kernel-fxtec-pro1x/include/asm-um/pgtable-3level.h

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/*
* Copyright 2003 PathScale Inc
* Derived from include/asm-i386/pgtable.h
* Licensed under the GPL
*/
#ifndef __UM_PGTABLE_3LEVEL_H
#define __UM_PGTABLE_3LEVEL_H
#include <asm-generic/pgtable-nopud.h>
/* 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))
/* PMD_SHIFT determines the size of the area a second-level page table can
* map
*/
#define PMD_SHIFT 21
#define PMD_SIZE (1UL << PMD_SHIFT)
#define PMD_MASK (~(PMD_SIZE-1))
/*
* entries per page directory level
*/
#define PTRS_PER_PTE 512
#define PTRS_PER_PMD 512
#define USER_PTRS_PER_PGD ((TASK_SIZE + (PGDIR_SIZE - 1)) / PGDIR_SIZE)
#define PTRS_PER_PGD 512
#define FIRST_USER_ADDRESS 0
#define pte_ERROR(e) \
printk("%s:%d: bad pte %p(%016lx).\n", __FILE__, __LINE__, &(e), \
pte_val(e))
#define pmd_ERROR(e) \
printk("%s:%d: bad pmd %p(%016lx).\n", __FILE__, __LINE__, &(e), \
pmd_val(e))
#define pgd_ERROR(e) \
printk("%s:%d: bad pgd %p(%016lx).\n", __FILE__, __LINE__, &(e), \
pgd_val(e))
#define pud_none(x) (!(pud_val(x) & ~_PAGE_NEWPAGE))
#define pud_bad(x) ((pud_val(x) & (~PAGE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE)
#define pud_present(x) (pud_val(x) & _PAGE_PRESENT)
#define pud_populate(mm, pud, pmd) \
set_pud(pud, __pud(_PAGE_TABLE + __pa(pmd)))
#define set_pud(pudptr, pudval) set_64bit((phys_t *) (pudptr), pud_val(pudval))
static inline int pgd_newpage(pgd_t pgd)
{
return(pgd_val(pgd) & _PAGE_NEWPAGE);
}
static inline void pgd_mkuptodate(pgd_t pgd) { pgd_val(pgd) &= ~_PAGE_NEWPAGE; }
#define set_pmd(pmdptr, pmdval) set_64bit((phys_t *) (pmdptr), pmd_val(pmdval))
uml: header untangling Untangle UML headers somewhat and add some includes where they were needed explicitly, but gotten accidentally via some other header. arch/um/include/um_uaccess.h loses asm/fixmap.h because it uses no fixmap stuff and gains elf.h, because it needs FIXADDR_USER_*, and archsetjmp.h, because it needs jmp_buf. pmd_alloc_one is uninlined because it needs mm_struct, and that's inconvenient to provide in asm-um/pgtable-3level.h. elf_core_copy_fpregs is also uninlined from elf-i386.h and elf-x86_64.h, which duplicated the code anyway, to arch/um/kernel/process.c, so that the reference to current_thread doesn't pull sched.h or anything related into asm/elf.h. arch/um/sys-i386/ldt.c, arch/um/kernel/tlb.c and arch/um/kernel/skas/uaccess.c got sched.h because they dereference task_structs. Its includes of linux and asm headers got turned from "" to <>. arch/um/sys-i386/bug.c gets asm/errno.h because it needs errno constants. asm/elf-i386 gets asm/user.h because it needs user_regs_struct. asm/fixmap.h gets page.h because it needs PAGE_SIZE and PAGE_MASK and system.h for BUG_ON. asm/pgtable doesn't need sched.h. asm/processor-generic.h defined mm_segment_t, but didn't use it. So, that definition is moved to uaccess.h, which defines a bunch of mm_segment_t-related stuff. thread_info.h uses mm_segment_t, and includes uaccess.h, which causes a recursion. So, the definition is placed above the include of thread_info. in uaccess.h. thread_info.h also gets page.h because it needs PAGE_SIZE. ObCheckpatchViolationJustification - I'm not adding a typedef; I'm moving mm_segment_t from one place to another. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-04 23:30:53 -07:00
struct mm_struct;
extern pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address);
static inline void pud_clear (pud_t *pud)
{
set_pud(pud, __pud(_PAGE_NEWPAGE));
}
#define pud_page(pud) phys_to_page(pud_val(pud) & PAGE_MASK)
#define pud_page_vaddr(pud) \
((struct page *) __va(pud_val(pud) & PAGE_MASK))
/* Find an entry in the second-level page table.. */
#define pmd_offset(pud, address) ((pmd_t *) pud_page_vaddr(*(pud)) + \
pmd_index(address))
static inline unsigned long pte_pfn(pte_t pte)
{
return phys_to_pfn(pte_val(pte));
}
static inline pte_t pfn_pte(pfn_t page_nr, pgprot_t pgprot)
{
pte_t pte;
phys_t phys = pfn_to_phys(page_nr);
pte_set_val(pte, phys, pgprot);
return pte;
}
static inline pmd_t pfn_pmd(pfn_t page_nr, pgprot_t pgprot)
{
return __pmd((page_nr << PAGE_SHIFT) | pgprot_val(pgprot));
}
/*
* Bits 0 through 3 are taken in the low part of the pte,
* put the 32 bits of offset into the high part.
*/
#define PTE_FILE_MAX_BITS 32
#ifdef CONFIG_64BIT
#define pte_to_pgoff(p) ((p).pte >> 32)
#define pgoff_to_pte(off) ((pte_t) { ((off) << 32) | _PAGE_FILE })
#else
#define pte_to_pgoff(pte) ((pte).pte_high)
#define pgoff_to_pte(off) ((pte_t) { _PAGE_FILE, (off) })
#endif
#endif
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/