hw/vfio/iommufd: report hint to user when vfio-dev/vfio*/dev is missing

Give a hint about missing kernel config CONFIG_VFIO_DEVICE_CDEV.

Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-ID: <20260319205942.367705-3-pierrick.bouvier@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Pierrick Bouvier
2026-03-19 13:59:42 -07:00
committed by Philippe Mathieu-Daudé
parent 45a0241365
commit 04249f0f94

View File

@@ -274,7 +274,10 @@ static int iommufd_cdev_getfd(const char *sysfs_path, Error **errp)
}
if (!g_file_get_contents(vfio_dev_path, &contents, &length, NULL)) {
error_setg(errp, "failed to load \"%s\"", vfio_dev_path);
error_setg(errp,
"failed to load \"%s\""
" (is your kernel config missing CONFIG_VFIO_DEVICE_CDEV?)",
vfio_dev_path);
goto out_close_dir;
}