From patchwork Tue Sep 26 09:31:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 13398947 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 96C86E7D273 for ; Tue, 26 Sep 2023 09:35:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234187AbjIZJfV (ORCPT ); Tue, 26 Sep 2023 05:35:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50094 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234086AbjIZJfT (ORCPT ); Tue, 26 Sep 2023 05:35:19 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 00D9DEB; Tue, 26 Sep 2023 02:35:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695720913; x=1727256913; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=TNdNMjdyY903iNYTtJMXeD069ihbZWkt8cAbuDlkz7w=; b=SYJIkBZYATV5PD2z9Y6q1I9kQXywGBUNlsYCawofz+aw7Yq2DSPpHGeY 8BvcTYd2CvEL0Vm+BNXOHMR/C4FLwFgc4Ijd0FC2M9ZmMh2ZXSacqTXzb /8q/8OOHp7xIIOaFycY7Yx1Ir3E+0vyib1NPNMaTuZysSODmgzSMdzhhn Nwuwbpps90FzODzcw9m50RkOO51w68VH1AX/mlxRQbIDdnkXP+0+1lezA cE7lW/Cy8yRaZu+rQrIgiwABhoHPNpq3RFFDOhDaj3iAAfR/9199cNMdy sOfIsv4nJGHx0fTC51FsukqLWlMxD03t+CgfIpIdKhugUp7aQ8+7jCJbU g==; X-IronPort-AV: E=McAfee;i="6600,9927,10843"; a="412442877" X-IronPort-AV: E=Sophos;i="6.03,177,1694761200"; d="scan'208";a="412442877" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Sep 2023 02:31:27 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10843"; a="725372986" X-IronPort-AV: E=Sophos;i="6.03,177,1694761200"; d="scan'208";a="725372986" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by orsmga006.jf.intel.com with ESMTP; 26 Sep 2023 02:31:22 -0700 From: Yi Liu To: alex.williamson@redhat.com, jgg@nvidia.com, kevin.tian@intel.com, robin.murphy@arm.com, baolu.lu@linux.intel.com Cc: joro@8bytes.org, cohuck@redhat.com, eric.auger@redhat.com, nicolinc@nvidia.com, kvm@vger.kernel.org, mjrosato@linux.ibm.com, chao.p.peng@linux.intel.com, yi.l.liu@intel.com, yi.y.sun@linux.intel.com, peterx@redhat.com, jasowang@redhat.com, shameerali.kolothum.thodi@huawei.com, lulu@redhat.com, suravee.suthikulpanit@amd.com, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, zhenzhong.duan@intel.com, joao.m.martins@oracle.com Subject: [RFC 0/3] vfio-pci support pasid attach/detach Date: Tue, 26 Sep 2023 02:31:18 -0700 Message-Id: <20230926093121.18676-1-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org This adds the pasid attach/detach uAPIs for userspace to attach/detach a PASID of a device to/from a given ioas/hwpt. Only vfio-pci driver is enabled in this series. After this series, PASID-capable devices bound with vfio-pci can report PASID capability to userspace and VM to enable PASID usages like Shared Virtual Addressing (SVA). This series first adds the helpers for pasid attach in vfio core and then add the device cdev ioctls for pasid attach/detach, finally exposes the device PASID capability to user. It depends on iommufd pasid attach/detach series [1]. Complete code can be found at [2] [1] https://lore.kernel.org/linux-iommu/20230926092651.17041-1-yi.l.liu@intel.com/ [2] https://github.com/yiliu1765/iommufd/tree/iommufd_pasid Regards, Yi Liu Kevin Tian (1): vfio-iommufd: Support pasid [at|de]tach for physical VFIO devices Yi Liu (2): vfio: Add VFIO_DEVICE_PASID_[AT|DE]TACH_IOMMUFD_PT vfio/pci: Expose PCIe PASID capability to userspace drivers/vfio/device_cdev.c | 45 ++++++++++++++++++++++++ drivers/vfio/iommufd.c | 48 ++++++++++++++++++++++++++ drivers/vfio/pci/vfio_pci.c | 2 ++ drivers/vfio/pci/vfio_pci_config.c | 2 +- drivers/vfio/vfio.h | 4 +++ drivers/vfio/vfio_main.c | 8 +++++ include/linux/vfio.h | 11 ++++++ include/uapi/linux/vfio.h | 55 ++++++++++++++++++++++++++++++ 8 files changed, 174 insertions(+), 1 deletion(-)