643338 – sys-kernel/gentoo-sources-4.9.74, sys-kernel/gentoo-sources-4.4.109: Stabilize kernels with KPTI patches

Bug 643338 - sys-kernel/gentoo-sources-4.9.74, sys-kernel/gentoo-sources-4.4.109: Stabilize kernels with KPTI patches

Summary: sys-kernel/gentoo-sources-4.9.74, sys-kernel/gentoo-sources-4.4.109: Stabiliz...

Status:	RESOLVED DUPLICATE of bug 643352

Alias:	None

Product:	Gentoo Linux
Classification:	Unclassified
Component:	Keywording (show other bugs)
Hardware:	AMD64 Linux

Importance:	Normal normal (vote)
Assignee:	Gentoo Linux bug wranglers

URL:	https://www.theregister.co.uk/2018/01...
Whiteboard:
Keywords:

Depends on:
Blocks:

Reported:	2018-01-04 00:26 UTC by QIN Yuhao
Modified:	2018-01-04 15:33 UTC (History)
CC List:	1 user (show)

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Runtime testing required:	---

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Description QIN Yuhao 2018-01-04 00:26:12 UTC

There has been a critical design vulnerability in all Intel processors, which has recently caused all long-term Linux versions to apply the KPTI (formerly called KAISER) patch. It would fix such bug by totally separate kernel and user-mode pages, causing compilation performance to suffer from up to 30% penalty. The patch was applied to 4.14.11, 4.9.74 and 4.4.109. We should stabilize 4.9.74 and 4.4.109 and even mask those beforehand to ensure security of our systems.

Reproducible: Always

Comment 1 kuzetsa CatSwarm (kuza for short) 2018-01-04 00:46:13 UTC

https://bugs.gentoo.org/643228

Comment 2 kfm 2018-01-04 01:02:56 UTC

That would seem premature as 4.4.109 and 4.9.74 do not contain the necessary patches. They are accumulating in queue-4.4 and queue-4.9 at the time of writing.

Comment 3 kfm 2018-01-04 15:33:11 UTC


*** This bug has been marked as a duplicate of bug 643352 ***