RedHawk 7.5.12 is now available for x86_64.

• Added support for a fast FBS deadline lookup of the current process

RedHawk Linux 8.4.5 is now available for the NVIDIA Jetson AGX Orin platform.

• Initial release of RedHawk 8.4.5 on this platform
• Requires NVIDIA JetPack 5.1 Rev. 1 with L4T 35.2.1
• This release runs on Ubuntu 20.04

RedHawk Linux 8.4.5 is now available for x86_64 systems running RHEL 8.4, Rocky 8.4 or Ubuntu 20.04.

Key changes in this incremental release include:

• Imported changes from kernel.org 5.10.165-rt81
• Added support for non-zero PCI domains in the PCI BAR file system
• Added support for Jetson platforms to the gather utility
• Fixed miscellaneous bugs in the gather utility

RedHawk Linux 7.5.11 is now available for x86_64 systems running RHEL/CentOS 7.5 or Ubuntu 16.04.

Key changes in this incremental release include:

• Fixed use of an uninitialized variable 'timersoft_temp' when booting PRT kernels
• Adjusted locking order in worker_idle_timer_remove_workers to avoid a potential circular lock
• Added MSI-X support to RCIM IV
• Fixed a bug in RCIM IV IRIG leap year mask

RedHawk Linux 8.4.4 is now available for x86_64 systems running RHEL 8.4, Rocky 8.4 or Ubuntu 20.04.

Key changes in this incremental release include:

• Imported changes from kernel.org 5.10.152-rt75
• Fixed an RCIM IV IRIG leap second bug
• Improved RCIM IV backward compatibility configuration processing
• Updated example driver code to be compatible with the latest kernels

A significant kernel bug dealing with pthread mutexes has been discovered in the following kernel.org kernels:

• version 4.4.255.262-rt219 (aka 4.4.262-rt219)
• version 4.4.255.267-rt221 (aka 4.4.267-rt221)

The bug affects RedHawk 7.3.14 and 7.3.15.

Those releases have been removed from redhawk.concurrent-rt.com, although the (now empty) repositories still exist so as not to impact customers with those definitions when running yum or apt.

If you are running one of those releases, please upgrade to 7.3.18 or to a newer major release:

• RedHawk 8.4
• RedHawk 8.2
• RedHawk 8.0
• RedHawk 7.5

You can find the original product ISOs for major releases as well as updates in My Software.

Please consult the release notes for such releases before installation. You can find the release notes in the Documentation Library.

For aid in upgrading please contact Customer Support.

RedHawk Linux 7.5.10 is now available for x86_64 systems running RHEL 7.5, CentOS 7.5 or Ubuntu 16.04.

Key changes in this incremental release include:

• Fixed CONFIG_LOCKDEP misuse of transport_lock spinlock in SUNRPC
• Imported kernel.org 4.9.327-rt19

On November 28th, 2022, the gpg key used to sign Ubuntu-based repositories from Concurrent Real-Time expired.

All of our Ubuntu-based product repositories have been resigned with a new key file.

To resolve this problem on your systems that have repository definitions for such repos, you must add the new key file to your apt keyring.

Execute the following commands as the root user:

wget https://redhawk.concurrent-rt.com/network/ccur-public-keys

apt-key add ccur-public-keys

On recent versions of Ubuntu, you may see a warning generated by apt-key or apt-get that says something similar to:

Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).

The warning can be ignored. Concurrent Real-Time will provide a different mechanism in the future.

If you wish to check the authenticity of the public key file mentioned above, request the key fingerprint from Concurrent Real-Time Support and compare them to the fingerprint of the file you downloaded. You can obtain the fingeprint of the downloaded file via:

gpg --with-fingerprint ccur-public-keys

Architect 8.4 Update 2 is now available for x86_64 systems running RHEL 8.4 or Rocky 8.4

Key changes in this incremental release include:

• Updated ARCHITECT_RHEL_NEXT feature to use RHEL 8.6.
• Added a few command-line tools for building and deploying images without GUI.
• Created an updated optical media installer to support Blu-ray devices.
• Allow for re-export of a VM disk image to Virtual Machine Manager (and/or KVM-RT) by offering to replace the existing VM.

RedHawk Linux 8.4.3 is now available for x86_64 systems running RHEL 8.4, Rocky 8.4, or Ubuntu 20.04.

Key changes in this incremental release include:

• Adjusted /proc/cpuinfo to avoid sending an IPI to shielded CPUs. This IPI was used to create a ever-changing display of MHz. That display is now static for shielded CPUs.
• Imported kernel.org 5.10.131-rt72

Please update to the newest polkit package as soon as possible. Security vulnerability exists on the following distributions:

• Rocky 8
• Red Hat Enterprise Linux 6
• Red Hat Enterprise Linux 7
• Red Hat Enterprise Linux 8
• Red Hat Virtualization 4

Key changes in the RedHawk 7.5.8 incremental release include:

• Turned on CAN driver support in all kernels
• Imported kernel.org 4.9.319-rt195
• Fixed two bugs in the kernel utility /usr/src/*RedHawk*/scripts/faddr2line

RedHawk Linux 8.4.2 is now available for x86_64 systems running RHEL 8.4, Rocky 8.4, or Ubuntu 20.04.

Key changes in this incremental release include:

• Imported kernel.org 5.10.115-rt67.
• Updated crash utility to version 8.0.1.
• Updated strace utility to version 5.17.
• Brought back the software only PTP daemon.
• Improved RCIM IRIG documentation.
• Includes optional PRT kernels.

The latest driver for Concurrent Real-Time's PCIe 64-channel SAR Analog Input card is now available:

• Added the new Clone support
• Increased the size of the Physical Memory Table
• Provided support for RedHawk 8.4 for Rocky 8.4 and Ubuntu 20.04
• Ensures that Run Level does not overwrite Base Level
• Enhanced ValidateFileHeader() to allow for bad board types
• Fail MsgDma when writing to FIFO read address
• When Reload Firward icotl is called wihtout arg, get Run Level information from currently loaded firmware
• Added the "-x" option to create a license only file in ccrtaicc_label file
• Added support for license only file (*.liconly)
• Fixed some bugs in tests
• Enhanced some tests
• For additional information about changes in this release, see the changelog for the ccrtaicc_RedHawk_driver_r2022.1.0-20220131.noarch.rpm on the ISO or after installation (e.g. rpm -qp --changelog ccuraicc*.rpm or rpm -q --changelog ccuraicc_RedHawk_driver, respectively)

The latest wave form generator for Concurrent Real-Time's PCIe 32-channel Digital to Analog Converter card is now available

Key changes in this incremental release include:

• Added support for the CCURAOCC driver release 2022.5.0
• Added support for RedHawk kernel versions up to RH 8.4
• Makefile changed -- "make purge" should only be allowed if source directory exists
• Removed compiler warnings for strncpy() calls
• Reordered LIB_OPS as it is failing on Ubuntu
• Added two new options '-l' and '-s' in aocc_stream test
• Added 'load:' key in Makefile
• Compiled static libraries with -fPIC otherwise errors occur compiling tests under RH8.x DEB

RedHawk Architect ASE 8.4-1 is also available.

Key changes in the RedHawk Architect 8.4-1 release include:

• Added an option to create secure (encrypted) installation images
• Passwords stored in session files are now hashed
• Added the ability to create "RedHawk 8.4 on RHEL 8.5" target images with the ARCHITECT_RHEL_NEXT environment variable
• Added an option on the Chroot Shell page to mount, configure, and enable media ISO DNF repositories inside the chroot shell
• Added a search feature to the Systemd services page
• Made various GUI improvements and bug fixes
• For more information see the RedHawk Architect 8.4-1 Release Notes.

RedHawk 8.4 now supports Mellanox Open Fabric Enterprise Distribution (OFED) version 5.6-1.0.3.3

For more information see the RedHawk 8.4 OFED Release Notes.

Key changes in the RedHawk 7.5.8 incremental release include:

• Imported kernel.org 4.9.312-rt193
• Migrate a per-node kcompactd daemon off the node when all cpus of that node become ltmr shielded, and migrate back when some cpu on that node again becomes available
• Numa balancing: Backport mainline Linux's removal of zone ordering (substitute in Node Ordering in its place)
• RCIM: added 'external clock input' to the RCIM configuration file
• RCIM: removed broken 'cyclone_irq' boot time paramater; use 'nomsix' instead to get its intended functionality
• FBS: fixed 'sleeping while atomic' bug; occurs when SELinux feature is enabled
• Disallow unprivileged eBPF programs by default. This works around a Spectre v2 security issue

Key changes in the RedHawk 7.3.18 incremental release include:

• Added support for RCIM IV
• Added RCIM GPS support for Chronyd
• Fixed a bug in FBS where check_perms() may be called from sleepable context when SELinux is enabled

RedHawk Architect 8.4 is now available for x86_64 systems running RHEL 8.4, CentOS 8.4 and Rocky 8.4.

Key changes in this incremental release include:

• Added support for RHEL, CentOS and Rocky 8.4 hosts
• Added support to build RedHawk 8.4 target images
• Refined RedHawk 8.2 target images to be RedHawk 8.2.2 (8.2 REV2)
• Added software RAID configuration
• Made various improvements and bug fixes to the GUI.
• See the Release Notes for more information

RedHawk Linux 8.4.1 is now available for x86_64 systems running RHEL 8.4, Rocky 8.4, or Ubuntu 20.04.

Key changes in this incremental release include:

• Added RCIM IV MSI-X Support
• Added CONFIG_ARCHITECT, and set it to =y. This option auto-sets the other config options the Architect tools needs for its correct operation.
• Added CONFIG_KVMRT, and set it to =y. This option forces other config options to the values needed for KVM-RT to operate properly.
• Backported a VMD driver fix from 5.15-linux, allowing Dell computers with VMD hardware to boot.
• Fixed several compiler warnings in the nvidia-470.74 driver. This shows up only when building custom kernels.
• Renamed 'mclock_in' to 'ext_clock_in' in /proc/driver/rcim/config.
• Added multi-vector support to the RCIM driver. This feature is available only on select RCIM-IV boards.
• Fixed a bug in sched_setaffinity(2) where an illegal affinity mask would be accepted even as the services returned EINVAL to indicate it was bad.
• Fixed the 'inconsistent lock state' bug in the i915 driver -- PRT kernels only.
• Fixed the 'sleeping while atomic' bug in fbscycle(3) -- PRT kernels only.
• Applied the security fix for CVE-2022-0847 'dirty pipe' exploit.

NightStar now supports RedHawk Linux 8.4

Supported OS distributions include the following:

• RHEL 7.5-8.4
• CentOS 7.5-8.4
• Rocky 8.4
• Ubuntu 16.04-20.04

Online software repositories (version 5.0) have been updated with the latest packages. A new version of the Product Intallation DVD, 5.0-1n, has been released with the latest packages.

RedHawk Linux 8.4 is now available for x86_64 systems.

Key features include:

• Based on kernel.org 5.10
• Support of CentOS, RHEL, and Rocky 8.4
• Support of Ubuntu 20.04
• Support of x86_64 programs
• Support of i386 programs executing on an x86_64 system
• See the Release Notes for more information

RedHawk Linux 7.3.17 is now available for x86_64 systems.

The following changes are included:

• Restore historical behavior by allowing RCIM_CLOCK_SYNCHRONIZE to be applied to /dev/rcim/sclk as well as to /dev/rcim/rcim.

RedHawk Linux 7.0.5 is now available for x86_64 systems.

The following changes are included:

• Adjust the kernel's masterclock algorithm so that it works properly with clock frequency adjustments up to 100,000 ppm. Prior to this it could handle frequency adjustments of a few thousand ppm. This primarily affects systems with an RCIM card, and using chronyd(8) in its default configuration
• The RCIM rtc emulation driver was shutting down the device on intermediate closes which was incorrect, it must do so only on final close
• Support new Cyclone-based RCIM-III card
• Support RCIM-IV with IRIG

RedHawk KVM-RT 1.3 is now available for x86_64 systems.

The following operating systems are supported:

• RedHawk 7.5, 8.0, and 8.2 on CentOS/RHEL-based systems of the same version
• RedHawk 7.5, 8.0, and 8.2 on Ubuntu 16.04, 18.04 and 20.04, respectively
• Also supports RedHawk 8.4 which will be available by the end of the calendar year

Read the KVM-RT 1.3 Release notes and the latest copy of the User's Guide, both avaiable at redhawk.concurrent-rt.com/docs

RedHawk Linux 8.2.3 is now available for x86_64 systems running CentOS/RHEL 8.2 and Ubuntu 20.04

Changes include the following:

Make sure per-numa-node kcompactd daemons migrate off of shielded CPUs when all CPUs of a node become shielded

Systemd turbo service to enable/disable Turbo Boost

Fix bug in IRQ handler for RCIM III and RCIM IV

Add RCIM-IV IRIG master support

Add RCIM-IV masterclock input support

Updated RCIM User's Guide with IRIG chapter

Update NVIDIA driver from v460.80 to v470.63.01

Enable CAN and PEAK-System PCIe FD kernel support

RedHawk Linux 7.3.16 is now available for x86_64 systems running CentOS/RHEL 7.3 and Ubuntu 16.04.

Changes include the following:

• Revert imports back to 4.4.262-rt219 (futexes are not stable in newer 4.4-linux kernels). All users of 7.3.14 or 7.3.15-Redhawk should upgrade immediately to 7.3.16-RedHawk

RedHawk 7.5.7 is now available for x86_64 systems running CentOS 7, RHEL 7, and Ubuntu 16.04.

Changes include the following:

• By default, turn off auto-affinity management of IRQs across-the-board, unless specifically enabled (grub option 'enable_managed_irq')
• RCIM: Fix logging of spurious 'PLX cleared' messages
• Introduce LinuxPPS support to the RCIM driver
• Import 4.9.236-rt154
• Import 4.9.255-rt170
• Import 4.9.263-rt177
• Rename kernel from 4.9.263-rt177 to 4.9.255.263-rt177. This is to support tools that cannot handle a sublevel code >255
• Add msi_affinity_mask=CPUSET. Limit the number of MSI(X) IRQ vectors to a max_len(CPUSET)

RedHawk Linux 8.2.2 is now available for x86_64 systems running CentOS/RHEL 8.2 and Ubuntu 20.04

Changes include the following:

Fix 'weak-modules' error message that sometimes occured on kernel rom uninstall. This error was not only annoying, but its occurance terminated the uninstall process early

Upgrade OpenOnload kernel components from 7.1.0.265 to 7.1.1.75

[ prt only ] do not share unused cpu time allotments, as created by /proc/sys/kernel/sched_rt_runtime_us, between cpus. Backport from 5.10-linux

Import 5.4.109-rt56

Adjust copyright statements in Concurrent-written kernel source files

Add pci=minvecs boot command line option

Fix (rare) memory leak in /proc/irq/*/managed

Add basic RCIM-IV IRIG slave support to the RCIM driver

Speed up RCIM-IV and RCIM-IIIb interrupt processing

Make IRQ threading daemons by default run on the same CPU as their corresponding IRQs

RedHawk Linux 7.3.15 is now available for x86_64 systems running CentOS/RHEL 7.3 and Ubuntu 16.04.

Changes include the following:

• Import 4.4.267-rt221
• Adjust Concurrent's copyright declaration in various kernel source files

RedHawk Architect 8.2 is now available for x86_64 systems running CentOS/RHEL 8.0-8.2 and Fedora 30-32.

Changes include the following:

• Support for the logical volume manager (LVM) so that target file systems can be configured to use LVM
• Linux Unified Key Setup (LUKS2) support for block-device level encryption
• Federal Information Processing Standards (FIPS) support for target kernels
• Feature to synchronize target system images with already deployed target
• SELinux (ASE not required) interactive installer for disk selection at install time

RedHawk 7.5.4 Gold for the Jetson TX2 is now available for host systems running Ubuntu 16.04 or 18.04.

Changes include the following:

• Port Jetson 4.6 L4T version R32.5.1 for all Jetsons
• Fixed WARNING: in Tegra BL Debug code
• Reduce PDL issues in selinux
• Add new 'workqueue.shield.nomigration' boot parameter
• Add support for shield(1) to atomically add to or subtract cpus from the list of shielded cpus

RedHawk Linux 8.2.1 is now available for x86_64 systems running CentOS/RHEL 8.2 and Ubuntu 20.04

Changes include the following:

Add rescheduling_variable support when X86_SMAP is enabled

Fix RCIM III interrupts on AMD Opteron motherboards configured with Interrupt Remapping

Add core support for RCIM IV

Correct /proc/loadavg tracking for shielded cpus

Fix error in irq affinity mask setup under shielding for managed interrupts

Disable ability of RedHawk kernels to invoke UEFI runtime services (such invocations violate real-time parameters)

Import 5.4.93-rt51

Make CONFIG_KALLSYMS_ALL=y for all variants of our kernel, not just the debug kernel (OpenOnload support)

Make CONFIG_CRYPTO_OFB=y for all variants of our kernel (FIPS support)

Disable weak modules support, preventing RedHawk from loading modules from other kernels

Fix esoteric recursion deadlock between jrcu and ftrace in debug kernels while ftrace is in use

Correct cause of "Unlikely PLX interrupt cleared" warning

RedHawk Linux 7.3.14 is now available for x86_64 systems running CentOS/RHEL 7.3 and Ubuntu 16.04

Changes include the following:

Fix loadaverage bug for local timer shielded cpus (they were failing to update their load average in /proc/loadavg)

Improve crash(8) and OpenOnload(1) support by making CONFIG_KALLSYMS_ALL=y for all kernels, not just some of them

Import 4.4.256-rt214

Import 4.4.262-rt219

Change revision from 4.4.262 to 4.4.255.262, to work around <256 limit in the SUBLEVEL field various userspace tools have (eg, crashdump)

RedHawk KVM-RT 1.2 is now available for x86_64 systems running RedHawk 7.0 - 8.2 on CentOS and RedHawk 7.3 - 8.2 on Ubuntu.

Please see the RedHawk KVM-RT Release Notes v 1.2 for more information.