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 Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 64A68C433EF for ; Sun, 10 Apr 2022 10:27:16 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id CF18A41760; Sun, 10 Apr 2022 10:27:15 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id T_JyNaDbMMda; Sun, 10 Apr 2022 10:27:14 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp4.osuosl.org (Postfix) with ESMTPS id 3BB774175D; Sun, 10 Apr 2022 10:27:14 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 1A1E8C0084; Sun, 10 Apr 2022 10:27:14 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 820A7C002C for ; Sun, 10 Apr 2022 10:27:12 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 6E8DE41760 for ; Sun, 10 Apr 2022 10:27:12 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id HXHyW9O0M88T for ; Sun, 10 Apr 2022 10:27:10 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by smtp4.osuosl.org (Postfix) with ESMTPS id C5BBD4175D for ; Sun, 10 Apr 2022 10:27:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1649586430; x=1681122430; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=/cU/WapWQvkhhrNMrCPzh/gxIogDMTXN0gGrwGCnQo0=; b=hInUNBMoPci0rINx5ZYVxlt/rz25KUq/3bI/8QDmf3dPvVuuwmNgGXuz lhs6HzxHBdJb/4eHhMQLMp1/u7bycVVRqr2EKyIQKc0tujTNTCgBG7NEk XNy7CXjy0at1K0EU0AXclPtTBSqXm5kux+VdWd1plcJZUTnHf43GwBvSg 8FBSzzVwxX1RTOwx8t7O0Ppw53fV6Z4ip6Qf2TTwOdB2QssjCJ+eFOau+ CnZzMpmvYZaGdkKIthmZlboQnNJamN5wobINAd717844M++A6e2OU6tC6 z7cyqA5OVFHiyoi+dNNmP2Gq+Pf614SPxUOyfj+4t5mmtAdl0eyd8RNYt w==; X-IronPort-AV: E=McAfee;i="6400,9594,10312"; a="249238443" X-IronPort-AV: E=Sophos;i="5.90,249,1643702400"; d="scan'208";a="249238443" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Apr 2022 03:27:09 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,249,1643702400"; d="scan'208";a="699019573" Received: from allen-box.sh.intel.com ([10.239.159.48]) by fmsmga001.fm.intel.com with ESMTP; 10 Apr 2022 03:27:05 -0700 From: Lu Baolu To: Joerg Roedel , Jason Gunthorpe , Christoph Hellwig , Kevin Tian , Ashok Raj , Will Deacon , Robin Murphy , Jean-Philippe Brucker Subject: [PATCH RFC v3 00/12] iommu: SVA and IOPF refactoring Date: Sun, 10 Apr 2022 18:24:31 +0800 Message-Id: <20220410102443.294128-1-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Cc: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Jacob jun Pan X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Hi folks, The former part of this series refactors the IOMMU SVA code by assigning an SVA type of iommu_domain to a shared virtual address and replacing sva_bind/unbind iommu ops with attach/detach_dev_pasid domain ops. The latter part changes the existing I/O page fault handling framework from only serving SVA to a generic one. Any driver or component could handle the I/O page faults for its domain in its own way by installing an I/O page fault handler. This series overlaps with another series posted here [1]. For the convenience of review, I included all relevant patches in this series. We will solve the overlap problem later. This series is also available on github here [2]. [1] https://lore.kernel.org/lkml/20220315050713.2000518-1-jacob.jun.pan@linux.intel.com/ [2] https://github.com/LuBaolu/intel-iommu/commits/iommu-sva-refactoring-v3 Please help review and suggest. Best regards, baolu Change log: v1: - https://lore.kernel.org/linux-iommu/20220320064030.2936936-1-baolu.lu@linux.intel.com/ - Initial post. v2: - https://lore.kernel.org/linux-iommu/20220329053800.3049561-1-baolu.lu@linux.intel.com/ - Add sva domain life cycle management to avoid race between unbind and page fault handling. - Use a single domain for each mm. - Return a single sva handler for the same binding. - Add a new helper to meet singleton group requirement. - Rework the SVA domain allocation for arm smmu v3 driver and move the pasid_bit initialization to device probe. - Drop the patch "iommu: Handle IO page faults directly". - Add mmget_not_zero(mm) in SVA page fault handler. v3: - Rework iommu_group_singleton_lockdown() by adding a flag to the group that positively indicates the group can never have more than one member, even after hot plug. - Abstract the data structs used for iommu sva in a separated patches to make it easier for review. - I still keep the RFC prefix in this series as above two significant changes need at least another round review to be finalized. - Several misc refinements. Lu Baolu (12): iommu: Add pasid_bits field in struct dev_iommu iommu: Add a flag to indicate immutable singleton group iommu: Add attach/detach_dev_pasid domain ops iommu/sva: Basic data structures for SVA iommu/vt-d: Remove SVM_FLAG_SUPERVISOR_MODE support iommu/vt-d: Add SVA domain support arm-smmu-v3/sva: Add SVA domain support iommu/sva: Use attach/detach_pasid_dev in SVA interfaces iommu: Remove SVA related callbacks from iommu ops iommu: Prepare IOMMU domain for IOPF iommu: Per-domain I/O page fault handling iommu: Rename iommu-sva-lib.{c,h} include/linux/intel-iommu.h | 5 +- include/linux/iommu.h | 107 ++++-- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 25 +- .../iommu/{iommu-sva-lib.h => iommu-sva.h} | 8 +- .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 85 ++--- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 28 +- drivers/iommu/intel/iommu.c | 20 +- drivers/iommu/intel/svm.c | 135 +++---- drivers/iommu/io-pgfault.c | 71 +--- drivers/iommu/iommu-sva-lib.c | 71 ---- drivers/iommu/iommu-sva.c | 331 ++++++++++++++++++ drivers/iommu/iommu.c | 239 +++++++------ drivers/iommu/Makefile | 2 +- 13 files changed, 706 insertions(+), 421 deletions(-) rename drivers/iommu/{iommu-sva-lib.h => iommu-sva.h} (88%) delete mode 100644 drivers/iommu/iommu-sva-lib.c create mode 100644 drivers/iommu/iommu-sva.c -- 2.25.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu