3redhat.com Technology overview What’s new in Red Hat Enterprise Linux 7
HARDWARE EVENT REPORTING MECHANISM
Red Hat Enterprise Linux 7 beta unies hardware event reporting into a single reporting mechanism.
Instead of various tools collecting errors from different sources with different timestamps, a new
hardware event reporting mechanism (HERM) will make it easier to correlate events and get an
accurate picture of system behavior. HERM reports events in a single location and in a sequential
timeline. HERM uses a new userspace daemon, rasdaemon, to catch and log all RAS events coming
from the kernel tracing infrastructure.
VIrtuaLIzatIon
GUEST INTEGRATION WITH VMWARE
Red Hat Enterprise Linux 7 beta advances the level of integration between the Red Hat
Enterprise Linux guest and VMware vSphere. Integration now includes:
•Open VM Tools.
•3D graphics drivers for hardware-accelerated OpenGL and X11 rendering.
•Fast communication mechanisms between VMware ESX and the virtual machine.
Combined, these additions provide a rich, high-performance environment for the Red Hat
Enterprise Linux virtual machine running on VMware.
CRYPTOGRAPHY SUPPORT
KVM-based virtualization capabilities meet new cryptographic security requirements from both US
and UK governments by adding the ability for the virtual machine to draw entropy from the host. By
default, this information is sourced from the host’s /dev/random le, but hardware random number
generators available on hosts can be used as the source as well.
By alleviating entropy starvation in guests, cryptographic applications running on the guest are
more effective. This feature is especially important to highly security-conscious customers such
as federal governments, online merchants, nancial institutions, and defense contractors.
VIRTUAL FUNCTION I/O DEVICE ASSIGNMENT
The virtual function I/O (VFIO) userspace driver interface improves PCI device assignment for KVM.
VFIO provides kernel-level enforcement of device isolation, improves security of device access, and
is compatible with features such as secure boot. For example, Red Hat Enterprise Linux 7 beta uses
the VFIO framework for graphic processing unit (GPU) device assignment. Note that VFIO replaces
the KVM device assignment mechanism used in Red Hat Enterprise Linux 6.
deVeLoPment
OPENJDK
Red Hat Enterprise Linux 7 beta includes OpenJDK 7 as the default Java
TM
development and runtime
environment. OpenJDK 7 is the most current stable version of publicly available Java. It provides
more stability, better performance, better support for dynamic languages, and quicker startup times.
All Java 7 packages (java-1.7.0-openjdk, java-1.7.0-oracle, java-1.7.0-ibm) in Red Hat Enterprise Linux
7 beta let you install multiple versions in parallel, similarly to the kernel. Parallel installation makes it
simpler to try out multiple versions of the same JDK simultaneously in order to to tune performance
and debug problems if needed.
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