linux/include/asm-x86/sparsemem_64.h
Thomas Gleixner 96a388de5d i386/x86_64: move headers to include/asm-x86
Move the headers to include/asm-x86 and fixup the
header install make rules

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-10-11 11:20:03 +02:00

27 lines
678 B
C

#ifndef _ASM_X86_64_SPARSEMEM_H
#define _ASM_X86_64_SPARSEMEM_H 1
#ifdef CONFIG_SPARSEMEM
/*
* generic non-linear memory support:
*
* 1) we will not split memory into more chunks than will fit into the flags
* field of the struct page
*
* SECTION_SIZE_BITS 2^n: size of each section
* MAX_PHYSADDR_BITS 2^n: max size of physical address space
* MAX_PHYSMEM_BITS 2^n: how much memory we can have in that space
*
*/
#define SECTION_SIZE_BITS 27 /* matt - 128 is convenient right now */
#define MAX_PHYSADDR_BITS 40
#define MAX_PHYSMEM_BITS 40
extern int early_pfn_to_nid(unsigned long pfn);
#endif /* CONFIG_SPARSEMEM */
#endif /* _ASM_X86_64_SPARSEMEM_H */