linux-kernel - [PATCH] x86/mce: show the status of cmci

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Message-Id: <1566800164-6428-1-git-send-email-lixiaochun.2888@163.com>
Date:   Mon, 26 Aug 2019 14:16:04 +0800
From:   Xiaochun Lee <lixiaochun.2888@....com>
To:     tony.luck@...el.com, bp@...en8.de
Cc:     tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
        x86@...nel.org, linux-edac@...r.kernel.org,
        linux-kernel@...r.kernel.org, Xiaochun Lee <lixc17@...ovo.com>
Subject: [PATCH] x86/mce: show the status of cmci_disabled to user

From: Xiaochun Lee <lixc17@...ovo.com>

When enabled Firmware First mode in UEFI, we need to
set the cmci_disabled and ignore_ce in mca cfg
that users can check correct status from
"/sys/devices/system/machinecheck/machinecheckXXX/cmci_disabled"

Signed-off-by: Xiaochun Lee <lixc17@...ovo.com>
---
 arch/x86/kernel/cpu/mce/core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index 743370e..932c701 100644
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c
@@ -1909,6 +1909,8 @@ static void __mce_disable_bank(void *arg)
 	int bank = *((int *)arg);
 	__clear_bit(bank, this_cpu_ptr(mce_poll_banks));
 	cmci_disable_bank(bank);
+	mca_cfg.cmci_disabled = true;
+	mca_cfg.ignore_ce = true;
 }
 
 void mce_disable_bank(int bank)
-- 
1.8.3.1