From fa246a1d06d74219b79d3e78b0cf47851a60d117 Mon Sep 17 00:00:00 2001 From: David Matlack Date: Wed, 26 Nov 2025 23:17:17 +0000 Subject: vfio: selftests: Split run.sh into separate scripts Split run.sh into separate scripts (setup.sh, run.sh, cleanup.sh) to enable multi-device testing, and prepare for VFIO selftests automatically detecting which devices to use for testing by storing device metadata on the filesystem. - setup.sh takes one or more BDFs as arguments and sets up each device. Metadata about each device is stored on the filesystem in the directory: ${TMPDIR:-/tmp}/vfio-selftests-devices Within this directory is a directory for each BDF, and then files in those directories that cleanup.sh uses to cleanup the device. - run.sh runs a selftest by passing it the BDFs of all set up devices. - cleanup.sh takes zero or more BDFs as arguments and cleans up each device. If no BDFs are provided, it cleans up all devices. This split enables multi-device testing by allowing multiple BDFs to be set up and passed into tests: For example: $ tools/testing/selftests/vfio/scripts/setup.sh $ tools/testing/selftests/vfio/scripts/setup.sh $ tools/testing/selftests/vfio/scripts/run.sh echo $ tools/testing/selftests/vfio/scripts/cleanup.sh In the future, VFIO selftests can automatically detect set up devices by inspecting ${TMPDIR:-/tmp}/vfio-selftests-devices. This will avoid the need for the run.sh script. Reviewed-by: Alex Mastro Tested-by: Alex Mastro Reviewed-by: Raghavendra Rao Ananta Signed-off-by: David Matlack Link: https://lore.kernel.org/r/20251126231733.3302983-3-dmatlack@google.com Signed-off-by: Alex Williamson --- tools/testing/selftests/vfio/scripts/setup.sh | 48 +++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100755 tools/testing/selftests/vfio/scripts/setup.sh (limited to 'tools/testing/selftests/vfio/scripts/setup.sh') diff --git a/tools/testing/selftests/vfio/scripts/setup.sh b/tools/testing/selftests/vfio/scripts/setup.sh new file mode 100755 index 000000000000..49a499e51cbe --- /dev/null +++ b/tools/testing/selftests/vfio/scripts/setup.sh @@ -0,0 +1,48 @@ +# SPDX-License-Identifier: GPL-2.0-or-later +set -e + +source $(dirname -- "${BASH_SOURCE[0]}")/lib.sh + +function main() { + local device_bdf + local device_dir + local numvfs + local driver + + if [ $# = 0 ]; then + echo "usage: $0 segment:bus:device.function ..." >&2 + exit 1 + fi + + for device_bdf in "$@"; do + test -d /sys/bus/pci/devices/${device_bdf} + + device_dir=${DEVICES_DIR}/${device_bdf} + if [ -d "${device_dir}" ]; then + echo "${device_bdf} has already been set up, exiting." + exit 0 + fi + + mkdir -p ${device_dir} + + numvfs=$(get_sriov_numvfs ${device_bdf}) + if [ "${numvfs}" ]; then + set_sriov_numvfs ${device_bdf} 0 + echo ${numvfs} > ${device_dir}/sriov_numvfs + fi + + driver=$(get_driver ${device_bdf}) + if [ "${driver}" ]; then + unbind ${device_bdf} ${driver} + echo ${driver} > ${device_dir}/driver + fi + + set_driver_override ${device_bdf} vfio-pci + touch ${device_dir}/driver_override + + bind ${device_bdf} vfio-pci + touch ${device_dir}/vfio-pci + done +} + +main "$@" -- cgit v1.2.3