From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 5E073572667; Tue, 8 Sep 2026 16:23:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788884601; cv=none; b=rT0hp8BWyJUgArwwdvjFfOvxU6VepdiitVL4yw7TPsXmLk2KaSzldsnt2GTdg5tAzZIpvP10FMFdUbw1mXelkCJxn9Y15qwT5ced0SE6opXm5vnl3xbD6UAl543NnxBhAROLyzcYwd5ck685vXw65Du3zD9rWMiZvcIj660G4Ew= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788884601; c=relaxed/simple; bh=CgnhUkjRCuK5Hn3XRTDM/Af/LZ4kv2s2gn1J+cXjimM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=meZhLiJmH+CnmK3R4Dc3weRUpZil6941qKB9r1d7o60SaC6z0noNl83o2rzeMkHxbd3zzMe22sEZY+ja2p2wciEA/hDjSROaCJGnJSFuIbo8ldA5fM4SeMUcnEdAO6Hhf/AO1CoCTVnAWmfJn6sI0kLkbYDDTWUBalmHlhz3Y6g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=vfFLvsGB; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="vfFLvsGB" 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 E6C791476; Tue, 8 Sep 2026 09:23:13 -0700 (PDT) Received: from ewhatever.cambridge.arm.com (ewhatever.cambridge.arm.com [10.2.197.99]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 526EB3F7B4; Tue, 8 Sep 2026 09:23:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1788884597; bh=CgnhUkjRCuK5Hn3XRTDM/Af/LZ4kv2s2gn1J+cXjimM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vfFLvsGBSaN2oezQYfkot3Y+FXdmwUIVuwYRthDibzcWmcx2Frlxv4hVZczohPmB/ y4mjeTNNINippo3RnXpp+1FIM87EkCd6qbR8ywk2NgCHN7lLREQf5b2ji+VIf666KR 9V0EM0n9MnrdzvudZDiIvBAezfm9jn1NPqQ+uDmY= From: Suzuki K Poulose To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: maz@kernel.org, will@kernel.org, catalin.marinas@arm.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, steven.price@arm.com, aneesh.kumar@kernel.org, oupton@kernel.org, gshan@redhat.com, joey.gouly@arm.com, tabba@google.com, yuzenghui@huawei.com, linux-coco@lists.linux.dev, gankulkarni@os.amperecomputing.com, sdonthineni@nvidia.com, alpergun@google.com, fj0570is@fujitsu.com, WeiLin.Chang@arm.com, lpieralisi@kernel.org, enju.kohei@fujitsu.com, Suzuki K Poulose Subject: [PATCH v17 08/20] KVM: arm64: coco: Add a helper to check if a VM is confidential compute guest Date: Tue, 8 Sep 2026 17:22:11 +0100 Message-ID: <20260908162223.1683432-9-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260908162223.1683432-1-suzuki.poulose@arm.com> References: <20260908162223.1683432-1-suzuki.poulose@arm.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Both protected VMs and Realms are additionally secured by the trusted hypervisor guarantees. Add a helper to detect if a given VM is a coco guest. Base this off the ordering of the VM flavor type. Signed-off-by: Suzuki K Poulose --- arch/arm64/include/asm/kvm_host.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 824a3383409c8..020aef5a1b698 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -316,6 +316,7 @@ enum kvm_arm_vm_flavor { VM_NVHE, VM_VHE, VM_PKVM, /* Normal guests on PKVM */ + MARKER(__VM_CONFIDENTIAL), VM_PROTECTED_PKVM, /* Protected VM */ VM_REALM, /* CCA */ VM_FLAVOR_MAX, @@ -1524,9 +1525,11 @@ struct kvm *kvm_arch_alloc_vm(void); #define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS_RANGE +#define kvm_vm_is_confidential(kvm) ((kvm)->arch.vm_flavor >= __VM_CONFIDENTIAL) #define kvm_vm_is_protected(kvm) ((kvm)->arch.vm_flavor == VM_PROTECTED_PKVM) #define kvm_vm_is_realm(kvm) ((kvm)->arch.vm_flavor == VM_REALM) +#define vcpu_is_confidential(vcpu) kvm_vm_is_confidential((vcpu)->kvm) #define vcpu_is_protected(vcpu) kvm_vm_is_protected((vcpu)->kvm) #define vcpu_is_rec(vcpu) kvm_vm_is_realm((vcpu)->kvm) -- 2.43.0