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1be7d9935b
This patch introduces the conditional changes required for the three memory models. With [patch 1/4] there are three memory models; FLATMEM, DISCONTIG and SPARSEMEM. Also a new arch include file sparemem.h is introduced for defining SPARSEMEM parameters. Signed-off-by: Bob Picco <bob.picco@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
21 lines
582 B
C
21 lines
582 B
C
#ifndef _ASM_IA64_SPARSEMEM_H
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#define _ASM_IA64_SPARSEMEM_H
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#ifdef CONFIG_SPARSEMEM
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/*
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* SECTION_SIZE_BITS 2^N: how big each section will be
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* MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space
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*/
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#define SECTION_SIZE_BITS (30)
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#define MAX_PHYSMEM_BITS (50)
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#ifdef CONFIG_FORCE_MAX_ZONEORDER
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#if ((CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS)
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#undef SECTION_SIZE_BITS
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#define SECTION_SIZE_BITS (CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT)
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#endif
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#endif
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#endif /* CONFIG_SPARSEMEM */
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#endif /* _ASM_IA64_SPARSEMEM_H */
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