diff options
Diffstat (limited to 'arch/sparc/include/asm/pgtable_64.h')
| -rw-r--r-- | arch/sparc/include/asm/pgtable_64.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h index 8358ba00aa5d..1599de730532 100644 --- a/arch/sparc/include/asm/pgtable_64.h +++ b/arch/sparc/include/asm/pgtable_64.h @@ -1100,6 +1100,24 @@ static inline unsigned long untagged_addr(unsigned long start) } #define untagged_addr untagged_addr +static inline bool pte_access_permitted(pte_t pte, bool write) +{ + u64 prot; + + if (tlb_type == hypervisor) { + prot = _PAGE_PRESENT_4V | _PAGE_P_4V; + if (write) + prot |= _PAGE_WRITE_4V; + } else { + prot = _PAGE_PRESENT_4U | _PAGE_P_4U; + if (write) + prot |= _PAGE_WRITE_4U; + } + + return (pte_val(pte) & (prot | _PAGE_SPECIAL)) == prot; +} +#define pte_access_permitted pte_access_permitted + #include <asm/tlbflush.h> #include <asm-generic/pgtable.h> |