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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1be7d993 BP |
2 | #ifndef _ASM_IA64_SPARSEMEM_H |
3 | #define _ASM_IA64_SPARSEMEM_H | |
4 | ||
5 | #ifdef CONFIG_SPARSEMEM | |
6 | /* | |
7 | * SECTION_SIZE_BITS 2^N: how big each section will be | |
8 | * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space | |
9 | */ | |
10 | ||
11 | #define SECTION_SIZE_BITS (30) | |
12 | #define MAX_PHYSMEM_BITS (50) | |
13 | #ifdef CONFIG_FORCE_MAX_ZONEORDER | |
14 | #if ((CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS) | |
15 | #undef SECTION_SIZE_BITS | |
16 | #define SECTION_SIZE_BITS (CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) | |
17 | #endif | |
18 | #endif | |
19 | ||
20 | #endif /* CONFIG_SPARSEMEM */ | |
21 | #endif /* _ASM_IA64_SPARSEMEM_H */ |