![]() The Libdnf and Hawkey APIs (both C and Python) are unstable, and will likely change during Red Hat Enterprise Linux 8 life cycle.įor more details on changes of YUM packages and tools availability, see Considerations in adopting RHEL 8. The DNF Python API is available at DNF API Reference. Users are advised to migrate their plug-ins and scripts to the new API provided by YUM v4 (DNF Python API), which is stable and fully supported. Note that the legacy Python API provided by YUM v3 is no longer available. They also provide compatibility symlinks, so the binaries, configuration files and directories can be found in usual locations. Selected yum plug-ins and utilities have been ported to the new DNF back end, and can be installed under the same names as in RHEL 7. YUM v4 is compatible with YUM v3 when using from the command line, editing or creating configuration files.įor installing software, you can use the yum command and its particular options in the same way as on RHEL 7. Well-designed stable API for integration with toolingįor detailed information about differences between the new YUM v4 tool and the previous version YUM v3 from RHEL 7, see Changes in DNF CLI compared to YUM. Retpoline: A Branch Target Injection Mitigation - White Paper "6th generation Intel Core Processors and its close derivatives" are what the Intel’s Retpolines document refers to as "Skylake-generation". See How to determine which modules are responsible for spectre_v2 returning "Vulnerable: Retpoline with unsafe module(s)"? for further information. If one or more kernel modules were not built with the Retpoline support, the /sys/devices/system/cpu/vulnerabilities/spectre_v2 file will indicate vulnerability and the /var/log/messages file will identify the offending modules. This document also states that the risk of an attack is low.įor use cases where complete Spectre V2 mitigation is desired, a user can select IBRS through the kernel boot line by adding the spectre_v2=ibrs flag. Intel’s Retpoline document describes any cases of exposure. However, note that using Retpolines in some cases may not fully mitigate Spectre V2. Red Hat has implemented this change as a result of Intel’s recommendations to align with the defaults used in the Linux community and to restore lost performance. ![]() The default mitigation for the Spectre V2 vulnerability (CVE-2017-5715) for systems with the 6th Generation Intel Core Processors and its close derivatives has changed from Indirect Branch Restricted Speculation (IBRS) to Retpolines in Red Hat Enterprise Linux 8. Spectre V2 mitigation default changed from IBRS to Retpolines Notable changes to internationalization in RHEL 8 Red Hat Enterprise Linux 8 International Languagesħ.2. Dynamic programming languages, web and database serversĬollapse section "7. ![]() Deprecated functionality"Ĭollapse section "5.4. Red Hat Enterprise Linux System RolesĮxpand section "5.4. Technology previews"Ĭollapse section "5.3. Dynamic programming languages, web and database serversĮxpand section "5.3. Distribution of content in RHEL 8"Ĭollapse section "3. Providing feedback on Red Hat documentationĮxpand section "3. ![]()
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