diff options
Diffstat (limited to 'arch/powerpc/include/asm/kvm_book3s_64.h')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_book3s_64.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h b/arch/powerpc/include/asm/kvm_book3s_64.h index 9508c03e6671..79dc37fb86b5 100644 --- a/arch/powerpc/include/asm/kvm_book3s_64.h +++ b/arch/powerpc/include/asm/kvm_book3s_64.h @@ -43,12 +43,15 @@ static inline void svcpu_put(struct kvmppc_book3s_shadow_vcpu *svcpu) #define HPT_HASH_MASK (HPT_NPTEG - 1) #endif +#define VRMA_VSID 0x1ffffffUL /* 1TB VSID reserved for VRMA */ + /* * We use a lock bit in HPTE dword 0 to synchronize updates and * accesses to each HPTE, and another bit to indicate non-present * HPTEs. */ #define HPTE_V_HVLOCK 0x40UL +#define HPTE_V_ABSENT 0x20UL static inline long try_lock_hpte(unsigned long *hpte, unsigned long bits) { @@ -144,6 +147,29 @@ static inline unsigned long hpte_cache_bits(unsigned long pte_val) #endif } +static inline bool hpte_read_permission(unsigned long pp, unsigned long key) +{ + if (key) + return PP_RWRX <= pp && pp <= PP_RXRX; + return 1; +} + +static inline bool hpte_write_permission(unsigned long pp, unsigned long key) +{ + if (key) + return pp == PP_RWRW; + return pp <= PP_RWRW; +} + +static inline int hpte_get_skey_perm(unsigned long hpte_r, unsigned long amr) +{ + unsigned long skey; + + skey = ((hpte_r & HPTE_R_KEY_HI) >> 57) | + ((hpte_r & HPTE_R_KEY_LO) >> 9); + return (amr >> (62 - 2 * skey)) & 3; +} + static inline void lock_rmap(unsigned long *rmap) { do { |