diff options
Diffstat (limited to 'arch/powerpc/include/asm/book3s/64/mmu-hash.h')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/mmu-hash.h | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/mmu-hash.h b/arch/powerpc/include/asm/book3s/64/mmu-hash.h index 683a9c7d1b03..066b1d34c7bc 100644 --- a/arch/powerpc/include/asm/book3s/64/mmu-hash.h +++ b/arch/powerpc/include/asm/book3s/64/mmu-hash.h @@ -452,6 +452,7 @@ static inline unsigned long hpt_hash(unsigned long vpn, #define HPTE_LOCAL_UPDATE 0x1 #define HPTE_NOHPTE_UPDATE 0x2 +#define HPTE_USE_KERNEL_KEY 0x4 extern int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid, pte_t *ptep, unsigned long trap, @@ -842,6 +843,32 @@ static inline unsigned long get_kernel_vsid(unsigned long ea, int ssize) unsigned htab_shift_for_mem_size(unsigned long mem_size); -#endif /* __ASSEMBLY__ */ +enum slb_index { + LINEAR_INDEX = 0, /* Kernel linear map (0xc000000000000000) */ + KSTACK_INDEX = 1, /* Kernel stack map */ +}; +#define slb_esid_mask(ssize) \ + (((ssize) == MMU_SEGSIZE_256M) ? ESID_MASK : ESID_MASK_1T) + +static inline unsigned long mk_esid_data(unsigned long ea, int ssize, + enum slb_index index) +{ + return (ea & slb_esid_mask(ssize)) | SLB_ESID_V | index; +} + +static inline unsigned long __mk_vsid_data(unsigned long vsid, int ssize, + unsigned long flags) +{ + return (vsid << slb_vsid_shift(ssize)) | flags | + ((unsigned long)ssize << SLB_VSID_SSIZE_SHIFT); +} + +static inline unsigned long mk_vsid_data(unsigned long ea, int ssize, + unsigned long flags) +{ + return __mk_vsid_data(get_kernel_vsid(ea, ssize), ssize, flags); +} + +#endif /* __ASSEMBLY__ */ #endif /* _ASM_POWERPC_BOOK3S_64_MMU_HASH_H_ */ |