From patchwork Thu Jan 12 21:42:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Michael Kelley (LINUX)" X-Patchwork-Id: 13099455 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 4971BC677F1 for ; Thu, 12 Jan 2023 21:50:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240396AbjALVt7 (ORCPT ); Thu, 12 Jan 2023 16:49:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41584 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240917AbjALVsi (ORCPT ); Thu, 12 Jan 2023 16:48:38 -0500 Received: from DM5PR00CU002-vft-obe.outbound.protection.outlook.com (mail-centralusazon11021027.outbound.protection.outlook.com [52.101.62.27]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B63A7138; Thu, 12 Jan 2023 13:43:04 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=VBMy1djo+Hct4j9CPHErVovksv0TZUyJPZa1FpQy3t0nuAuecHM4r+zvTHgvuJO++aZpvkVQlxTdd5bGx3RDfJrC0PAPSIj8YfpuVsVg02x9e5crE8IPIZLJSbCCxmfEhVNSCXpW8YHekZBtc7akZjGLuMsXBGKV/gxwZeHG8QClM6tsT/8muYqp7tlRSIpTZi9lGjBKV04fwwLj8HWZXbuFh4XdkL3ZirJ28vSogxbYrzyvkUdTBG/EBZirr7774yFXZlvy/K/ISQO4YwpqBMdkaAszc5oPW0lhkFIrMkaZEE0r2+kp7nu/w6YBo3kPN6dP3SCIgqupBAfwQX0qIw== 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=WMpXjLd+UjKJmPXYudC0MTw+Yv2SaNNAfvRbowIeYws=; b=et1NSPg6/TmRKt3RpdbQTrc/j/9MGN0M68mU3WEU0qjf9s97vAFuE8nPeUSBDSgkkQEZ7/8fRj27yD64FXRZoACNj6i1VFYAPIi3ByjJbxuk3UqBCPayY9FOyPSzeEN2opwxU6KG5XzlyguS687NHb/jv1Qin+xruXPls0le9BsA7K0CElFiuomqfkfQrKJMA4MU3PhNNNi/BKwVmOID27i/W4m0XxD+Ivc4G4GapuPbRIlIjKkF+pcbPITKlbPBK9qdpxyx8ASckQyc9Co2oaE9kVfflGiKtP6I3n/glA4H4XcTHBK0+Vx4PrmTCk7P7whfZJEyeRv+xdLaX7LDsQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=microsoft.com; dmarc=pass action=none header.from=microsoft.com; dkim=pass header.d=microsoft.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=WMpXjLd+UjKJmPXYudC0MTw+Yv2SaNNAfvRbowIeYws=; b=LUQXRwjatbHT5murwyU6bij+uBmV3BE1eW84NGIWOwdklPN+bYKGzNOlzRR0b5Bnu0K0ZW8/eK6afVSzSDEx3ZW2NNxQTaXcmk6YNnPgk99vo/OcB98/3Ze4Mtj90krBjjzO8h8xTF8SB7dbG4lsMI3+SyRxY/9KyTIUDIk4f/I= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=microsoft.com; Received: from DM6PR21MB1370.namprd21.prod.outlook.com (2603:10b6:5:16b::28) by MW4PR21MB1953.namprd21.prod.outlook.com (2603:10b6:303:74::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6023.4; Thu, 12 Jan 2023 21:43:02 +0000 Received: from DM6PR21MB1370.namprd21.prod.outlook.com ([fe80::ef06:2e2c:3620:46a7]) by DM6PR21MB1370.namprd21.prod.outlook.com ([fe80::ef06:2e2c:3620:46a7%8]) with mapi id 15.20.6023.006; Thu, 12 Jan 2023 21:43:02 +0000 From: Michael Kelley To: hpa@zytor.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, luto@kernel.org, peterz@infradead.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, lpieralisi@kernel.org, robh@kernel.org, kw@linux.com, bhelgaas@google.com, arnd@arndb.de, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, thomas.lendacky@amd.com, brijesh.singh@amd.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, Tianyu.Lan@microsoft.com, kirill.shutemov@linux.intel.com, sathyanarayanan.kuppuswamy@linux.intel.com, ak@linux.intel.com, isaku.yamahata@intel.com, dan.j.williams@intel.com, jane.chu@oracle.com, seanjc@google.com, tony.luck@intel.com, x86@kernel.org, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arch@vger.kernel.org, iommu@lists.linux.dev Cc: mikelley@microsoft.com Subject: [PATCH v5 03/14] Drivers: hv: Explicitly request decrypted in vmap_pfn() calls Date: Thu, 12 Jan 2023 13:42:22 -0800 Message-Id: <1673559753-94403-4-git-send-email-mikelley@microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1673559753-94403-1-git-send-email-mikelley@microsoft.com> References: <1673559753-94403-1-git-send-email-mikelley@microsoft.com> X-ClientProxiedBy: MW4PR04CA0057.namprd04.prod.outlook.com (2603:10b6:303:6a::32) To DM6PR21MB1370.namprd21.prod.outlook.com (2603:10b6:5:16b::28) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6PR21MB1370:EE_|MW4PR21MB1953:EE_ X-MS-Office365-Filtering-Correlation-Id: 36ca748f-9355-4c1b-f74b-08daf4e5fb1f 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:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DM6PR21MB1370.namprd21.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230022)(4636009)(366004)(39860400002)(136003)(346002)(376002)(396003)(451199015)(186003)(26005)(6512007)(82960400001)(82950400001)(6486002)(86362001)(52116002)(478600001)(2906002)(5660300002)(4326008)(8676002)(38350700002)(66556008)(66476007)(316002)(7406005)(38100700002)(10290500003)(41300700001)(921005)(36756003)(66946007)(7416002)(2616005)(8936002)(6506007)(6666004)(107886003)(83380400001);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 36ca748f-9355-4c1b-f74b-08daf4e5fb1f X-MS-Exchange-CrossTenant-AuthSource: DM6PR21MB1370.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Jan 2023 21:43:02.5473 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: n3CPEB9ICxjpk7jpfn2zQRQcSgFfJeoUp6SiwrPbzmWwKvfvD1gjQWiUKBomBZ7ThfU3kVxas0XGh/BqS0YLcQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR21MB1953 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Update vmap_pfn() calls to explicitly request that the mapping be for decrypted access to the memory. There's no change in functionality since the PFNs passed to vmap_pfn() are above the shared_gpa_boundary, implicitly producing a decrypted mapping. But explicitly requesting "decrypted" allows the code to work before and after changes that cause vmap_pfn() to mask the PFNs to being below the shared_gpa_boundary. Signed-off-by: Michael Kelley Reviewed-by: Tianyu Lan --- arch/x86/hyperv/ivm.c | 2 +- drivers/hv/ring_buffer.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/hyperv/ivm.c b/arch/x86/hyperv/ivm.c index f33c67e..5648efb 100644 --- a/arch/x86/hyperv/ivm.c +++ b/arch/x86/hyperv/ivm.c @@ -343,7 +343,7 @@ void *hv_map_memory(void *addr, unsigned long size) pfns[i] = vmalloc_to_pfn(addr + i * PAGE_SIZE) + (ms_hyperv.shared_gpa_boundary >> PAGE_SHIFT); - vaddr = vmap_pfn(pfns, size / PAGE_SIZE, PAGE_KERNEL_IO); + vaddr = vmap_pfn(pfns, size / PAGE_SIZE, pgprot_decrypted(PAGE_KERNEL)); kfree(pfns); return vaddr; diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c index c6692fd..2111e97 100644 --- a/drivers/hv/ring_buffer.c +++ b/drivers/hv/ring_buffer.c @@ -211,7 +211,7 @@ int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, ring_info->ring_buffer = (struct hv_ring_buffer *) vmap_pfn(pfns_wraparound, page_cnt * 2 - 1, - PAGE_KERNEL); + pgprot_decrypted(PAGE_KERNEL)); kfree(pfns_wraparound); if (!ring_info->ring_buffer)