systemd-hibernate-resume-generator - Unit generator for resume= kernel parameter

systemd-hibernate-resume-generator is a generator that initiates the procedure to resume the system from
       hibernation. When resume= kernel command line option or HibernateLocation EFI variable is detected, it
       enables the systemd-hibernate-resume.service(8) unit, which will instruct the kernel to resume the system
       from the hibernation image.

       systemd-hibernate-resume-generator understands the following kernel command line parameters:

       resume=
           Takes a path to the resume device. Both persistent block device paths like /dev/disk/by-foo/bar and
           fstab(5)-style specifiers like "FOO=bar" are supported.

           Added in version 217.

       resume_offset=
           Takes the page offset of the swap space from the resume device. Defaults to "0".

           Added in version 254.

       resumeflags=
           Takes the resume device mount options to use. Defaults rootflags= if not specified.

           Added in version 243.

       noresume
           Do not try to resume from hibernation. If this parameter is present, resume= is ignored.

           Added in version 240.

       systemd-hibernate-resume-generator - Unit generator for resume= kernel parameter

systemd(1), systemd-hibernate-resume.service(8), kernel-command-line(7)

systemd 257.7                                                              SYSTEMD-HIBERNATE-RESUME-GENERATOR(8)

/usr/lib/systemd/system-generators/systemd-hibernate-resume-generator