s390/boot: remove non-functioning image bootable check

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check_image_bootable() has been introduced with commit 627c9b6205
("s390/boot: block uncompressed vmlinux booting attempts") to make sure
that users don't try to boot uncompressed vmlinux ELF image in qemu. It
used to be possible quite some time ago. That commit prevented confusion
with uncompressed vmlinux image starting to boot and even printing
kernel messages until it crashed. Users might have tried to report the
problem without realizing they are doing something which was not intended.
Since commit f1d3c53237 ("s390/boot: move sclp early buffer from fixed
address in asm to C") check_image_bootable() doesn't function properly
anymore, as well as booting uncompressed vmlinux image in qemu doesn't
really produce any output and crashes. Moving forward it doesn't make
sense to fix check_image_bootable() anymore, so simply remove it.

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

...

This commit is contained in:

Vasily Gorbik 2023-02-15 14:27:45 +01:00 • committed by Heiko Carstens

parent a52e5cdbe8

commit 53fcc7dbf1

3 changed files with 0 additions and 17 deletions

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1

arch/s390/boot/startup.c

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2

arch/s390/include/asm/setup.h

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14

arch/s390/kernel/early.c

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