linux-kernel - [PATCH 10/22] x86/srso: Print mitigation for retbleed IBPB case

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Message-ID: <3836b2e27c9537d95ecce2a1e33e53315176ebc1.1692580085.git.jpoimboe@kernel.org>
Date:   Sun, 20 Aug 2023 18:19:07 -0700
From:   Josh Poimboeuf <jpoimboe@...nel.org>
To:     x86@...nel.org
Cc:     linux-kernel@...r.kernel.org, Borislav Petkov <bp@...en8.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Babu Moger <babu.moger@....com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>, David.Kaplan@....com,
        Andrew Cooper <andrew.cooper3@...rix.com>,
        Nikolay Borisov <nik.borisov@...e.com>,
        gregkh@...uxfoundation.org, Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH 10/22] x86/srso: Print mitigation for retbleed IBPB case

When overriding the requested mitigation with IBPB due to retbleed=ibpb,
print the actual mitigation.

Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
---
 arch/x86/kernel/cpu/bugs.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index da480c089739..4e332707a343 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -2427,7 +2427,7 @@ static void __init srso_select_mitigation(void)
 		if (has_microcode) {
 			pr_info("Retbleed IBPB mitigation enabled, using same for SRSO\n");
 			srso_mitigation = SRSO_MITIGATION_IBPB;
-			goto out;
+			goto out_print;
 		}
 	}
 
@@ -2487,7 +2487,8 @@ static void __init srso_select_mitigation(void)
 		break;
 	}
 
-	pr_info("%s%s\n", srso_strings[srso_mitigation], (has_microcode ? "" : ", no microcode"));
+out_print:
+	pr_info("%s%s\n", srso_strings[srso_mitigation], has_microcode ? "" : ", no microcode");
 
 out:
 	if (boot_cpu_has(X86_FEATURE_SBPB) && srso_mitigation == SRSO_MITIGATION_NONE)
-- 
2.41.0