From nobody Mon Feb 9 10:29:11 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1498927874670404.1186956341586; Sat, 1 Jul 2017 09:51:14 -0700 (PDT) Received: from localhost ([::1]:55379 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dRLc1-0002Jl-Du for importer@patchew.org; Sat, 01 Jul 2017 12:51:13 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52810) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dRLYN-00084c-D3 for qemu-devel@nongnu.org; Sat, 01 Jul 2017 12:47:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dRLYM-0000SV-Dq for qemu-devel@nongnu.org; Sat, 01 Jul 2017 12:47:27 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50654) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dRLYI-0000Of-Ek; Sat, 01 Jul 2017 12:47:22 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CCA4F315FBD; Sat, 1 Jul 2017 16:47:20 +0000 (UTC) Received: from cav-thunderx1s-cn88xx-03.khw.lab.eng.bos.redhat.com (cav-thunderx1s-cn88xx-03.khw.lab.eng.bos.redhat.com [10.16.185.204]) by smtp.corp.redhat.com (Postfix) with ESMTP id 32E8760463; Sat, 1 Jul 2017 16:47:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com CCA4F315FBD Authentication-Results: ext-mx05.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx05.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=drjones@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com CCA4F315FBD From: Andrew Jones To: qemu-devel@nongnu.org, qemu-arm@nongnu.org Date: Sat, 1 Jul 2017 12:47:16 -0400 Message-Id: <1498927637-14496-3-git-send-email-drjones@redhat.com> In-Reply-To: <1498927637-14496-1-git-send-email-drjones@redhat.com> References: <1498927637-14496-1-git-send-email-drjones@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Sat, 01 Jul 2017 16:47:21 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 2/3] target/arm/kvm: split pmu init from creation 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: peter.maydell@linaro.org, agraf@suse.de Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" When adding a PMU with a userspace irqchip we only do the INIT stage of the device creation. Signed-off-by: Andrew Jones --- hw/arm/virt.c | 10 ++++++++-- target/arm/kvm32.c | 6 ++++++ target/arm/kvm64.c | 52 +++++++++++++++++++++++++-----------------------= ---- target/arm/kvm_arm.h | 6 ++++++ 4 files changed, 45 insertions(+), 29 deletions(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 9781e1cc5ed7..0cb8b479232d 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -492,8 +492,14 @@ static void fdt_add_pmu_nodes(const VirtMachineState *= vms) =20 CPU_FOREACH(cpu) { armcpu =3D ARM_CPU(cpu); - if (!arm_feature(&armcpu->env, ARM_FEATURE_PMU) || - (kvm_enabled() && !kvm_arm_pmu_create(cpu, PPI(VIRTUAL_PMU_IRQ= )))) { + if (!arm_feature(&armcpu->env, ARM_FEATURE_PMU)) { + return; + } + if (kvm_enabled() && + !kvm_arm_pmu_create(cpu, PPI(VIRTUAL_PMU_IRQ))) { + return; + } + if (kvm_enabled() && !kvm_arm_pmu_init(cpu)) { return; } } diff --git a/target/arm/kvm32.c b/target/arm/kvm32.c index 069da0c5fd10..a51695f25911 100644 --- a/target/arm/kvm32.c +++ b/target/arm/kvm32.c @@ -527,3 +527,9 @@ int kvm_arm_pmu_create(CPUState *cs, int irq) qemu_log_mask(LOG_UNIMP, "%s: not implemented\n", __func__); return 0; } + +int kvm_arm_pmu_init(CPUState *cs) +{ + qemu_log_mask(LOG_UNIMP, "%s: not implemented\n", __func__); + return 0; +} diff --git a/target/arm/kvm64.c b/target/arm/kvm64.c index a16abc8d129e..d94e0a04f015 100644 --- a/target/arm/kvm64.c +++ b/target/arm/kvm64.c @@ -381,46 +381,44 @@ static CPUWatchpoint *find_hw_watchpoint(CPUState *cp= u, target_ulong addr) return NULL; } =20 -static bool kvm_arm_pmu_support_ctrl(CPUState *cs, struct kvm_device_attr = *attr) -{ - return kvm_vcpu_ioctl(cs, KVM_HAS_DEVICE_ATTR, attr) =3D=3D 0; -} - -int kvm_arm_pmu_create(CPUState *cs, int irq) +static bool kvm_arm_pmu_set_attr(CPUState *cs, struct kvm_device_attr *att= r) { int err; =20 - struct kvm_device_attr attr =3D { - .group =3D KVM_ARM_VCPU_PMU_V3_CTRL, - .addr =3D (intptr_t)&irq, - .attr =3D KVM_ARM_VCPU_PMU_V3_IRQ, - .flags =3D 0, - }; - - if (!kvm_arm_pmu_support_ctrl(cs, &attr)) { - return 0; + err =3D kvm_vcpu_ioctl(cs, KVM_HAS_DEVICE_ATTR, attr); + if (err !=3D 0) { + return false; } =20 - err =3D kvm_vcpu_ioctl(cs, KVM_SET_DEVICE_ATTR, &attr); + err =3D kvm_vcpu_ioctl(cs, KVM_SET_DEVICE_ATTR, attr); if (err < 0) { fprintf(stderr, "KVM_SET_DEVICE_ATTR failed: %s\n", strerror(-err)); abort(); } =20 - attr.group =3D KVM_ARM_VCPU_PMU_V3_CTRL; - attr.attr =3D KVM_ARM_VCPU_PMU_V3_INIT; - attr.addr =3D 0; - attr.flags =3D 0; + return true; +} =20 - err =3D kvm_vcpu_ioctl(cs, KVM_SET_DEVICE_ATTR, &attr); - if (err < 0) { - fprintf(stderr, "KVM_SET_DEVICE_ATTR failed: %s\n", - strerror(-err)); - abort(); - } +int kvm_arm_pmu_init(CPUState *cs) +{ + struct kvm_device_attr attr =3D { + .group =3D KVM_ARM_VCPU_PMU_V3_CTRL, + .attr =3D KVM_ARM_VCPU_PMU_V3_INIT, + }; + + return kvm_arm_pmu_set_attr(cs, &attr); +} + +int kvm_arm_pmu_create(CPUState *cs, int irq) +{ + struct kvm_device_attr attr =3D { + .group =3D KVM_ARM_VCPU_PMU_V3_CTRL, + .addr =3D (intptr_t)&irq, + .attr =3D KVM_ARM_VCPU_PMU_V3_IRQ, + }; =20 - return 1; + return kvm_arm_pmu_set_attr(cs, &attr); } =20 static inline void set_feature(uint64_t *features, int feature) diff --git a/target/arm/kvm_arm.h b/target/arm/kvm_arm.h index 633d08828a5d..3382762aa023 100644 --- a/target/arm/kvm_arm.h +++ b/target/arm/kvm_arm.h @@ -196,6 +196,7 @@ int kvm_arm_sync_mpstate_to_qemu(ARMCPU *cpu); int kvm_arm_vgic_probe(void); =20 int kvm_arm_pmu_create(CPUState *cs, int irq); +int kvm_arm_pmu_init(CPUState *cs); =20 #else =20 @@ -209,6 +210,11 @@ static inline int kvm_arm_pmu_create(CPUState *cs, int= irq) return 0; } =20 +static inline int kvm_arm_pmu_init(CPUState *cs) +{ + return 0; +} + #endif =20 static inline const char *gic_class_name(void) --=20 1.8.3.1