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[PATCH] revised Memory Add Fixes for ppc64 

Add the create_section_mapping() routine to create hptes for memory
sections dynamically added after system boot.

Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Mike Kravetz 2005-11-07 16:25:48 -08:00 committed by Paul Mackerras
parent 76c8e25b90
commit 54b79248b2
3 changed files with 16 additions and 0 deletions
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9
arch/powerpc/mm/hash_utils_64.c
View File

@ -386,6 +386,15 @@ static unsigned long __init htab_get_table_size(void)
return pteg_count << 7;
}
#ifdef CONFIG_MEMORY_HOTPLUG
void create_section_mapping(unsigned long start, unsigned long end)
{
BUG_ON(htab_bolt_mapping(start, end, start,
_PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_COHERENT | PP_RWXX,
mmu_linear_psize));
}
#endif /* CONFIG_MEMORY_HOTPLUG */
void __init htab_initialize(void)
{
unsigned long table, htab_size_bytes;

3
arch/powerpc/mm/mem.c
View File

@ -127,6 +127,9 @@ int __devinit add_memory(u64 start, u64 size)
unsigned long start_pfn = start >> PAGE_SHIFT;
unsigned long nr_pages = size >> PAGE_SHIFT;
start += KERNELBASE;
create_section_mapping(start, start + size);
/* this should work for most non-highmem platforms */
zone = pgdata->node_zones;

4
include/asm-powerpc/sparsemem.h
View File

@ -11,6 +11,10 @@
#define MAX_PHYSADDR_BITS 38
#define MAX_PHYSMEM_BITS 36
#ifdef CONFIG_MEMORY_HOTPLUG
extern void create_section_mapping(unsigned long start, unsigned long end);
#endif /* CONFIG_MEMORY_HOTPLUG */
#endif /* CONFIG_SPARSEMEM */
#endif /* _ASM_POWERPC_SPARSEMEM_H */