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[S390] sparsemem: use SPARSEMEM_STATIC if !64BIT. 

In case of !64BIT kernel we end up with a zero sized mem_section array.
This happens because NR_MEM_SECTIONS is smaller than SECTIONS_PER_ROOT
but we have:

#define NR_SECTION_ROOTS (NR_MEM_SECTIONS / SECTIONS_PER_ROOT)

and

struct mem_section *mem_section[NR_SECTION_ROOTS];

So fix this by selecting SPARSEMEM_STATIC which makes sure
that SECTIONS_PER_ROOT is 1.

Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2008-06-10 10:03:18 +02:00 committed by Martin Schwidefsky
parent 5e70b7f3c2
commit 148f1678f0
1 changed files with 1 additions and 0 deletions
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arch/s390/Kconfig
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@ -304,6 +304,7 @@ config ARCH_SPARSEMEM_ENABLE
def_bool y
select SPARSEMEM_VMEMMAP_ENABLE
select SPARSEMEM_VMEMMAP
select SPARSEMEM_STATIC if !64BIT
config ARCH_SPARSEMEM_DEFAULT
def_bool y