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=-3.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=no 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 EF631C3A59D for ; Sat, 17 Aug 2019 00:13:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BE6EB2077C for ; Sat, 17 Aug 2019 00:13:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725945AbfHQANY (ORCPT ); Fri, 16 Aug 2019 20:13:24 -0400 Received: from mga05.intel.com ([192.55.52.43]:12917 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725911AbfHQANX (ORCPT ); Fri, 16 Aug 2019 20:13:23 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 Aug 2019 17:13:22 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,395,1559545200"; d="scan'208";a="168194997" Received: from skuppusw-desk.jf.intel.com ([10.54.74.33]) by orsmga007.jf.intel.com with ESMTP; 16 Aug 2019 17:13:22 -0700 From: sathyanarayanan.kuppuswamy@linux.intel.com To: bhelgaas@google.com Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ashok.raj@intel.com, keith.busch@intel.com, sathyanarayanan.kuppuswamy@linux.intel.com Subject: [PATCH v6 0/8] Fix PF/VF dependency issue Date: Fri, 16 Aug 2019 17:10:14 -0700 Message-Id: X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Kuppuswamy Sathyanarayanan Current implementation of ATS, PASID, PRI does not handle VF dependencies correctly. Following patches addresses this issue. Changes since v5: * Created new patches for PRI/PASID capability caching. * Removed individual locks (pri_lock, pasid_lock) and added common resource lock to synchronize PRI/PASID updates between PF/VF. * Addressed comments from Bjorn Helgaas. Changes since v4: * Defined empty functions for pci_pri_init() and pci_pasid_init() for cases where CONFIG_PCI_PRI and CONFIG_PCI_PASID are not enabled. Changes since v3: * Fixed critical path (lock context) in pci_restore_*_state functions. Changes since v2: * Added locking mechanism to synchronize accessing PF registers in VF. * Removed spec compliance checks in patches. * Addressed comments from Bjorn Helgaas. Changes since v1: * Added more details about the patches in commit log. * Removed bulk spec check patch. * Addressed comments from Bjorn Helgaas. Kuppuswamy Sathyanarayanan (8): PCI/ATS: Fix pci_prg_resp_pasid_required() dependency issues PCI/ATS: Cache PRI capability check result PCI/ATS: Cache PASID capability check result PCI/IOV: Add pci_physfn_reslock/unlock() interfaces PCI/ATS: Add PRI support for PCIe VF devices PCI/ATS: Add PASID support for PCIe VF devices PCI/ATS: Disable PF/VF ATS service independently PCI: Skip Enhanced Allocation (EA) initialization for VF device drivers/pci/ats.c | 276 +++++++++++++++++++++++++++++----------- drivers/pci/iov.c | 1 + drivers/pci/pci.c | 7 + drivers/pci/pci.h | 40 ++++++ include/linux/pci-ats.h | 12 +- include/linux/pci.h | 5 +- 6 files changed, 260 insertions(+), 81 deletions(-) -- 2.21.0