runqemu: Mention snapshot in the help output

This is a useful option but not documented in the help text.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/scripts/runqemu b/scripts/runqemu
index 68ba7dcfb94309e33cbb9f5d920551af0f83fe42..1a5aca98ac78aead4f05609603f5df9373e814e5 100755 (executable)
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -73,6 +73,7 @@ of the following environment variables (in any order):
     serial - enable a serial console on /dev/ttyS0
     serialstdio - enable a serial console on the console (regardless of graphics mode)
     slirp - enable user networking, no root privileges is required
+    snapshot - don't write changes to back to images
     kvm - enable KVM when running x86/x86_64 (VT-capable CPU required)
     kvm-vhost - enable KVM with vhost when running x86/x86_64 (VT-capable CPU required)
     publicvnc - enable a VNC server open to all hosts