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udev: Introduce a rule to set newly hotplugged CPUs online

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On s390 architecture a newly hotplugged CPU, should only stay offline if
it is on deconfigured state, otherwise it should automatically become
online. Introduce a new udev rule to enforce this behavior. This rule
should always be installed.

Acked-by: Jan Höppner <hoeppner@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Mete Durlu <meted@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
This commit is contained in:
Mete Durlu
2025-06-03 11:42:26 +02:00
committed by Steffen Eiden
parent f07504d92e
commit 8dc06d14d7
1 changed files with 4 additions and 0 deletions
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4
etc/udev/rules.d/80-hotplug-cpu.rules Normal file
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#
# Rules to set online a newly hotplugged cpu on s390x
#
SUBSYSTEM=="cpu", ACTION=="add", CONST{arch}=="s390*", ATTR{configure}=="1", TEST=="online", ATTR{online}!="1", ATTR{online}="1"