Add runtime validation helpers

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
2026-04-15 12:57:45 +01:00
parent 466b5be0e7
commit 2f3b4f6a60
4 changed files with 393 additions and 39 deletions
@@ -0,0 +1,97 @@
+#!/usr/bin/env bash
+# Validate a live MSI-X runtime path in QEMU using the existing virtio-net stack.
+
+set -euo pipefail
+
+find_uefi_firmware() {
+    local candidates=(
+        "/usr/share/ovmf/x64/OVMF.4m.fd"
+        "/usr/share/OVMF/x64/OVMF.4m.fd"
+        "/usr/share/ovmf/x64/OVMF_CODE.4m.fd"
+        "/usr/share/OVMF/x64/OVMF_CODE.4m.fd"
+        "/usr/share/ovmf/OVMF.fd"
+        "/usr/share/OVMF/OVMF_CODE.fd"
+        "/usr/share/qemu/edk2-x86_64-code.fd"
+    )
+    local path
+    for path in "${candidates[@]}"; do
+        if [[ -f "$path" ]]; then
+            printf '%s\n' "$path"
+            return 0
+        fi
+    done
+    return 1
+}
+
+usage() {
+    cat <<'USAGE'
+Usage: test-msix-qemu.sh [config]
+
+Boot a Red Bear image in QEMU and verify a live MSI-X path via virtio-net.
+Defaults to redbear-full.
+USAGE
+}
+
+for arg in "$@"; do
+    case "$arg" in
+        --help|-h|help)
+            usage
+            exit 0
+            ;;
+    esac
+done
+
+config="${1:-redbear-full}"
+arch="${ARCH:-$(uname -m)}"
+image="build/$arch/$config/harddrive.img"
+extra="build/$arch/$config/extra.img"
+log_file="build/$arch/$config/msix-check.log"
+firmware="$(find_uefi_firmware)" || {
+    echo "ERROR: no usable x86_64 UEFI firmware found" >&2
+    exit 1
+}
+
+if [[ ! -f "$image" ]]; then
+    echo "ERROR: missing image $image" >&2
+    echo "Build it first with: ./local/scripts/build-redbear.sh $config" >&2
+    exit 1
+fi
+
+if [[ ! -f "$extra" ]]; then
+    truncate -s 1g "$extra"
+fi
+
+pkill -f "qemu-system-x86_64.*$image" 2>/dev/null || true
+sleep 1
+
+rm -f "$log_file"
+set +e
+timeout 90s qemu-system-x86_64 \
+  -name "Red Bear OS x86_64" \
+  -device qemu-xhci \
+  -smp 4 \
+  -m 2048 \
+  -bios "$firmware" \
+  -chardev stdio,id=debug,signal=off,mux=on \
+  -serial chardev:debug \
+  -mon chardev=debug \
+  -machine q35 \
+  -device ich9-intel-hda -device hda-output \
+  -device virtio-net,netdev=net0 \
+  -netdev user,id=net0 \
+  -object filter-dump,id=f1,netdev=net0,file="build/$arch/$config/network.pcap" \
+  -nographic -vga none \
+  -drive file="$image",format=raw,if=none,id=drv0 \
+  -device nvme,drive=drv0,serial=NVME_SERIAL \
+  -drive file="$extra",format=raw,if=none,id=drv1 \
+  -device nvme,drive=drv1,serial=NVME_EXTRA \
+  -enable-kvm -cpu host \
+  > "$log_file" 2>&1
+set -e
+
+if ! grep -q "virtio: using MSI-X" "$log_file"; then
+    echo "ERROR: no live MSI-X evidence found in $log_file" >&2
+    exit 1
+fi
+
+echo "MSI-X runtime path detected in $log_file"