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authorHeiko Carstens <heiko.carstens@de.ibm.com>2017-03-27 15:36:20 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2017-03-28 16:55:10 +0200
commitb8402b957d6792f80282fa76e9932ff77a6f0554 (patch)
tree7bdc6eafe4dec913bf842165b8ea760bf7a27c80 /arch/s390/Kconfig
parentfd15a1f333ff5c55be8d3d94ac4c609afe2fd79f (diff)
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s390: make MAX_PHYSMEM_BITS configurable
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/Kconfig')
-rw-r--r--arch/s390/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index fc842c4bd720..afac5d89ad1f 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -537,6 +537,16 @@ config FORCE_MAX_ZONEORDER
source "mm/Kconfig"
+config MAX_PHYSMEM_BITS
+ int "Maximum size of supported physical memory in bits (42-53)"
+ range 42 53
+ default "46"
+ help
+ This option specifies the maximum supported size of physical memory
+ in bits. Supported is any size between 2^42 (4TB) and 2^53 (8PB).
+ Increasing the number of bits also increases the kernel image size.
+ By default 46 bits (64TB) are supported.
+
config PACK_STACK
def_bool y
prompt "Pack kernel stack"
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