Kernel
The following kernel features are available as technology previews.
kexec
Fast Reboot
The kexec fast reboot feature is available as a technology preview
feature in Oracle Linux 8. This feature significantly speeds up the boot process by enabling
the kernel to boot directly into the second kernel without first passing through the Basic
Input/Output System (BIOS). To use this feature, load the kexec
module first,
then reboot the system.
SGX Available
Software Guard Extensions (SGX) from Intel® protects software code and data from disclosure and modification. The Linux kernel partially supports SGX v1 and SGX v1.5. Version 1 enables platofmrs by using the Flexible Launch Control mechanism to use the SGX technology.
Extended Berkeley Packet Filter (eBPF)
eBPF
is an in-kernel virtual machine code is processed in the kernel space,
in the restricted sandbox environment with access to a limited set of
functions.
eBPF
has a new system call bpf()
for creating various types
of maps and for loading programs that can be attached onto various points (sockets,
tracepoints, packet reception) to receive and process data.
An eBPF
component is AF_XDP
, a socket for
connecting the eXpress Data Path (XDP) path to user space for
applications that prioritize packet processing performance.