[PATCH 4/3] x86/microcode: Remove unnecessary perf callback default-disable late loading
From: Borislav Petkov
Date: Wed May 25 2022 - 09:56:15 EST
From: Borislav Petkov <bp@xxxxxxx>
c93dc84cbe32 ("perf/x86: Add a microcode revision check for SNB-PEBS")
checks whether the microcode revision has fixed PEBS issues.
This can happen either:
1. At PEBS init time, where the early microcode has been loaded already
2. During late loading, in the microcode_check() callback.
So remove the unnecessary call in the microcode loader init routine.
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
---
arch/x86/kernel/cpu/microcode/core.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c
index 801b44ac3851..ad57e0e4d674 100644
--- a/arch/x86/kernel/cpu/microcode/core.c
+++ b/arch/x86/kernel/cpu/microcode/core.c
@@ -756,10 +756,7 @@ static int __init microcode_init(void)
cpus_read_lock();
mutex_lock(µcode_mutex);
-
error = subsys_interface_register(&mc_cpu_interface);
- if (!error)
- perf_check_microcode();
mutex_unlock(µcode_mutex);
cpus_read_unlock();
--
2.35.1
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette