linux/arch/powerpc/include/asm/sparsemem.h
Benjamin Herrenschmidt cb694769f0 Revert "powerpc/mm: Bump SECTION_SIZE_BITS from 16MB to 256MB"
This reverts commit 7545ba6f82.

It breaks eHEA among other issues
2010-04-13 13:54:39 +10:00

33 lines
906 B
C

#ifndef _ASM_POWERPC_SPARSEMEM_H
#define _ASM_POWERPC_SPARSEMEM_H 1
#ifdef __KERNEL__
#ifdef CONFIG_SPARSEMEM
/*
* SECTION_SIZE_BITS 2^N: how big each section will be
* MAX_PHYSADDR_BITS 2^N: how much physical address space we have
* MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space
*/
#define SECTION_SIZE_BITS 24
#define MAX_PHYSADDR_BITS 44
#define MAX_PHYSMEM_BITS 44
#endif /* CONFIG_SPARSEMEM */
#ifdef CONFIG_MEMORY_HOTPLUG
extern void create_section_mapping(unsigned long start, unsigned long end);
extern int remove_section_mapping(unsigned long start, unsigned long end);
#ifdef CONFIG_NUMA
extern int hot_add_scn_to_nid(unsigned long scn_addr);
#else
static inline int hot_add_scn_to_nid(unsigned long scn_addr)
{
return 0;
}
#endif /* CONFIG_NUMA */
#endif /* CONFIG_MEMORY_HOTPLUG */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_SPARSEMEM_H */