s390/boot: Defer boot messages when earlyprintk is not enabled

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When earlyprintk is not specified, boot messages are only stored in a
ring buffer to be printed later by printk when console driver is
registered.

Critical messages from boot_emerg() are always printed immediately,
even without earlyprintk.

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>

...

This commit is contained in:

Vasily Gorbik 2024-11-20 21:46:17 +01:00 • committed by Alexander Gordeev

parent 847e5a4c71

commit c09f8d0ad6

4 changed files with 28 additions and 2 deletions

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2

arch/s390/boot/ipl_parm.c

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9

arch/s390/boot/printk.c

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1

arch/s390/include/asm/boot_data.h

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18

arch/s390/kernel/setup.c

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