[mirror_ubuntu-focal-kernel.git] / arch / ia64 / include / asm / sparsemem.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_IA64_SPARSEMEM_H
#define _ASM_IA64_SPARSEMEM_H

#ifdef CONFIG_SPARSEMEM
/*
 * SECTION_SIZE_BITS            2^N: how big each section will be
 * MAX_PHYSMEM_BITS             2^N: how much memory we can have in that space
 */

#define SECTION_SIZE_BITS	(30)
#define MAX_PHYSMEM_BITS	(50)
#ifdef CONFIG_FORCE_MAX_ZONEORDER
#if ((CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS)
#undef SECTION_SIZE_BITS
#define SECTION_SIZE_BITS (CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT)
#endif
#endif

#endif /* CONFIG_SPARSEMEM */
#endif /* _ASM_IA64_SPARSEMEM_H */
Commit	Line	Data
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 */