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-rw-r--r--arch/x86/include/asm/nospec-branch.h2
-rw-r--r--arch/x86/include/asm/tlbflush.h8
2 files changed, 8 insertions, 2 deletions
diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h
index be0b0aa780e2..d4d35baf0430 100644
--- a/arch/x86/include/asm/nospec-branch.h
+++ b/arch/x86/include/asm/nospec-branch.h
@@ -312,6 +312,8 @@ do { \
} while (0)
DECLARE_STATIC_KEY_FALSE(switch_to_cond_stibp);
+DECLARE_STATIC_KEY_FALSE(switch_mm_cond_ibpb);
+DECLARE_STATIC_KEY_FALSE(switch_mm_always_ibpb);
#endif /* __ASSEMBLY__ */
diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
index d760611cfc35..f4204bf377fc 100644
--- a/arch/x86/include/asm/tlbflush.h
+++ b/arch/x86/include/asm/tlbflush.h
@@ -169,10 +169,14 @@ struct tlb_state {
#define LOADED_MM_SWITCHING ((struct mm_struct *)1)
+ /* Last user mm for optimizing IBPB */
+ union {
+ struct mm_struct *last_user_mm;
+ unsigned long last_user_mm_ibpb;
+ };
+
u16 loaded_mm_asid;
u16 next_asid;
- /* last user mm's ctx id */
- u64 last_ctx_id;
/*
* We can be in one of several states: