNOUEWGR7WQ=";
|
|
"vhost-0.15.0" = "sha256-iH5Zr9lSlkWhhdOQTSiPQ/mHBaKJ/oamTJZgY68tnGg=";
|
|
"vhost-user-backend-0.21.0" = "sha256-iH5Zr9lSlkWhhdOQTSiPQ/mHBaKJ/oamTJZgY68tnGg=";
|
|
};
|
|
};
|
|
|
|
separateDebugInfo = true;
|
|
|
|
nativeBuildInputs = [ pkgs.pkg-config ];
|
|
buildInputs =
|
|
[ pkgs.openssl ]
|
|
++ lib.optional pkgs.stdenv.hostPlatform.isAarch64 pkgs.dtc;
|
|
|
|
env.OPENSSL_NO_VENDOR = true;
|
|
|
|
cargoTestFlags = [
|
|
"--workspace"
|
|
"--exclude"
|
|
"hypervisor" # /dev/kvm
|
|
"--exclude"
|
|
"net_util" # /dev/net/tun
|
|
"--exclude"
|
|
"virtio-devices" # seccomp
|
|
"--exclude"
|
|
"vmm" # /dev/kvm
|
|
];
|
|
|
|
meta = {
|
|
homepage = "https://git.dsg.is/dsg/cloud-hypervisor";
|
|
description = "Open source Virtual Machine Monitor (VMM) that runs on top of KVM";
|
|
license = with lib.licenses; [
|
|
asl20
|
|
bsd3
|
|
];
|
|
mainProgram = "cloud-hypervisor";
|
|
platforms = [
|
|
"aarch64-linux"
|
|
"riscv64-linux"
|
|
"x86_64-linux"
|
|
];
|
|
};
|
|
});
|
|
}
|
|
);
|
|
|
|
devShells = forAllSystems (
|
|
system:
|
|
let
|
|
pkgs = nixpkgs.legacyPackages.${system};
|
|
inherit (pkgs) lib;
|
|
in
|
|
{
|
|
default = pkgs.mkShell {
|
|
inputsFrom = [ self.packages.${system}.cloud-hypervisor ];
|
|
nativeBuildInputs = with pkgs; [
|
|
clippy
|
|
rustfmt
|
|
];
|
|
};
|
|
}
|
|
);
|
|
};
|
|
}
|