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- Use native ARM64 runners (ubuntu-24.04-arm) for arm64 jobs instead of emulating arm64 on x86 via QEMU without KVM acceleration - Remove heavy env action from distro-qemu tests (was installing Rust, protoc, cross-compile tools - none needed for these tests) - Cache kernel images to avoid Docker pulls on every run - Add --no-install-recommends to debootstrap installation Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
run-tests.sh had an inverted KVM check (enabled KVM when vmx/svm was NOT found), causing arm64 integration tests to fail on ARM runners that lack /dev/kvm. Switch both scripts to check /dev/kvm directly, which works correctly on both x86 and ARM. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The distro-qemu tests only need a handful of shared libraries (libc, libm, ld-linux, libgcc_s) and basic shell utilities. Replace the full debootstrap rootfs (~150-300MB) with a minimal rootfs that copies just the needed shared libraries from the host and uses busybox-static for shell/utilities. This reduces the initramfs from ~50MB to ~5MB and eliminates the debootstrap download/install step entirely. The rootfs now contains only: - busybox (static) for sh, mount, dmesg, poweroff, etc. - Shared libraries detected via ldd on the test binaries - libm.so (explicitly copied for rtld dlopen test) - Test binaries and parcagpu .so Also removes the DISTRO/RELEASE/MIRROR configuration and sudo requirements (no more chroot operations). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add ::> timing markers to build-and-run.sh to profile where time is spent: parcagpu download, go test -c, rootfs creation, initramfs creation, QEMU execution, and per-test timing inside the VM. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The initramfs (test binaries + busybox + shared libs) is arch-specific but kernel-independent. Split into: - build-distro-qemu-initramfs: builds once per arch, uploads artifact - distro-qemu-tests: downloads initramfs + kernel, runs QEMU only This avoids rebuilding Go test binaries and the rootfs for every kernel version (was ~46s per job on amd64: 27s go build + 15s rootfs + 4s initramfs). Each test job now only needs QEMU + kernel download. The build-and-run.sh wrapper is kept for local development convenience.
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