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| author | Heiko Carstens <hca@linux.ibm.com> | 2020-11-16 08:06:41 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2020-11-23 12:01:12 +0100 |
| commit | 062e527956d05fae02f143c0d5ff9e8525c6799f (patch) | |
| tree | 8e070371d94d41cd6f6eb7eeb8801442ad73bdf2 /arch/s390/Kconfig.debug | |
| parent | 0290c9e328e04052e317171953feb18177a34aed (diff) | |
s390/mm: add debug user asce support
Verify on exit to user space that always
- the primary ASCE (cr1) is set to kernel ASCE
- the secondary ASCE (cr7) is set to user ASCE
If this is not the case: panic since something went terribly wrong.
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/Kconfig.debug')
| -rw-r--r-- | arch/s390/Kconfig.debug | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/s390/Kconfig.debug b/arch/s390/Kconfig.debug index ab48b694ade8..6bfaceebbbc0 100644 --- a/arch/s390/Kconfig.debug +++ b/arch/s390/Kconfig.debug @@ -5,3 +5,11 @@ config TRACE_IRQFLAGS_SUPPORT config EARLY_PRINTK def_bool y + +config DEBUG_USER_ASCE + bool "Debug User ASCE" + help + Check on exit to user space that address space control + elements are setup correctly. + + If unsure, say N. |