mirror of
https://github.com/torvalds/linux.git
synced 2024-11-01 01:31:44 +00:00
d1953c8888
For 32-bit systems, powerpc still relies on the 4level-fixup.h hack, to pretend that the generic pagetable handling stuff is 3-levels rather than 4. This patch removes this, instead using the newer pgtable-nopmd.h to handle the elision of both the pud and pmd pagetable levels (ppc32 pagetables are actually 2 levels). This removes a little extraneous code, and makes it more easily compared to the 64-bit pagetable code. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
#ifndef _ASM_POWERPC_PGALLOC_32_H
|
|
#define _ASM_POWERPC_PGALLOC_32_H
|
|
|
|
#include <linux/threads.h>
|
|
|
|
extern void __bad_pte(pmd_t *pmd);
|
|
|
|
extern pgd_t *pgd_alloc(struct mm_struct *mm);
|
|
extern void pgd_free(pgd_t *pgd);
|
|
|
|
/*
|
|
* We don't have any real pmd's, and this code never triggers because
|
|
* the pgd will always be present..
|
|
*/
|
|
/* #define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); }) */
|
|
#define pmd_free(x) do { } while (0)
|
|
#define __pmd_free_tlb(tlb,x) do { } while (0)
|
|
/* #define pgd_populate(mm, pmd, pte) BUG() */
|
|
|
|
#ifndef CONFIG_BOOKE
|
|
#define pmd_populate_kernel(mm, pmd, pte) \
|
|
(pmd_val(*(pmd)) = __pa(pte) | _PMD_PRESENT)
|
|
#define pmd_populate(mm, pmd, pte) \
|
|
(pmd_val(*(pmd)) = (page_to_pfn(pte) << PAGE_SHIFT) | _PMD_PRESENT)
|
|
#else
|
|
#define pmd_populate_kernel(mm, pmd, pte) \
|
|
(pmd_val(*(pmd)) = (unsigned long)pte | _PMD_PRESENT)
|
|
#define pmd_populate(mm, pmd, pte) \
|
|
(pmd_val(*(pmd)) = (unsigned long)lowmem_page_address(pte) | _PMD_PRESENT)
|
|
#endif
|
|
|
|
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
|
|
extern struct page *pte_alloc_one(struct mm_struct *mm, unsigned long addr);
|
|
extern void pte_free_kernel(pte_t *pte);
|
|
extern void pte_free(struct page *pte);
|
|
|
|
#define __pte_free_tlb(tlb, pte) pte_free((pte))
|
|
|
|
#define check_pgt_cache() do { } while (0)
|
|
|
|
#endif /* _ASM_POWERPC_PGALLOC_32_H */
|