Fedora reawakens the hibernation debate

The way I would do it - create a flag file on the root partition of the system, so during the boot up the initramfs mounts the root volume as RO and checks for this flag. If it can find it, it reads the suspend image and checks for the presence of the suspend signature.

If it's present, attempt the resume (via another IOCTL). The kernel reads the saved image, does the CRC check and if everything is OK the control is transferred to the saved image.