diff options
Diffstat (limited to 'arch/arm64/include/asm')
| -rw-r--r-- | arch/arm64/include/asm/pgtable.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index b78cc4a6758b..2faecc033a19 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -578,6 +578,14 @@ static inline pmd_t pmd_mkdevmap(pmd_t pmd) return pte_pmd(set_pte_bit(pmd_pte(pmd), __pgprot(PTE_DEVMAP))); } +#ifdef CONFIG_ARCH_SUPPORTS_PMD_PFNMAP +#define pmd_special(pte) (!!((pmd_val(pte) & PTE_SPECIAL))) +static inline pmd_t pmd_mkspecial(pmd_t pmd) +{ + return set_pmd_bit(pmd, __pgprot(PTE_SPECIAL)); +} +#endif + #define __pmd_to_phys(pmd) __pte_to_phys(pmd_pte(pmd)) #define __phys_to_pmd_val(phys) __phys_to_pte_val(phys) #define pmd_pfn(pmd) ((__pmd_to_phys(pmd) & PMD_MASK) >> PAGE_SHIFT) @@ -595,6 +603,27 @@ static inline pmd_t pmd_mkdevmap(pmd_t pmd) #define pud_pfn(pud) ((__pud_to_phys(pud) & PUD_MASK) >> PAGE_SHIFT) #define pfn_pud(pfn,prot) __pud(__phys_to_pud_val((phys_addr_t)(pfn) << PAGE_SHIFT) | pgprot_val(prot)) +#ifdef CONFIG_ARCH_SUPPORTS_PUD_PFNMAP +#define pud_special(pte) pte_special(pud_pte(pud)) +#define pud_mkspecial(pte) pte_pud(pte_mkspecial(pud_pte(pud))) +#endif + +#define pmd_pgprot pmd_pgprot +static inline pgprot_t pmd_pgprot(pmd_t pmd) +{ + unsigned long pfn = pmd_pfn(pmd); + + return __pgprot(pmd_val(pfn_pmd(pfn, __pgprot(0))) ^ pmd_val(pmd)); +} + +#define pud_pgprot pud_pgprot +static inline pgprot_t pud_pgprot(pud_t pud) +{ + unsigned long pfn = pud_pfn(pud); + + return __pgprot(pud_val(pfn_pud(pfn, __pgprot(0))) ^ pud_val(pud)); +} + static inline void __set_pte_at(struct mm_struct *mm, unsigned long __always_unused addr, pte_t *ptep, pte_t pte, unsigned int nr) |