1 /* SPDX-License-Identifier: GPL-2.0 */ 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 */ 22