diff options
Diffstat (limited to 'arch/powerpc/include/asm/pkeys.h')
| -rw-r--r-- | arch/powerpc/include/asm/pkeys.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pkeys.h b/arch/powerpc/include/asm/pkeys.h index 24e82260052f..03d8d5053126 100644 --- a/arch/powerpc/include/asm/pkeys.h +++ b/arch/powerpc/include/asm/pkeys.h @@ -41,6 +41,18 @@ static inline u64 pkey_to_vmflag_bits(u16 pkey) return (((u64)pkey << VM_PKEY_SHIFT) & ARCH_VM_PKEY_FLAGS); } +static inline u64 vmflag_to_pte_pkey_bits(u64 vm_flags) +{ + if (static_branch_likely(&pkey_disabled)) + return 0x0UL; + + return (((vm_flags & VM_PKEY_BIT0) ? H_PTE_PKEY_BIT4 : 0x0UL) | + ((vm_flags & VM_PKEY_BIT1) ? H_PTE_PKEY_BIT3 : 0x0UL) | + ((vm_flags & VM_PKEY_BIT2) ? H_PTE_PKEY_BIT2 : 0x0UL) | + ((vm_flags & VM_PKEY_BIT3) ? H_PTE_PKEY_BIT1 : 0x0UL) | + ((vm_flags & VM_PKEY_BIT4) ? H_PTE_PKEY_BIT0 : 0x0UL)); +} + static inline int vma_pkey(struct vm_area_struct *vma) { if (static_branch_likely(&pkey_disabled)) |