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Commit 54b79248 authored by Mike Kravetz's avatar Mike Kravetz Committed by Paul Mackerras
Browse files

[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: default avatarMike Kravetz <kravetz@us.ibm.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 76c8e25b

arch/powerpc/mm/hash_utils_64.c

+9 −0
Original line number Diff line number Diff line
@@ -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;

arch/powerpc/mm/mem.c

+3 −0
Original line number Diff line number Diff line
@@ -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;

include/asm-powerpc/sparsemem.h

+4 −0
Original line number Diff line number Diff line
@@ -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 */