From patchwork Thu May 9 09:05:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shaoqin Huang X-Patchwork-Id: 13659576 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 08AFCC10F1A for ; Thu, 9 May 2024 09:06:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=GXNuVTCB2uxp1/MNhTOVLsCT73JYbzUehVU8ohJZNcQ=; b=oyU2QxwY1IDpYn IwU4PVIEb/0+jAKeLn8OtKI3ouOlU9Tk6KF07h0/+dCqeGZ0IPT/+96euavTFBaRLQacjTHhblnCu tcK9bv6JO7HZ5WHmi6oPoUMoxVx/N4TNkQnr86RY9C4fpltpqlEsxLqNHIPkaKLtYyrAr+P+3G1w7 ezuus43ymEu0P+UJZm5XQvAIsy2BpI/FolyR3SYeYOayvfemX9yTtrPBKQ9jPrKlOmE9xLX4yQ4e/ Vc3N6T65Z/s1EmXjk0Fwz/zgdt8DnhbmcPcEvv1xcJu7FERcIn0FCn7pKF4nHSCfzswGA2tWh21kQ o8QYkEfF/hdPbWDiH62A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s4ziy-00000000urp-0DAB; Thu, 09 May 2024 09:06:00 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s4ziv-00000000uqG-0gHj for linux-arm-kernel@lists.infradead.org; Thu, 09 May 2024 09:05:58 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1715245555; 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=+NXpcLQliZ9Cbk0k+GmVaEC4VBS+fcjmTXXyvgY9tgs=; b=bhcC7+LnQJPjiXLkunlo5AqKg7eq1u0ae48/cdizA1YEF2Xi+pOP2cyT5VaNN+SzW3BCYh uxLvTT5y0oftj08igSaztQNTXeJFpkwckz2YsNPy2ZSVZeZvxkhnG50K8b6Ku8DHuRKWLm pSbl0oXP+dIkrF30tH/ctByHmCUUiIE= 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-440-Wn9zvxr1NOqVJLTTDMODkw-1; Thu, 09 May 2024 05:05:53 -0400 X-MC-Unique: Wn9zvxr1NOqVJLTTDMODkw-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (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 5FEC3101A54F; Thu, 9 May 2024 09:05:53 +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 1889B100046E; Thu, 9 May 2024 09:05:53 +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 v8 1/3] KVM: selftests: aarch64: Add helper function for the vpmu vcpu creation Date: Thu, 9 May 2024 05:05:38 -0400 Message-Id: <20240509090544.2063429-2-shahuang@redhat.com> In-Reply-To: <20240509090544.2063429-1-shahuang@redhat.com> References: <20240509090544.2063429-1-shahuang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240509_020557_314037_47B8344A X-CRM114-Status: GOOD ( 18.26 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 | 32 ++++--------------- .../selftests/kvm/include/aarch64/vpmu.h | 28 ++++++++++++++++ 2 files changed, 34 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 d31b9f64ba14..68da44198719 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 @@ -407,18 +408,8 @@ 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)); @@ -430,26 +421,15 @@ 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); __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); +}