s390/crash_dump: fix virtual vs physical address handling

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Signal processor STORE STATUS requires a physical address where register
contents are supposed to be written to, however the kernel must read the
data via the corresponding virtual address.

Also the allocated save_area, where register contents are copied to,
resides in virtual address space.

Fix this by using proper __pa() conversion, or correct memblock_alloc()
invocation.

Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

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This commit is contained in:

Heiko Carstens 2021-12-16 13:27:10 +01:00

parent 39d02827ed

commit a0e45d40d5

2 changed files with 8 additions and 12 deletions

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2

arch/s390/kernel/crash_dump.c

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18

arch/s390/kernel/smp.c

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