| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _ASM_POWERPC_PGTABLE_RADIX_64K_H |
| #define _ASM_POWERPC_PGTABLE_RADIX_64K_H |
| |
| /* |
| * For 64K page size supported index is 13/9/9/5 |
| */ |
| #define RADIX_PTE_INDEX_SIZE 5 // size: 8B << 5 = 256B, maps 2^5 x 64K = 2MB |
| #define RADIX_PMD_INDEX_SIZE 9 // size: 8B << 9 = 4KB, maps 2^9 x 2MB = 1GB |
| #define RADIX_PUD_INDEX_SIZE 9 // size: 8B << 9 = 4KB, maps 2^9 x 1GB = 512GB |
| #define RADIX_PGD_INDEX_SIZE 13 // size: 8B << 13 = 64KB, maps 2^13 x 512GB = 4PB |
| |
| /* |
| * We use a 256 byte PTE page fragment in radix |
| * 8 bytes per each PTE entry. |
| */ |
| #define RADIX_PTE_FRAG_SIZE_SHIFT (RADIX_PTE_INDEX_SIZE + 3) |
| #define RADIX_PTE_FRAG_NR (PAGE_SIZE >> RADIX_PTE_FRAG_SIZE_SHIFT) |
| |
| #define RADIX_PMD_FRAG_SIZE_SHIFT (RADIX_PMD_INDEX_SIZE + 3) |
| #define RADIX_PMD_FRAG_NR (PAGE_SIZE >> RADIX_PMD_FRAG_SIZE_SHIFT) |
| |
| #endif /* _ASM_POWERPC_PGTABLE_RADIX_64K_H */ |
