“Unlike Kpatch and Ksplice, which patch the running kernel without rebooting, Live Update Orchestrator takes a hybrid approach. While it requires a reboot, it focuses on keep critical devices running, which minimizes the side effects of the update.”
Google is developing Live Update Orchestrator, a new system for updating the Linux kernel with minimal downtime.
This technology is focused on cloud environments, allowing hypervisors to be updated without completely interrupting running virtual machines.
Live Update is a specialized reboot process that keeps certain devices operational through kernel transitions.
A new device infrastructure (dev_liveupdate) is introduced to integrate with the Live Update Orchestrator system.
“For being able to force additional CPU security mitigations even if the processor indicates it’s not vulnerable to a given bug like Spectre, Meltdown, Retbleed, and others.”
Anki provides the option the self host your own sync server. It is an advanced feature for experienced users.
SYNC_USER1=user:pass anki –syncserver from the command line starts the sync server. If you use a firewall such as ufw you have to adjust the rules to allow IP addresses from 192.168.0.xxx or 192.168.1.xxx with:
ufw allow from 192.168.0.0/24
or
ufw allow from 192.128.1.0/24
Then you get a message like this, indicating a functioning sync server:
Anki starting… 2024-11-16T18:31:41.598515Z INFO listening addr=0.0.0.0:8080
In order to sync your Anki clients towards this server you have to set a URL link to the server’s IP address (in my case 192.168.1.195 => http://192.168.1.195:8080). The server listens to port 8080 as default.
Rejecting commits and removing developers based on nationality !!! What does even has nationality to do with open-source contributions !!? If the code is good, non-malicious and runs it should be accepted …
“Advanced Performance Extensions (Intel® APX) Intel® doubles the number of general-purpose registers (GPRs) from 16 to 32. This allows the compiler to keep more values in registers; as a result, APX-compiled code contains 10% fewer loads and more than 20% fewer stores than the same code compiled for an Intel® 64 baseline.”
The vulnerability affects xz packages prior to version 5.6.1-2 (specifically 5.6.0-1 and 5.6.1-1).
Andres Freund noticed odd symptoms around liblzma (part of the xz package) on Debian sid installations over the last weeks (logins with ssh taking a lot of CPU, valgrind errors) and concluded that the xz package has been backdoored.
The backdoor is present in the tarballs released upstream and contains the following line (originally not present in the source code):
After the update:
Running ldd (shared libraries utility) to ensure no linkage between openssh and liblzma.