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target/arm: Use FIELD macros for clearing ID_DFR0 PERFMON field

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We already define FIELD macros for ID_DFR0, so use them in the
one place where we're doing direct bit value manipulation.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-8-peter.maydell@linaro.org
(cherry-picked from commit d52c061e541982a3663ad5c65bd3b518dbe85b87)
Signed-off-by: Peng Liang <liangpeng10@huawei.com>
This commit is contained in:
Huawei Technologies Co., Ltd 2020-02-14 17:51:02 +00:00 committed by Euler Robot
parent 0aa9d98ac5
commit 3333d474e1
1 changed files with 38 additions and 0 deletions
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38
target-arm-Use-FIELD-macros-for-clearing-ID_DFR0-PER.patch Normal file
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@ -0,0 +1,38 @@
From 47338f4586001deb0e8cb04016e091ee7b2a24da Mon Sep 17 00:00:00 2001
From: Peter Maydell <peter.maydell@linaro.org>
Date: Fri, 14 Feb 2020 17:51:02 +0000
Subject: [PATCH] target/arm: Use FIELD macros for clearing ID_DFR0 PERFMON
field
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We already define FIELD macros for ID_DFR0, so use them in the
one place where we're doing direct bit value manipulation.
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200214175116.9164-8-peter.maydell@linaro.org
(cherry-picked from commit d52c061e541982a3663ad5c65bd3b518dbe85b87)
Signed-off-by: Peng Liang <liangpeng10@huawei.com>
---
target/arm/cpu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index dbd05e0113..6ad211b138 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -1523,7 +1523,7 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
#endif
} else {
cpu->id_aa64dfr0 = FIELD_DP64(cpu->id_aa64dfr0, ID_AA64DFR0, PMUVER, 0);
- cpu->id_dfr0 &= ~(0xf << 24);
+ cpu->id_dfr0 = FIELD_DP32(cpu->id_dfr0, ID_DFR0, PERFMON, 0);
cpu->pmceid0 = 0;
cpu->pmceid1 = 0;
}
--
2.23.0