s390/boot: Improve decompression error reporting

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Currently, decompression error messages can be very uninformative:
[    0.029853] startup: read error
[    0.040507] startup:  -- System halted

Improve these messages to make it clear that the error originates from
the decompression code. Additionally, on decompression failures, if
bootdebug is enabled, dump the message ring buffer before halting. This
provides more context for diagnosing startup issues.

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

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Vasily Gorbik 2024-12-12 16:39:05 +01:00 • committed by Alexander Gordeev

parent ec6f9f7e5b

commit 9af310ef10

1 changed files with 11 additions and 1 deletions

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arch/s390/boot/decompressor.c

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