From patchwork Sat Apr 23 10:04:13 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Zhao X-Patchwork-Id: 66523 Delivered-To: patch@linaro.org Received: by 10.140.93.198 with SMTP id d64csp105907qge; Sat, 23 Apr 2016 03:06:20 -0700 (PDT) X-Received: by 10.140.89.19 with SMTP id u19mr25303759qgd.90.1461405980816; Sat, 23 Apr 2016 03:06:20 -0700 (PDT) Return-Path: Received: from lists.gnu.org (lists.gnu.org. [2001:4830:134:3::11]) by mx.google.com with ESMTPS id a88si5556776qgf.53.2016.04.23.03.06.20 for (version=TLS1 cipher=AES128-SHA bits=128/128); Sat, 23 Apr 2016 03:06:20 -0700 (PDT) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 2001:4830:134:3::11 as permitted sender) client-ip=2001:4830:134:3::11; Authentication-Results: mx.google.com; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 2001:4830:134:3::11 as permitted sender) smtp.mailfrom=qemu-devel-bounces+patch=linaro.org@nongnu.org Received: from localhost ([::1]:50884 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1atuSC-0007uU-2D for patch@linaro.org; Sat, 23 Apr 2016 06:06:20 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50975) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1atuQw-000658-Bu for qemu-devel@nongnu.org; Sat, 23 Apr 2016 06:05:03 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1atuQs-0005ud-FU for qemu-devel@nongnu.org; Sat, 23 Apr 2016 06:05:02 -0400 Received: from szxga01-in.huawei.com ([58.251.152.64]:56161) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1atuQr-0005tn-DC; Sat, 23 Apr 2016 06:04:58 -0400 Received: from 172.24.1.47 (EHLO szxeml422-hub.china.huawei.com) ([172.24.1.47]) by szxrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DJI66788; Sat, 23 Apr 2016 18:04:38 +0800 (CST) Received: from HGHY1Z002260041.china.huawei.com (10.177.16.142) by szxeml422-hub.china.huawei.com (10.82.67.152) with Microsoft SMTP Server id 14.3.235.1; Sat, 23 Apr 2016 18:04:26 +0800 From: Shannon Zhao To: , Date: Sat, 23 Apr 2016 18:04:13 +0800 Message-ID: <1461405855-15576-2-git-send-email-zhaoshenglong@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1461405855-15576-1-git-send-email-zhaoshenglong@huawei.com> References: <1461405855-15576-1-git-send-email-zhaoshenglong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.16.142] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020204.571B48B7.0191, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 1323616837cadf6aa8f61f82ba3ea05d X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 58.251.152.64 Subject: [Qemu-devel] [PATCH v2 1/3] target-arm: kvm64: set guest PMUv3 feature bit if supported X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: drjones@redhat.com, shannon.zhao@linaro.org, qemu-devel@nongnu.org, peter.huangpeng@huawei.com Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" From: Shannon Zhao Check if kvm supports guest PMUv3. If so, set the corresponding feature bit for vcpu. Signed-off-by: Shannon Zhao --- target-arm/cpu-qom.h | 2 ++ target-arm/kvm64.c | 5 +++++ 2 files changed, 7 insertions(+) -- 2.0.4 Reviewed-by: Andrew Jones diff --git a/target-arm/cpu-qom.h b/target-arm/cpu-qom.h index 1061c08..93aa6a4 100644 --- a/target-arm/cpu-qom.h +++ b/target-arm/cpu-qom.h @@ -105,6 +105,8 @@ typedef struct ARMCPU { bool powered_off; /* CPU has security extension */ bool has_el3; + /* CPU has PMU (Performance Monitor Unit) */ + bool has_pmu; /* CPU has memory protection unit */ bool has_mpu; diff --git a/target-arm/kvm64.c b/target-arm/kvm64.c index e8527bf..b364789 100644 --- a/target-arm/kvm64.c +++ b/target-arm/kvm64.c @@ -461,6 +461,11 @@ int kvm_arch_init_vcpu(CPUState *cs) if (!arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) { cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_EL1_32BIT; } + if (kvm_irqchip_in_kernel() && + kvm_check_extension(cs->kvm_state, KVM_CAP_ARM_PMU_V3)) { + cpu->has_pmu = true; + cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_PMU_V3; + } /* Do KVM_ARM_VCPU_INIT ioctl */ ret = kvm_arm_vcpu_init(cs);