diff options
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_book3s_64.h | 26 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/kvm_host.h | 2 |
2 files changed, 28 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h b/arch/powerpc/include/asm/kvm_book3s_64.h index 10920f7a2b8..18b590d261f 100644 --- a/arch/powerpc/include/asm/kvm_book3s_64.h +++ b/arch/powerpc/include/asm/kvm_book3s_64.h @@ -113,6 +113,32 @@ static inline unsigned long hpte_page_size(unsigned long h, unsigned long l) return 0; /* error */ } +static inline int hpte_cache_flags_ok(unsigned long ptel, unsigned long io_type) +{ + unsigned int wimg = ptel & HPTE_R_WIMG; + + /* Handle SAO */ + if (wimg == (HPTE_R_W | HPTE_R_I | HPTE_R_M) && + cpu_has_feature(CPU_FTR_ARCH_206)) + wimg = HPTE_R_M; + + if (!io_type) + return wimg == HPTE_R_M; + + return (wimg & (HPTE_R_W | HPTE_R_I)) == io_type; +} + +/* Return HPTE cache control bits corresponding to Linux pte bits */ +static inline unsigned long hpte_cache_bits(unsigned long pte_val) +{ +#if _PAGE_NO_CACHE == HPTE_R_I && _PAGE_WRITETHRU == HPTE_R_W + return pte_val & (HPTE_R_W | HPTE_R_I); +#else + return ((pte_val & _PAGE_NO_CACHE) ? HPTE_R_I : 0) + + ((pte_val & _PAGE_WRITETHRU) ? HPTE_R_W : 0); +#endif +} + static inline bool slot_is_aligned(struct kvm_memory_slot *memslot, unsigned long pagesize) { diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index 9252d5e3758..243bc803857 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -178,6 +178,8 @@ struct revmap_entry { /* Low-order bits in kvm->arch.slot_phys[][] */ #define KVMPPC_PAGE_ORDER_MASK 0x1f +#define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */ +#define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */ #define KVMPPC_GOT_PAGE 0x80 struct kvm_arch { |