pgtable.h (b0412ea94bcbd08dc1e61043dfdd9c33272cec48) pgtable.h (f281b5d50c87ecca108dcbf8f791bd8923fde3de)
1#ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_H_
2#define _ASM_POWERPC_BOOK3S_64_PGTABLE_H_
3/*
4 * This file contains the functions and defines necessary to modify and use
5 * the ppc64 hashed page table.
6 */
7
8#include <asm/book3s/64/hash.h>

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231#endif /* __real_pte */
232
233
234/* pte_clear moved to later in this file */
235
236#define PMD_BAD_BITS (PTE_TABLE_SIZE-1)
237#define PUD_BAD_BITS (PMD_TABLE_SIZE-1)
238
1#ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_H_
2#define _ASM_POWERPC_BOOK3S_64_PGTABLE_H_
3/*
4 * This file contains the functions and defines necessary to modify and use
5 * the ppc64 hashed page table.
6 */
7
8#include <asm/book3s/64/hash.h>

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231#endif /* __real_pte */
232
233
234/* pte_clear moved to later in this file */
235
236#define PMD_BAD_BITS (PTE_TABLE_SIZE-1)
237#define PUD_BAD_BITS (PMD_TABLE_SIZE-1)
238
239#define pmd_set(pmdp, pmdval) (pmd_val(*(pmdp)) = (pmdval))
239static inline void pmd_set(pmd_t *pmdp, unsigned long val)
240{
241 *pmdp = __pmd(val);
242}
243
244static inline void pmd_clear(pmd_t *pmdp)
245{
246 *pmdp = __pmd(0);
247}
248
249
240#define pmd_none(pmd) (!pmd_val(pmd))
241#define pmd_bad(pmd) (!is_kernel_addr(pmd_val(pmd)) \
242 || (pmd_val(pmd) & PMD_BAD_BITS))
243#define pmd_present(pmd) (!pmd_none(pmd))
250#define pmd_none(pmd) (!pmd_val(pmd))
251#define pmd_bad(pmd) (!is_kernel_addr(pmd_val(pmd)) \
252 || (pmd_val(pmd) & PMD_BAD_BITS))
253#define pmd_present(pmd) (!pmd_none(pmd))
244#define pmd_clear(pmdp) (pmd_val(*(pmdp)) = 0)
245#define pmd_page_vaddr(pmd) (pmd_val(pmd) & ~PMD_MASKED_BITS)
246extern struct page *pmd_page(pmd_t pmd);
247
254#define pmd_page_vaddr(pmd) (pmd_val(pmd) & ~PMD_MASKED_BITS)
255extern struct page *pmd_page(pmd_t pmd);
256
248#define pud_set(pudp, pudval) (pud_val(*(pudp)) = (pudval))
257static inline void pud_set(pud_t *pudp, unsigned long val)
258{
259 *pudp = __pud(val);
260}
261
262static inline void pud_clear(pud_t *pudp)
263{
264 *pudp = __pud(0);
265}
266
249#define pud_none(pud) (!pud_val(pud))
250#define pud_bad(pud) (!is_kernel_addr(pud_val(pud)) \
251 || (pud_val(pud) & PUD_BAD_BITS))
252#define pud_present(pud) (pud_val(pud) != 0)
267#define pud_none(pud) (!pud_val(pud))
268#define pud_bad(pud) (!is_kernel_addr(pud_val(pud)) \
269 || (pud_val(pud) & PUD_BAD_BITS))
270#define pud_present(pud) (pud_val(pud) != 0)
253#define pud_clear(pudp) (pud_val(*(pudp)) = 0)
254#define pud_page_vaddr(pud) (pud_val(pud) & ~PUD_MASKED_BITS)
255
256extern struct page *pud_page(pud_t pud);
257
258static inline pte_t pud_pte(pud_t pud)
259{
260 return __pte(pud_val(pud));
261}
262
263static inline pud_t pte_pud(pte_t pte)
264{
265 return __pud(pte_val(pte));
266}
267#define pud_write(pud) pte_write(pud_pte(pud))
271#define pud_page_vaddr(pud) (pud_val(pud) & ~PUD_MASKED_BITS)
272
273extern struct page *pud_page(pud_t pud);
274
275static inline pte_t pud_pte(pud_t pud)
276{
277 return __pte(pud_val(pud));
278}
279
280static inline pud_t pte_pud(pte_t pte)
281{
282 return __pud(pte_val(pte));
283}
284#define pud_write(pud) pte_write(pud_pte(pud))
268#define pgd_set(pgdp, pudp) ({pgd_val(*(pgdp)) = (unsigned long)(pudp);})
269#define pgd_write(pgd) pte_write(pgd_pte(pgd))
285#define pgd_write(pgd) pte_write(pgd_pte(pgd))
286static inline void pgd_set(pgd_t *pgdp, unsigned long val)
287{
288 *pgdp = __pgd(val);
289}
270
271/*
272 * Find an entry in a page-table-directory. We combine the address region
273 * (the high order N bits) and the pgd portion of the address.
274 */
275#define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & (PTRS_PER_PGD - 1))
276
277#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))

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583static inline pmd_t pmd_mkhuge(pmd_t pmd)
584{
585 /* Do nothing, mk_pmd() does this part. */
586 return pmd;
587}
588
589static inline pmd_t pmd_mknotpresent(pmd_t pmd)
590{
290
291/*
292 * Find an entry in a page-table-directory. We combine the address region
293 * (the high order N bits) and the pgd portion of the address.
294 */
295#define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & (PTRS_PER_PGD - 1))
296
297#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))

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603static inline pmd_t pmd_mkhuge(pmd_t pmd)
604{
605 /* Do nothing, mk_pmd() does this part. */
606 return pmd;
607}
608
609static inline pmd_t pmd_mknotpresent(pmd_t pmd)
610{
591 pmd_val(pmd) &= ~_PAGE_PRESENT;
592 return pmd;
611 return __pmd(pmd_val(pmd) & ~_PAGE_PRESENT);
593}
594
595static inline pmd_t pmd_mksplitting(pmd_t pmd)
596{
612}
613
614static inline pmd_t pmd_mksplitting(pmd_t pmd)
615{
597 pmd_val(pmd) |= _PAGE_SPLITTING;
598 return pmd;
616 return __pmd(pmd_val(pmd) | _PAGE_SPLITTING);
599}
600
601#define __HAVE_ARCH_PMD_SAME
602static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b)
603{
604 return (((pmd_val(pmd_a) ^ pmd_val(pmd_b)) & ~_PAGE_HPTEFLAGS) == 0);
605}
606

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618
619#define __HAVE_ARCH_PMD_SAME
620static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b)
621{
622 return (((pmd_val(pmd_a) ^ pmd_val(pmd_b)) & ~_PAGE_HPTEFLAGS) == 0);
623}
624

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