diff options
Diffstat (limited to 'arch/x86/include/asm/tlbflush.h')
| -rw-r--r-- | arch/x86/include/asm/tlbflush.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h index f7b374bcdc0b..1f61a39a8776 100644 --- a/arch/x86/include/asm/tlbflush.h +++ b/arch/x86/include/asm/tlbflush.h @@ -240,6 +240,11 @@ static inline bool is_dyn_asid(u16 asid) return asid < TLB_NR_DYN_ASIDS; } +static inline bool is_global_asid(u16 asid) +{ + return !is_dyn_asid(asid); +} + #ifdef CONFIG_BROADCAST_TLB_FLUSH static inline u16 mm_global_asid(struct mm_struct *mm) { @@ -266,9 +271,18 @@ static inline void mm_assign_global_asid(struct mm_struct *mm, u16 asid) mm->context.asid_transition = true; smp_store_release(&mm->context.global_asid, asid); } + +static inline bool mm_in_asid_transition(struct mm_struct *mm) +{ + if (!cpu_feature_enabled(X86_FEATURE_INVLPGB)) + return false; + + return mm && READ_ONCE(mm->context.asid_transition); +} #else static inline u16 mm_global_asid(struct mm_struct *mm) { return 0; } static inline void mm_assign_global_asid(struct mm_struct *mm, u16 asid) { } +static inline bool mm_in_asid_transition(struct mm_struct *mm) { return false; } #endif /* CONFIG_BROADCAST_TLB_FLUSH */ #ifdef CONFIG_PARAVIRT |