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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 CC663ECE58A for ; Tue, 1 Oct 2019 23:29:25 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AAD0C21920 for ; Tue, 1 Oct 2019 23:29:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AAD0C21920 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id EF2A52B10; Tue, 1 Oct 2019 23:29:21 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 7DA642AD5 for ; Tue, 1 Oct 2019 23:29:19 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 16FC2A3 for ; Tue, 1 Oct 2019 23:29:19 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Oct 2019 16:29:17 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,572,1559545200"; d="scan'208";a="203402501" Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by orsmga002.jf.intel.com with ESMTP; 01 Oct 2019 16:29:17 -0700 From: Jacob Pan To: iommu@lists.linux-foundation.org, LKML , Joerg Roedel , David Woodhouse , Alex Williamson , Jean-Philippe Brucker Subject: [PATCH v3 0/4] User API for nested shared virtual address (SVA) Date: Tue, 1 Oct 2019 16:33:21 -0700 Message-Id: <1569972805-27664-1-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailer: git-send-email 2.7.4 Cc: "Tian, Kevin" , Raj Ashok , Jonathan Cameron X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org This set consists of IOMMU APIs to support SVA in the guest, a.k.a nested SVA. As the complete SVA support is complex, we break down the enabling effort into three stages: 1. PCI device direct assignment 2. Fault handling, especially page request service support 3. Mediated device assignment Each stage includes common API and vendor specific IOMMU driver changes. This series is the common uAPI for stage #1. It is intended to build consensus on the interface which all vendors reply on. This series is extracted from the complete stage1 set which includes VT-d code. https://lkml.org/lkml/2019/8/15/951 Changes: - Use spinlock instead of mutex to protect ioasid custom allocators. This is to support callers in atomic context - Added more padding to guest PASID bind data for future extensions, suggested by Joerg. After much thinking, I did not do name change from PASID to IOASID in the uAPI, considering we have been using PASID in the rest of uAPIs. IOASID will remain used within the kernel. For more discussions lead to this series, checkout LPC 2019 VFIO/IOMMU/PCI microconference materials. https://linuxplumbersconf.org/event/4/sessions/66/#20190909 Change log: v3: - include errno.h in ioasid.h to fix compile error - rebased to v5.4-rc1, no change v2: - Addressed review comments by Jean on IOASID custom allocators, locking fix, misc control flow fix. - Fixed a compile error with missing header errno.h - Updated Jean-Philiippe's new email and updateded reviewed-by tag Jacob Pan (2): iommu/ioasid: Add custom allocators iommu: Introduce guest PASID bind function Jean-Philippe Brucker (1): iommu: Add I/O ASID allocator Yi L Liu (1): iommu: Introduce cache_invalidate API drivers/iommu/Kconfig | 4 + drivers/iommu/Makefile | 1 + drivers/iommu/ioasid.c | 432 +++++++++++++++++++++++++++++++++++++++++++++ drivers/iommu/iommu.c | 30 ++++ include/linux/ioasid.h | 76 ++++++++ include/linux/iommu.h | 36 ++++ include/uapi/linux/iommu.h | 169 ++++++++++++++++++ 7 files changed, 748 insertions(+) create mode 100644 drivers/iommu/ioasid.c create mode 100644 include/linux/ioasid.h -- 2.7.4 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu