linux-kernel - [tip: ras/core] x86/mce/intel: Use MCG_BANKCNT

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Message-ID: <173012422075.1442.15350639883981860592.tip-bot2@tip-bot2>
Date: Mon, 28 Oct 2024 14:03:40 -0000
From: "tip-bot2 for Qiuxu Zhuo" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Qiuxu Zhuo <qiuxu.zhuo@...el.com>, "Borislav Petkov (AMD)" <bp@...en8.de>,
 Tony Luck <tony.luck@...el.com>, Nikolay Borisov <nik.borisov@...e.com>,
 Sohil Mehta <sohil.mehta@...el.com>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: ras/core] x86/mce/intel: Use MCG_BANKCNT_MASK instead of 0xff

The following commit has been merged into the ras/core branch of tip:

Commit-ID:     754269ccf03d68da15b9e5cdd26a6464b81cec67
Gitweb:        https://git.kernel.org/tip/754269ccf03d68da15b9e5cdd26a6464b81cec67
Author:        Qiuxu Zhuo <qiuxu.zhuo@...el.com>
AuthorDate:    Fri, 25 Oct 2024 10:45:54 +08:00
Committer:     Borislav Petkov (AMD) <bp@...en8.de>
CommitterDate: Mon, 28 Oct 2024 14:27:34 +01:00

x86/mce/intel: Use MCG_BANKCNT_MASK instead of 0xff

Use the predefined MCG_BANKCNT_MASK macro instead of the hardcoded
0xff to mask the bank number bits.

No functional changes intended.

Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@...el.com>
Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Reviewed-by: Tony Luck <tony.luck@...el.com>
Reviewed-by: Nikolay Borisov <nik.borisov@...e.com>
Reviewed-by: Sohil Mehta <sohil.mehta@...el.com>
Link: https://lore.kernel.org/r/20241025024602.24318-3-qiuxu.zhuo@intel.com
---
 arch/x86/kernel/cpu/mce/intel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/mce/intel.c b/arch/x86/kernel/cpu/mce/intel.c
index f6103e6..b3cd2c6 100644
--- a/arch/x86/kernel/cpu/mce/intel.c
+++ b/arch/x86/kernel/cpu/mce/intel.c
@@ -94,7 +94,7 @@ static int cmci_supported(int *banks)
 	if (!boot_cpu_has(X86_FEATURE_APIC) || lapic_get_maxlvt() < 6)
 		return 0;
 	rdmsrl(MSR_IA32_MCG_CAP, cap);
-	*banks = min_t(unsigned, MAX_NR_BANKS, cap & 0xff);
+	*banks = min_t(unsigned, MAX_NR_BANKS, cap & MCG_BANKCNT_MASK);
 	return !!(cap & MCG_CMCI_P);
 }