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x86: merge include/asm-x86/sparsemem.h

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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Thomas Gleixner
2008-01-30 13:30:37 +01:00
committed by Ingo Molnar
parent 4757d7d8d0
commit 8a423ff0c4
4 changed files with 34 additions and 57 deletions
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35
include/asm-x86/sparsemem.h
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@@ -1,5 +1,34 @@
#ifndef _ASM_X86_SPARSEMEM_H
#define _ASM_X86_SPARSEMEM_H
#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
*
*/
#ifdef CONFIG_X86_32
# include "sparsemem_32.h"
#else
# include "sparsemem_64.h"
# ifdef CONFIG_X86_PAE
# define SECTION_SIZE_BITS 30
# define MAX_PHYSADDR_BITS 36
# define MAX_PHYSMEM_BITS 36
# else
# define SECTION_SIZE_BITS 26
# define MAX_PHYSADDR_BITS 32
# define MAX_PHYSMEM_BITS 32
# endif
#else /* CONFIG_X86_32 */
# define SECTION_SIZE_BITS 27 /* matt - 128 is convenient right now */
# define MAX_PHYSADDR_BITS 40
# define MAX_PHYSMEM_BITS 40
#endif
#endif /* CONFIG_SPARSEMEM */
#endif