scripts/qemustart: add notes on adding new options

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

diff --git a/scripts/qemustart b/scripts/qemustart
index 2d1f476dde8be2c4cb00d4dfafbde7679f131a7a..dbb8deddafd8093887d6dfcd37d5743a5e1ba48a 100755 (executable)
--- a/scripts/qemustart
+++ b/scripts/qemustart
@@ -124,6 +124,11 @@ parse_args() {
        o_network=
        o_qemu_extra=()
        while [ "$#" -gt 0 ]; do
+               # Cmdline options for the script itself SHOULD try to be
+               # prefixed with two dashes to distinguish them from those for
+               # qemu executables.
+               #
+               # Also note that qemu accepts both --opt and -opt
                case "$1" in
                        --kernel) o_kernel="$2"; shift 2 ;;
                        --rootfs) o_rootfs="$2"; shift 2 ;;