** Changed in: linux (Ubuntu Xenial)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1744736
Title:
Ubuntu 16.04 - s390/cpuinfo: show facilities as reported by stfle
Status in Ubuntu on IBM z Systems:
In Progress
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Xenial:
Fix Committed
Bug description:
== SRU Justification ==
IBM is requesting these two commits in Xenial, which are already
in Artful and Bionic. These commits allow identifying the microcode level
[MCL] of a [Z] system, hence let's one [IBM] know if the level includes
mitigation for Spectre or not.
Both commits are in mailine as of v4.12-rc1.
== Fixes ==
09214545c4a4 ("s390/bitops: add for_each_set_bit_inv helper")
157467ba9fb7 ("s390/cpuinfo: show facilities as reported by stfle")
== Regression Potential ==
Low. These fixes are specific to s390.
== Original Bug Description ==
Please backport this upstream commit:
commit 157467ba9fb7e379f0540707dd89111de441e45e
Author: Heiko Carstens <heiko.carst...@de.ibm.com>
Date: Sat Feb 25 12:16:48 2017 +0100
s390/cpuinfo: show facilities as reported by stfle
Add a new line to /proc/cpuinfo which shows all available facilities
as reported by the stfle instruction:
> cat /proc/cpuinfo
...
facilities : 0 1 2 3 4 6 7 ...
...
As pre-req, also apply commit 9194bc62e6314f4d8cef60e80070ca2bb4182e99
Author: Heiko Carstens <heiko.carst...@de.ibm.com>
Date: Sat Feb 25 12:16:31 2017 +0100
s390/bitops: add for_each_set_bit_inv helper
Same helper function like for_each_set_bit in generic code.
which introduces for_each_set_bit_inv() that is used to process the
facilities bits.
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