linux-kernel - [PATCH v2 1/2] cpu:Remove the print when the CONFIG_MITIGATE_SPECTRE_BRANCH

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20251020145118.1306-2-shechenglong@xfusion.com>
Date: Mon, 20 Oct 2025 22:51:16 +0800
From: shechenglong <shechenglong@...sion.com>
To: <linux-arm-kernel@...ts.infradead.org>
CC: <mark.rutland@....com>, <catalin.marinas@....com>, <will@...nel.org>,
	<linux-kernel@...r.kernel.org>, <stone.xulei@...sion.com>,
	<chenjialong@...sion.com>, <yuxiating@...sion.com>, shechenglong
	<shechenglong@...sion.com>
Subject: [PATCH v2 1/2] cpu:Remove the print when the  CONFIG_MITIGATE_SPECTRE_BRANCH_HISTORY Kconfig option is disabled.

Following the pattern established with other Spectre mitigations,
do not prints a message when the CONFIG_MITIGATE_SPECTRE_BRANCH_HISTORY
Kconfig option is disabled.

Link: https://patchwork.kernel.org/project/linux-arm-kernel/patch/20250918064907.1832-1-shechenglong@xfusion.com/
Suggested-by: Will Deacon <will@...nel.org>
Signed-off-by: shechenglong <shechenglong@...sion.com>
---
 arch/arm64/kernel/proton-pack.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c
index f9a32dfde006..d833b7c1bba8 100644
--- a/arch/arm64/kernel/proton-pack.c
+++ b/arch/arm64/kernel/proton-pack.c
@@ -1042,8 +1042,6 @@ void spectre_bhb_enable_mitigation(const struct arm64_cpu_capabilities *entry)

        if (arm64_get_spectre_v2_state() == SPECTRE_VULNERABLE) {
                /* No point mitigating Spectre-BHB alone. */
-       } else if (!IS_ENABLED(CONFIG_MITIGATE_SPECTRE_BRANCH_HISTORY)) {
-               pr_info_once("spectre-bhb mitigation disabled by compile time option\n");
        } else if (cpu_mitigations_off() || __nospectre_bhb) {
                pr_info_once("spectre-bhb mitigation disabled by command line option\n");
        } else if (supports_ecbhb(SCOPE_LOCAL_CPU)) {
--
2.33.0