From patchwork Fri Jan 27 11:39:15 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: 13118561 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 88C41C54EAA for ; Fri, 27 Jan 2023 12:06:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=N91+gW/R0PzPtiiA/VOHBC98W26E72YSjlfb5YQT+fI=; b=nTx7ySyFVbdQeQ 0RTTrbdHR5xUh/YPmMwbIdPTlxe5UcxKrUFY0MmV2r0h/Ef84ZHBczV8hm4HTZTuE6n0QJtHIbGdq PnwkNTb1EcgtiReDyhF+Gr/aQdI5YTvzZuaCs5bYqloKH1UtCK2a4Pd4pMoRUHZfWjb5+41rEmZ5W 9pDZjMiX7HIKw6jYz0tnTkEdxtJNAes4HBj0Jv5E+pDATH9Rr0uok9v3IEOCQ1fMPt+Q54E0B5Lv1 UsHon8gZYbAmsOi6t4aSErKWSYYCT3M9jkIpdYk/rpFGPa5EQkbCgbfoB7igQaGKrp1WUqMWeOaxk z+NJeIVK/xc9eN3xgE4Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pLNUO-00EOna-1P; Fri, 27 Jan 2023 12:05:52 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pLN5p-00ECxE-LT for linux-arm-kernel@lists.infradead.org; Fri, 27 Jan 2023 11:40:33 +0000 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 BC9521758; Fri, 27 Jan 2023 03:41:10 -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 3E5DB3F64C; Fri, 27 Jan 2023 03:40:26 -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 14/31] arm64: Add configuration step for Realms Date: Fri, 27 Jan 2023 11:39:15 +0000 Message-Id: <20230127113932.166089-15-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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230127_034029_793178_67A13869 X-CRM114-Status: GOOD ( 10.06 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Realm must be configured before it is created. Add the step to specify the parameters for the Realm. Signed-off-by: Suzuki K Poulose --- arm/aarch64/realm.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/arm/aarch64/realm.c b/arm/aarch64/realm.c index 3a4adb66..31543e55 100644 --- a/arm/aarch64/realm.c +++ b/arm/aarch64/realm.c @@ -2,6 +2,29 @@ #include + +static void realm_configure_hash_algo(struct kvm *kvm) +{ + struct kvm_cap_arm_rme_config_item hash_algo_cfg = { + .cfg = KVM_CAP_ARM_RME_CFG_HASH_ALGO, + .hash_algo = kvm->arch.measurement_algo, + }; + + struct kvm_enable_cap rme_config = { + .cap = KVM_CAP_ARM_RME, + .args[0] = KVM_CAP_ARM_RME_CONFIG_REALM, + .args[1] = (u64)&hash_algo_cfg, + }; + + if (ioctl(kvm->vm_fd, KVM_ENABLE_CAP, &rme_config) < 0) + die_perror("KVM_CAP_RME(KVM_CAP_ARM_RME_CONFIG_REALM) hash_algo"); +} + +static void realm_configure_parameters(struct kvm *kvm) +{ + realm_configure_hash_algo(kvm); +} + void kvm_arm_realm_create_realm_descriptor(struct kvm *kvm) { struct kvm_enable_cap rme_create_rd = { @@ -9,6 +32,7 @@ void kvm_arm_realm_create_realm_descriptor(struct kvm *kvm) .args[0] = KVM_CAP_ARM_RME_CREATE_RD, }; + realm_configure_parameters(kvm); if (ioctl(kvm->vm_fd, KVM_ENABLE_CAP, &rme_create_rd) < 0) die_perror("KVM_CAP_RME(KVM_CAP_ARM_RME_CREATE_RD)"); }