Message ID | 20230127113932.166089-7-suzuki.poulose@arm.com |
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State | New |
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[2620:137:e000::1:20]) by mx.google.com with ESMTP id u2-20020a63a902000000b004de819c6255si4003592pge.132.2023.01.27.03.43.48; Fri, 27 Jan 2023 03:44:00 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233742AbjA0LlV (ORCPT <rfc822;lekhanya01809@gmail.com> + 99 others); Fri, 27 Jan 2023 06:41:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60248 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233855AbjA0LlK (ORCPT <rfc822;linux-kernel@vger.kernel.org>); Fri, 27 Jan 2023 06:41:10 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 9446B10250; Fri, 27 Jan 2023 03:40:41 -0800 (PST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 06F48165C; Fri, 27 Jan 2023 03:40:48 -0800 (PST) Received: from ewhatever.cambridge.arm.com (ewhatever.cambridge.arm.com [10.1.197.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 7406D3F64C; Fri, 27 Jan 2023 03:40:03 -0800 (PST) From: Suzuki K Poulose <suzuki.poulose@arm.com> To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: suzuki.poulose@arm.com, Alexandru Elisei <alexandru.elisei@arm.com>, Andrew Jones <andrew.jones@linux.dev>, Christoffer Dall <christoffer.dall@arm.com>, Fuad Tabba <tabba@google.com>, Jean-Philippe Brucker <jean-philippe@linaro.org>, Joey Gouly <Joey.Gouly@arm.com>, Marc Zyngier <maz@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Oliver Upton <oliver.upton@linux.dev>, Paolo Bonzini <pbonzini@redhat.com>, Quentin Perret <qperret@google.com>, Steven Price <steven.price@arm.com>, Thomas Huth <thuth@redhat.com>, Will Deacon <will@kernel.org>, Zenghui Yu <yuzenghui@huawei.com>, linux-coco@lists.linux.dev, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [RFC kvmtool 06/31] arm64: Check SVE capability on the VM instance Date: Fri, 27 Jan 2023 11:39:07 +0000 Message-Id: <20230127113932.166089-7-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230127113932.166089-1-suzuki.poulose@arm.com> References: <20230127112248.136810-1-suzuki.poulose@arm.com> <20230127113932.166089-1-suzuki.poulose@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: <linux-kernel.vger.kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1756175889089350753?= X-GMAIL-MSGID: =?utf-8?q?1756175889089350753?= |
Series |
arm64: Support for Arm Confidential Compute Architecture
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Commit Message
Suzuki K Poulose
Jan. 27, 2023, 11:39 a.m. UTC
Similar to PVtime, check the SVE capability on the VM instance
to account for the different VM types and the corresponding support.
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
arm/aarch64/kvm-cpu.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arm/aarch64/kvm-cpu.c b/arm/aarch64/kvm-cpu.c index c8be10b3..da809806 100644 --- a/arm/aarch64/kvm-cpu.c +++ b/arm/aarch64/kvm-cpu.c @@ -150,13 +150,15 @@ void kvm_cpu__select_features(struct kvm *kvm, struct kvm_vcpu_init *init) } /* Enable SVE if available */ - if (kvm__supports_extension(kvm, KVM_CAP_ARM_SVE)) + if (kvm__supports_vm_extension(kvm, KVM_CAP_ARM_SVE)) init->features[0] |= 1UL << KVM_ARM_VCPU_SVE; } int kvm_cpu__configure_features(struct kvm_cpu *vcpu) { - if (kvm__supports_extension(vcpu->kvm, KVM_CAP_ARM_SVE)) { + struct kvm *kvm = vcpu->kvm; + + if (kvm__supports_vm_extension(kvm, KVM_CAP_ARM_SVE)) { int feature = KVM_ARM_VCPU_SVE; if (ioctl(vcpu->vcpu_fd, KVM_ARM_VCPU_FINALIZE, &feature)) {