From patchwork Mon Apr 25 07:11:44 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Zhao X-Patchwork-Id: 614297 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3qtcrt1TVSz9sdb for ; Mon, 25 Apr 2016 17:13:34 +1000 (AEST) Received: from localhost ([::1]:57957 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1auai4-0000Xr-1g for incoming@patchwork.ozlabs.org; Mon, 25 Apr 2016 03:13:32 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57456) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1auahV-0007wS-0k for qemu-devel@nongnu.org; Mon, 25 Apr 2016 03:12:57 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1auahR-0008Sa-En for qemu-devel@nongnu.org; Mon, 25 Apr 2016 03:12:56 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:54839) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1auahQ-0008S2-TL; Mon, 25 Apr 2016 03:12:53 -0400 Received: from 172.24.1.47 (EHLO szxeml426-hub.china.huawei.com) ([172.24.1.47]) by szxrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DFY19823; Mon, 25 Apr 2016 15:12:32 +0800 (CST) Received: from HGHY1Z002260041.china.huawei.com (10.177.16.142) by szxeml426-hub.china.huawei.com (10.82.67.181) with Microsoft SMTP Server id 14.3.235.1; Mon, 25 Apr 2016 15:12:20 +0800 From: Shannon Zhao To: , Date: Mon, 25 Apr 2016 15:11:44 +0800 Message-ID: <1461568306-14624-2-git-send-email-zhaoshenglong@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1461568306-14624-1-git-send-email-zhaoshenglong@huawei.com> References: <1461568306-14624-1-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=0001.0A020202.571DC360.00C6, 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: 28a8c3179e06aa895560db258b6ec982 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 119.145.14.65 Subject: [Qemu-devel] [PATCH v3 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+incoming=patchwork.ozlabs.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 Reviewed-by: Andrew Jones --- target-arm/cpu-qom.h | 2 ++ target-arm/kvm64.c | 5 +++++ 2 files changed, 7 insertions(+) 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);