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| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #ifndef _ASM_POWERPC_PGTABLE_RADIX_64K_H |
| 3 | #define _ASM_POWERPC_PGTABLE_RADIX_64K_H |
| 4 | |
| 5 | /* |
| 6 | * For 64K page size supported index is 13/9/9/5 |
| 7 | */ |
| 8 | #define RADIX_PTE_INDEX_SIZE 5 // size: 8B << 5 = 256B, maps 2^5 x 64K = 2MB |
| 9 | #define RADIX_PMD_INDEX_SIZE 9 // size: 8B << 9 = 4KB, maps 2^9 x 2MB = 1GB |
| 10 | #define RADIX_PUD_INDEX_SIZE 9 // size: 8B << 9 = 4KB, maps 2^9 x 1GB = 512GB |
| 11 | #define RADIX_PGD_INDEX_SIZE 13 // size: 8B << 13 = 64KB, maps 2^13 x 512GB = 4PB |
| 12 | |
| 13 | /* |
| 14 | * We use a 256 byte PTE page fragment in radix |
| 15 | * 8 bytes per each PTE entry. |
| 16 | */ |
| 17 | #define RADIX_PTE_FRAG_SIZE_SHIFT (RADIX_PTE_INDEX_SIZE + 3) |
| 18 | #define RADIX_PTE_FRAG_NR (PAGE_SIZE >> RADIX_PTE_FRAG_SIZE_SHIFT) |
| 19 | |
| 20 | #define RADIX_PMD_FRAG_SIZE_SHIFT (RADIX_PMD_INDEX_SIZE + 3) |
| 21 | #define RADIX_PMD_FRAG_NR (PAGE_SIZE >> RADIX_PMD_FRAG_SIZE_SHIFT) |
| 22 | |
| 23 | #endif /* _ASM_POWERPC_PGTABLE_RADIX_64K_H */ |
| 24 |
Warning: This file is not a C or C++ file. It does not have highlighting.