From patchwork Sat Oct 9 00:37:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuppuswamy Sathyanarayanan X-Patchwork-Id: 12546787 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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1820AC41535 for ; Sat, 9 Oct 2021 00:38:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 06FBB60F6F for ; Sat, 9 Oct 2021 00:38:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244327AbhJIAky (ORCPT ); Fri, 8 Oct 2021 20:40:54 -0400 Received: from mga02.intel.com ([134.134.136.20]:5261 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244120AbhJIAk3 (ORCPT ); Fri, 8 Oct 2021 20:40:29 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10131"; a="213756564" X-IronPort-AV: E=Sophos;i="5.85,358,1624345200"; d="scan'208";a="213756564" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Oct 2021 17:37:53 -0700 X-IronPort-AV: E=Sophos;i="5.85,358,1624345200"; d="scan'208";a="624905427" Received: from dmsojoza-mobl3.amr.corp.intel.com (HELO skuppusw-desk1.amr.corp.intel.com) ([10.251.135.62]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Oct 2021 17:37:51 -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" , Paolo Bonzini , David Hildenbrand , Andrea Arcangeli , Josh Poimboeuf Cc: Peter H Anvin , Dave Hansen , Tony Luck , Dan Williams , Andi Kleen , Kirill Shutemov , Sean Christopherson , Kuppuswamy Sathyanarayanan , 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 v5 14/16] virtio: Use shared mappings for virtio PCI devices Date: Fri, 8 Oct 2021 17:37:09 -0700 Message-Id: <20211009003711.1390019-15-sathyanarayanan.kuppuswamy@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211009003711.1390019-1-sathyanarayanan.kuppuswamy@linux.intel.com> References: <20211009003711.1390019-1-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 --- Changes since v4: * Replaced pci_iomap_shared_range() with pci_iomap_host_shared_range(). 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..f29bf45a4642 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_host_shared_range(dev, bar, offset, length); if (!p) dev_err(&dev->dev, "virtio_pci: unable to map virtio %u@%u on bar %i\n",