s390/checksum: provide and use cksm() inline assembly

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Convert those callers of csum_partial() to use the cksm instruction,
which are either very early or in critical paths, like panic/dump, so
they don't have to rely on a working kernel infrastructure, which will
be introduced with a subsequent patch.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

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This commit is contained in:

Heiko Carstens 2024-02-03 11:45:21 +01:00

parent 4ce69fcf17

commit 3a74f44de2

3 changed files with 20 additions and 16 deletions

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27

arch/s390/include/asm/checksum.h

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3

arch/s390/kernel/ipl.c

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6

arch/s390/kernel/os_info.c

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