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Groups > linux.debian.bugs.dist > #874486

Bug#886822: linux: KPTI backport lacks pti-related flags in /proc/cpuinfo

From Apollon Oikonomopoulos <apoikos@debian.org>
Newsgroups linux.debian.bugs.dist, linux.debian.kernel
Subject Bug#886822: linux: KPTI backport lacks pti-related flags in /proc/cpuinfo
Date 2018-01-10 13:40 +0100
Message-ID <v6nPH-1V9-9@gated-at.bofh.it> (permalink)
References <v6lEd-gR-1@gated-at.bofh.it> <v6lEd-gR-1@gated-at.bofh.it>
Organization The Debian Project

Cross-posted to 2 groups.

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On 12:06 Wed 10 Jan     , Apollon Oikonomopoulos wrote:
> The backport of KPTI/KAISER to 4.9 and 3.16 lacks the pti CPU flag and 
> the cpu_insecure bug found in /proc/cpuinfo in 4.14. While this does 
> not affect core KPTI functionality, it makes it harder to determine 
> whether a system is running with pti enabled without examining kernel 
> logs.

Correcting myself:

The flag is there, but it's called "kaiser" and not "pti". This seems to 
be the same throughout upstream backports of the patchset.

Feel free to close this bug report if you wish!

Regards,
Apollon

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Bug#886822: linux: KPTI backport lacks pti-related flags in /proc/cpuinfo Apollon Oikonomopoulos <apoikos@debian.org> - 2018-01-10 11:20 +0100
  Bug#886822: linux: KPTI backport lacks pti-related flags in /proc/cpuinfo Apollon Oikonomopoulos <apoikos@debian.org> - 2018-01-10 13:40 +0100

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