linux-kernel - [PATCH] x86/umip: Print UMIP line only once

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Message-Id: <20181127205936.30331-1-bp@alien8.de>
Date:   Tue, 27 Nov 2018 21:59:36 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
        Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH] x86/umip: Print UMIP line only once

From: Borislav Petkov <bp@...e.de>

... instead of issuing it per CPU and flooding dmesg unnecessarily.

Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
---
 arch/x86/kernel/cpu/common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index ffb181f959d2..2c56b8066280 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -353,7 +353,7 @@ static __always_inline void setup_umip(struct cpuinfo_x86 *c)
 
 	cr4_set_bits(X86_CR4_UMIP);
 
-	pr_info("x86/cpu: Activated the Intel User Mode Instruction Prevention (UMIP) CPU feature\n");
+	pr_info_once("x86/cpu: Intel User Mode Instruction Prevention (UMIP) activated\n");
 
 	return;
 
-- 
2.19.1