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5e0a760b44
commit 23baf831a3 ("mm, treewide: redefine MAX_ORDER sanely") has
changed the definition of MAX_ORDER to be inclusive. This has caused
issues with code that was not yet upstream and depended on the previous
definition.
To draw attention to the altered meaning of the define, rename MAX_ORDER
to MAX_PAGE_ORDER.
Link: https://lkml.kernel.org/r/20231228144704.14033-2-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
29 lines
681 B
C
29 lines
681 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 ARM Ltd.
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*/
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#ifndef __ASM_SPARSEMEM_H
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#define __ASM_SPARSEMEM_H
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#define MAX_PHYSMEM_BITS CONFIG_ARM64_PA_BITS
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/*
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* Section size must be at least 512MB for 64K base
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* page size config. Otherwise it will be less than
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* MAX_PAGE_ORDER and the build process will fail.
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*/
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#ifdef CONFIG_ARM64_64K_PAGES
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#define SECTION_SIZE_BITS 29
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#else
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/*
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* Section size must be at least 128MB for 4K base
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* page size config. Otherwise PMD based huge page
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* entries could not be created for vmemmap mappings.
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* 16K follows 4K for simplicity.
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*/
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#define SECTION_SIZE_BITS 27
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#endif /* CONFIG_ARM64_64K_PAGES */
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#endif
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