root/arch/x86/include/asm/pgtable-2level_types.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_X86_PGTABLE_2LEVEL_DEFS_H
   3 #define _ASM_X86_PGTABLE_2LEVEL_DEFS_H
   4 
   5 #ifndef __ASSEMBLY__
   6 #include <linux/types.h>
   7 
   8 typedef unsigned long   pteval_t;
   9 typedef unsigned long   pmdval_t;
  10 typedef unsigned long   pudval_t;
  11 typedef unsigned long   p4dval_t;
  12 typedef unsigned long   pgdval_t;
  13 typedef unsigned long   pgprotval_t;
  14 
  15 typedef union {
  16         pteval_t pte;
  17         pteval_t pte_low;
  18 } pte_t;
  19 #endif  /* !__ASSEMBLY__ */
  20 
  21 #define SHARED_KERNEL_PMD       0
  22 
  23 /*
  24  * traditional i386 two-level paging structure:
  25  */
  26 
  27 #define PGDIR_SHIFT     22
  28 #define PTRS_PER_PGD    1024
  29 
  30 
  31 /*
  32  * the i386 is two-level, so we don't really have any
  33  * PMD directory physically.
  34  */
  35 
  36 #define PTRS_PER_PTE    1024
  37 
  38 /* This covers all VMSPLIT_* and VMSPLIT_*_OPT variants */
  39 #define PGD_KERNEL_START        (CONFIG_PAGE_OFFSET >> PGDIR_SHIFT)
  40 
  41 #endif /* _ASM_X86_PGTABLE_2LEVEL_DEFS_H */