s390/smp: Handle restart interrupt on ipl cpu

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The current smp code allows to trigger a restart interrupt on CPUs
offline in linux. To allow using the percpu infrastructure instead
of the pcpu_devices array, switch to the ipl cpu which is always
online before calling do_restart().

Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

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Sven Schnelle 2024-07-16 09:26:13 +02:00 • committed by Vasily Gorbik

parent b798b685b4

commit a795eeaf85

3 changed files with 1 additions and 17 deletions

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1

arch/s390/include/asm/smp.h

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2

arch/s390/kernel/ipl.c

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15

arch/s390/kernel/smp.c

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