From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 BCC9EC54FCF for ; Sun, 22 Mar 2020 12:27:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9CFA020769 for ; Sun, 22 Mar 2020 12:27:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727285AbgCVM1d (ORCPT ); Sun, 22 Mar 2020 08:27:33 -0400 Received: from mga14.intel.com ([192.55.52.115]:23953 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727043AbgCVM1d (ORCPT ); Sun, 22 Mar 2020 08:27:33 -0400 IronPort-SDR: RZk2mM5o64gNf2wmRLEQMDAl4zHstOavOESo07JjzkUT950FtTlt9sT+jWun8gSQlXw5UPeNt6 n47y3M7Q+l3Q== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Mar 2020 05:27:32 -0700 IronPort-SDR: JTj7uc0RiWhatZgQOskzWH3SQgaANaBTrPWHGcjeB0aAHqUXXZDrkkbmGHYOeY5sGRaaqQUQso t0QFsS+FgF1g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,292,1580803200"; d="scan'208";a="356846585" Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by fmsmga001.fm.intel.com with ESMTP; 22 Mar 2020 05:27:32 -0700 From: "Liu, Yi L" To: alex.williamson@redhat.com, eric.auger@redhat.com Cc: kevin.tian@intel.com, jacob.jun.pan@linux.intel.com, joro@8bytes.org, ashok.raj@intel.com, yi.l.liu@intel.com, jun.j.tian@intel.com, yi.y.sun@intel.com, jean-philippe@linaro.org, peterx@redhat.com, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, hao.wu@intel.com Subject: [PATCH v1 1/2] vfio/pci: Expose PCIe PASID capability to guest Date: Sun, 22 Mar 2020 05:33:13 -0700 Message-Id: <1584880394-11184-2-git-send-email-yi.l.liu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1584880394-11184-1-git-send-email-yi.l.liu@intel.com> References: <1584880394-11184-1-git-send-email-yi.l.liu@intel.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Liu Yi L This patch exposes PCIe PASID capability to guest. Existing vfio_pci driver hides it from guest by setting the capability length as 0 in pci_ext_cap_length[]. This capability is required for vSVA enabling on pass-through PCIe devices. Cc: Kevin Tian CC: Jacob Pan Cc: Alex Williamson Cc: Eric Auger Cc: Jean-Philippe Brucker Signed-off-by: Liu Yi L --- drivers/vfio/pci/vfio_pci_config.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c index 90c0b80..4b9af99 100644 --- a/drivers/vfio/pci/vfio_pci_config.c +++ b/drivers/vfio/pci/vfio_pci_config.c @@ -95,7 +95,7 @@ static const u16 pci_ext_cap_length[PCI_EXT_CAP_ID_MAX + 1] = { [PCI_EXT_CAP_ID_LTR] = PCI_EXT_CAP_LTR_SIZEOF, [PCI_EXT_CAP_ID_SECPCI] = 0, /* not yet */ [PCI_EXT_CAP_ID_PMUX] = 0, /* not yet */ - [PCI_EXT_CAP_ID_PASID] = 0, /* not yet */ + [PCI_EXT_CAP_ID_PASID] = PCI_EXT_CAP_PASID_SIZEOF, }; /* -- 2.7.4