mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-30 16:13:54 +08:00
eab724e5df
Make pmd_bad() symmetrical to pgd_bad() and pud_bad(). At once, simplify them all. TBD: tighten down the checks again as suggested by Hugh D. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de>
451 lines
15 KiB
C
451 lines
15 KiB
C
#ifndef _X86_64_PGTABLE_H
|
|
#define _X86_64_PGTABLE_H
|
|
|
|
/*
|
|
* This file contains the functions and defines necessary to modify and use
|
|
* the x86-64 page table tree.
|
|
*/
|
|
#include <asm/processor.h>
|
|
#include <asm/fixmap.h>
|
|
#include <asm/bitops.h>
|
|
#include <linux/threads.h>
|
|
#include <asm/pda.h>
|
|
|
|
extern pud_t level3_kernel_pgt[512];
|
|
extern pud_t level3_physmem_pgt[512];
|
|
extern pud_t level3_ident_pgt[512];
|
|
extern pmd_t level2_kernel_pgt[512];
|
|
extern pgd_t init_level4_pgt[];
|
|
extern pgd_t boot_level4_pgt[];
|
|
extern unsigned long __supported_pte_mask;
|
|
|
|
#define swapper_pg_dir init_level4_pgt
|
|
|
|
extern void paging_init(void);
|
|
extern void clear_kernel_mapping(unsigned long addr, unsigned long size);
|
|
|
|
/*
|
|
* ZERO_PAGE is a global shared page that is always zero: used
|
|
* for zero-mapped memory areas etc..
|
|
*/
|
|
extern unsigned long empty_zero_page[PAGE_SIZE/sizeof(unsigned long)];
|
|
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
|
|
|
|
/*
|
|
* PGDIR_SHIFT determines what a top-level page table entry can map
|
|
*/
|
|
#define PGDIR_SHIFT 39
|
|
#define PTRS_PER_PGD 512
|
|
|
|
/*
|
|
* 3rd level page
|
|
*/
|
|
#define PUD_SHIFT 30
|
|
#define PTRS_PER_PUD 512
|
|
|
|
/*
|
|
* PMD_SHIFT determines the size of the area a middle-level
|
|
* page table can map
|
|
*/
|
|
#define PMD_SHIFT 21
|
|
#define PTRS_PER_PMD 512
|
|
|
|
/*
|
|
* entries per page directory level
|
|
*/
|
|
#define PTRS_PER_PTE 512
|
|
|
|
#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 pud_ERROR(e) \
|
|
printk("%s:%d: bad pud %p(%016lx).\n", __FILE__, __LINE__, &(e), pud_val(e))
|
|
#define pgd_ERROR(e) \
|
|
printk("%s:%d: bad pgd %p(%016lx).\n", __FILE__, __LINE__, &(e), pgd_val(e))
|
|
|
|
#define pgd_none(x) (!pgd_val(x))
|
|
#define pud_none(x) (!pud_val(x))
|
|
|
|
static inline void set_pte(pte_t *dst, pte_t val)
|
|
{
|
|
pte_val(*dst) = pte_val(val);
|
|
}
|
|
#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
|
|
|
|
static inline void set_pmd(pmd_t *dst, pmd_t val)
|
|
{
|
|
pmd_val(*dst) = pmd_val(val);
|
|
}
|
|
|
|
static inline void set_pud(pud_t *dst, pud_t val)
|
|
{
|
|
pud_val(*dst) = pud_val(val);
|
|
}
|
|
|
|
static inline void pud_clear (pud_t *pud)
|
|
{
|
|
set_pud(pud, __pud(0));
|
|
}
|
|
|
|
static inline void set_pgd(pgd_t *dst, pgd_t val)
|
|
{
|
|
pgd_val(*dst) = pgd_val(val);
|
|
}
|
|
|
|
static inline void pgd_clear (pgd_t * pgd)
|
|
{
|
|
set_pgd(pgd, __pgd(0));
|
|
}
|
|
|
|
#define ptep_get_and_clear(mm,addr,xp) __pte(xchg(&(xp)->pte, 0))
|
|
|
|
struct mm_struct;
|
|
|
|
static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, unsigned long addr, pte_t *ptep, int full)
|
|
{
|
|
pte_t pte;
|
|
if (full) {
|
|
pte = *ptep;
|
|
*ptep = __pte(0);
|
|
} else {
|
|
pte = ptep_get_and_clear(mm, addr, ptep);
|
|
}
|
|
return pte;
|
|
}
|
|
|
|
#define pte_same(a, b) ((a).pte == (b).pte)
|
|
|
|
#define pte_pgprot(a) (__pgprot((a).pte & ~PHYSICAL_PAGE_MASK))
|
|
|
|
#define PMD_SIZE (1UL << PMD_SHIFT)
|
|
#define PMD_MASK (~(PMD_SIZE-1))
|
|
#define PUD_SIZE (1UL << PUD_SHIFT)
|
|
#define PUD_MASK (~(PUD_SIZE-1))
|
|
#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
|
|
#define PGDIR_MASK (~(PGDIR_SIZE-1))
|
|
|
|
#define USER_PTRS_PER_PGD ((TASK_SIZE-1)/PGDIR_SIZE+1)
|
|
#define FIRST_USER_ADDRESS 0
|
|
|
|
#ifndef __ASSEMBLY__
|
|
#define MAXMEM 0x3fffffffffffUL
|
|
#define VMALLOC_START 0xffffc20000000000UL
|
|
#define VMALLOC_END 0xffffe1ffffffffffUL
|
|
#define MODULES_VADDR 0xffffffff88000000UL
|
|
#define MODULES_END 0xfffffffffff00000UL
|
|
#define MODULES_LEN (MODULES_END - MODULES_VADDR)
|
|
|
|
#define _PAGE_BIT_PRESENT 0
|
|
#define _PAGE_BIT_RW 1
|
|
#define _PAGE_BIT_USER 2
|
|
#define _PAGE_BIT_PWT 3
|
|
#define _PAGE_BIT_PCD 4
|
|
#define _PAGE_BIT_ACCESSED 5
|
|
#define _PAGE_BIT_DIRTY 6
|
|
#define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */
|
|
#define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
|
|
#define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */
|
|
|
|
#define _PAGE_PRESENT 0x001
|
|
#define _PAGE_RW 0x002
|
|
#define _PAGE_USER 0x004
|
|
#define _PAGE_PWT 0x008
|
|
#define _PAGE_PCD 0x010
|
|
#define _PAGE_ACCESSED 0x020
|
|
#define _PAGE_DIRTY 0x040
|
|
#define _PAGE_PSE 0x080 /* 2MB page */
|
|
#define _PAGE_FILE 0x040 /* nonlinear file mapping, saved PTE; unset:swap */
|
|
#define _PAGE_GLOBAL 0x100 /* Global TLB entry */
|
|
|
|
#define _PAGE_PROTNONE 0x080 /* If not present */
|
|
#define _PAGE_NX (1UL<<_PAGE_BIT_NX)
|
|
|
|
#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_DIRTY)
|
|
#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY)
|
|
|
|
#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
|
|
|
|
#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
|
|
#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
|
|
#define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED)
|
|
#define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
|
|
#define PAGE_COPY PAGE_COPY_NOEXEC
|
|
#define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
|
|
#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
|
|
#define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
|
|
#define __PAGE_KERNEL \
|
|
(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_NX)
|
|
#define __PAGE_KERNEL_EXEC \
|
|
(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED)
|
|
#define __PAGE_KERNEL_NOCACHE \
|
|
(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_PCD | _PAGE_ACCESSED | _PAGE_NX)
|
|
#define __PAGE_KERNEL_RO \
|
|
(_PAGE_PRESENT | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_NX)
|
|
#define __PAGE_KERNEL_VSYSCALL \
|
|
(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
|
|
#define __PAGE_KERNEL_VSYSCALL_NOCACHE \
|
|
(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_PCD)
|
|
#define __PAGE_KERNEL_LARGE \
|
|
(__PAGE_KERNEL | _PAGE_PSE)
|
|
#define __PAGE_KERNEL_LARGE_EXEC \
|
|
(__PAGE_KERNEL_EXEC | _PAGE_PSE)
|
|
|
|
#define MAKE_GLOBAL(x) __pgprot((x) | _PAGE_GLOBAL)
|
|
|
|
#define PAGE_KERNEL MAKE_GLOBAL(__PAGE_KERNEL)
|
|
#define PAGE_KERNEL_EXEC MAKE_GLOBAL(__PAGE_KERNEL_EXEC)
|
|
#define PAGE_KERNEL_RO MAKE_GLOBAL(__PAGE_KERNEL_RO)
|
|
#define PAGE_KERNEL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_NOCACHE)
|
|
#define PAGE_KERNEL_VSYSCALL32 __pgprot(__PAGE_KERNEL_VSYSCALL)
|
|
#define PAGE_KERNEL_VSYSCALL MAKE_GLOBAL(__PAGE_KERNEL_VSYSCALL)
|
|
#define PAGE_KERNEL_LARGE MAKE_GLOBAL(__PAGE_KERNEL_LARGE)
|
|
#define PAGE_KERNEL_VSYSCALL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_VSYSCALL_NOCACHE)
|
|
|
|
/* xwr */
|
|
#define __P000 PAGE_NONE
|
|
#define __P001 PAGE_READONLY
|
|
#define __P010 PAGE_COPY
|
|
#define __P011 PAGE_COPY
|
|
#define __P100 PAGE_READONLY_EXEC
|
|
#define __P101 PAGE_READONLY_EXEC
|
|
#define __P110 PAGE_COPY_EXEC
|
|
#define __P111 PAGE_COPY_EXEC
|
|
|
|
#define __S000 PAGE_NONE
|
|
#define __S001 PAGE_READONLY
|
|
#define __S010 PAGE_SHARED
|
|
#define __S011 PAGE_SHARED
|
|
#define __S100 PAGE_READONLY_EXEC
|
|
#define __S101 PAGE_READONLY_EXEC
|
|
#define __S110 PAGE_SHARED_EXEC
|
|
#define __S111 PAGE_SHARED_EXEC
|
|
|
|
static inline unsigned long pgd_bad(pgd_t pgd)
|
|
{
|
|
return pgd_val(pgd) & ~(PTE_MASK | _KERNPG_TABLE | _PAGE_USER);
|
|
}
|
|
|
|
static inline unsigned long pud_bad(pud_t pud)
|
|
{
|
|
return pud_val(pud) & ~(PTE_MASK | _KERNPG_TABLE | _PAGE_USER);
|
|
}
|
|
|
|
static inline unsigned long pmd_bad(pmd_t pmd)
|
|
{
|
|
return pmd_val(pmd) & ~(PTE_MASK | _KERNPG_TABLE | _PAGE_USER);
|
|
}
|
|
|
|
#define pte_none(x) (!pte_val(x))
|
|
#define pte_present(x) (pte_val(x) & (_PAGE_PRESENT | _PAGE_PROTNONE))
|
|
#define pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
|
|
|
|
#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT)) /* FIXME: is this
|
|
right? */
|
|
#define pte_page(x) pfn_to_page(pte_pfn(x))
|
|
#define pte_pfn(x) ((pte_val(x) & __PHYSICAL_MASK) >> PAGE_SHIFT)
|
|
|
|
static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot)
|
|
{
|
|
pte_t pte;
|
|
pte_val(pte) = (page_nr << PAGE_SHIFT);
|
|
pte_val(pte) |= pgprot_val(pgprot);
|
|
pte_val(pte) &= __supported_pte_mask;
|
|
return pte;
|
|
}
|
|
|
|
/*
|
|
* The following only work if pte_present() is true.
|
|
* Undefined behaviour if not..
|
|
*/
|
|
#define __LARGE_PTE (_PAGE_PSE|_PAGE_PRESENT)
|
|
static inline int pte_user(pte_t pte) { return pte_val(pte) & _PAGE_USER; }
|
|
static inline int pte_read(pte_t pte) { return pte_val(pte) & _PAGE_USER; }
|
|
static inline int pte_exec(pte_t pte) { return !(pte_val(pte) & _PAGE_NX); }
|
|
static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
|
|
static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
|
|
static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_RW; }
|
|
static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; }
|
|
static inline int pte_huge(pte_t pte) { return pte_val(pte) & _PAGE_PSE; }
|
|
|
|
static inline pte_t pte_rdprotect(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_USER)); return pte; }
|
|
static inline pte_t pte_exprotect(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_USER)); return pte; }
|
|
static inline pte_t pte_mkclean(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_DIRTY)); return pte; }
|
|
static inline pte_t pte_mkold(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_ACCESSED)); return pte; }
|
|
static inline pte_t pte_wrprotect(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_RW)); return pte; }
|
|
static inline pte_t pte_mkread(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_USER)); return pte; }
|
|
static inline pte_t pte_mkexec(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_NX)); return pte; }
|
|
static inline pte_t pte_mkdirty(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_DIRTY)); return pte; }
|
|
static inline pte_t pte_mkyoung(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_ACCESSED)); return pte; }
|
|
static inline pte_t pte_mkwrite(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_RW)); return pte; }
|
|
static inline pte_t pte_mkhuge(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_PSE)); return pte; }
|
|
static inline pte_t pte_clrhuge(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_PSE)); return pte; }
|
|
|
|
struct vm_area_struct;
|
|
|
|
static inline int ptep_test_and_clear_dirty(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
|
|
{
|
|
if (!pte_dirty(*ptep))
|
|
return 0;
|
|
return test_and_clear_bit(_PAGE_BIT_DIRTY, &ptep->pte);
|
|
}
|
|
|
|
static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
|
|
{
|
|
if (!pte_young(*ptep))
|
|
return 0;
|
|
return test_and_clear_bit(_PAGE_BIT_ACCESSED, &ptep->pte);
|
|
}
|
|
|
|
static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
|
|
{
|
|
clear_bit(_PAGE_BIT_RW, &ptep->pte);
|
|
}
|
|
|
|
/*
|
|
* Macro to mark a page protection value as "uncacheable".
|
|
*/
|
|
#define pgprot_noncached(prot) (__pgprot(pgprot_val(prot) | _PAGE_PCD | _PAGE_PWT))
|
|
|
|
static inline int pmd_large(pmd_t pte) {
|
|
return (pmd_val(pte) & __LARGE_PTE) == __LARGE_PTE;
|
|
}
|
|
|
|
|
|
/*
|
|
* Conversion functions: convert a page and protection to a page entry,
|
|
* and a page entry and page directory to the page they refer to.
|
|
*/
|
|
|
|
/*
|
|
* Level 4 access.
|
|
*/
|
|
#define pgd_page_vaddr(pgd) ((unsigned long) __va((unsigned long)pgd_val(pgd) & PTE_MASK))
|
|
#define pgd_page(pgd) (pfn_to_page(pgd_val(pgd) >> PAGE_SHIFT))
|
|
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
|
|
#define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr))
|
|
#define pgd_offset_k(address) (init_level4_pgt + pgd_index(address))
|
|
#define pgd_present(pgd) (pgd_val(pgd) & _PAGE_PRESENT)
|
|
#define mk_kernel_pgd(address) ((pgd_t){ (address) | _KERNPG_TABLE })
|
|
|
|
/* PUD - Level3 access */
|
|
/* to find an entry in a page-table-directory. */
|
|
#define pud_page_vaddr(pud) ((unsigned long) __va(pud_val(pud) & PHYSICAL_PAGE_MASK))
|
|
#define pud_page(pud) (pfn_to_page(pud_val(pud) >> PAGE_SHIFT))
|
|
#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
|
|
#define pud_offset(pgd, address) ((pud_t *) pgd_page_vaddr(*(pgd)) + pud_index(address))
|
|
#define pud_present(pud) (pud_val(pud) & _PAGE_PRESENT)
|
|
|
|
/* PMD - Level 2 access */
|
|
#define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_val(pmd) & PTE_MASK))
|
|
#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
|
|
|
|
#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
|
|
#define pmd_offset(dir, address) ((pmd_t *) pud_page_vaddr(*(dir)) + \
|
|
pmd_index(address))
|
|
#define pmd_none(x) (!pmd_val(x))
|
|
#define pmd_present(x) (pmd_val(x) & _PAGE_PRESENT)
|
|
#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
|
|
#define pfn_pmd(nr,prot) (__pmd(((nr) << PAGE_SHIFT) | pgprot_val(prot)))
|
|
#define pmd_pfn(x) ((pmd_val(x) & __PHYSICAL_MASK) >> PAGE_SHIFT)
|
|
|
|
#define pte_to_pgoff(pte) ((pte_val(pte) & PHYSICAL_PAGE_MASK) >> PAGE_SHIFT)
|
|
#define pgoff_to_pte(off) ((pte_t) { ((off) << PAGE_SHIFT) | _PAGE_FILE })
|
|
#define PTE_FILE_MAX_BITS __PHYSICAL_MASK_SHIFT
|
|
|
|
/* PTE - Level 1 access. */
|
|
|
|
/* page, protection -> pte */
|
|
#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
|
|
#define mk_pte_huge(entry) (pte_val(entry) |= _PAGE_PRESENT | _PAGE_PSE)
|
|
|
|
/* physical address -> PTE */
|
|
static inline pte_t mk_pte_phys(unsigned long physpage, pgprot_t pgprot)
|
|
{
|
|
pte_t pte;
|
|
pte_val(pte) = physpage | pgprot_val(pgprot);
|
|
pte_val(pte) &= __supported_pte_mask;
|
|
return pte;
|
|
}
|
|
|
|
/* Change flags of a PTE */
|
|
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
|
|
{
|
|
pte_val(pte) &= _PAGE_CHG_MASK;
|
|
pte_val(pte) |= pgprot_val(newprot);
|
|
pte_val(pte) &= __supported_pte_mask;
|
|
return pte;
|
|
}
|
|
|
|
#define pte_index(address) \
|
|
(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
|
|
#define pte_offset_kernel(dir, address) ((pte_t *) pmd_page_vaddr(*(dir)) + \
|
|
pte_index(address))
|
|
|
|
/* x86-64 always has all page tables mapped. */
|
|
#define pte_offset_map(dir,address) pte_offset_kernel(dir,address)
|
|
#define pte_offset_map_nested(dir,address) pte_offset_kernel(dir,address)
|
|
#define pte_unmap(pte) /* NOP */
|
|
#define pte_unmap_nested(pte) /* NOP */
|
|
|
|
#define update_mmu_cache(vma,address,pte) do { } while (0)
|
|
|
|
/* We only update the dirty/accessed state if we set
|
|
* the dirty bit by hand in the kernel, since the hardware
|
|
* will do the accessed bit for us, and we don't want to
|
|
* race with other CPU's that might be updating the dirty
|
|
* bit at the same time. */
|
|
#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
|
|
#define ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty) \
|
|
do { \
|
|
if (__dirty) { \
|
|
set_pte(__ptep, __entry); \
|
|
flush_tlb_page(__vma, __address); \
|
|
} \
|
|
} while (0)
|
|
|
|
/* Encode and de-code a swap entry */
|
|
#define __swp_type(x) (((x).val >> 1) & 0x3f)
|
|
#define __swp_offset(x) ((x).val >> 8)
|
|
#define __swp_entry(type, offset) ((swp_entry_t) { ((type) << 1) | ((offset) << 8) })
|
|
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
|
|
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
|
|
|
|
extern spinlock_t pgd_lock;
|
|
extern struct page *pgd_list;
|
|
void vmalloc_sync_all(void);
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
|
|
extern int kern_addr_valid(unsigned long addr);
|
|
|
|
#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
|
|
remap_pfn_range(vma, vaddr, pfn, size, prot)
|
|
|
|
#define MK_IOSPACE_PFN(space, pfn) (pfn)
|
|
#define GET_IOSPACE(pfn) 0
|
|
#define GET_PFN(pfn) (pfn)
|
|
|
|
#define HAVE_ARCH_UNMAPPED_AREA
|
|
|
|
#define pgtable_cache_init() do { } while (0)
|
|
#define check_pgt_cache() do { } while (0)
|
|
|
|
#define PAGE_AGP PAGE_KERNEL_NOCACHE
|
|
#define HAVE_PAGE_AGP 1
|
|
|
|
/* fs/proc/kcore.c */
|
|
#define kc_vaddr_to_offset(v) ((v) & __VIRTUAL_MASK)
|
|
#define kc_offset_to_vaddr(o) \
|
|
(((o) & (1UL << (__VIRTUAL_MASK_SHIFT-1))) ? ((o) | (~__VIRTUAL_MASK)) : (o))
|
|
|
|
#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
|
|
#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_DIRTY
|
|
#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
|
|
#define __HAVE_ARCH_PTEP_GET_AND_CLEAR_FULL
|
|
#define __HAVE_ARCH_PTEP_SET_WRPROTECT
|
|
#define __HAVE_ARCH_PTE_SAME
|
|
#include <asm-generic/pgtable.h>
|
|
|
|
#endif /* _X86_64_PGTABLE_H */
|