linux-kernel - [tip: x86/bugs] x86/srso: Print mitigation for retbleed IBPB case

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Message-ID: <169780184235.3135.8762098632049050879.tip-bot2@tip-bot2>
Date:   Fri, 20 Oct 2023 11:37:22 -0000
From:   "tip-bot2 for Josh Poimboeuf" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Josh Poimboeuf <jpoimboe@...nel.org>,
        Ingo Molnar <mingo@...nel.org>,
        "Borislav Petkov (AMD)" <bp@...en8.de>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: x86/bugs] x86/srso: Print mitigation for retbleed IBPB case

The following commit has been merged into the x86/bugs branch of tip:

Commit-ID:     de9f5f7b06a5b7adbfdd8016f011120a4e928add
Gitweb:        https://git.kernel.org/tip/de9f5f7b06a5b7adbfdd8016f011120a4e928add
Author:        Josh Poimboeuf <jpoimboe@...nel.org>
AuthorDate:    Mon, 04 Sep 2023 22:04:51 -07:00
Committer:     Borislav Petkov (AMD) <bp@...en8.de>
CommitterDate: Fri, 20 Oct 2023 11:45:24 +02:00

x86/srso: Print mitigation for retbleed IBPB case

When overriding the requested mitigation with IBPB due to retbleed=ibpb,
print the mitigation in the usual format instead of a custom error
message.

Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Acked-by: Borislav Petkov (AMD) <bp@...en8.de>
Link: https://lore.kernel.org/r/ec3af919e267773d896c240faf30bfc6a1fd6304.1693889988.git.jpoimboe@kernel.org
---
 arch/x86/kernel/cpu/bugs.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index 235c0e0..6c47f37 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -2425,9 +2425,8 @@ static void __init srso_select_mitigation(void)
 
 	if (retbleed_mitigation == RETBLEED_MITIGATION_IBPB) {
 		if (has_microcode) {
-			pr_err("Retbleed IBPB mitigation enabled, using same for SRSO\n");
 			srso_mitigation = SRSO_MITIGATION_IBPB;
-			goto pred_cmd;
+			goto out;
 		}
 	}
 
@@ -2490,7 +2489,8 @@ static void __init srso_select_mitigation(void)
 		break;
 	}
 
-	pr_info("%s%s\n", srso_strings[srso_mitigation], (has_microcode ? "" : ", no microcode"));
+out:
+	pr_info("%s%s\n", srso_strings[srso_mitigation], has_microcode ? "" : ", no microcode");
 
 pred_cmd:
 	if ((!boot_cpu_has_bug(X86_BUG_SRSO) || srso_cmd == SRSO_CMD_OFF) &&