linux-kernel - [PATCH] arm64/cpuinfo: Show right CPU architecture information

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Date:   Tue, 19 Jan 2021 18:55:10 +0800
From:   Liguang Zhang <zhangliguang@...ux.alibaba.com>
To:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
Cc:     Anshuman Khandual <anshuman.khandual@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Mark Brown <broonie@...nel.org>, gustavoars@...nel.org,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Dave Martin <Dave.Martin@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Liguang Zhang <zhangliguang@...ux.alibaba.com>
Subject: [PATCH] arm64/cpuinfo: Show right CPU architecture information

CPU architecture is assigned to be a fixed value, it should be obtained
from midr register.

Signed-off-by: Liguang Zhang <zhangliguang@...ux.alibaba.com>
---
 arch/arm64/kernel/cpuinfo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c
index 77605aec25fe..0bd11e0fe9f2 100644
--- a/arch/arm64/kernel/cpuinfo.c
+++ b/arch/arm64/kernel/cpuinfo.c
@@ -191,7 +191,7 @@ static int c_show(struct seq_file *m, void *v)
 
 		seq_printf(m, "CPU implementer\t: 0x%02x\n",
 			   MIDR_IMPLEMENTOR(midr));
-		seq_printf(m, "CPU architecture: 8\n");
+		seq_printf(m, "CPU architecture: %d\n", MIDR_ARCHITECTURE(midr));
 		seq_printf(m, "CPU variant\t: 0x%x\n", MIDR_VARIANT(midr));
 		seq_printf(m, "CPU part\t: 0x%03x\n", MIDR_PARTNUM(midr));
 		seq_printf(m, "CPU revision\t: %d\n\n", MIDR_REVISION(midr));
-- 
2.19.1.6.gb485710b