From patchwork Thu Jan 16 08:32:16 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 13941451 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 D0EC4C02183 for ; Thu, 16 Jan 2025 08:36:38 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tYLKR-0007Td-1T; Thu, 16 Jan 2025 03:34:15 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tYLKO-0007Sq-Q8 for qemu-devel@nongnu.org; Thu, 16 Jan 2025 03:34:12 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tYLKN-0005Vt-EL for qemu-devel@nongnu.org; Thu, 16 Jan 2025 03:34:12 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1737016450; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=n27dYMHHYP8KJ5aV5O/00ZCPe/fSvvQCNytTtLkRnag=; b=KQHUrW4sjNyLacbsbbd/V6cHGgRf2qi8Jk/7XDDUfxmwwtiRgD8GuyR/C3zYraL7uRBRJR 0OcFTLGVIRlRAVF6UEsdQCtji0BpOzT6hlQvRqqgWKwKidqvO5/Dfmcib/0CHDRTvTnAPz qkHxnL1JL8jneA+femBcCzt7uqqEvhM= Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-204-p_iHrRzGMB6lzzfE1UPaIA-1; Thu, 16 Jan 2025 03:34:06 -0500 X-MC-Unique: p_iHrRzGMB6lzzfE1UPaIA-1 X-Mimecast-MFC-AGG-ID: p_iHrRzGMB6lzzfE1UPaIA Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (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 mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 79B0B1955DCD; Thu, 16 Jan 2025 08:34:04 +0000 (UTC) Received: from laptop.redhat.com (unknown [10.39.193.32]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 14CC030001BE; Thu, 16 Jan 2025 08:34:00 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, miguel.luis@oracle.com, peter.maydell@linaro.org, richard.henderson@linaro.org, maz@kernel.org, gkulkarni@amperecomputing.com, gankulkarni@os.amperecomputing.com Subject: [RFC v4 3/5] target/arm/kvm: Add helper to detect EL2 when using KVM Date: Thu, 16 Jan 2025 09:32:16 +0100 Message-ID: <20250116083339.674344-4-eric.auger@redhat.com> In-Reply-To: <20250116083339.674344-1-eric.auger@redhat.com> References: <20250116083339.674344-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -39 X-Spam_score: -4.0 X-Spam_bar: ---- X-Spam_report: (-4.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.141, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-1.793, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Haibo Xu Introduce query support for KVM_CAP_ARM_EL2. Signed-off-by: Haibo Xu Signed-off-by: Miguel Luis Signed-off-by: Eric Auger Reviewed-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daudé --- target/arm/kvm_arm.h | 12 ++++++++++++ target/arm/kvm.c | 5 +++++ 2 files changed, 17 insertions(+) diff --git a/target/arm/kvm_arm.h b/target/arm/kvm_arm.h index 05c3de8cd4..8c1314da20 100644 --- a/target/arm/kvm_arm.h +++ b/target/arm/kvm_arm.h @@ -193,6 +193,13 @@ bool kvm_arm_sve_supported(void); */ bool kvm_arm_mte_supported(void); +/** + * kvm_arm_el2_supported: + * + * Returns true if KVM can enable EL2 and false otherwise. + */ +bool kvm_arm_el2_supported(void); + /** * kvm_arm_get_max_vm_ipa_size: * @ms: Machine state handle @@ -247,6 +254,11 @@ static inline bool kvm_arm_mte_supported(void) return false; } +static inline bool kvm_arm_el2_supported(void) +{ + return false; +} + /* * These functions should never actually be called without KVM support. */ diff --git a/target/arm/kvm.c b/target/arm/kvm.c index a9444a2c7a..43362164eb 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -1797,6 +1797,11 @@ bool kvm_arm_aarch32_supported(void) return kvm_check_extension(kvm_state, KVM_CAP_ARM_EL1_32BIT); } +bool kvm_arm_el2_supported(void) +{ + return kvm_check_extension(kvm_state, KVM_CAP_ARM_EL2); +} + bool kvm_arm_sve_supported(void) { return kvm_check_extension(kvm_state, KVM_CAP_ARM_SVE);