From patchwork Fri Feb 9 15:59:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 13551513 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 7EA9CC4828F for ; Fri, 9 Feb 2024 16:02:34 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rYTJQ-00016g-TF; Fri, 09 Feb 2024 11:01:12 -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 1rYTJM-00015a-JT for qemu-devel@nongnu.org; Fri, 09 Feb 2024 11:01:09 -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 1rYTJC-000656-82 for qemu-devel@nongnu.org; Fri, 09 Feb 2024 11:01:08 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1707494457; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=NBtPtUTLr4gACY8ONXPAct8+BhGOhDuuMtWRt+FduVo=; b=dLHvi3gSBwgZwAc/BSXaX//O/wM6fjcDrECX33z6a6TYioo8zYHzYrf06PhUiYecsYMBpk 2SMW5uwCuRJ1/C+NeyvRnA3rwx96ScGYOJT2Ddxihb7dvDVyz6mLLWsh7agd/oMq3+kUnh M2v7cV6Es8Q9hoke4NPffex0GY4fG8Q= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-532-LLLbaW6yNa-XtsvAFpG_rw-1; Fri, 09 Feb 2024 11:00:54 -0500 X-MC-Unique: LLLbaW6yNa-XtsvAFpG_rw-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (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 mimecast-mx02.redhat.com (Postfix) with ESMTPS id 6F8E48489A0; Fri, 9 Feb 2024 16:00:50 +0000 (UTC) Received: from laptop.redhat.com (unknown [10.39.192.197]) by smtp.corp.redhat.com (Postfix) with ESMTP id A82BF492BC6; Fri, 9 Feb 2024 16:00:48 +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, haibo.xu@linaro.org, peter.maydell@linaro.org, richard.henderson@linaro.org, maz@kernel.org, gkulkarni@amperecomputing.com Subject: [RFC v2 3/5] target/arm/kvm: Add helper to detect EL2 when using KVM Date: Fri, 9 Feb 2024 16:59:15 +0100 Message-ID: <20240209160039.677865-4-eric.auger@redhat.com> In-Reply-To: <20240209160039.677865-1-eric.auger@redhat.com> References: <20240209160039.677865-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.9 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: -23 X-Spam_score: -2.4 X-Spam_bar: -- X-Spam_report: (-2.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.269, 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_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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.c | 5 +++++ target/arm/kvm_arm.h | 12 ++++++++++++ 2 files changed, 17 insertions(+) diff --git a/target/arm/kvm.c b/target/arm/kvm.c index 81813030a5..0996866afe 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -1791,6 +1791,11 @@ 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); diff --git a/target/arm/kvm_arm.h b/target/arm/kvm_arm.h index cfaa0d9bc7..36e4b37ec0 100644 --- a/target/arm/kvm_arm.h +++ b/target/arm/kvm_arm.h @@ -188,6 +188,13 @@ bool kvm_arm_pmu_supported(void); */ bool kvm_arm_sve_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 @@ -235,6 +242,11 @@ static inline bool kvm_arm_sve_supported(void) return false; } +static inline bool kvm_arm_el2_supported(void) +{ + return false; +} + /* * These functions should never actually be called without KVM support. */