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mm: consolidate pte_index() and pte_offset_*() definitions 

All architectures define pte_index() as

	(address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)

and all architectures define pte_offset_kernel() as an entry in the array
of PTEs indexed by the pte_index().

For the most architectures the pte_offset_kernel() implementation relies
on the availability of pmd_page_vaddr() that converts a PMD entry value to
the virtual address of the page containing PTEs array.

Let's move x86 definitions of the PTE accessors to the generic place in
<linux/pgtable.h> and then simply drop the respective definitions from the
other architectures.

The architectures that didn't provide pmd_page_vaddr() are updated to have
that defined.

The generic implementation of pte_offset_kernel() can be overridden by an
architecture and alpha makes use of this because it has special ordering
requirements for its version of pte_offset_kernel().

[rppt@linux.ibm.com: v2]
  Link: http://lkml.kernel.org/r/20200514170327.31389-11-rppt@kernel.org
[rppt@linux.ibm.com: update]
  Link: http://lkml.kernel.org/r/20200514170327.31389-12-rppt@kernel.org
[rppt@linux.ibm.com: update]
  Link: http://lkml.kernel.org/r/20200514170327.31389-13-rppt@kernel.org
[akpm@linux-foundation.org: fix x86 warning]
[sfr@canb.auug.org.au: fix powerpc build]
  Link: http://lkml.kernel.org/r/20200607153443.GB738695@linux.ibm.com

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200514170327.31389-10-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mike Rapoport 2020-06-08 21:33:10 -07:00 коммит произвёл Linus Torvalds
Родитель e05c7b1f2b
Коммит 974b9b2c68
55 изменённых файлов: 228 добавлений и 860 удалений
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14
arch/alpha/include/asm/pgtable.h
Просмотреть файл

@ -276,15 +276,6 @@ extern inline pte_t pte_mkwrite(pte_t pte) { pte_val(pte) &= ~_PAGE_FOW; return
extern inline pte_t pte_mkdirty(pte_t pte) { pte_val(pte) |= __DIRTY_BITS; return pte; }
extern inline pte_t pte_mkyoung(pte_t pte) { pte_val(pte) |= __ACCESS_BITS; return pte; }
#define PAGE_DIR_OFFSET(tsk,address) pgd_offset((tsk),(address))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, (address))
/* to find an entry in a page-table-directory. */
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
/*
* The smp_read_barrier_depends() in the following functions are required to
* order the load of *dir (the pointer in the top level page table) with any
@ -305,6 +296,7 @@ extern inline pmd_t * pmd_offset(pud_t * dir, unsigned long address)
smp_read_barrier_depends(); /* see above */
return ret;
}
#define pmd_offset pmd_offset
/* Find an entry in the third-level page table.. */
extern inline pte_t * pte_offset_kernel(pmd_t * dir, unsigned long address)
@ -314,9 +306,7 @@ extern inline pte_t * pte_offset_kernel(pmd_t * dir, unsigned long address)
smp_read_barrier_depends(); /* see above */
return ret;
}
#define pte_offset_map(dir,addr) pte_offset_kernel((dir),(addr))
#define pte_unmap(pte) do { } while (0)
#define pte_offset_kernel pte_offset_kernel
extern pgd_t swapper_pg_dir[1024];

22
arch/arc/include/asm/pgtable.h
Просмотреть файл

@ -248,9 +248,6 @@
extern char empty_zero_page[PAGE_SIZE];
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
#define pte_unmap(pte) do { } while (0)
#define pte_unmap_nested(pte) do { } while (0)
#define set_pte(pteptr, pteval) ((*(pteptr)) = (pteval))
#define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)
@ -282,18 +279,6 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
/* Don't use virt_to_pfn for macros below: could cause truncations for PAE40*/
#define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT)
#define __pte_index(addr) (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
/*
* pte_offset gets a @ptr to PMD entry (PGD in our 2-tier paging system)
* and returns ptr to PTE entry corresponding to @addr
*/
#define pte_offset(dir, addr) ((pte_t *)(pmd_page_vaddr(*dir)) +\
__pte_index(addr))
/* No mapping of Page Tables in high mem etc, so following same as above */
#define pte_offset_kernel(dir, addr) pte_offset(dir, addr)
#define pte_offset_map(dir, addr) pte_offset(dir, addr)
/* Zoo of pte_xxx function */
#define pte_read(pte) (pte_val(pte) & _PAGE_READ)
@ -331,13 +316,6 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
set_pte(ptep, pteval);
}
/*
* All kernel related VM pages are in init's mm.
*/
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
#define pgd_index(addr) ((addr) >> PGDIR_SHIFT)
#define pgd_offset(mm, addr) (((mm)->pgd)+pgd_index(addr))
/*
* Macro to quickly access the PGD entry, utlising the fact that some
* arch may cache the pointer to Page Directory of "current" task

1
arch/arm/include/asm/pgtable-2level.h
Просмотреть файл

@ -187,6 +187,7 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
{
return (pmd_t *)pud;
}
#define pmd_offset pmd_offset
#define pmd_large(pmd) (pmd_val(pmd) & 2)
#define pmd_leaf(pmd) (pmd_val(pmd) & 2)

7
arch/arm/include/asm/pgtable-3level.h
Просмотреть файл

@ -133,13 +133,6 @@ static inline pmd_t *pud_page_vaddr(pud_t pud)
return __va(pud_val(pud) & PHYS_MASK & (s32)PAGE_MASK);
}
/* Find an entry in the second-level page table.. */
#define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
{
return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(addr);
}
#define pmd_bad(pmd) (!(pmd_val(pmd) & 2))
#define copy_pmd(pmdpd,pmdps) \

1
arch/arm/include/asm/pgtable-nommu.h
Просмотреть файл

@ -22,7 +22,6 @@
#define pgd_bad(pgd) (0)
#define pgd_clear(pgdp)
#define kern_addr_valid(addr) (1)
#define pmd_offset(a, b) ((void *)0)
/* FIXME */
/*
* PMD_SHIFT determines the size of the area a second-level page table can map

23
arch/arm/include/asm/pgtable.h
Просмотреть файл

@ -166,14 +166,6 @@ extern struct page *empty_zero_page;
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
/* to find an entry in a page-table-directory */
#define pgd_index(addr) ((addr) >> PGDIR_SHIFT)
#define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(addr) pgd_offset(&init_mm, addr)
#define pmd_none(pmd) (!pmd_val(pmd))
static inline pte_t *pmd_page_vaddr(pmd_t pmd)
@ -183,21 +175,6 @@ static inline pte_t *pmd_page_vaddr(pmd_t pmd)
#define pmd_page(pmd) pfn_to_page(__phys_to_pfn(pmd_val(pmd) & PHYS_MASK))
#ifndef CONFIG_HIGHPTE
#define __pte_map(pmd) pmd_page_vaddr(*(pmd))
#define __pte_unmap(pte) do { } while (0)
#else
#define __pte_map(pmd) (pte_t *)kmap_atomic(pmd_page(*(pmd)))
#define __pte_unmap(pte) kunmap_atomic(pte)
#endif
#define pte_index(addr) (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(pmd,addr) (pmd_page_vaddr(*(pmd)) + pte_index(addr))
#define pte_offset_map(pmd,addr) (__pte_map(pmd) + pte_index(addr))
#define pte_unmap(pte) __pte_unmap(pte)
#define pte_pfn(pte) ((pte_val(pte) & PHYS_MASK) >> PAGE_SHIFT)
#define pfn_pte(pfn,prot) __pte(__pfn_to_phys(pfn) | pgprot_val(prot))

36
arch/arm64/include/asm/pgtable.h
Просмотреть файл

@ -506,15 +506,13 @@ static inline phys_addr_t pmd_page_paddr(pmd_t pmd)
return __pmd_to_phys(pmd);
}
static inline void pte_unmap(pte_t *pte) { }
static inline unsigned long pmd_page_vaddr(pmd_t pmd)
{
return (unsigned long)__va(pmd_page_paddr(pmd));
}
/* Find an entry in the third-level page table. */
#define pte_index(addr) (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_phys(dir,addr) (pmd_page_paddr(READ_ONCE(*(dir))) + pte_index(addr) * sizeof(pte_t))
#define pte_offset_kernel(dir,addr) ((pte_t *)__va(pte_offset_phys((dir), (addr))))
#define pte_offset_map(dir,addr) pte_offset_kernel((dir), (addr))
#define pte_set_fixmap(addr) ((pte_t *)set_fixmap_offset(FIX_PTE, addr))
#define pte_set_fixmap_offset(pmd, addr) pte_set_fixmap(pte_offset_phys(pmd, addr))
@ -568,11 +566,13 @@ static inline phys_addr_t pud_page_paddr(pud_t pud)
return __pud_to_phys(pud);
}
/* Find an entry in the second-level page table. */
#define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
static inline unsigned long pud_page_vaddr(pud_t pud)
{
return (unsigned long)__va(pud_page_paddr(pud));
}
/* Find an entry in the second-level page table. */
#define pmd_offset_phys(dir, addr) (pud_page_paddr(READ_ONCE(*(dir))) + pmd_index(addr) * sizeof(pmd_t))
#define pmd_offset(dir, addr) ((pmd_t *)__va(pmd_offset_phys((dir), (addr))))
#define pmd_set_fixmap(addr) ((pmd_t *)set_fixmap_offset(FIX_PMD, addr))
#define pmd_set_fixmap_offset(pud, addr) pmd_set_fixmap(pmd_offset_phys(pud, addr))
@ -626,11 +626,13 @@ static inline phys_addr_t p4d_page_paddr(p4d_t p4d)
return __p4d_to_phys(p4d);
}
/* Find an entry in the frst-level page table. */
#define pud_index(addr) (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))
static inline unsigned long p4d_page_vaddr(p4d_t p4d)
{
return (unsigned long)__va(p4d_page_paddr(p4d));
}
/* Find an entry in the frst-level page table. */
#define pud_offset_phys(dir, addr) (p4d_page_paddr(READ_ONCE(*(dir))) + pud_index(addr) * sizeof(pud_t))
#define pud_offset(dir, addr) ((pud_t *)__va(pud_offset_phys((dir), (addr))))
#define pud_set_fixmap(addr) ((pud_t *)set_fixmap_offset(FIX_PUD, addr))
#define pud_set_fixmap_offset(p4d, addr) pud_set_fixmap(pud_offset_phys(p4d, addr))
@ -657,16 +659,6 @@ static inline phys_addr_t p4d_page_paddr(p4d_t p4d)
#define pgd_ERROR(pgd) __pgd_error(__FILE__, __LINE__, pgd_val(pgd))
/* to find an entry in a page-table-directory */
#define pgd_index(addr) (((addr) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
#define pgd_offset_raw(pgd, addr) ((pgd) + pgd_index(addr))
#define pgd_offset(mm, addr) (pgd_offset_raw((mm)->pgd, (addr)))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(addr) pgd_offset(&init_mm, addr)
#define pgd_set_fixmap(addr) ((pgd_t *)set_fixmap_offset(FIX_PGD, addr))
#define pgd_clear_fixmap() clear_fixmap(FIX_PGD)

4
arch/arm64/kernel/hibernate.c
Просмотреть файл

@ -188,7 +188,7 @@ static int trans_pgd_map_page(pgd_t *trans_pgd, void *page,
pmd_t *pmdp;
pte_t *ptep;
pgdp = pgd_offset_raw(trans_pgd, dst_addr);
pgdp = pgd_offset_pgd(trans_pgd, dst_addr);
if (pgd_none(READ_ONCE(*pgdp))) {
pudp = (void *)get_safe_page(GFP_ATOMIC);
if (!pudp)
@ -490,7 +490,7 @@ static int copy_page_tables(pgd_t *dst_pgdp, unsigned long start,
unsigned long addr = start;
pgd_t *src_pgdp = pgd_offset_k(start);
dst_pgdp = pgd_offset_raw(dst_pgdp, start);
dst_pgdp = pgd_offset_pgd(dst_pgdp, start);
do {
next = pgd_addr_end(addr, end);
if (pgd_none(READ_ONCE(*src_pgdp)))

2
arch/arm64/mm/kasan_init.c
Просмотреть файл

@ -190,7 +190,7 @@ void __init kasan_copy_shadow(pgd_t *pgdir)
pgdp = pgd_offset_k(KASAN_SHADOW_START);
pgdp_end = pgd_offset_k(KASAN_SHADOW_END);
pgdp_new = pgd_offset_raw(pgdir, KASAN_SHADOW_START);
pgdp_new = pgd_offset_pgd(pgdir, KASAN_SHADOW_START);
do {
set_pgd(pgdp_new, READ_ONCE(*pgdp));
} while (pgdp++, pgdp_new++, pgdp != pgdp_end);

8
arch/arm64/mm/mmu.c
Просмотреть файл

@ -341,7 +341,7 @@ static void __create_pgd_mapping(pgd_t *pgdir, phys_addr_t phys,
int flags)
{
unsigned long addr, end, next;
pgd_t *pgdp = pgd_offset_raw(pgdir, virt);
pgd_t *pgdp = pgd_offset_pgd(pgdir, virt);
/*
* If the virtual and physical address don't have the same offset
@ -663,13 +663,13 @@ static void __init map_kernel(pgd_t *pgdp)
&vmlinux_initdata, 0, VM_NO_GUARD);
map_kernel_segment(pgdp, _data, _end, PAGE_KERNEL, &vmlinux_data, 0, 0);
if (!READ_ONCE(pgd_val(*pgd_offset_raw(pgdp, FIXADDR_START)))) {
if (!READ_ONCE(pgd_val(*pgd_offset_pgd(pgdp, FIXADDR_START)))) {
/*
* The fixmap falls in a separate pgd to the kernel, and doesn't
* live in the carveout for the swapper_pg_dir. We can simply
* re-use the existing dir for the fixmap.
*/
set_pgd(pgd_offset_raw(pgdp, FIXADDR_START),
set_pgd(pgd_offset_pgd(pgdp, FIXADDR_START),
READ_ONCE(*pgd_offset_k(FIXADDR_START)));
} else if (CONFIG_PGTABLE_LEVELS > 3) {
pgd_t *bm_pgdp;
@ -682,7 +682,7 @@ static void __init map_kernel(pgd_t *pgdp)
* entry instead.
*/
BUG_ON(!IS_ENABLED(CONFIG_ARM64_16K_PAGES));
bm_pgdp = pgd_offset_raw(pgdp, FIXADDR_START);
bm_pgdp = pgd_offset_pgd(pgdp, FIXADDR_START);
bm_p4dp = p4d_offset(bm_pgdp, FIXADDR_START);
bm_pudp = pud_set_fixmap_offset(bm_p4dp, FIXADDR_START);
pud_populate(&init_mm, bm_pudp, lm_alias(bm_pmd));

1
arch/c6x/include/asm/pgtable.h
Просмотреть файл

@ -26,7 +26,6 @@
#define pgd_clear(pgdp)
#define kern_addr_valid(addr) (1)
#define pmd_offset(a, b) ((void *)0)
#define pmd_none(x) (!pmd_val(x))
#define pmd_present(x) (pmd_val(x))
#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)

30
arch/csky/include/asm/pgtable.h
Просмотреть файл

@ -32,13 +32,6 @@
#define pgd_ERROR(e) \
pr_err("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
/* Find an entry in the third-level page table.. */
#define __pte_offset_t(address) \
(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(dir, address) \
(pmd_page_vaddr(*(dir)) + __pte_offset_t(address))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset_t(address))
#define pmd_page(pmd) (pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
#define pte_clear(mm, addr, ptep) set_pte((ptep), \
(((unsigned int) addr & PAGE_OFFSET) ? __pte(_PAGE_GLOBAL) : __pte(0)))
@ -54,8 +47,6 @@
#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED | \
_CACHE_MASK)
#define pte_unmap(pte) ((void)(pte))
#define __swp_type(x) (((x).val >> 4) & 0xff)
#define __swp_offset(x) ((x).val >> 12)
#define __swp_entry(type, offset) ((swp_entry_t) {((type) << 4) | \
@ -229,14 +220,6 @@ static inline pte_t pte_mkyoung(pte_t pte)
return pte;
}
#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
#define pgd_index(address) ((address) >> PGDIR_SHIFT)
#define __HAVE_PHYS_MEM_ACCESS_PROT
struct file;
extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
@ -280,19 +263,6 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
(pgprot_val(newprot)));
}
/* to find an entry in a page-table-directory */
static inline pgd_t *pgd_offset(struct mm_struct *mm, unsigned long address)
{
return mm->pgd + pgd_index(address);
}
/* Find an entry in the third-level page table.. */
static inline pte_t *pte_offset(pmd_t *dir, unsigned long address)
{
return (pte_t *) (pmd_page_vaddr(*dir)) +
((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1));
}
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
extern void paging_init(void);

52
arch/hexagon/include/asm/pgtable.h
Просмотреть файл

@ -206,33 +206,6 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr,
pte_val(*ptep) = _NULL_PTE;
}
#ifdef NEED_PMD_INDEX_DESPITE_BEING_2_LEVEL
/**
* pmd_index - returns the index of the entry in the PMD page
* which would control the given virtual address
*/
#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
#endif
/**
* pgd_index - returns the index of the entry in the PGD page
* which would control the given virtual address
*
* This returns the *index* for the address in the pgd_t
*/
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
/*
* pgd_offset - find an offset in a page-table-directory
*/
#define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr))
/*
* pgd_offset_k - get kernel (init_mm) pgd entry pointer for addr
*/
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
/**
* pmd_none - check if pmd_entry is mapped
* @pmd_entry: pmd entry
@ -403,31 +376,14 @@ static inline int pte_exec(pte_t pte)
*/
#define set_pte_at(mm, addr, ptep, pte) set_pte(ptep, pte)
/*
* May need to invoke the virtual machine as well...
*/
#define pte_unmap(pte) do { } while (0)
#define pte_unmap_nested(pte) do { } while (0)
/*
* pte_offset_map - returns the linear address of the page table entry
* corresponding to an address
*/
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
#define pte_offset_map_nested(pmd, addr) pte_offset_map(pmd, addr)
/* pte_offset_kernel - kernel version of pte_offset */
#define pte_offset_kernel(dir, address) \
((pte_t *) (unsigned long) __va(pmd_val(*dir) & PAGE_MASK) \
+ __pte_offset(address))
static inline unsigned long pmd_page_vaddr(pmd_t pmd)
{
return (unsigned long)__va(pmd_val(pmd) & PAGE_MASK);
}
/* ZERO_PAGE - returns the globally shared zero page */
#define ZERO_PAGE(vaddr) (virt_to_page(&empty_zero_page))
#define __pte_offset(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
/*
* Swap/file PTE definitions. If _PAGE_PRESENT is zero, the rest of the PTE is
* interpreted as swap information. The remaining free bits are interpreted as

33
arch/ia64/include/asm/pgtable.h
Просмотреть файл

@ -364,44 +364,13 @@ pgd_index (unsigned long address)
return (region << (PAGE_SHIFT - 6)) | l1index;
}
/* The offset in the 1-level directory is given by the 3 region bits
(61..63) and the level-1 bits. */
static inline pgd_t*
pgd_offset (const struct mm_struct *mm, unsigned long address)
{
return mm->pgd + pgd_index(address);
}
/* In the kernel's mapped region we completely ignore the region number
(since we know it's in region number 5). */
#define pgd_offset_k(addr) \
(init_mm.pgd + (((addr) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1)))
#define pgd_index pgd_index
/* Look up a pgd entry in the gate area. On IA-64, the gate-area
resides in the kernel-mapped segment, hence we use pgd_offset_k()
here. */
#define pgd_offset_gate(mm, addr) pgd_offset_k(addr)
#if CONFIG_PGTABLE_LEVELS == 4
/* Find an entry in the second-level page table.. */
#define pud_offset(dir,addr) \
((pud_t *) p4d_page_vaddr(*(dir)) + (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)))
#endif
/* Find an entry in the third-level page table.. */
#define pmd_offset(dir,addr) \
((pmd_t *) pud_page_vaddr(*(dir)) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)))
/*
* Find an entry in the third-level page table. This looks more complicated than it
* should be because some platforms place page tables in high memory.
*/
#define pte_index(addr) (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(dir,addr) ((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(addr))
#define pte_offset_map(dir,addr) pte_offset_kernel(dir, addr)
#define pte_unmap(pte) do { } while (0)
/* atomic versions of the some PTE manipulations: */
static inline int

23
arch/m68k/include/asm/mcf_pgtable.h
Просмотреть файл

@ -170,7 +170,7 @@ static inline void pgd_set(pgd_t *pgdp, pmd_t *pmdp)
}
#define __pte_page(pte) ((unsigned long) (pte_val(pte) & PAGE_MASK))
#define __pmd_page(pmd) ((unsigned long) (pmd_val(pmd)))
#define pmd_page_vaddr(pmd) ((unsigned long) (pmd_val(pmd)))
static inline int pte_none(pte_t pte)
{
@ -310,24 +310,6 @@ static inline pte_t pte_mkcache(pte_t pte)
#define swapper_pg_dir kernel_pg_dir
extern pgd_t kernel_pg_dir[PTRS_PER_PGD];
/*
* Find an entry in a pagetable directory.
*/
#define pgd_index(address) ((address) >> PGDIR_SHIFT)
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
/*
* Find an entry in a kernel pagetable directory.
*/
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
/*
* Find an entry in the third-level pagetable.
*/
#define __pte_offset(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(dir, address) \
((pte_t *) __pmd_page(*(dir)) + __pte_offset(address))
/*
* Encode and de-code a swap entry (must be !pte_none(e) && !pte_present(e))
*/
@ -340,9 +322,6 @@ extern pgd_t kernel_pg_dir[PTRS_PER_PGD];
#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
#define pte_offset_map(pmdp, addr) ((pte_t *)__pmd_page(*pmdp) + \
__pte_offset(addr))
#define pte_unmap(pte) ((void) 0)
#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
#define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT)

2
arch/m68k/include/asm/motorola_pgalloc.h
Просмотреть файл

@ -88,7 +88,7 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page
{
pmd_set(pmd, page);
}
#define pmd_pgtable(pmd) ((pgtable_t)__pmd_page(pmd))
#define pmd_pgtable(pmd) ((pgtable_t)pmd_page_vaddr(pmd))
static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
{

34
arch/m68k/include/asm/motorola_pgtable.h
Просмотреть файл

@ -128,7 +128,7 @@ static inline void pud_set(pud_t *pudp, pmd_t *pmdp)
}
#define __pte_page(pte) ((unsigned long)__va(pte_val(pte) & PAGE_MASK))
#define __pmd_page(pmd) ((unsigned long)__va(pmd_val(pmd) & _TABLE_MASK))
#define pmd_page_vaddr(pmd) ((unsigned long)__va(pmd_val(pmd) & _TABLE_MASK))
#define pud_page_vaddr(pud) ((unsigned long)__va(pud_val(pud) & _TABLE_MASK))
@ -192,41 +192,9 @@ static inline pte_t pte_mkcache(pte_t pte)
return pte;
}
#define PAGE_DIR_OFFSET(tsk,address) pgd_offset((tsk),(address))
#define pgd_index(address) ((address) >> PGDIR_SHIFT)
/* to find an entry in a page-table-directory */
static inline pgd_t *pgd_offset(const struct mm_struct *mm,
unsigned long address)
{
return mm->pgd + pgd_index(address);
}
#define swapper_pg_dir kernel_pg_dir
extern pgd_t kernel_pg_dir[128];
static inline pgd_t *pgd_offset_k(unsigned long address)
{
return kernel_pg_dir + (address >> PGDIR_SHIFT);
}
/* Find an entry in the second-level page table.. */
static inline pmd_t *pmd_offset(pud_t *dir, unsigned long address)
{
return (pmd_t *)pud_page_vaddr(*dir) + ((address >> PMD_SHIFT) & (PTRS_PER_PMD-1));
}
/* Find an entry in the third-level page table.. */
static inline pte_t *pte_offset_kernel(pmd_t *pmdp, unsigned long address)
{
return (pte_t *)__pmd_page(*pmdp) + ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1));
}
#define pte_offset_map(pmdp,address) ((pte_t *)__pmd_page(*pmdp) + (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
#define pte_unmap(pte) ((void)0)
/* Encode and de-code a swap entry (must be !pte_none(e) && !pte_present(e)) */
#define __swp_type(x) (((x).val >> 4) & 0xff)
#define __swp_offset(x) ((x).val >> 12)

24
arch/m68k/include/asm/sun3_pgtable.h
Просмотреть файл

@ -112,8 +112,11 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
#define __pte_page(pte) \
((unsigned long) __va ((pte_val (pte) & SUN3_PAGE_PGNUM_MASK) << PAGE_SHIFT))
#define __pmd_page(pmd) \
((unsigned long) __va (pmd_val (pmd) & PAGE_MASK))
static inline unsigned long pmd_page_vaddr(pmd_t pmd)
{
return (unsigned long)__va(pmd_val(pmd) & PAGE_MASK);
}
static inline int pte_none (pte_t pte) { return !pte_val (pte); }
static inline int pte_present (pte_t pte) { return pte_val (pte) & SUN3_PAGE_VALID; }
@ -127,7 +130,7 @@ static inline void pte_clear (struct mm_struct *mm, unsigned long addr, pte_t *p
({ pte_t __pte; pte_val(__pte) = pfn | pgprot_val(pgprot); __pte; })
#define pte_page(pte) virt_to_page(__pte_page(pte))
#define pmd_page(pmd) virt_to_page(__pmd_page(pmd))
#define pmd_page(pmd) virt_to_page(pmd_page_vaddr(pmd))
static inline int pmd_none2 (pmd_t *pmd) { return !pmd_val (*pmd); }
@ -171,21 +174,6 @@ static inline pte_t pte_mkcache(pte_t pte) { return pte; }
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
extern pgd_t kernel_pg_dir[PTRS_PER_PGD];
/* Find an entry in a pagetable directory. */
#define pgd_index(address) ((address) >> PGDIR_SHIFT)
#define pgd_offset(mm, address) \
((mm)->pgd + pgd_index(address))
/* Find an entry in a kernel pagetable directory. */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
/* Find an entry in the third-level pagetable. */
#define pte_index(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE-1))
#define pte_offset_kernel(pmd, address) ((pte_t *) __pmd_page(*pmd) + pte_index(address))
#define pte_offset_map(pmd, address) ((pte_t *)page_address(pmd_page(*pmd)) + pte_index(address))
#define pte_unmap(pte) do { } while (0)
/* Macros to (de)construct the fake PTEs representing swap pages. */
#define __swp_type(x) ((x).val & 0x7F)
#define __swp_offset(x) (((x).val) >> 7)

2
arch/m68k/mm/init.c
Просмотреть файл

@ -141,7 +141,7 @@ static inline void init_pointer_tables(void)
if (!pmd_present(*pmd))
continue;
pte_dir = (pte_t *)__pmd_page(*pmd);
pte_dir = (pte_t *)pmd_page_vaddr(*pmd);
init_pointer_table(pte_dir, TABLE_PTE);
}
}

21
arch/microblaze/include/asm/pgtable.h
Просмотреть файл

@ -21,7 +21,6 @@ extern int mem_init_done;
#define pgd_bad(pgd) (0)
#define pgd_clear(pgdp)
#define kern_addr_valid(addr) (1)
#define pmd_offset(a, b) ((void *) 0)
#define PAGE_NONE __pgprot(0) /* these mean nothing to non MMU */
#define PAGE_SHARED __pgprot(0) /* these mean nothing to non MMU */
@ -438,27 +437,15 @@ static inline void ptep_mkdirty(struct mm_struct *mm,
/* Convert pmd entry to page */
/* our pmd entry is an effective address of pte table*/
/* returns effective address of the pmd entry*/
#define pmd_page_kernel(pmd) ((unsigned long) (pmd_val(pmd) & PAGE_MASK))
static inline unsigned long pmd_page_vaddr(pmd_t pmd)
{
return ((unsigned long) (pmd_val(pmd) & PAGE_MASK));
}
/* returns struct *page of the pmd entry*/
#define pmd_page(pmd) (pfn_to_page(__pa(pmd_val(pmd)) >> PAGE_SHIFT))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
/* to find an entry in a page-table-directory */
#define pgd_index(address) ((address) >> PGDIR_SHIFT)
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
/* Find an entry in the third-level page table.. */
#define pte_index(address) \
(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(dir, addr) \
((pte_t *) pmd_page_kernel(*(dir)) + pte_index(addr))
#define pte_offset_map(dir, addr) \
((pte_t *) kmap_atomic(pmd_page(*(dir))) + pte_index(addr))
#define pte_unmap(pte) kunmap_atomic(pte)
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];

22
arch/mips/include/asm/pgtable-32.h
Просмотреть файл

@ -195,28 +195,6 @@ static inline pte_t pfn_pte(unsigned long pfn, pgprot_t prot)
#define pte_page(x) pfn_to_page(pte_pfn(x))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
/* to find an entry in a page-table-directory */
#define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr))
/* Find an entry in the third-level page table.. */
#define __pte_offset(address) \
(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset(dir, address) \
((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
#define pte_offset_kernel(dir, address) \
((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
#define pte_unmap(pte) ((void)(pte))
#if defined(CONFIG_CPU_R3K_TLB)
/* Swap entries must have VALID bit cleared. */

32
arch/mips/include/asm/pgtable-64.h
Просмотреть файл

@ -172,8 +172,6 @@
extern pte_t invalid_pte_table[PTRS_PER_PTE];
#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))
#ifndef __PAGETABLE_PUD_FOLDED
/*
* For 4-level pagetables we defines these ourselves, for 3-level the
@ -222,11 +220,6 @@ static inline unsigned long p4d_page_vaddr(p4d_t p4d)
#define p4d_index(address) (((address) >> P4D_SHIFT) & (PTRS_PER_P4D - 1))
static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address)
{
return (pud_t *)p4d_page_vaddr(*p4d) + pud_index(address);
}
static inline void set_p4d(p4d_t *p4d, p4d_t p4dval)
{
*p4d = p4dval;
@ -320,15 +313,6 @@ static inline void pud_clear(pud_t *pudp)
#define pfn_pmd(pfn, prot) __pmd(((pfn) << _PFN_SHIFT) | pgprot_val(prot))
#endif
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
/* to find an entry in a page-table-directory */
#define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr))
#ifndef __PAGETABLE_PMD_FOLDED
static inline unsigned long pud_page_vaddr(pud_t pud)
{
@ -337,24 +321,8 @@ static inline unsigned long pud_page_vaddr(pud_t pud)
#define pud_phys(pud) virt_to_phys((void *)pud_val(pud))
#define pud_page(pud) (pfn_to_page(pud_phys(pud) >> PAGE_SHIFT))
/* Find an entry in the second-level page table.. */
static inline pmd_t *pmd_offset(pud_t * pud, unsigned long address)
{
return (pmd_t *) pud_page_vaddr(*pud) + pmd_index(address);
}
#endif
/* Find an entry in the third-level page table.. */
#define __pte_offset(address) \
(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset(dir, address) \
((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
#define pte_offset_kernel(dir, address) \
((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
#define pte_unmap(pte) ((void)(pte))
/*
* Initialize a new pgd / pmd table with invalid pointers.
*/

20
arch/mips/kvm/mmu.c
Просмотреть файл

@ -168,7 +168,7 @@ static pte_t *kvm_mips_walk_pgd(pgd_t *pgd, struct kvm_mmu_memory_cache *cache,
clear_page(new_pte);
pmd_populate_kernel(NULL, pmd, new_pte);
}
return pte_offset(pmd, addr);
return pte_offset_kernel(pmd, addr);
}
/* Caller must hold kvm->mm_lock */
@ -187,8 +187,8 @@ static pte_t *kvm_mips_pte_for_gpa(struct kvm *kvm,
static bool kvm_mips_flush_gpa_pte(pte_t *pte, unsigned long start_gpa,
unsigned long end_gpa)
{
int i_min = __pte_offset(start_gpa);
int i_max = __pte_offset(end_gpa);
int i_min = pte_index(start_gpa);
int i_max = pte_index(end_gpa);
bool safe_to_remove = (i_min == 0 && i_max == PTRS_PER_PTE - 1);
int i;
@ -215,7 +215,7 @@ static bool kvm_mips_flush_gpa_pmd(pmd_t *pmd, unsigned long start_gpa,
if (!pmd_present(pmd[i]))
continue;
pte = pte_offset(pmd + i, 0);
pte = pte_offset_kernel(pmd + i, 0);
if (i == i_max)
end = end_gpa;
@ -312,8 +312,8 @@ static int kvm_mips_##name##_pte(pte_t *pte, unsigned long start, \
unsigned long end) \
{ \
int ret = 0; \
int i_min = __pte_offset(start); \
int i_max = __pte_offset(end); \
int i_min = pte_index(start); \
int i_max = pte_index(end); \
int i; \
pte_t old, new; \
\
@ -346,7 +346,7 @@ static int kvm_mips_##name##_pmd(pmd_t *pmd, unsigned long start, \
if (!pmd_present(pmd[i])) \
continue; \
\
pte = pte_offset(pmd + i, 0); \
pte = pte_offset_kernel(pmd + i, 0); \
if (i == i_max) \
cur_end = end; \
\
@ -842,8 +842,8 @@ void kvm_trap_emul_invalidate_gva(struct kvm_vcpu *vcpu, unsigned long addr,
static bool kvm_mips_flush_gva_pte(pte_t *pte, unsigned long start_gva,
unsigned long end_gva)
{
int i_min = __pte_offset(start_gva);
int i_max = __pte_offset(end_gva);
int i_min = pte_index(start_gva);
int i_max = pte_index(end_gva);
bool safe_to_remove = (i_min == 0 && i_max == PTRS_PER_PTE - 1);
int i;
@ -877,7 +877,7 @@ static bool kvm_mips_flush_gva_pmd(pmd_t *pmd, unsigned long start_gva,
if (!pmd_present(pmd[i]))
continue;
pte = pte_offset(pmd + i, 0);
pte = pte_offset_kernel(pmd + i, 0);
if (i == i_max)
end = end_gva;

2
arch/mips/kvm/trap_emul.c
Просмотреть файл

@ -594,7 +594,7 @@ static void kvm_mips_emul_free_gva_pt(pgd_t *pgd)
pmd_va = pud_va | (k << PMD_SHIFT);
if (pmd_va >= end)
break;
pte = pte_offset(pmd + k, 0);
pte = pte_offset_kernel(pmd + k, 0);
pte_free_kernel(NULL, pte);
}
pmd_free(NULL, pmd);

18
arch/nds32/include/asm/pgtable.h
Просмотреть файл

@ -186,14 +186,10 @@ extern void paging_init(void);
#define pte_clear(mm,addr,ptep) set_pte_at((mm),(addr),(ptep), __pte(0))
#define pte_page(pte) (pfn_to_page(pte_pfn(pte)))
#define pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(dir, address) ((pte_t *)pmd_page_kernel(*(dir)) + pte_index(address))
#define pte_offset_map(dir, address) ((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
#define pmd_page_kernel(pmd) ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
#define pte_unmap(pte) do { } while (0)
#define pte_unmap_nested(pte) do { } while (0)
static unsigned long pmd_page_vaddr(pmd_t pmd)
{
return ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK));
}
#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
/*
@ -344,12 +340,6 @@ static inline pmd_t __mk_pmd(pte_t * ptep, unsigned long prot)
*
*/
/* to find an entry in a page-table-directory */
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(addr) pgd_offset(&init_mm, addr)
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
{
const unsigned long mask = 0xfff;

22
arch/nios2/include/asm/pgtable.h
Просмотреть файл

@ -102,10 +102,6 @@ static inline void set_pmd(pmd_t *pmdptr, pmd_t pmdval)
*pmdptr = pmdval;
}
/* to find an entry in a page-table-directory */
#define pgd_index(addr) (((addr) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
#define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr))
static inline int pte_write(pte_t pte) \
{ return pte_val(pte) & _PAGE_WRITE; }
static inline int pte_dirty(pte_t pte) \
@ -236,27 +232,17 @@ static inline void pte_clear(struct mm_struct *mm,
*/
#define mk_pte(page, prot) (pfn_pte(page_to_pfn(page), prot))
#define pte_unmap(pte) do { } while (0)
/*
* Conversion functions: convert a page and protection to a page entry,
* and a page entry and page directory to the page they refer to.
*/
#define pmd_phys(pmd) virt_to_phys((void *)pmd_val(pmd))
#define pmd_page(pmd) (pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
#define pmd_page_vaddr(pmd) pmd_val(pmd)
#define pte_offset_map(dir, addr) \
((pte_t *) page_address(pmd_page(*dir)) + \
(((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(addr) pgd_offset(&init_mm, addr)
/* Get the address to the PTE for a vaddr in specific directory */
#define pte_offset_kernel(dir, addr) \
((pte_t *) pmd_page_vaddr(*(dir)) + \
(((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
static inline unsigned long pmd_page_vaddr(pmd_t pmd)
{
return pmd_val(pmd);
}
#define pte_ERROR(e) \
pr_err("%s:%d: bad pte %08lx.\n", \

31
arch/openrisc/include/asm/pgtable.h
Просмотреть файл

@ -363,38 +363,15 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
}
#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
#define pmd_page_kernel(pmd) ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
/* to find an entry in a page-table-directory. */
#define pgd_index(address) ((address >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
#define __pgd_offset(address) pgd_index(address)
#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
static inline unsigned long pmd_page_vaddr(pmd_t pmd)
{
return ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK));
}
#define __pmd_offset(address) \
(((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
/*
* the pte page can be thought of an array like this: pte_t[PTRS_PER_PTE]
*
* this macro returns the index of the entry in the pte page which would
* control the given virtual address
*/
#define __pte_offset(address) \
(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(dir, address) \
((pte_t *) pmd_page_kernel(*(dir)) + __pte_offset(address))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
#define pte_offset_map_nested(dir, address) \
pte_offset_map(dir, address)
#define pte_unmap(pte) do { } while (0)
#define pte_unmap_nested(pte) do { } while (0)
#define pte_pfn(x) ((unsigned long)(((x).pte)) >> PAGE_SHIFT)
#define pfn_pte(pfn, prot) __pte((((pfn) << PAGE_SHIFT)) | pgprot_val(prot))

32
arch/parisc/include/asm/pgtable.h
Просмотреть файл

@ -427,40 +427,16 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
#define pte_page(pte) (pfn_to_page(pte_pfn(pte)))
#define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_address(pmd)))
static inline unsigned long pmd_page_vaddr(pmd_t pmd)
{
return ((unsigned long) __va(pmd_address(pmd)));
}
#define __pmd_page(pmd) ((unsigned long) __va(pmd_address(pmd)))
#define pmd_page(pmd) virt_to_page((void *)__pmd_page(pmd))
#define pgd_index(address) ((address) >> PGDIR_SHIFT)
/* to find an entry in a page-table-directory */
#define pgd_offset(mm, address) \
((mm)->pgd + ((address) >> PGDIR_SHIFT))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
/* Find an entry in the second-level page table.. */
#if CONFIG_PGTABLE_LEVELS == 3
#define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
#define pmd_offset(dir,address) \
((pmd_t *) pud_page_vaddr(*(dir)) + pmd_index(address))
#else
#define pmd_offset(dir,addr) ((pmd_t *) dir)
#endif
/* Find an entry in the third-level page table.. */
#define pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE-1))
#define pte_offset_kernel(pmd, address) \
((pte_t *) pmd_page_vaddr(*(pmd)) + pte_index(address))
#define pte_offset_map(pmd, address) pte_offset_kernel(pmd, address)
#define pte_unmap(pte) do { } while (0)
#define pte_unmap(pte) do { } while (0)
#define pte_unmap_nested(pte) do { } while (0)
extern void paging_init (void);
/* Used for deferring calls to flush_dcache_page() */

2
arch/parisc/kernel/pci-dma.c
Просмотреть файл

@ -201,7 +201,7 @@ static inline void unmap_uncached_pmd(pgd_t * dir, unsigned long vaddr,
pgd_clear(dir);
return;
}
pmd = pmd_offset(dir, vaddr);
pmd = pmd_offset(pud_offset(p4d_offset(dir, vaddr), vaddr), vaddr);
vaddr &= ~PGDIR_MASK;
end = vaddr + size;
if (end > PGDIR_SIZE)

20
arch/powerpc/include/asm/book3s/32/pgtable.h
Просмотреть файл

@ -112,6 +112,9 @@ static inline bool pte_user(pte_t pte)
#define PMD_TABLE_SIZE 0
#define PUD_TABLE_SIZE 0
#define PGD_TABLE_SIZE (sizeof(pgd_t) << PGD_INDEX_SIZE)
/* Bits to mask out from a PMD to get to the PTE page */
#define PMD_MASKED_BITS (PTE_TABLE_SIZE - 1)
#endif /* __ASSEMBLY__ */
#define PTRS_PER_PTE (1 << PTE_INDEX_SIZE)
@ -332,26 +335,9 @@ static inline void __ptep_set_access_flags(struct vm_area_struct *vma,
#define __HAVE_ARCH_PTE_SAME
#define pte_same(A,B) (((pte_val(A) ^ pte_val(B)) & ~_PAGE_HASHPTE) == 0)
#define pmd_page_vaddr(pmd) \
((unsigned long)__va(pmd_val(pmd) & ~(PTE_TABLE_SIZE - 1)))
#define pmd_page(pmd) \
pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT)
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
/* to find an entry in a page-table-directory */
#define pgd_index(address) ((address) >> PGDIR_SHIFT)
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
/* Find an entry in the third-level page table.. */
#define pte_index(address) \
(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(dir, addr) \
((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(addr))
#define pte_offset_map(dir, addr) pte_offset_kernel((dir), (addr))
static inline void pte_unmap(pte_t *pte) { }
/*
* Encode and decode a swap entry.
* Note that the bits we use in a PTE for representing a swap entry

43
arch/powerpc/include/asm/book3s/64/pgtable.h
Просмотреть файл

@ -1005,52 +1005,9 @@ extern struct page *p4d_page(p4d_t p4d);
/* Pointers in the page table tree are physical addresses */
#define __pgtable_ptr_val(ptr) __pa(ptr)
#define pmd_page_vaddr(pmd) __va(pmd_val(pmd) & ~PMD_MASKED_BITS)
#define pud_page_vaddr(pud) __va(pud_val(pud) & ~PUD_MASKED_BITS)
#define p4d_page_vaddr(p4d) __va(p4d_val(p4d) & ~P4D_MASKED_BITS)
static inline unsigned long pgd_index(unsigned long address)
{
return (address >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1);
}
static inline unsigned long pud_index(unsigned long address)
{
return (address >> PUD_SHIFT) & (PTRS_PER_PUD - 1);
}
static inline unsigned long pmd_index(unsigned long address)
{
return (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
}
static inline unsigned long pte_index(unsigned long address)
{
return (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1);
}
/*
* Find an entry in a page-table-directory. We combine the address region
* (the high order N bits) and the pgd portion of the address.
*/
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
#define pud_offset(p4dp, addr) \
(((pud_t *) p4d_page_vaddr(*(p4dp))) + pud_index(addr))
#define pmd_offset(pudp,addr) \
(((pmd_t *) pud_page_vaddr(*(pudp))) + pmd_index(addr))
#define pte_offset_kernel(dir,addr) \
(((pte_t *) pmd_page_vaddr(*(dir))) + pte_index(addr))
#define pte_offset_map(dir,addr) pte_offset_kernel((dir), (addr))
static inline void pte_unmap(pte_t *pte) { }
/* to find an entry in a kernel page-table-directory */
/* This now only contains the vmalloc pages */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
#define pte_ERROR(e) \
pr_err("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
#define pmd_ERROR(e) \

17
arch/powerpc/include/asm/nohash/32/pgtable.h
Просмотреть файл

@ -28,6 +28,8 @@ extern int icache_44x_need_flush;
#define PMD_TABLE_SIZE 0
#define PUD_TABLE_SIZE 0
#define PGD_TABLE_SIZE (sizeof(pgd_t) << PGD_INDEX_SIZE)
#define PMD_MASKED_BITS (PTE_TABLE_SIZE - 1)
#endif /* __ASSEMBLY__ */
#define PTRS_PER_PTE (1 << PTE_INDEX_SIZE)
@ -203,10 +205,6 @@ static inline void pmd_clear(pmd_t *pmdp)
*pmdp = __pmd(0);
}
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
/* to find an entry in a page-table-directory */
#define pgd_index(address) ((address) >> PGDIR_SHIFT)
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
@ -330,8 +328,6 @@ static inline int pte_young(pte_t pte)
* of the pte page. -- paulus
*/
#ifndef CONFIG_BOOKE
#define pmd_page_vaddr(pmd) \
((unsigned long)__va(pmd_val(pmd) & ~(PTE_TABLE_SIZE - 1)))
#define pmd_page(pmd) \
pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT)
#else
@ -341,15 +337,6 @@ static inline int pte_young(pte_t pte)
pfn_to_page((__pa(pmd_val(pmd)) >> PAGE_SHIFT))
#endif
/* Find an entry in the third-level page table.. */
#define pte_index(address) \
(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(dir, addr) \
(pmd_bad(*(dir)) ? NULL : (pte_t *)pmd_page_vaddr(*(dir)) + \
pte_index(addr))
#define pte_offset_map(dir, addr) pte_offset_kernel((dir), (addr))
static inline void pte_unmap(pte_t *pte) { }
/*
* Encode and decode a swap entry.
* Note that the bits we use in a PTE for representing a swap entry

4
arch/powerpc/include/asm/nohash/64/pgtable-4k.h
Просмотреть файл

@ -78,10 +78,6 @@ extern struct page *p4d_page(p4d_t p4d);
#endif /* !__ASSEMBLY__ */
#define pud_offset(p4dp, addr) \
(((pud_t *) p4d_page_vaddr(*(p4dp))) + \
(((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)))
#define pud_ERROR(e) \
pr_err("%s:%d: bad pud %08lx.\n", __FILE__, __LINE__, pud_val(e))

22
arch/powerpc/include/asm/nohash/64/pgtable.h
Просмотреть файл

@ -182,28 +182,6 @@ static inline void p4d_set(p4d_t *p4dp, unsigned long val)
*p4dp = __p4d(val);
}
/*
* Find an entry in a page-table-directory. We combine the address region
* (the high order N bits) and the pgd portion of the address.
*/
#define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & (PTRS_PER_PGD - 1))
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
#define pmd_offset(pudp,addr) \
(((pmd_t *) pud_page_vaddr(*(pudp))) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)))
#define pte_offset_kernel(dir,addr) \
(((pte_t *) pmd_page_vaddr(*(dir))) + (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
#define pte_offset_map(dir,addr) pte_offset_kernel((dir), (addr))
static inline void pte_unmap(pte_t *pte) { }
/* to find an entry in a kernel page-table-directory */
/* This now only contains the vmalloc pages */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
/* Atomic PTE updates */
static inline unsigned long pte_update(struct mm_struct *mm,
unsigned long addr,

7
arch/powerpc/include/asm/pgtable.h
Просмотреть файл

@ -57,6 +57,13 @@ static inline pgprot_t pte_pgprot(pte_t pte)
return __pgprot(pte_flags);
}
#ifndef pmd_page_vaddr
static inline unsigned long pmd_page_vaddr(pmd_t pmd)
{
return ((unsigned long)__va(pmd_val(pmd) & ~PMD_MASKED_BITS));
}
#define pmd_page_vaddr pmd_page_vaddr
#endif
/*
* ZERO_PAGE is a global shared page that is always zero: used
* for zero-mapped memory areas etc..

7
arch/riscv/include/asm/pgtable-64.h
Просмотреть файл

@ -70,13 +70,6 @@ static inline struct page *pud_page(pud_t pud)
return pfn_to_page(pud_val(pud) >> _PAGE_PFN_SHIFT);
}
#define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
{
return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(addr);
}
static inline pmd_t pfn_pmd(unsigned long pfn, pgprot_t prot)
{
return __pmd((pfn << _PAGE_PFN_SHIFT) | pgprot_val(prot));

20
arch/riscv/include/asm/pgtable.h
Просмотреть файл

@ -173,16 +173,6 @@ static inline unsigned long _pgd_pfn(pgd_t pgd)
return pgd_val(pgd) >> _PAGE_PFN_SHIFT;
}
#define pgd_index(addr) (((addr) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
/* Locate an entry in the page global directory */
static inline pgd_t *pgd_offset(const struct mm_struct *mm, unsigned long addr)
{
return mm->pgd + pgd_index(addr);
}
/* Locate an entry in the kernel page global directory */
#define pgd_offset_k(addr) pgd_offset(&init_mm, (addr))
static inline struct page *pmd_page(pmd_t pmd)
{
return pfn_to_page(pmd_val(pmd) >> _PAGE_PFN_SHIFT);
@ -209,16 +199,6 @@ static inline pte_t pfn_pte(unsigned long pfn, pgprot_t prot)
#define mk_pte(page, prot) pfn_pte(page_to_pfn(page), prot)
#define pte_index(addr) (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
static inline pte_t *pte_offset_kernel(pmd_t *pmd, unsigned long addr)
{
return (pte_t *)pmd_page_vaddr(*pmd) + pte_index(addr);
}
#define pte_offset_map(dir, addr) pte_offset_kernel((dir), (addr))
#define pte_unmap(pte) ((void)(pte))
static inline int pte_present(pte_t pte)
{
return (pte_val(pte) & (_PAGE_PRESENT | _PAGE_PROT_NONE));

30
arch/riscv/mm/init.c
Просмотреть файл

@ -235,12 +235,12 @@ static void __init create_pte_mapping(pte_t *ptep,
uintptr_t va, phys_addr_t pa,
phys_addr_t sz, pgprot_t prot)
{
uintptr_t pte_index = pte_index(va);
uintptr_t pte_idx = pte_index(va);
BUG_ON(sz != PAGE_SIZE);
if (pte_none(ptep[pte_index]))
ptep[pte_index] = pfn_pte(PFN_DOWN(pa), prot);
if (pte_none(ptep[pte_idx]))
ptep[pte_idx] = pfn_pte(PFN_DOWN(pa), prot);
}
#ifndef __PAGETABLE_PMD_FOLDED
@ -283,21 +283,21 @@ static void __init create_pmd_mapping(pmd_t *pmdp,
{
pte_t *ptep;
phys_addr_t pte_phys;
uintptr_t pmd_index = pmd_index(va);
uintptr_t pmd_idx = pmd_index(va);
if (sz == PMD_SIZE) {
if (pmd_none(pmdp[pmd_index]))
pmdp[pmd_index] = pfn_pmd(PFN_DOWN(pa), prot);
if (pmd_none(pmdp[pmd_idx]))
pmdp[pmd_idx] = pfn_pmd(PFN_DOWN(pa), prot);
return;
}
if (pmd_none(pmdp[pmd_index])) {
if (pmd_none(pmdp[pmd_idx])) {
pte_phys = alloc_pte(va);
pmdp[pmd_index] = pfn_pmd(PFN_DOWN(pte_phys), PAGE_TABLE);
pmdp[pmd_idx] = pfn_pmd(PFN_DOWN(pte_phys), PAGE_TABLE);
ptep = get_pte_virt(pte_phys);
memset(ptep, 0, PAGE_SIZE);
} else {
pte_phys = PFN_PHYS(_pmd_pfn(pmdp[pmd_index]));
pte_phys = PFN_PHYS(_pmd_pfn(pmdp[pmd_idx]));
ptep = get_pte_virt(pte_phys);
}
@ -325,21 +325,21 @@ static void __init create_pgd_mapping(pgd_t *pgdp,
{
pgd_next_t *nextp;
phys_addr_t next_phys;
uintptr_t pgd_index = pgd_index(va);
uintptr_t pgd_idx = pgd_index(va);
if (sz == PGDIR_SIZE) {
if (pgd_val(pgdp[pgd_index]) == 0)
pgdp[pgd_index] = pfn_pgd(PFN_DOWN(pa), prot);
if (pgd_val(pgdp[pgd_idx]) == 0)
pgdp[pgd_idx] = pfn_pgd(PFN_DOWN(pa), prot);
return;
}
if (pgd_val(pgdp[pgd_index]) == 0) {
if (pgd_val(pgdp[pgd_idx]) == 0) {
next_phys = alloc_pgd_next(va);
pgdp[pgd_index] = pfn_pgd(PFN_DOWN(next_phys), PAGE_TABLE);
pgdp[pgd_idx] = pfn_pgd(PFN_DOWN(next_phys), PAGE_TABLE);
nextp = get_pgd_next_virt(next_phys);
memset(nextp, 0, PAGE_SIZE);
} else {
next_phys = PFN_PHYS(_pgd_pfn(pgdp[pgd_index]));
next_phys = PFN_PHYS(_pgd_pfn(pgdp[pgd_idx]));
nextp = get_pgd_next_virt(next_phys);
}

13
arch/s390/include/asm/pgtable.h
Просмотреть файл

@ -1229,7 +1229,6 @@ static inline pte_t mk_pte(struct page *page, pgprot_t pgprot)
#define p4d_index(address) (((address) >> P4D_SHIFT) & (PTRS_PER_P4D-1))
#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
#define pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE-1))
#define pmd_deref(pmd) (pmd_val(pmd) & _SEGMENT_ENTRY_ORIGIN)
#define pud_deref(pud) (pud_val(pud) & _REGION_ENTRY_ORIGIN)
@ -1260,7 +1259,6 @@ static inline pgd_t *pgd_offset_raw(pgd_t *pgd, unsigned long address)
}
#define pgd_offset(mm, address) pgd_offset_raw(READ_ONCE((mm)->pgd), address)
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
static inline p4d_t *p4d_offset(pgd_t *pgd, unsigned long address)
{
@ -1275,6 +1273,7 @@ static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address)
return (pud_t *) p4d_deref(*p4d) + pud_index(address);
return (pud_t *) p4d;
}
#define pud_offset pud_offset
static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
{
@ -1282,17 +1281,13 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
return (pmd_t *) pud_deref(*pud) + pmd_index(address);
return (pmd_t *) pud;
}
#define pmd_offset pmd_offset
static inline pte_t *pte_offset(pmd_t *pmd, unsigned long address)
static inline unsigned long pmd_page_vaddr(pmd_t pmd)
{
return (pte_t *) pmd_deref(*pmd) + pte_index(address);
return (unsigned long) pmd_deref(pmd);
}
#define pte_offset_kernel(pmd, address) pte_offset(pmd, address)
#define pte_offset_map(pmd, address) pte_offset_kernel(pmd, address)
static inline void pte_unmap(pte_t *pte) { }
static inline bool gup_fast_permitted(unsigned long start, unsigned long end)
{
return end <= current->mm->context.asce_limit;

2
arch/s390/mm/pageattr.c
Просмотреть файл

@ -85,7 +85,7 @@ static int walk_pte_level(pmd_t *pmdp, unsigned long addr, unsigned long end,
{
pte_t *ptep, new;
ptep = pte_offset(pmdp, addr);
ptep = pte_offset_kernel(pmdp, addr);
do {
new = *ptep;
if (pte_none(new))

7
arch/sh/include/asm/pgtable-3level.h
Просмотреть файл

@ -39,13 +39,6 @@ static inline unsigned long pud_page_vaddr(pud_t pud)
/* only used by the stubbed out hugetlb gup code, should never be called */
#define pud_page(pud) NULL
#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
{
return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
}
#define pud_none(x) (!pud_val(x))
#define pud_present(x) (pud_val(x))
#define pud_clear(xp) do { set_pud(xp, __pud(0)); } while (0)

25
arch/sh/include/asm/pgtable_32.h
Просмотреть файл

@ -401,28 +401,13 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
return pte;
}
#define pmd_page_vaddr(pmd) ((unsigned long)pmd_val(pmd))
static inline unsigned long pmd_page_vaddr(pmd_t pmd)
{
return (unsigned long)pmd_val(pmd);
}
#define pmd_page(pmd) (virt_to_page(pmd_val(pmd)))
/* to find an entry in a page-table-directory. */
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
/* Find an entry in the third-level page table.. */
#define pte_index(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define __pte_offset(address) pte_index(address)
#define pte_offset_kernel(dir, address) \
((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
#define pte_offset_map(dir, address) pte_offset_kernel(dir, address)
#define pte_unmap(pte) do { } while (0)
#ifdef CONFIG_X2TLB
#define pte_ERROR(e) \
printk("%s:%d: bad pte %p(%08lx%08lx).\n", __FILE__, __LINE__, \

2
arch/sparc/include/asm/pgalloc_64.h
Просмотреть файл

@ -67,7 +67,7 @@ void pte_free(struct mm_struct *mm, pgtable_t ptepage);
#define pmd_populate_kernel(MM, PMD, PTE) pmd_set(MM, PMD, PTE)
#define pmd_populate(MM, PMD, PTE) pmd_set(MM, PMD, PTE)
#define pmd_pgtable(PMD) ((pte_t *)__pmd_page(PMD))
#define pmd_pgtable(PMD) ((pte_t *)pmd_page_vaddr(PMD))
void pgtable_free(void *table, bool is_page);

32
arch/sparc/include/asm/pgtable_32.h
Просмотреть файл

@ -146,6 +146,12 @@ static inline unsigned long __pmd_page(pmd_t pmd)
return (unsigned long)__nocache_va(v << 4);
}
static inline unsigned long pmd_page_vaddr(pmd_t pmd)
{
unsigned long v = pmd_val(pmd) & SRMMU_PTD_PMASK;
return (unsigned long)__nocache_va(v << 4);
}
static inline unsigned long pud_page_vaddr(pud_t pud)
{
if (srmmu_device_memory(pud_val(pud))) {
@ -315,30 +321,6 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
pgprot_val(newprot));
}
#define pgd_index(address) ((address) >> PGDIR_SHIFT)
/* to find an entry in a page-table-directory */
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
/* Find an entry in the second-level page table.. */
static inline pmd_t *pmd_offset(pud_t * dir, unsigned long address)
{
return (pmd_t *) pud_page_vaddr(*dir) +
((address >> PMD_SHIFT) & (PTRS_PER_PMD - 1));
}
/* Find an entry in the third-level page table.. */
pte_t *pte_offset_kernel(pmd_t * dir, unsigned long address);
/*
* This shortcut works on sun4m (and sun4d) because the nocache area is static.
*/
#define pte_offset_map(d, a) pte_offset_kernel(d,a)
#define pte_unmap(pte) do{}while(0)
struct seq_file;
void mmu_info(struct seq_file *m);
@ -427,7 +409,7 @@ static inline int io_remap_pfn_range(struct vm_area_struct *vma,
return remap_pfn_range(vma, from, phys_base >> PAGE_SHIFT, size, prot);
}
#define io_remap_pfn_range io_remap_pfn_range
#define io_remap_pfn_range io_remap_pfn_range
#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
#define ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty) \

31
arch/sparc/include/asm/pgtable_64.h
Просмотреть файл

@ -835,7 +835,7 @@ static inline void pmd_set(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)
#define pud_set(pudp, pmdp) \
(pud_val(*(pudp)) = (__pa((unsigned long) (pmdp))))
static inline unsigned long __pmd_page(pmd_t pmd)
static inline unsigned long pmd_page_vaddr(pmd_t pmd)
{
pte_t pte = __pte(pmd_val(pmd));
unsigned long pfn;
@ -855,7 +855,7 @@ static inline unsigned long pud_page_vaddr(pud_t pud)
return ((unsigned long) __va(pfn << PAGE_SHIFT));
}
#define pmd_page(pmd) virt_to_page((void *)__pmd_page(pmd))
#define pmd_page(pmd) virt_to_page((void *)pmd_page_vaddr(pmd))
#define pud_page(pud) virt_to_page((void *)pud_page_vaddr(pud))
#define pmd_clear(pmdp) (pmd_val(*(pmdp)) = 0UL)
#define pud_present(pud) (pud_val(pud) != 0U)
@ -889,31 +889,6 @@ static inline unsigned long pud_pfn(pud_t pud)
#define p4d_set(p4dp, pudp) \
(p4d_val(*(p4dp)) = (__pa((unsigned long) (pudp))))
/* to find an entry in a page-table-directory. */
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
/* Find an entry in the third-level page table.. */
#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))
#define pud_offset(p4dp, address) \
((pud_t *) p4d_page_vaddr(*(p4dp)) + pud_index(address))
/* Find an entry in the second-level page table.. */
#define pmd_offset(pudp, address) \
((pmd_t *) pud_page_vaddr(*(pudp)) + \
(((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1)))
/* Find an entry in the third-level page table.. */
#define pte_index(address) \
((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(dir, address) \
((pte_t *) __pmd_page(*(dir)) + pte_index(address))
#define pte_offset_map(dir, address) pte_offset_kernel((dir), (address))
#define pte_unmap(pte) do { } while (0)
/* We cannot include <linux/mm_types.h> at this point yet: */
extern struct mm_struct init_mm;
@ -1078,7 +1053,7 @@ static inline int io_remap_pfn_range(struct vm_area_struct *vma,
return remap_pfn_range(vma, from, phys_base >> PAGE_SHIFT, size, prot);
}
#define io_remap_pfn_range io_remap_pfn_range
#define io_remap_pfn_range io_remap_pfn_range
static inline unsigned long __untagged_addr(unsigned long start)
{

4
arch/um/include/asm/pgtable-3level.h
Просмотреть файл

@ -89,10 +89,6 @@ static inline void pud_clear (pud_t *pud)
#define pud_page(pud) phys_to_page(pud_val(pud) & PAGE_MASK)
#define pud_page_vaddr(pud) ((unsigned long) __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));

67
arch/um/include/asm/pgtable.h
Просмотреть файл

@ -1,5 +1,5 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
/*
* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Copyright 2003 PathScale, Inc.
* Derived from include/asm-i386/pgtable.h
@ -131,7 +131,7 @@ static inline int pte_none(pte_t pte)
* Undefined behaviour if not..
*/
static inline int pte_read(pte_t pte)
{
{
return((pte_get_bits(pte, _PAGE_USER)) &&
!(pte_get_bits(pte, _PAGE_PROTNONE)));
}
@ -163,7 +163,7 @@ static inline int pte_newpage(pte_t pte)
}
static inline int pte_newprot(pte_t pte)
{
{
return(pte_present(pte) && (pte_get_bits(pte, _PAGE_NEWPROT)));
}
@ -185,31 +185,31 @@ static inline pte_t pte_mkclean(pte_t pte)
return(pte);
}
static inline pte_t pte_mkold(pte_t pte)
{
static inline pte_t pte_mkold(pte_t pte)
{
pte_clear_bits(pte, _PAGE_ACCESSED);
return(pte);
}
static inline pte_t pte_wrprotect(pte_t pte)
{
{
if (likely(pte_get_bits(pte, _PAGE_RW)))
pte_clear_bits(pte, _PAGE_RW);
else
return pte;
return(pte_mknewprot(pte));
return(pte_mknewprot(pte));
}
static inline pte_t pte_mkread(pte_t pte)
{
{
if (unlikely(pte_get_bits(pte, _PAGE_USER)))
return pte;
pte_set_bits(pte, _PAGE_USER);
return(pte_mknewprot(pte));
return(pte_mknewprot(pte));
}
static inline pte_t pte_mkdirty(pte_t pte)
{
{
pte_set_bits(pte, _PAGE_DIRTY);
return(pte);
}
@ -220,20 +220,20 @@ static inline pte_t pte_mkyoung(pte_t pte)
return(pte);
}
static inline pte_t pte_mkwrite(pte_t pte)
static inline pte_t pte_mkwrite(pte_t pte)
{
if (unlikely(pte_get_bits(pte, _PAGE_RW)))
return pte;
pte_set_bits(pte, _PAGE_RW);
return(pte_mknewprot(pte));
return(pte_mknewprot(pte));
}
static inline pte_t pte_mkuptodate(pte_t pte)
static inline pte_t pte_mkuptodate(pte_t pte)
{
pte_clear_bits(pte, _PAGE_NEWPAGE);
if(pte_present(pte))
pte_clear_bits(pte, _PAGE_NEWPROT);
return(pte);
return(pte);
}
static inline pte_t pte_mknewpage(pte_t pte)
@ -288,29 +288,9 @@ static inline int pte_same(pte_t pte_a, pte_t pte_b)
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
{
pte_set_val(pte, (pte_val(pte) & _PAGE_CHG_MASK), newprot);
return pte;
return pte;
}
/*
* the pgd page can be thought of an array like this: pgd_t[PTRS_PER_PGD]
*
* this macro returns the index of the entry in the pgd page which would
* control the given virtual address
*/
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
/*
* pgd_offset() returns a (pgd_t *)
* pgd_index() is used get the offset into the pgd page's array of pgd_t's;
*/
#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
/*
* a shortcut which implies the use of the kernel's pgd, instead
* of a process's
*/
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
/*
* the pmd page can be thought of an array like this: pmd_t[PTRS_PER_PMD]
*
@ -318,23 +298,6 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
* control the given virtual address
*/
#define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
#define pmd_page_vaddr(pmd) \
((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
/*
* the pte page can be thought of an array like this: pte_t[PTRS_PER_PTE]
*
* this macro returns the index of the entry in the pte page which would
* control the given virtual address
*/
#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))
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
#define pte_unmap(pte) do { } while (0)
struct mm_struct;
extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr);

17
arch/unicore32/include/asm/pgtable.h
Просмотреть файл

@ -153,12 +153,6 @@ extern struct page *empty_zero_page;
#define pte_none(pte) (!pte_val(pte))
#define pte_clear(mm, addr, ptep) set_pte(ptep, __pte(0))
#define pte_page(pte) (pfn_to_page(pte_pfn(pte)))
#define pte_offset_kernel(dir, addr) (pmd_page_vaddr(*(dir)) \
+ __pte_index(addr))
#define pte_offset_map(dir, addr) (pmd_page_vaddr(*(dir)) \
+ __pte_index(addr))
#define pte_unmap(pte) do { } while (0)
#define set_pte(ptep, pte) cpu_set_pte(ptep, pte)
@ -221,17 +215,6 @@ PTE_BIT_FUNC(mkyoung, |= PTE_YOUNG);
*/
#define mk_pte(page, prot) pfn_pte(page_to_pfn(page), prot)
/* to find an entry in a page-table-directory */
#define pgd_index(addr) ((addr) >> PGDIR_SHIFT)
#define pgd_offset(mm, addr) ((mm)->pgd+pgd_index(addr))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(addr) pgd_offset(&init_mm, addr)
/* Find an entry in the third-level page table.. */
#define __pte_index(addr) (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
{
const unsigned long mask = PTE_EXEC | PTE_WRITE | PTE_READ;

71
arch/x86/include/asm/pgtable.h
Просмотреть файл

@ -836,17 +836,6 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd)
*/
#define pmd_page(pmd) pfn_to_page(pmd_pfn(pmd))
/*
* the pmd page can be thought of an array like this: pmd_t[PTRS_PER_PMD]
*
* this macro returns the index of the entry in the pmd page which would
* control the given virtual address
*/
static inline unsigned long pmd_index(unsigned long address)
{
return (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
}
/*
* Conversion functions: convert a page and protection to a page entry,
* and a page entry and page directory to the page they refer to.
@ -856,25 +845,6 @@ static inline unsigned long pmd_index(unsigned long address)
*/
#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
/*
* the pte page can be thought of an array like this: pte_t[PTRS_PER_PTE]
*
* this function returns the index of the entry in the pte page which would
* control the given virtual address
*
* Also define macro so we can test if pte_index is defined for arch.
*/
#define pte_index pte_index
static inline unsigned long pte_index(unsigned long address)
{
return (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1);
}
static inline pte_t *pte_offset_kernel(pmd_t *pmd, unsigned long address)
{
return (pte_t *)pmd_page_vaddr(*pmd) + pte_index(address);
}
static inline int pmd_bad(pmd_t pmd)
{
return (pmd_flags(pmd) & ~_PAGE_USER) != _KERNPG_TABLE;
@ -907,12 +877,6 @@ static inline unsigned long pud_page_vaddr(pud_t pud)
*/
#define pud_page(pud) pfn_to_page(pud_pfn(pud))
/* Find an entry in the second-level page table.. */
static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
{
return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
}
#define pud_leaf pud_large
static inline int pud_large(pud_t pud)
{
@ -932,11 +896,6 @@ static inline int pud_large(pud_t pud)
}
#endif /* CONFIG_PGTABLE_LEVELS > 2 */
static inline unsigned long pud_index(unsigned long address)
{
return (address >> PUD_SHIFT) & (PTRS_PER_PUD - 1);
}
#if CONFIG_PGTABLE_LEVELS > 3
static inline int p4d_none(p4d_t p4d)
{
@ -959,12 +918,6 @@ static inline unsigned long p4d_page_vaddr(p4d_t p4d)
*/
#define p4d_page(p4d) pfn_to_page(p4d_pfn(p4d))
/* Find an entry in the third-level page table.. */
static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address)
{
return (pud_t *)p4d_page_vaddr(*p4d) + pud_index(address);
}
static inline int p4d_bad(p4d_t p4d)
{
unsigned long ignore_flags = _KERNPG_TABLE | _PAGE_USER;
@ -1037,30 +990,6 @@ static inline int pgd_none(pgd_t pgd)
#endif /* __ASSEMBLY__ */
/*
* the pgd page can be thought of an array like this: pgd_t[PTRS_PER_PGD]
*
* this macro returns the index of the entry in the pgd page which would
* control the given virtual address
*/
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
/*
* pgd_offset() returns a (pgd_t *)
* pgd_index() is used get the offset into the pgd page's array of pgd_t's;
*/
#define pgd_offset_pgd(pgd, address) (pgd + pgd_index((address)))
/*
* a shortcut to get a pgd_t in a given mm
*/
#define pgd_offset(mm, address) pgd_offset_pgd((mm)->pgd, (address))
/*
* a shortcut which implies the use of the kernel's pgd, instead
* of a process's
*/
#define pgd_offset_k(address) pgd_offset(&init_mm, (address))
#define KERNEL_PGD_BOUNDARY pgd_index(PAGE_OFFSET)
#define KERNEL_PGD_PTRS (PTRS_PER_PGD - KERNEL_PGD_BOUNDARY)

11
arch/x86/include/asm/pgtable_32.h
Просмотреть файл

@ -45,17 +45,6 @@ void sync_initial_page_table(void);
# include <asm/pgtable-2level.h>
#endif
#if defined(CONFIG_HIGHPTE)
#define pte_offset_map(dir, address) \
((pte_t *)kmap_atomic(pmd_page(*(dir))) + \
pte_index((address)))
#define pte_unmap(pte) kunmap_atomic((pte))
#else
#define pte_offset_map(dir, address) \
((pte_t *)page_address(pmd_page(*(dir))) + pte_index((address)))
#define pte_unmap(pte) do { } while (0)
#endif
/* Clear a kernel PTE and flush it from the TLB */
#define kpte_clear_flush(ptep, vaddr) \
do { \

4
arch/x86/include/asm/pgtable_64.h
Просмотреть файл

@ -186,10 +186,6 @@ extern void sync_global_pgds(unsigned long start, unsigned long end);
/* PTE - Level 1 access. */
/* x86-64 always has all page tables mapped. */
#define pte_offset_map(dir, address) pte_offset_kernel((dir), (address))
#define pte_unmap(pte) ((void)(pte))/* NOP */
/*
* Encode and de-code a swap entry
*

18
arch/xtensa/include/asm/pgtable.h
Просмотреть файл

@ -267,7 +267,7 @@ static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITABLE; }
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 pte_t pte_wrprotect(pte_t pte)
static inline pte_t pte_wrprotect(pte_t pte)
{ pte_val(pte) &= ~(_PAGE_WRITABLE | _PAGE_HW_WRITE); return pte; }
static inline pte_t pte_mkclean(pte_t pte)
{ pte_val(pte) &= ~(_PAGE_DIRTY | _PAGE_HW_WRITE); return pte; }
@ -359,22 +359,6 @@ ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
update_pte(ptep, pte_wrprotect(pte));
}
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
/* to find an entry in a page-table-directory */
#define pgd_offset(mm,address) ((mm)->pgd + pgd_index(address))
#define pgd_index(address) ((address) >> PGDIR_SHIFT)
/* Find an entry in the third-level page table.. */
#define pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
#define pte_offset_kernel(dir,addr) \
((pte_t*) pmd_page_vaddr(*(dir)) + pte_index(addr))
#define pte_offset_map(dir,addr) pte_offset_kernel((dir),(addr))
#define pte_unmap(pte) do { } while (0)
/*
* Encode and decode a swap and file entry.
*/

1
include/asm-generic/pgtable-nopmd.h
Просмотреть файл

@ -45,6 +45,7 @@ static inline pmd_t * pmd_offset(pud_t * pud, unsigned long address)
{
return (pmd_t *)pud;
}
#define pmd_offset pmd_offset
#define pmd_val(x) (pud_val((x).pud))
#define __pmd(x) ((pmd_t) { __pud(x) } )

1
include/asm-generic/pgtable-nopud.h
Просмотреть файл

@ -43,6 +43,7 @@ static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address)
{
return (pud_t *)p4d;
}
#define pud_offset pud_offset
#define pud_val(x) (p4d_val((x).p4d))
#define __pud(x) ((pud_t) { __p4d(x) })

91
include/linux/pgtable.h
Просмотреть файл

@ -28,6 +28,97 @@
#define USER_PGTABLES_CEILING 0UL
#endif
/*
* A page table page can be thought of an array like this: pXd_t[PTRS_PER_PxD]
*
* The pXx_index() functions return the index of the entry in the page
* table page which would control the given virtual address
*
* As these functions may be used by the same code for different levels of
* the page table folding, they are always available, regardless of
* CONFIG_PGTABLE_LEVELS value. For the folded levels they simply return 0
* because in such cases PTRS_PER_PxD equals 1.
*/
static inline unsigned long pte_index(unsigned long address)
{
return (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1);
}
#ifndef pmd_index
static inline unsigned long pmd_index(unsigned long address)
{
return (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
}
#define pmd_index pmd_index
#endif
#ifndef pud_index
static inline unsigned long pud_index(unsigned long address)
{
return (address >> PUD_SHIFT) & (PTRS_PER_PUD - 1);
}
#define pud_index pud_index
#endif
#ifndef pgd_index
/* Must be a compile-time constant, so implement it as a macro */
#define pgd_index(a) (((a) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
#endif
#ifndef pte_offset_kernel
static inline pte_t *pte_offset_kernel(pmd_t *pmd, unsigned long address)
{
return (pte_t *)pmd_page_vaddr(*pmd) + pte_index(address);
}
#define pte_offset_kernel pte_offset_kernel
#endif
#if defined(CONFIG_HIGHPTE)
#define pte_offset_map(dir, address) \
((pte_t *)kmap_atomic(pmd_page(*(dir))) + \
pte_index((address)))
#define pte_unmap(pte) kunmap_atomic((pte))
#else
#define pte_offset_map(dir, address) pte_offset_kernel((dir), (address))
#define pte_unmap(pte) ((void)(pte)) /* NOP */
#endif
/* Find an entry in the second-level page table.. */
#ifndef pmd_offset
static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
{
return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
}
#define pmd_offset pmd_offset
#endif
#ifndef pud_offset
static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address)
{
return (pud_t *)p4d_page_vaddr(*p4d) + pud_index(address);
}
#define pud_offset pud_offset
#endif
static inline pgd_t *pgd_offset_pgd(pgd_t *pgd, unsigned long address)
{
return (pgd + pgd_index(address));
};
/*
* a shortcut to get a pgd_t in a given mm
*/
#ifndef pgd_offset
#define pgd_offset(mm, address) pgd_offset_pgd((mm)->pgd, (address))
#endif
/*
* a shortcut which implies the use of the kernel's pgd, instead
* of a process's
*/
#define pgd_offset_k(address) pgd_offset(&init_mm, (address))
/*
* In many cases it is known that a virtual address is mapped at PMD or PTE
* level, so instead of traversing all the page table levels, we can get a