Unrevert "arm64: Use firmware to detect CPUs that are not affected by Spectre-v2"
Bug #1854207 reported by
dann frazier
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Bionic |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
We reverted a couple changes in 4.15.0-72.81 because they were causing a regression (bug 1853326) that was not understood at press time:
b042ff6848684 Revert "arm64: Get rid of __smccc_
5f395b984282e Revert "arm64: Use firmware to detect CPUs that are not affected by Spectre-v2"
This bug is to track the reapplication of these patches, once we've figured out the underlying issue.
Update: The regression was believed to actually be caused by bug 1853485, which has now been addressed.
CVE References
Changed in linux (Ubuntu): | |
status: | Incomplete → Confirmed |
Changed in linux (Ubuntu Bionic): | |
status: | Incomplete → Confirmed |
Changed in linux (Ubuntu Bionic): | |
status: | Confirmed → Fix Committed |
Changed in linux (Ubuntu): | |
status: | Confirmed → Invalid |
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This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1854207
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.