test: on-hardware SMP self-test (revoke/kill must stop every hart) + make test-qemu

scripts/make-disk-image.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 set -euo pipefail
 
-IMG="boot.img"
+IMG="${IMG:-boot.img}"
 IMG_SIZE_KB=4096
 TARGET="riscv64gc-unknown-none-elf"
 BUILD_DIR="target/${TARGET}/release"
@@ -30,6 +30,10 @@ copy log-server     "log.elf"
 copy permission-manager "permis.elf"
 copy storage-qemu   "storage.elf"
 copy session-server "session.elf"
+# Only the test image: its presence makes init run the SMP self-test.
+if [ -n "${SMPTEST:-}" ]; then
+    copy smptest    "smptest.elf"
+fi
 
 echo ""
 echo "Disk contents:"

scripts/test-qemu.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+# Boots IMAGE headless and waits for init's SMP self-test to report; the
+# machine halts itself when done. Exit 0 only on "SMPTEST PASS".
+set -uo pipefail
+
+IMAGE="${1:?usage: test-qemu.sh IMAGE}"
+SMP="${SMP:-4}"
+KERNEL="target/riscv64gc-unknown-none-elf/release/adapter-riscv"
+LOG="$(mktemp -t kos-test-qemu.XXXXXX)"
+
+timeout ${QT:-120} qemu-system-riscv64 -machine virt -smp "${SMP}" -bios default \
+    -kernel "${KERNEL}" \
+    -drive "file=${IMAGE},if=none,format=raw,id=hd0" -device virtio-blk-device,drive=hd0 \
+    -device virtio-gpu-device -device virtio-keyboard-device \
+    -display none -serial "file:${LOG}" -monitor none
+status=$?
+
+grep -a "smptest:\|SMPTEST" "${LOG}"
+if grep -aq "SMPTEST PASS" "${LOG}"; then
+    echo "test-qemu: pass (${SMP} harts)"
+    rm -f "${LOG}"
+    exit 0
+fi
+[ "${status}" -eq 124 ] && echo "test-qemu: timed out"
+echo "test-qemu: FAIL, last serial output (${LOG}):"
+tail -20 "${LOG}"
+exit 1