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Commit b8402b95 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
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s390: make MAX_PHYSMEM_BITS configurable 



Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent fd15a1f3

arch/s390/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -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"

arch/s390/include/asm/sparsemem.h

+1 −1
Original line number Diff line number Diff line
@@ -2,6 +2,6 @@ 
#define _ASM_S390_SPARSEMEM_H



#define SECTION_SIZE_BITS	28

#define MAX_PHYSMEM_BITS	46

#define MAX_PHYSMEM_BITS	CONFIG_MAX_PHYSMEM_BITS



#endif /* _ASM_S390_SPARSEMEM_H */