diff options
| author | Ram Pai <linuxram@us.ibm.com> | 2018-01-19 04:50:36 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-01-20 14:59:03 +0300 |
| commit | a6590ca55f1f49912e17e4811ccae9a51bda8859 (patch) | |
| tree | bf406906eb4c82c0c7a7e25607e865a0206d0251 /arch/powerpc/include/asm/pkeys.h | |
| parent | eb95d016ce3d3404e061c7c85d4362094dc34b3f (diff) | |
| download | linux-a6590ca55f1f49912e17e4811ccae9a51bda8859.tar.xz | |
powerpc: Program HPTE key protection bits
Map the PTE protection key bits to the HPTE key protection bits,
while creating HPTE entries.
Acked-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/pkeys.h')
| -rw-r--r-- | arch/powerpc/include/asm/pkeys.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pkeys.h b/arch/powerpc/include/asm/pkeys.h index 03d8d5053126..a8ef7fa5360e 100644 --- a/arch/powerpc/include/asm/pkeys.h +++ b/arch/powerpc/include/asm/pkeys.h @@ -62,6 +62,15 @@ static inline int vma_pkey(struct vm_area_struct *vma) #define arch_max_pkey() pkeys_total +static inline u64 pte_to_hpte_pkey_bits(u64 pteflags) +{ + return (((pteflags & H_PTE_PKEY_BIT0) ? HPTE_R_KEY_BIT0 : 0x0UL) | + ((pteflags & H_PTE_PKEY_BIT1) ? HPTE_R_KEY_BIT1 : 0x0UL) | + ((pteflags & H_PTE_PKEY_BIT2) ? HPTE_R_KEY_BIT2 : 0x0UL) | + ((pteflags & H_PTE_PKEY_BIT3) ? HPTE_R_KEY_BIT3 : 0x0UL) | + ((pteflags & H_PTE_PKEY_BIT4) ? HPTE_R_KEY_BIT4 : 0x0UL)); +} + #define pkey_alloc_mask(pkey) (0x1 << pkey) #define mm_pkey_allocation_map(mm) (mm->context.pkey_allocation_map) |