aboutsummaryrefslogtreecommitdiffstats
path: root/arch/s390/kernel/early.c
diff options
context:
space:
mode:
authorHeiko Carstens <heiko.carstens@de.ibm.com>2007-02-05 15:18:41 -0500
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-02-05 15:18:41 -0500
commit162e006ef59266b9ebf34e3d15ca1f3d9ee956d7 (patch)
treed7f1b61fbe822e71867bd04ee4ee7f3f1cd20842 /arch/s390/kernel/early.c
parentab14de6c37fae22911ba99f4171613e6d758050b (diff)
[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>
Diffstat (limited to 'arch/s390/kernel/early.c')
-rw-r--r--arch/s390/kernel/early.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 40dd47970a33..e518dd53eff5 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -27,7 +27,6 @@
27#define DEFSYS_CMD_SIZE 96 27#define DEFSYS_CMD_SIZE 96
28#define SAVESYS_CMD_SIZE 32 28#define SAVESYS_CMD_SIZE 32
29 29
30extern int _eshared;
31char kernel_nss_name[NSS_NAME_SIZE + 1]; 30char kernel_nss_name[NSS_NAME_SIZE + 1];
32 31
33#ifdef CONFIG_SHARED_KERNEL 32#ifdef CONFIG_SHARED_KERNEL