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Subject[PATCH 1/2] x86/speculation: Change STIPB to STIBP
Date
STIBP stands for Single Thread Indirect Branch Predictors. The acronym,
however, can be easily mis-spelled as STIPB. It is perhaps due to the
presence of another related term - IBPB (Indirect Branch Predictor
Barrier).

Fix the mis-spelling in the code.

Signed-off-by: Waiman Long <longman@redhat.com>
---
arch/x86/kernel/cpu/bugs.c | 6 +++---
arch/x86/kernel/process.h | 2 +-
2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index 500278f..a68b32c 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -54,7 +54,7 @@
u64 __ro_after_init x86_amd_ls_cfg_base;
u64 __ro_after_init x86_amd_ls_cfg_ssbd_mask;

-/* Control conditional STIPB in switch_to() */
+/* Control conditional STIBP in switch_to() */
DEFINE_STATIC_KEY_FALSE(switch_to_cond_stibp);
/* Control conditional IBPB in switch_mm() */
DEFINE_STATIC_KEY_FALSE(switch_mm_cond_ibpb);
@@ -379,12 +379,12 @@ static void __init spec_v2_user_print_cond(const char *reason, bool secure)
"always-on" : "conditional");
}

- /* If enhanced IBRS is enabled no STIPB required */
+ /* If enhanced IBRS is enabled no STIBP required */
if (spectre_v2_enabled == SPECTRE_V2_IBRS_ENHANCED)
return;

/*
- * If SMT is not possible or STIBP is not available clear the STIPB
+ * If SMT is not possible or STIBP is not available clear the STIBP
* mode.
*/
if (!smt_possible || !boot_cpu_has(X86_FEATURE_STIBP))
diff --git a/arch/x86/kernel/process.h b/arch/x86/kernel/process.h
index 898e97c..320ab97 100644
--- a/arch/x86/kernel/process.h
+++ b/arch/x86/kernel/process.h
@@ -19,7 +19,7 @@ static inline void switch_to_extra(struct task_struct *prev,
if (IS_ENABLED(CONFIG_SMP)) {
/*
* Avoid __switch_to_xtra() invocation when conditional
- * STIPB is disabled and the only different bit is
+ * STIBP is disabled and the only different bit is
* TIF_SPEC_IB. For CONFIG_SMP=n TIF_SPEC_IB is not
* in the TIF_WORK_CTXSW masks.
*/
--
1.8.3.1
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