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[S390] fix "mem=" handling in case of standby memory

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Standby memory detected with the sclp interface gets always registered
with add_memory calls without considering the limitationt that the
"mem=" kernel paramater implies.
So fix this and only register standby memory that is below the specified
limit.
This fixes zfcpdump since it uses "mem=32M". In case there is appr.
2GB standby memory present all of usable memory would be used for the
struct pages needed for standby memory.

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
2009-02-19 15:19:01 +01:00
committed by Martin Schwidefsky
parent d5cd0343d2
commit 23d75d9cad
3 changed files with 14 additions and 2 deletions
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arch/s390/include/asm/setup.h
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@@ -43,6 +43,8 @@ struct mem_chunk {
extern struct mem_chunk memory_chunk[];
extern unsigned long real_memory_size;
extern int memory_end_set;
extern unsigned long memory_end;
void detect_memory_layout(struct mem_chunk chunk[]);