diff options
Diffstat (limited to 'arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h')
| -rw-r--r-- | arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h | 46 |
1 files changed, 42 insertions, 4 deletions
diff --git a/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h b/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h index a46616937d20..92df40c6cc6b 100644 --- a/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h +++ b/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h @@ -13,13 +13,13 @@ static inline pte_t *hugepd_page(hugepd_t hpd) static inline unsigned int hugepd_shift(hugepd_t hpd) { - return ((hpd_val(hpd) & _PMD_PAGE_MASK) >> 1) + 17; + return PAGE_SHIFT_8M; } static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr, unsigned int pdshift) { - unsigned long idx = (addr & ((1UL << pdshift) - 1)) >> PAGE_SHIFT; + unsigned long idx = (addr & (SZ_4M - 1)) >> PAGE_SHIFT; return hugepd_page(hpd) + idx; } @@ -32,8 +32,12 @@ static inline void flush_hugetlb_page(struct vm_area_struct *vma, static inline void hugepd_populate(hugepd_t *hpdp, pte_t *new, unsigned int pshift) { - *hpdp = __hugepd(__pa(new) | _PMD_USER | _PMD_PRESENT | - (pshift == PAGE_SHIFT_8M ? _PMD_PAGE_8M : _PMD_PAGE_512K)); + *hpdp = __hugepd(__pa(new) | _PMD_USER | _PMD_PRESENT | _PMD_PAGE_8M); +} + +static inline void hugepd_populate_kernel(hugepd_t *hpdp, pte_t *new, unsigned int pshift) +{ + *hpdp = __hugepd(__pa(new) | _PMD_PRESENT | _PMD_PAGE_8M); } static inline int check_and_get_huge_psize(int shift) @@ -41,4 +45,38 @@ static inline int check_and_get_huge_psize(int shift) return shift_to_mmu_psize(shift); } +#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT +void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, + pte_t pte, unsigned long sz); + +#define __HAVE_ARCH_HUGE_PTE_CLEAR +static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, unsigned long sz) +{ + pte_update(mm, addr, ptep, ~0UL, 0, 1); +} + +#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT +static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, + unsigned long addr, pte_t *ptep) +{ + unsigned long clr = ~pte_val(pte_wrprotect(__pte(~0))); + unsigned long set = pte_val(pte_wrprotect(__pte(0))); + + pte_update(mm, addr, ptep, clr, set, 1); +} + +#ifdef CONFIG_PPC_4K_PAGES +static inline pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags) +{ + size_t size = 1UL << shift; + + if (size == SZ_16K) + return __pte(pte_val(entry) | _PAGE_SPS); + else + return __pte(pte_val(entry) | _PAGE_SPS | _PAGE_HUGE); +} +#define arch_make_huge_pte arch_make_huge_pte +#endif + #endif /* _ASM_POWERPC_NOHASH_32_HUGETLB_8XX_H */ |