s390/boot: Convert __diag260() to extable

Shorten __diag260() and use regular EX_TABLE program check handling.

Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2025-02-24 15:59:07 +01:00 • committed by Vasily Gorbik
commit 0b4bf776f3