From patchwork Thu Aug 5 00:52:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuppuswamy Sathyanarayanan X-Patchwork-Id: 12420005 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7611EC432BE for ; Thu, 5 Aug 2021 00:54:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5988F61037 for ; Thu, 5 Aug 2021 00:54:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237642AbhHEAzC (ORCPT ); Wed, 4 Aug 2021 20:55:02 -0400 Received: from mga09.intel.com ([134.134.136.24]:27472 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237196AbhHEAyT (ORCPT ); Wed, 4 Aug 2021 20:54:19 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10066"; a="214027490" X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="214027490" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Aug 2021 17:53:49 -0700 X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="437617289" Received: from mjkendri-mobl.amr.corp.intel.com (HELO skuppusw-desk1.amr.corp.intel.com) ([10.254.17.117]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Aug 2021 17:53:47 -0700 From: Kuppuswamy Sathyanarayanan To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Peter Zijlstra , Andy Lutomirski , Bjorn Helgaas , Richard Henderson , Thomas Bogendoerfer , James E J Bottomley , Helge Deller , "David S . Miller" , Arnd Bergmann , Jonathan Corbet , "Michael S . Tsirkin" Cc: Peter H Anvin , Dave Hansen , Tony Luck , Dan Williams , Andi Kleen , Kirill Shutemov , Sean Christopherson , Kuppuswamy Sathyanarayanan , x86@kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-alpha@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, sparclinux@vger.kernel.org, linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, virtualization@lists.linux-foundation.org Subject: [PATCH v4 13/15] virtio: Use shared mappings for virtio PCI devices Date: Wed, 4 Aug 2021 17:52:16 -0700 Message-Id: <20210805005218.2912076-14-sathyanarayanan.kuppuswamy@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210805005218.2912076-1-sathyanarayanan.kuppuswamy@linux.intel.com> References: <20210805005218.2912076-1-sathyanarayanan.kuppuswamy@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Andi Kleen In a TDX guest the pci device mappings of virtio must be shared with the host, so use explicit shared mappings. Signed-off-by: Andi Kleen Signed-off-by: Kuppuswamy Sathyanarayanan --- drivers/virtio/virtio_pci_modern_dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/virtio/virtio_pci_modern_dev.c b/drivers/virtio/virtio_pci_modern_dev.c index e11ed748e661..6ec4c52258ce 100644 --- a/drivers/virtio/virtio_pci_modern_dev.c +++ b/drivers/virtio/virtio_pci_modern_dev.c @@ -83,7 +83,7 @@ vp_modern_map_capability(struct virtio_pci_modern_device *mdev, int off, return NULL; } - p = pci_iomap_range(dev, bar, offset, length); + p = pci_iomap_shared_range(dev, bar, offset, length); if (!p) dev_err(&dev->dev, "virtio_pci: unable to map virtio %u@%u on bar %i\n",