[LV-commit] CVS: kernel-2.4/include/asm-vax/mm pgtable.h,1.3,1.4

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Update of /cvsroot/linux-vax/kernel-2.4/include/asm-vax/mm
In directory usw-pr-cvs1:/tmp/cvs-serv32677/mm

Modified Files:
	pgtable.h 
Log Message:
Bring over latter 2.2 changes and a few fixes for 2.4

Index: pgtable.h
===================================================================
RCS file: /cvsroot/linux-vax/kernel-2.4/include/asm-vax/mm/pgtable.h,v
retrieving revision 1.3
retrieving revision 1.4
diff -C2 -r1.3 -r1.4
*** pgtable.h	2001/01/18 18:49:49	1.3
--- pgtable.h	2001/01/24 00:07:42	1.4
***************
*** 5,9 ****
  #include <linux/config.h>
  #include <linux/types.h>
- #endif  /* !__ASSEMBLY__ */

  #include <asm/mtpr.h>
--- 5,8 ----
***************
*** 11,14 ****
--- 10,14 ----
  #include <asm/mm/virt_trans.h> 

+ #endif  /* !__ASSEMBLY__ */

  /*
***************
*** 30,37 ****
--- 30,39 ----
  #define flush_cache_page(vma, vmaddr)		do { } while (0)
  #define flush_page_to_ram(page)			do { } while (0)
+ #define flush_dcache_page(page)			do { } while (0)

  /* Flushing the instruction cache is all-or-nothing on VAX. */
  #define flush_icache_range(start, end)		flush_icache()
+ #define flush_icache_page(vma, pg)		flush_icache()

  static inline void flush_icache(void)
***************
*** 57,66 ****
  /* PMD_SHIFT determines the size of the area a second-level page table can map */
  /* 128 * 512. 128 ptes/page */
! #define PMD_SHIFT	16
  #define PMD_SIZE	(1UL << PMD_SHIFT)
  #define PMD_MASK	(~(PMD_SIZE-1))

  /* PGDIR_SHIFT determines what a third-level page table entry can map */
! #define PGDIR_SHIFT	16
  #define PGDIR_SIZE	(1UL << PGDIR_SHIFT)
  #define PGDIR_MASK	(~(PGDIR_SIZE-1))
--- 59,68 ----
  /* PMD_SHIFT determines the size of the area a second-level page table can map */
  /* 128 * 512. 128 ptes/page */
! #define PMD_SHIFT	30
  #define PMD_SIZE	(1UL << PMD_SHIFT)
  #define PMD_MASK	(~(PMD_SIZE-1))

  /* PGDIR_SHIFT determines what a third-level page table entry can map */
! #define PGDIR_SHIFT	30
  #define PGDIR_SIZE	(1UL << PGDIR_SHIFT)
  #define PGDIR_MASK	(~(PGDIR_SIZE-1))
***************
*** 73,83 ****
  #define PTRS_PER_PTE	128
  #define PTRS_PER_PMD	1
! #define PTRS_PER_PGD	128
! /* fix this FIXME: */
! #define USER_PTRS_PER_PGD	(TASK_SIZE/PGDIR_SIZE)
  /*
   * pgd entries used up by user/kernel:
   */
- 
  #define USER_PGD_PTRS (PAGE_OFFSET >> PGDIR_SHIFT)
  #define KERNEL_PGD_PTRS (PTRS_PER_PGD-USER_PGD_PTRS)
--- 75,88 ----
  #define PTRS_PER_PTE	128
  #define PTRS_PER_PMD	1
! #define PTRS_PER_PGD   6       /* not actually real pointers.  We store
!                                    P0BR, P0LR, P1BR, P1LR, SBR and SLR
!                                    in the PGD.  SBR is stored here as a
!                                    _virtual_ address, while the SBR 
!                                    processor hold a physical address */
! #define USER_PTRS_PER_PGD      4
! 
  /*
   * pgd entries used up by user/kernel:
   */
  #define USER_PGD_PTRS (PAGE_OFFSET >> PGDIR_SHIFT)
  #define KERNEL_PGD_PTRS (PTRS_PER_PGD-USER_PGD_PTRS)
***************
*** 86,90 ****
  #define FIRST_USER_PGD_NR  0

- 
  #define pte_ERROR(e) \
  	printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
--- 91,94 ----
***************
*** 122,126 ****

  /* nb, this block assumes page_size 512 bytes. FIXME: */
! #define SPT_MAX_IOMAP 128
  #define SPT_MAX_VMALLOC 4096
  #define SPT_ENTRIES_IOMAP (SPT_MAX_IOMAP * 2)
--- 126,130 ----

  /* nb, this block assumes page_size 512 bytes. FIXME: */
! #define SPT_MAX_IOMAP 1024
  #define SPT_MAX_VMALLOC 4096
  #define SPT_ENTRIES_IOMAP (SPT_MAX_IOMAP * 2)
***************
*** 204,219 ****

  #ifndef __ASSEMBLY__
- /* page table for 0-4MB for everybody */
- /* This is a c reference to the start of the system page table  
-  * (see arch/vax/boot/head.S). The spt is initialised to cover physical
-  * memory by early boot code, based on VMB supplied information. Further
-  * expansion happens later in the boot sequence */
- extern pte_t *pg0;
- 
- /* Number of SPTEs in system page table */
- extern unsigned int spt_size;
- 
- /* zero page used for uninitialized stuff */
- /* extern unsigned long empty_zero_page[1024]; */

  /*
--- 208,211 ----
***************
*** 229,233 ****
  #define BAD_PAGETABLE __bad_pagetable()
  #define BAD_PAGE __bad_page()
! #define ZERO_PAGE(vaddr) ((unsigned long) (PAGE_OFFSET+0x10800))
  /* number of bits that fit into a memory pointer */
  #define BITS_PER_PTR			(8*sizeof(unsigned long))
--- 221,228 ----
  #define BAD_PAGETABLE __bad_pagetable()
  #define BAD_PAGE __bad_page()
! 
! extern unsigned long empty_zero_page[PAGE_SIZE/sizeof(unsigned long)];
! #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
! 
  /* number of bits that fit into a memory pointer */
  #define BITS_PER_PTR			(8*sizeof(unsigned long))
***************
*** 346,356 ****

! extern pgd_t swapper_pg_dir[1024];

  /* copy_segments and friends now in system.h */

- #endif /* !__ASSEMBLY__ */
- 
  /* Needs to be defined here and not in linux/mm.h, as it is arch dependent 
   * This is used on sparc processors to implement memory holes */
--- 341,349 ----

! extern pgd_t swapper_pg_dir[PTRS_PER_PGD];

  /* copy_segments and friends now in system.h */

  /* Needs to be defined here and not in linux/mm.h, as it is arch dependent 
   * This is used on sparc processors to implement memory holes */
***************
*** 385,390 ****
--- 378,388 ----
  #define swp_entry_to_pte(x)             ((pte_t) { (x).val })

+ /* Memory sizing.  You'll need to #include <asm/rpb.h> to get
+    the declaration of boot_rpb. */
+ #define max_pfn (boot_rpb.l_max_pfn)
+ 
  #include <asm-generic/pgtable.h>

+ #endif /* !__ASSEMBLY__ */