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RedBear-OS/local/scripts/test-msix-qemu.sh
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2026-04-15 12:57:45 +01:00

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#!/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"