[S390] sparsemem: use SPARSEMEM_STATIC if !64BIT. · 148f1678f0 - Gogs

[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>

Heiko Carstens 17 years ago

parent

5e70b7f3c2

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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