s390/boot: change initial program check handler to disabled wait psw

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The program check handler of the kernel image points to
startup_pgm_check_handler. However an early program check which happens
while loading the kernel image will jump to potentially random code, since
the code of the program check handler is not yet loaded; leading to a
program check loop.

Therefore initialize it to a disabled wait psw and let the startup code set
the proper psw when everything is in memory.

Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

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Heiko Carstens 2022-04-24 15:52:01 +02:00

parent 734757976e

commit 84f4e1dfb2

1 changed files with 1 additions and 1 deletions

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arch/s390/boot/head.S

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