[S390] maccess: arch specific probe_kernel_write() implementation

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Add an s390 specific probe_kernel_write() function which allows to
write to the kernel text segment even if write protection is enabled.
This is implemented using the lra (load real address) and stura (store
using real address) instructions.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Heiko Carstens 2009-06-12 10:26:42 +02:00 • committed by Martin Schwidefsky

parent d93f82b6e0

commit 88df125fd6

2 changed files with 62 additions and 1 deletions

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2

arch/s390/mm/Makefile

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61

arch/s390/mm/maccess.c

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