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 DA6E3C636BD for ; Fri, 27 Jan 2023 12:20:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233846AbjA0MUF (ORCPT ); Fri, 27 Jan 2023 07:20:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53344 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234012AbjA0MT3 (ORCPT ); Fri, 27 Jan 2023 07:19:29 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 387E783251; Fri, 27 Jan 2023 04:16:08 -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 D149115BF; Fri, 27 Jan 2023 03:41:27 -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 4AF653F64C; Fri, 27 Jan 2023 03:40:43 -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 20/31] arm64: Finalize realm VCPU after reset Date: Fri, 27 Jan 2023 11:39:21 +0000 Message-Id: <20230127113932.166089-21-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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alexandru Elisei In order to run a VCPU belonging to a realm, that VCPU must be in the finalized state. Finalize the CPU after reset, since kvmtool won't be touching the VCPU state afterwards. Signed-off-by: Alexandru Elisei Signed-off-by: Suzuki K Poulose --- arm/aarch64/kvm-cpu.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arm/aarch64/kvm-cpu.c b/arm/aarch64/kvm-cpu.c index 37f9aa9d..24e570c4 100644 --- a/arm/aarch64/kvm-cpu.c +++ b/arm/aarch64/kvm-cpu.c @@ -128,6 +128,13 @@ static void reset_vcpu_aarch64(struct kvm_cpu *vcpu) if (ioctl(vcpu->vcpu_fd, KVM_SET_ONE_REG, ®) < 0) die_perror("KVM_SET_ONE_REG failed (pc)"); } + + if (kvm->cfg.arch.is_realm) { + int feature = KVM_ARM_VCPU_REC; + + if (ioctl(vcpu->vcpu_fd, KVM_ARM_VCPU_FINALIZE, &feature) < 0) + die_perror("KVM_ARM_VCPU_FINALIZE(KVM_ARM_VCPU_REC)"); + } } void kvm_cpu__select_features(struct kvm *kvm, struct kvm_vcpu_init *init) -- 2.34.1