Bug 1540591 - redhat-rpm-config: Disable CET for i686
Summary: redhat-rpm-config: Disable CET for i686
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: redhat-rpm-config
Version: rawhide
Hardware: i686
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Florian Weimer
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Keywords:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-01-31 13:30 UTC by Florian Weimer
Modified: 2018-02-11 09:54 UTC (History)
9 users (show)

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Clone Of:
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Last Closed: 2018-02-11 09:54:16 UTC


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External Trackers
Tracker ID Priority Status Summary Last Updated
GNU Compiler Collection 84148 None None None 2018-01-31 13:30 UTC

Description Florian Weimer 2018-01-31 13:30:24 UTC
According to Intel, the CET NOPs are not treated as NOPs by older processors.  Depending on what “older” means in this context, we may have to disable it for i686 builds in Fedora.

Comment 1 Florian Weimer 2018-02-11 09:54:16 UTC
The x86 SIG did not find any issues with the change, so we left CET enabled for the mass rebuild:

https://lists.fedoraproject.org/archives/list/x86@lists.fedoraproject.org/thread/XP6FWTHQS5PEFOLYIPTJUOMDEVMS6M5S/


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