From patchwork Fri Jan 27 11:39:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suzuki K Poulose X-Patchwork-Id: 13118453 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6852C61DA7 for ; Fri, 27 Jan 2023 11:41:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231805AbjA0LlT (ORCPT ); Fri, 27 Jan 2023 06:41:19 -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 ); 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 To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: suzuki.poulose@arm.com, Alexandru Elisei , Andrew Jones , Christoffer Dall , Fuad Tabba , Jean-Philippe Brucker , Joey Gouly , Marc Zyngier , Mark Rutland , Oliver Upton , Paolo Bonzini , Quentin Perret , Steven Price , Thomas Huth , Will Deacon , Zenghui Yu , 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 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org 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 --- 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)) {