Messages in this thread Patch in this message | | | Date | Fri, 4 Nov 2005 15:18:00 -0800 | From | Mike Kravetz <> | Subject | [PATCH 1/4] 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>
diff -Naupr linux-2.6.14-git7/arch/powerpc/mm/hash_utils_64.c linux-2.6.14-git7.work/arch/powerpc/mm/hash_utils_64.c --- linux-2.6.14-git7/arch/powerpc/mm/hash_utils_64.c 2005-11-04 21:21:05.000000000 +0000 +++ linux-2.6.14-git7.work/arch/powerpc/mm/hash_utils_64.c 2005-11-04 22:05:06.000000000 +0000 @@ -176,6 +176,15 @@ static unsigned long get_hashtable_size( return pteg_count << 7; } +#ifdef CONFIG_MEMORY_HOTPLUG +void create_section_mapping(unsigned long start, unsigned long end) +{ + create_pte_mapping(start, end, + _PAGE_ACCESSED | _PAGE_COHERENT | PP_RWXX, + cur_cpu_spec->cpu_features & CPU_FTR_16M_PAGE ? 1 : 0); +} +#endif /* CONFIG_MEMORY_HOTPLUG */ + void __init htab_initialize(void) { unsigned long table, htab_size_bytes; diff -Naupr linux-2.6.14-git7/arch/powerpc/mm/mem.c linux-2.6.14-git7.work/arch/powerpc/mm/mem.c --- linux-2.6.14-git7/arch/powerpc/mm/mem.c 2005-11-04 21:21:05.000000000 +0000 +++ linux-2.6.14-git7.work/arch/powerpc/mm/mem.c 2005-11-04 22:05:06.000000000 +0000 @@ -124,6 +124,9 @@ int __devinit add_memory(u64 start, u64 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 -Naupr linux-2.6.14-git7/include/asm-ppc64/sparsemem.h linux-2.6.14-git7.work/include/asm-ppc64/sparsemem.h --- linux-2.6.14-git7/include/asm-ppc64/sparsemem.h 2005-10-28 00:02:08.000000000 +0000 +++ linux-2.6.14-git7.work/include/asm-ppc64/sparsemem.h 2005-11-04 22:05:06.000000000 +0000 @@ -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_PPC64_SPARSEMEM_H */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |