1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef __ASM_SH_PGTABLE_2LEVEL_H 3*4882a593Smuzhiyun #define __ASM_SH_PGTABLE_2LEVEL_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #include <asm-generic/pgtable-nopmd.h> 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun /* 8*4882a593Smuzhiyun * traditional two-level paging structure 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun #define PAGETABLE_LEVELS 2 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun /* PTE bits */ 13*4882a593Smuzhiyun #define PTE_MAGNITUDE 2 /* 32-bit PTEs */ 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #define PTE_SHIFT PAGE_SHIFT 16*4882a593Smuzhiyun #define PTE_BITS (PTE_SHIFT - PTE_MAGNITUDE) 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun /* PGD bits */ 19*4882a593Smuzhiyun #define PGDIR_SHIFT (PTE_SHIFT + PTE_BITS) 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun #define PTRS_PER_PGD (PAGE_SIZE / (1 << PTE_MAGNITUDE)) 22*4882a593Smuzhiyun #define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE) 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun #endif /* __ASM_SH_PGTABLE_2LEVEL_H */ 25