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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B2A92C001DE for ; Mon, 31 Jul 2023 10:49:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230421AbjGaKtC (ORCPT ); Mon, 31 Jul 2023 06:49:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39310 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230320AbjGaKso (ORCPT ); Mon, 31 Jul 2023 06:48:44 -0400 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 148AB10CC for ; Mon, 31 Jul 2023 03:48:42 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id 3f1490d57ef6-d061f324d64so4570354276.1 for ; Mon, 31 Jul 2023 03:48:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1690800522; x=1691405322; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=MYD4KNk4I+aUCQIcFZ3n5/B+CXfxdz6VfnyKCw5fMRU=; b=0Jg1PJ+2Ms0SpImThAW1EMWAb2V0CT6cMZnANaGZF2LzzafL1BQJ6iWEjbVQHZyy4L J3xsZJOY4jXTy3SLnVtdiwKFv+0OfCVLR6D+t+5Tt+WGqib+Hcvl+m9yW0mgIk/5zI01 ssSeQZGchb+HTawL1Y6Mm2dAcgXazGHrPWQs8v7nB82VonT9y8Mdh7s4A6z8boRiYvuv +IZDxY+VITXRjOeNgZxP+kAqStou6n8VgrksNelRVXISPTQyiCc6No6OHUlriiIO5Jjb VIyGQy00sBFZxEc1L30uG45g2U7cyMSwfNWMPvzZhQCJn3Hc5yVv2IdbAF6Lr1Np3I6b HnAw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690800522; x=1691405322; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=MYD4KNk4I+aUCQIcFZ3n5/B+CXfxdz6VfnyKCw5fMRU=; b=ZL0THZEdka5QbmERq60RzujcYJlpK8056HELEM0tCgRvsVwyrxGXBfeYC/gwsQlH8S ZsaKLZJmSLDO8WnPDQGe4wtmIrlrP/U5+KuvdGR7sG3R1xaE38mwQ424Gk/p9D+wV/A5 ueJ9sqHBwcfzF6mY2sR6LR/d6tMPrF+NqZW6bebJKclq4ax988Qdnv+m7O/3gCm2kHlC ptso7rf58npylG7oW/MJcFH3ZOGm+k081PKxzi5wi/Q3KyOPj0sklGw0Rc1vzQSAMEfj KRx7moDSKbHXrJ+YKtJDerCLiPzRG6m3EGN0MztdmYUe5JpedorTCUlWbNXpG//YDUO4 7jnw== X-Gm-Message-State: ABy/qLZHnYy4IEJ5HRQrRiGNYxkOLOOcMBers4/vGtF2HBBC9Cv/ClvS hb4OdknMfWUnnJgH+6Qj9ZmHXbkX4bkb X-Google-Smtp-Source: APBJJlET//ltWfSVaehdcwXyhhFbnIFncdpcb/9IJF01FhUX4aphRs5zX2WZ71v/0k8Wy9HtIpTSfZkGPHRc X-Received: from mshavit.ntc.corp.google.com ([2401:fa00:95:20c:affc:ad1d:5cbb:3c6a]) (user=mshavit job=sendgmr) by 2002:a25:7493:0:b0:d09:17f2:d3b0 with SMTP id p141-20020a257493000000b00d0917f2d3b0mr53114ybc.9.1690800521971; Mon, 31 Jul 2023 03:48:41 -0700 (PDT) Date: Mon, 31 Jul 2023 18:48:10 +0800 Mime-Version: 1.0 X-Mailer: git-send-email 2.41.0.585.gd2178a4bd4-goog Message-ID: <20230731104833.800114-1-mshavit@google.com> Subject: [PATCH v2 0/8] Refactor the SMMU's CD table ownership From: Michael Shavit To: iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: will@kernel.org, robin.murphy@arm.com, nicolinc@nvidia.com, jgg@nvidia.com, jean-philippe@linaro.org, Michael Shavit Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, This series refactors stage 1 domains so that they describe a single CD entry. These entries are now inserted into a CD table that is owned by the arm_smmu_master instead of the domain. This is conceptually cleaner and unblocks other features, such as attaching domains with PASID (for unmanaged/dma domains). This patch series was originally part of a larger patch series that implemented the set_dev_pasid callback for non-SVA domains but is now split into a distinct series. This patch series is also available on gerrit with Jean's SMMU test engine patches cherry-picked on top for testing: https://linux-review.googlesource.com/c/linux/kernel/git/torvalds/linux/+/24742/1 Thanks, Michael Shavit Changes in v2: - Allocate CD table when it's first needed instead of on probe. - Minor changes - Added commit to rename remaining usages of cdcfg to cd_table Changes in v1: - Replace s1_cfg with arm_smmu_ctx_desc_cfg representing the CD table - Assume that the CD table is owned by the SMMU master for most operations. This is forward-compatible with the nested patch series as these operations wouldn't be called when the installed CD table comes from nested domains. - Split off as a distinct patch series from https://lore.kernel.org/all/20230621063825.268890-1-mshavit@google.com/ Michael Shavit (8): iommu/arm-smmu-v3: Move ctx_desc out of s1_cfg iommu/arm-smmu-v3: Replace s1_cfg with cdtab_cfg iommu/arm-smmu-v3: Encapsulate ctx_desc_cfg init in alloc_cd_tables iommu/arm-smmu-v3: move stall_enabled to the cd table iommu/arm-smmu-v3: Skip cd sync if CD table isn't active iommu/arm-smmu-v3: Refactor write_ctx_desc iommu/arm-smmu-v3: Move CD table to arm_smmu_master iommu/arm-smmu-v3: Rename cdcfg to cd_table .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 35 ++- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 219 ++++++++---------- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 21 +- 3 files changed, 142 insertions(+), 133 deletions(-) base-commit: 57012c57536f8814dec92e74197ee96c3498d24e -- 2.41.0.585.gd2178a4bd4-goog