Bug 2098492
| Summary: | Avoidable contribution to e-waste | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 9 | Reporter: | fedora-info |
| Component: | kernel | Assignee: | Red Hat Kernel Manager <kernel-mgr> |
| kernel sub component: | Other | QA Contact: | Red Hat Kernel QE team <kernel-qe> |
| Status: | CLOSED NOTABUG | Docs Contact: | |
| Severity: | medium | ||
| Priority: | unspecified | CC: | aquini, codonell, darcari, fweimer, jstancek |
| Version: | 9.0 | ||
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2023-07-17 21:41:46 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
(In reply to fedora-info from comment #0) > Thus RH can potentially avoid significant e-waste by moving the RHEL9 CPU > cutoff point such that Core 2 (Duo) is supported. Waste was indeed a concern, but an additional concern was the power efficiency of these older systems. Red Hat worked with the industry to define specific ISA support levels and used x86-64-v2 as the baseline for RHEL 9 and CentOS 9. Modern systems can be significantly more power efficient, and old systems can be recycled. Florian Weimer discusses some of details in this blog post in 2021: https://developers.redhat.com/blog/2021/01/05/building-red-hat-enterprise-linux-9-for-the-x86-64-v2-microarchitecture-level The use of x86-64-v2 does deprecate some older x86_64 hardware. |
Description of problem: Get kernel panic when attempting to install EL9.0 on a machine with an Intel Core 2 Duo CPU. Version-Release number of selected component (if applicable): Kernel in initial 9.0 release How reproducible: Always. Steps to Reproduce: 1. Try to intstall on Core 2 (Duo) machine Actual results: Kernel panic a few seconds after starting boot of install process. Expected results: No kernel panic. Additional info: RH announced that RHEL9 does not support 'old CPUs', and the cutoff point appears to be somewhere between Core 2 (Duo) and Core i5. Core 2 (Duo) is more than adequate to run common workloads efficiently for many more years ('many' as in 1,2,3,many). Aided by inexpensive upgrades such as SSD and RAM. We have researched Core 2 (Duo) and found that it was a significant jump in capability from what preceded it. Evidence indicates there's a lot of Core 2 Duo machines still in use, and many workloads will benefit from the software versions provided by RHEL9 (compared with earlier RHEL versions). Thus RH can potentially avoid significant e-waste by moving the RHEL9 CPU cutoff point such that Core 2 (Duo) is supported.