^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #ifndef _ASM_X86_SPARSEMEM_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define _ASM_X86_SPARSEMEM_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #ifdef CONFIG_SPARSEMEM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * generic non-linear memory support:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * 1) we will not split memory into more chunks than will fit into the flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * field of the struct page
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * SECTION_SIZE_BITS 2^n: size of each section
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * MAX_PHYSMEM_BITS 2^n: max size of physical address space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #ifdef CONFIG_X86_32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) # ifdef CONFIG_X86_PAE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) # define SECTION_SIZE_BITS 29
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) # define MAX_PHYSMEM_BITS 36
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) # else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) # define SECTION_SIZE_BITS 26
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) # define MAX_PHYSMEM_BITS 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) # endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #else /* CONFIG_X86_32 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) # define SECTION_SIZE_BITS 27 /* matt - 128 is convenient right now */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) # define MAX_PHYSMEM_BITS (pgtable_l5_enabled() ? 52 : 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #endif /* CONFIG_SPARSEMEM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #ifndef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #ifdef CONFIG_NUMA_KEEP_MEMINFO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) extern int phys_to_target_node(phys_addr_t start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define phys_to_target_node phys_to_target_node
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) extern int memory_add_physaddr_to_nid(u64 start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define memory_add_physaddr_to_nid memory_add_physaddr_to_nid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #endif /* __ASSEMBLY__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #endif /* _ASM_X86_SPARSEMEM_H */