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| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2017-10-06 13:17:10 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-10-12 07:16:50 +0200 |
| commit | df8bbd0c98bef5bcf691709437c4102e9840b0f5 (patch) | |
| tree | 86b4d4e75a8d1f9f4a4578c57cab8288af4daca6 /arch/s390/include/asm/kprobes.h | |
| parent | s390: cleanup string ops prototypes (diff) | |
| download | linux-dev-df8bbd0c98bef5bcf691709437c4102e9840b0f5.tar.xz linux-dev-df8bbd0c98bef5bcf691709437c4102e9840b0f5.zip | |
s390/kprobes: remove KPROBE_SWAP_INST state
For an unknown reason the s390 kprobes instruction replacement
function modifies the kprobe_status of the current CPU to
KPROBE_SWAP_INST. This was supposed to catch traps that happened
during instruction patching. Such a fault is not supposed to happen,
and silently discarding such a fault is certainly also not what we
want. In fact s390 is the only architecture which has this odd piece
of code.
Just remove this and behave like all other architectures. This was
pointed out by Jens Remus.
Reported-by: Jens Remus <jremus@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/kprobes.h')
| -rw-r--r-- | arch/s390/include/asm/kprobes.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/s390/include/asm/kprobes.h b/arch/s390/include/asm/kprobes.h index 28792ef82c83..921391f2341e 100644 --- a/arch/s390/include/asm/kprobes.h +++ b/arch/s390/include/asm/kprobes.h @@ -63,8 +63,6 @@ typedef u16 kprobe_opcode_t; #define kretprobe_blacklist_size 0 -#define KPROBE_SWAP_INST 0x10 - /* Architecture specific copy of original instruction */ struct arch_specific_insn { /* copy of original instruction */ |