Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Dmitry Osipenko <dmitry.osipenko@collabora.com>
To:     Russell King <rmk+kernel@armlinux.org.uk>
Cc:     linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH v1] ARM: Silence proc-v7-bugs.c spam about disabled Spectre workarounds
Date:   Thu, 19 May 2022 19:13:10 +0300
Message-Id: <20220519161310.1489625-1-dmitry.osipenko@collabora.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
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Print message about disabled Spectre workarounds only once to stop
endless spam into KSMG each time CPU goes out from idling state.
This spam makes system unusable with CONFIG_HARDEN_BRANCH_PREDICTOR=n
for those who don't care about security and wants maximum performance.

Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
---
 arch/arm/mm/proc-v7-bugs.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/arm/mm/proc-v7-bugs.c b/arch/arm/mm/proc-v7-bugs.c
index fb9f3eb6bf48..f9730eba0632 100644
--- a/arch/arm/mm/proc-v7-bugs.c
+++ b/arch/arm/mm/proc-v7-bugs.c
@@ -108,8 +108,7 @@ static unsigned int spectre_v2_install_workaround(unsigned int method)
 #else
 static unsigned int spectre_v2_install_workaround(unsigned int method)
 {
-	pr_info("CPU%u: Spectre V2: workarounds disabled by configuration\n",
-		smp_processor_id());
+	pr_info_once("Spectre V2: workarounds disabled by configuration\n");
 
 	return SPECTRE_VULNERABLE;
 }
-- 
2.35.3