linux-kernel - [PATCH] x86/microcode: Announce reload operation's completion

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Message-Id: <20190313110022.8229-1-bp@alien8.de>
Date:   Wed, 13 Mar 2019 12:00:22 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     Ingo Molnar <mingo@...nel.org>, x86@...nel.org
Subject: [PATCH] x86/microcode: Announce reload operation's completion

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

By popular demand, issue a single line to dmesg after the reload
operation completes to let the user know that a reload has at least been
attempted.

Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: x86@...nel.org
---
 arch/x86/kernel/cpu/microcode/core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c
index 97f9ada9ceda..5260185cbf7b 100644
--- a/arch/x86/kernel/cpu/microcode/core.c
+++ b/arch/x86/kernel/cpu/microcode/core.c
@@ -608,6 +608,8 @@ static int microcode_reload_late(void)
 	if (ret > 0)
 		microcode_check();
 
+	pr_info("Reload completed, microcode revision: 0x%x\n", boot_cpu_data.microcode);
+
 	return ret;
 }
 
-- 
2.21.0