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Subject[PATCHv3 10/17] s390: expose number of page table levels
Date
We would want to use number of page table level to define mm_struct.
Let's expose it as CONFIG_PGTABLE_LEVELS.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
---
arch/s390/Kconfig | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 373cd5badf1c..f6aebcb7a0f8 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -155,6 +155,11 @@ config S390
config SCHED_OMIT_FRAME_POINTER
def_bool y

+config PGTABLE_LEVELS
+ int
+ default 4 if 64BIT
+ default 2
+
source "init/Kconfig"

source "kernel/Kconfig.freezer"
--
2.1.4


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