From patchwork Mon Jun 12 04:25:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Roth X-Patchwork-Id: 13275517 X-Patchwork-Delegate: herbert@gondor.apana.org.au 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 79367C7EE2E for ; Mon, 12 Jun 2023 04:42:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234835AbjFLEmR (ORCPT ); Mon, 12 Jun 2023 00:42:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46296 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234822AbjFLElh (ORCPT ); Mon, 12 Jun 2023 00:41:37 -0400 Received: from NAM11-DM6-obe.outbound.protection.outlook.com (mail-dm6nam11on2053.outbound.protection.outlook.com [40.107.223.53]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6F9FF1724; Sun, 11 Jun 2023 21:41:01 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=U681qMlhTPyX4zBte/1J08WgQdSXtpNRC8GHMG0lZwz6PaTHoR/NtPZddqCxvIKkJNbinV3auUC43G78ahxCQlVAzO4/LaB+MN/JutX4tTrpGoZARZ85v/SlxBMZl0XGGNDzoLqFi+ifT1D7yyqxfaCuF6QJtZlFamF7KG4Gkw+2wtRnh/38Ns3GhRPzX9VIytaxs04PcSOtWQWvz6OGKhiz2oVL7+h1PsFV8onvNjZhL/KnXMAwmG/mO3f8wbsN3cEpqX2dIuqn6oLVrQLbTEcEhGD6/QMDSW8+EB2Xkp4wqyW+1zXHlgNZhirHOegB0fWF6A0B6Nr+OkHr7YqIhg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=28cE1nFtQUfuCs5Hi5DEX8uBfUlxeTHiFFKicSfKOZU=; b=TDBUsMiWw0LylSoax6yvRNF1u01EEn+zzdc/m5xR3B8uYHl9U+zBn0I/dUGy/mvxpffJjWx2x9h7BHgf5HdruSoNDP9KgDAUG1mKwFvcoVcMe/Uui1Pdkw/Ym3jKZeMiQku3yJwFdBkUROBDsCnb2dCMkZJHMML4UyynAynRTf9P+26RJCzuvTpS4uUIQnY9g1KCADh3o4HVjTfNrJyuvT6vJzFoAoCPmgqJhIXb3tr6gxs5Z1ntL34lgTE1TjX/5lv+GNdGUeLTywcqevh95zEIz9Xn2SKI+wxqJurANE1AEw0auOlNzWwjnNIkQ/7jS/4Q+v3GmPhYoT2J9TGTYA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=28cE1nFtQUfuCs5Hi5DEX8uBfUlxeTHiFFKicSfKOZU=; b=P47QNxkfRU0oZJ6vNm7Wqx/m0Iu0Vsyv44k5mZOB4QiIDM6s+zu/0iVzPQIIBKAsTtkl08BMIk6V9Yaypy6ZwLoEzI1hX1KlKU63rUZuVqLv76eEoZW9aDKZmespl+2ZAIiI94DpLqCSiM93fLyWvUTP69ARxK3ATUAPGmlca+I= Received: from MW4PR04CA0233.namprd04.prod.outlook.com (2603:10b6:303:87::28) by LV2PR12MB5752.namprd12.prod.outlook.com (2603:10b6:408:14d::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6455.44; Mon, 12 Jun 2023 04:40:59 +0000 Received: from CO1PEPF000042A7.namprd03.prod.outlook.com (2603:10b6:303:87:cafe::4) by MW4PR04CA0233.outlook.office365.com (2603:10b6:303:87::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6477.33 via Frontend Transport; Mon, 12 Jun 2023 04:40:58 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by CO1PEPF000042A7.mail.protection.outlook.com (10.167.243.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6500.22 via Frontend Transport; Mon, 12 Jun 2023 04:40:58 +0000 Received: from localhost (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Sun, 11 Jun 2023 23:40:53 -0500 From: Michael Roth To: CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH RFC v9 31/51] KVM: Split out memory attribute xarray updates to helper function Date: Sun, 11 Jun 2023 23:25:39 -0500 Message-ID: <20230612042559.375660-32-michael.roth@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230612042559.375660-1-michael.roth@amd.com> References: <20230612042559.375660-1-michael.roth@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000042A7:EE_|LV2PR12MB5752:EE_ X-MS-Office365-Filtering-Correlation-Id: 3062944b-838f-4225-c420-08db6aff37b9 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230028)(4636009)(346002)(376002)(396003)(39860400002)(136003)(451199021)(46966006)(40470700004)(36840700001)(6916009)(4326008)(44832011)(316002)(7406005)(7416002)(70586007)(15650500001)(41300700001)(70206006)(186003)(16526019)(2906002)(54906003)(478600001)(8676002)(8936002)(5660300002)(6666004)(40460700003)(1076003)(82740400003)(356005)(81166007)(40480700001)(36860700001)(26005)(83380400001)(426003)(336012)(47076005)(36756003)(86362001)(82310400005)(2616005)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Jun 2023 04:40:58.5776 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3062944b-838f-4225-c420-08db6aff37b9 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1PEPF000042A7.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV2PR12MB5752 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org This will be useful to other callers that need to update memory attributes for things like setting up the initial private memory payload for a guest. Signed-off-by: Michael Roth --- include/linux/kvm_host.h | 1 + virt/kvm/kvm_main.c | 26 ++++++++++++++++++-------- 2 files changed, 19 insertions(+), 8 deletions(-) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 9a9d4141ba74..56055692cdfa 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -991,6 +991,7 @@ int kvm_init(unsigned vcpu_size, unsigned vcpu_align, struct module *module); void kvm_exit(void); void kvm_get_kvm(struct kvm *kvm); +int kvm_vm_set_region_attr(struct kvm *kvm, gfn_t start, gfn_t end, u64 attributes); bool kvm_get_kvm_safe(struct kvm *kvm); void kvm_put_kvm(struct kvm *kvm); bool file_is_kvm(struct file *file); diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 48beffca6b67..0c0a75affab6 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2466,12 +2466,28 @@ static void kvm_mem_attrs_changed(struct kvm *kvm, unsigned long attrs, kvm_flush_remote_tlbs(kvm); } +int kvm_vm_set_region_attr(struct kvm *kvm, gfn_t start, gfn_t end, + u64 attributes) +{ + gfn_t index; + void *entry; + + entry = attributes ? xa_mk_value(attributes) : NULL; + + for (index = start; index < end; index++) + if (xa_err(xa_store(&kvm->mem_attr_array, index, entry, + GFP_KERNEL_ACCOUNT))) + break; + + return index; +} +EXPORT_SYMBOL_GPL(kvm_vm_set_region_attr); + static int kvm_vm_ioctl_set_mem_attributes(struct kvm *kvm, struct kvm_memory_attributes *attrs) { gfn_t start, end; unsigned long i; - void *entry; /* flags is currently not used. */ if (attrs->flags) @@ -2486,8 +2502,6 @@ static int kvm_vm_ioctl_set_mem_attributes(struct kvm *kvm, start = attrs->address >> PAGE_SHIFT; end = (attrs->address + attrs->size - 1 + PAGE_SIZE) >> PAGE_SHIFT; - entry = attrs->attributes ? xa_mk_value(attrs->attributes) : NULL; - mutex_lock(&kvm->slots_lock); KVM_MMU_LOCK(kvm); @@ -2495,11 +2509,7 @@ static int kvm_vm_ioctl_set_mem_attributes(struct kvm *kvm, kvm_mmu_invalidate_range_add(kvm, start, end); KVM_MMU_UNLOCK(kvm); - for (i = start; i < end; i++) { - if (xa_err(xa_store(&kvm->mem_attr_array, i, entry, - GFP_KERNEL_ACCOUNT))) - break; - } + i = kvm_vm_set_region_attr(kvm, start, end, attrs->attributes); KVM_MMU_LOCK(kvm); if (i > start)