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s390: get rid of odd global real_memory_size 

The variable real_memory_size has odd semantics and has been used in
a broken way by e.g. the old kvm code.
Therefore get rid of it before anybody else makes use of it.

Reviewed-by: Michael Holzheu <holzheu@linux.vnet.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 2013-04-29 17:32:34 +02:00 committed by Martin Schwidefsky
parent edefc7107a
commit 118131a2d5
2 changed files with 11 additions and 9 deletions
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1
arch/s390/include/asm/setup.h
View File

@ -43,7 +43,6 @@ 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;

19
arch/s390/kernel/setup.c
View File

@ -502,12 +502,10 @@ static void __init setup_resources(void)
}
}
unsigned long real_memory_size;
EXPORT_SYMBOL_GPL(real_memory_size);
static void __init setup_memory_end(void)
{
unsigned long vmax, vmalloc_size, tmp;
unsigned long real_memory_size = 0;
int i;
@ -517,7 +515,6 @@ static void __init setup_memory_end(void)
memory_end_set = 1;
}
#endif
real_memory_size = 0;
memory_end &= PAGE_MASK;
/*
@ -719,16 +716,22 @@ static struct notifier_block kdump_mem_nb = {
static void reserve_oldmem(void)
{
#ifdef CONFIG_CRASH_DUMP
unsigned long real_size = 0;
int i;
if (!OLDMEM_BASE)
return;
for (i = 0; i < MEMORY_CHUNKS; i++) {
struct mem_chunk *chunk = &memory_chunk[i];
real_size = max(real_size, chunk->addr + chunk->size);
}
reserve_kdump_bootmem(OLDMEM_BASE, OLDMEM_SIZE, CHUNK_OLDMEM);
reserve_kdump_bootmem(OLDMEM_SIZE, memory_end - OLDMEM_SIZE,
CHUNK_OLDMEM);
if (OLDMEM_BASE + OLDMEM_SIZE == real_memory_size)
reserve_kdump_bootmem(OLDMEM_SIZE, real_size - OLDMEM_SIZE, CHUNK_OLDMEM);
if (OLDMEM_BASE + OLDMEM_SIZE == real_size)
saved_max_pfn = PFN_DOWN(OLDMEM_BASE) - 1;
else
saved_max_pfn = PFN_DOWN(real_memory_size) - 1;
saved_max_pfn = PFN_DOWN(real_size) - 1;
#endif
}