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: 49276 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp787313wrn; Fri, 27 Jan 2023 03:44:01 -0800 (PST) X-Google-Smtp-Source: AMrXdXuS+kMJxIzmFkJQs9nUoxbhT5jdn+vnVrpnAB2rQrbiHm6r8255KDU9xpUxdQsGagv8UPTV X-Received: by 2002:a05:6a20:3d11:b0:b9:6932:7d71 with SMTP id y17-20020a056a203d1100b000b969327d71mr37185791pzi.26.1674819840781; Fri, 27 Jan 2023 03:44:00 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1674819840; cv=none; d=google.com; s=arc-20160816; b=UaI/1KXI9E93W8F9MCXNItEe/p8lp3AIFZfeVQg7uSdWyyS2CuOC0CDXpUf6za2Csh W9Lm0NF5k+GweQ78FOafzNaaWeQo2HTaExsNIpcSQaAtRUdUXdes+3PASYHwrTS2BzDc 6MgrTfJWfi79mzDfLLf5K7pQ9J8D+g27wuseTwkcyHdQdDIej1AdcRm55aaOcAXQNl+7 xJ8UPcLXkxwdBz13atY0H91kS0vBD4phsk/UNIOIQjxKrTXFTLdvvJdZqETVzY2QUhGC CgIYEIynsib7EX4uH+38PNbBM7Hb5w99FLvzYVWZoopf0WLeW8GeWJM5E2WBUV0jwwdC 9arg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=7+bsampohgBv39ASPzSj9WgXs7rydq/Xscviu/N5stE=; b=IYJRCFlihcGw/egpXsfeKYd+z7eNLlmG13lRF3Mj/PbmqLZsEtslYE8AVYgyY8A/Zw 95o/OmM0z1oKtCo4kxv4x1EVrlL9H8g3VMPlsZ4k0SBOBcP77CdktoV0Snq1Oz+kpOJL /KJ4uP1ksCznlavUGI02mmUYZMP/5gwum3iJ8yw2CF7dt8iNbWqMZEXPE+a4TuXeGJg0 QgMRSKYRQIgrV+Ri0wbPcjC6UfjJaucH4LgRWGAxiTlXExGf70QMIYuOoqvjg1bHo4QE c/+Ia1GWdFizfVir2zUx/B8TlQPIC6+tRsbdH3G0CT1OtgBXEyxYxZP+tKhkNLrQfxrt 54mg== ARC-Authentication-Results: i=1; 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: from out1.vger.email (out1.vger.email. [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 + 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 ); 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 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: 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?= 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)) {