diff options
| -rw-r--r-- | arch/s390/Kconfig | 10 | ||||
| -rw-r--r-- | arch/s390/include/asm/sparsemem.h | 2 |
2 files changed, 11 insertions, 1 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" diff --git a/arch/s390/include/asm/sparsemem.h b/arch/s390/include/asm/sparsemem.h index 487428b6d099..334e279f1bce 100644 --- a/arch/s390/include/asm/sparsemem.h +++ b/arch/s390/include/asm/sparsemem.h @@ -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 */ |