From patchwork Tue Apr 9 03:03:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shaoqin Huang X-Patchwork-Id: 13621730 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DA7EC54900 for ; Tue, 9 Apr 2024 03:06:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712631996; cv=none; b=kTxdMmoCxR6nVcwftZSbPWHmwx2o7wjZMCx6lt8R233rkQ4qhqT5KG0y3mIwhH851rM61JL+EvRCr4xUXc4uEw6u6lBpEbDoHkc5nETHYq3ek6KNgSFeWHj2bietfPB88f/6O8nZ1aK0LCvJrtuWIbU7v/faM2XRG/EhFCICTUo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712631996; c=relaxed/simple; bh=guEa8Gu7AgWMHoz+deeYODTcNOKeQLiJjToQKhTp2QM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=hk1hyTZqVLqyHh1I5kDgfhTI1lyokn/Ga1gkrJ3e/Lz5IVy7dMRM3SMUS7vo/ZcAh7pjVS7ZCdqmsBbFsdisBGWn/ErF2Y4z+3yMM/eyh0nFhsanIwfzl8h9BeAwy4dq4Ygx8S6AagxPk3sh5LxNUkltVkNnj+51prOHxTQHHW0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=fj9DkhUa; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="fj9DkhUa" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1712631994; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=2YhhpUYjzkJ8Xe1BPLPOMrPAah757pDAo33eD0cMCSc=; b=fj9DkhUar7gmvhuOE+Lm+hzknzigAeR3cEfPOmRwKJLhFIQSGEw4WgFTLQ7ZDIWjizBD1l BqJHRGPedTohlcliTMKpwg9RXTIUaDBbrMnQX15qU3PLQ3xEaROHM3XNWt6a9s1oGW6ztE tVfFY3YRh390Q7xHoDlM31/EjqQZHf8= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-369-Lx8E0mP_Og-ewDSFX8VU3A-1; Mon, 08 Apr 2024 23:06:29 -0400 X-MC-Unique: Lx8E0mP_Og-ewDSFX8VU3A-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 1C2A11887313; Tue, 9 Apr 2024 03:06:29 +0000 (UTC) Received: from virt-mtcollins-01.lab.eng.rdu2.redhat.com (virt-mtcollins-01.lab.eng.rdu2.redhat.com [10.8.1.196]) by smtp.corp.redhat.com (Postfix) with ESMTP id CBEF817AB1; Tue, 9 Apr 2024 03:06:28 +0000 (UTC) From: Shaoqin Huang To: Oliver Upton , Marc Zyngier , kvmarm@lists.linux.dev Cc: Shaoqin Huang , Eric Auger , James Morse , Suzuki K Poulose , Zenghui Yu , Paolo Bonzini , Shuah Khan , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH v7 1/3] KVM: selftests: aarch64: Add helper function for the vpmu vcpu creation Date: Mon, 8 Apr 2024 23:03:14 -0400 Message-Id: <20240409030320.182591-2-shahuang@redhat.com> In-Reply-To: <20240409030320.182591-1-shahuang@redhat.com> References: <20240409030320.182591-1-shahuang@redhat.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.5 Create a vcpu with vpmu would be a common requirement for the vpmu test, so add the helper function for the vpmu vcpu creation. And use those helper function in the vpmu_counter_access.c test. Use this chance to delete the meaningless ASSERT about the pmuver, because KVM does not advertise an IMP_DEF PMU to guests. No functional changes intended. Reviewed-by: Eric Auger Signed-off-by: Shaoqin Huang --- .../kvm/aarch64/vpmu_counter_access.c | 33 ++++--------------- .../selftests/kvm/include/aarch64/vpmu.h | 28 ++++++++++++++++ 2 files changed, 35 insertions(+), 26 deletions(-) create mode 100644 tools/testing/selftests/kvm/include/aarch64/vpmu.h diff --git a/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c b/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c index f2fb0e3f14bc..33358797e7ec 100644 --- a/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c +++ b/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -410,18 +411,8 @@ static void guest_code(uint64_t expected_pmcr_n) /* Create a VM that has one vCPU with PMUv3 configured. */ static void create_vpmu_vm(void *guest_code) { - struct kvm_vcpu_init init; - uint8_t pmuver, ec; - uint64_t dfr0, irq = 23; - struct kvm_device_attr irq_attr = { - .group = KVM_ARM_VCPU_PMU_V3_CTRL, - .attr = KVM_ARM_VCPU_PMU_V3_IRQ, - .addr = (uint64_t)&irq, - }; - struct kvm_device_attr init_attr = { - .group = KVM_ARM_VCPU_PMU_V3_CTRL, - .attr = KVM_ARM_VCPU_PMU_V3_INIT, - }; + uint8_t ec; + uint64_t irq = 23; /* The test creates the vpmu_vm multiple times. Ensure a clean state */ memset(&vpmu_vm, 0, sizeof(vpmu_vm)); @@ -433,27 +424,17 @@ static void create_vpmu_vm(void *guest_code) guest_sync_handler); } - /* Create vCPU with PMUv3 */ - vm_ioctl(vpmu_vm.vm, KVM_ARM_PREFERRED_TARGET, &init); - init.features[0] |= (1 << KVM_ARM_VCPU_PMU_V3); - vpmu_vm.vcpu = aarch64_vcpu_add(vpmu_vm.vm, 0, &init, guest_code); + vpmu_vm.vcpu = vm_vcpu_add_with_vpmu(vpmu_vm.vm, 0, guest_code); vcpu_init_descriptor_tables(vpmu_vm.vcpu); + vpmu_vm.gic_fd = vgic_v3_setup(vpmu_vm.vm, 1, 64, GICD_BASE_GPA, GICR_BASE_GPA); __TEST_REQUIRE(vpmu_vm.gic_fd >= 0, "Failed to create vgic-v3, skipping"); - /* Make sure that PMUv3 support is indicated in the ID register */ - vcpu_get_reg(vpmu_vm.vcpu, - KVM_ARM64_SYS_REG(SYS_ID_AA64DFR0_EL1), &dfr0); - pmuver = FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_EL1_PMUVer), dfr0); - TEST_ASSERT(pmuver != ID_AA64DFR0_EL1_PMUVer_IMP_DEF && - pmuver >= ID_AA64DFR0_EL1_PMUVer_IMP, - "Unexpected PMUVER (0x%x) on the vCPU with PMUv3", pmuver); - /* Initialize vPMU */ - vcpu_ioctl(vpmu_vm.vcpu, KVM_SET_DEVICE_ATTR, &irq_attr); - vcpu_ioctl(vpmu_vm.vcpu, KVM_SET_DEVICE_ATTR, &init_attr); + vpmu_set_irq(vpmu_vm.vcpu, irq); + vpmu_init(vpmu_vm.vcpu); } static void destroy_vpmu_vm(void) diff --git a/tools/testing/selftests/kvm/include/aarch64/vpmu.h b/tools/testing/selftests/kvm/include/aarch64/vpmu.h new file mode 100644 index 000000000000..5ef6cb011e41 --- /dev/null +++ b/tools/testing/selftests/kvm/include/aarch64/vpmu.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#include + +static inline struct kvm_vcpu *vm_vcpu_add_with_vpmu(struct kvm_vm *vm, + uint32_t vcpu_id, + void *guest_code) +{ + struct kvm_vcpu_init init; + + /* Create vCPU with PMUv3 */ + vm_ioctl(vm, KVM_ARM_PREFERRED_TARGET, &init); + init.features[0] |= (1 << KVM_ARM_VCPU_PMU_V3); + + return aarch64_vcpu_add(vm, 0, &init, guest_code); +} + +static void vpmu_set_irq(struct kvm_vcpu *vcpu, int irq) +{ + kvm_device_attr_set(vcpu->fd, KVM_ARM_VCPU_PMU_V3_CTRL, + KVM_ARM_VCPU_PMU_V3_IRQ, &irq); +} + +static void vpmu_init(struct kvm_vcpu *vcpu) +{ + kvm_device_attr_set(vcpu->fd, KVM_ARM_VCPU_PMU_V3_CTRL, + KVM_ARM_VCPU_PMU_V3_INIT, NULL); +}