diff options
| author | Mike Kravetz <kravetz@us.ibm.com> | 2005-11-08 01:25:48 +0100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2005-11-08 05:17:13 +0100 |
| commit | 54b79248b24610663298e122c6ba3804468271fe (patch) | |
| tree | d8af884b602053ce2d2ed37cdcbfe461c2416b4f | |
| parent | [PATCH] ppc64: Fix the lazy icache/dcache code for non-RAM pages (diff) | |
| download | linux-54b79248b24610663298e122c6ba3804468271fe.tar.xz linux-54b79248b24610663298e122c6ba3804468271fe.zip | |
[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>
| -rw-r--r-- | arch/powerpc/mm/hash_utils_64.c | 9 | ||||
| -rw-r--r-- | arch/powerpc/mm/mem.c | 3 | ||||
| -rw-r--r-- | include/asm-powerpc/sparsemem.h | 4 |
3 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 22e474876133..c8c9c2df97e9 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -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; diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 6f55efd9be95..2ead0951823a 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -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; diff --git a/include/asm-powerpc/sparsemem.h b/include/asm-powerpc/sparsemem.h index 1c95ab99deb3..58d2aab416f8 100644 --- a/include/asm-powerpc/sparsemem.h +++ b/include/asm-powerpc/sparsemem.h @@ -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 */ |