-# N.B. Hardening sysctls:
-# kernel.kptr_restrict=2 (or 1?)
-# kernel.dmesg_restrict=1 (also see the kconfig option)
-# kernel.perf_event_paranoid=2 (or 3 with a custom patch, see https://lwn.net/Articles/696216/)
-# kernel.kexec_load_disabled=1
-# kernel.yama.ptrace_scope=3
-# user.max_user_namespaces=0 (for Debian, also see kernel.unprivileged_userns_clone)
-# what about bpf_jit_enable?
-# kernel.unprivileged_bpf_disabled=1
-# net.core.bpf_jit_harden=2
-# vm.unprivileged_userfaultfd=0
-# (at first, it disabled unprivileged userfaultfd,
-# and since v5.11 it enables unprivileged userfaultfd for user-mode only)
-# vm.mmap_min_addr has a good value
-# dev.tty.ldisc_autoload=0
-# fs.protected_symlinks=1
-# fs.protected_hardlinks=1
-# fs.protected_fifos=2
-# fs.protected_regular=2
-# fs.suid_dumpable=0
-# kernel.modules_disabled=1
-# kernel.randomize_va_space=2
-# nosmt sysfs control file
-# dev.tty.legacy_tiocsti=0
-# vm.mmap_rnd_bits=max (?)
-# kernel.sysrq=0
-# abi.vsyscall32 (any value except 2)
-# kernel.oops_limit (think about a proper value)
-# kernel.warn_limit (think about a proper value)
-#
-# Think of these boot params:
-# module.sig_enforce=1
-# lockdown=confidentiality
-# mce=0
-# nosmt=force
-# intel_iommu=on
-# amd_iommu=on
-# efi=disable_early_pci_dma
-# cfi=
-