tree d7f1b61fbe822e71867bd04ee4ee7f3f1cd20842
parent ab14de6c37fae22911ba99f4171613e6d758050b
author Heiko Carstens <heiko.carstens@de.ibm.com> 1170706721 +0100
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1170706721 +0100

[S390] Mark kernel text section read-only.

Set read-only flag in the page table entries for the kernel image text
section. This will catch all instruction caused corruptions withing the
text section.
Instruction replacement via kprobes still works, since it bypasses now
dynamic address translation.

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