From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f201.google.com (mail-yw1-f201.google.com [209.85.128.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 997604DC89 for ; Tue, 1 Aug 2023 18:38:53 +0000 (UTC) Received: by mail-yw1-f201.google.com with SMTP id 00721157ae682-584341f9cb3so1971717b3.0 for ; Tue, 01 Aug 2023 11:38:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1690915132; x=1691519932; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=ZKmg+CBz4TGm3r8jvwoY5Ho1uNwN27lHQV4gjuCiVEY=; b=WN9JtxmSArmKBsGxfpIM9wVLy9+C6iQuScP8JgRAPyYIsjB1QhSS6REc4sx85JNdat wTqfJP8iKE7mtxK3C1609C1ha546DHUEqnB6DeVj5dqsenNNsYUxStXjncy6z283IYMV 0kfuAiBZUiHireumid0OFqFQd7Rxr101ZuM1SgKNRGN7gaPKQZHtbCWZBgDfE/OL3MoS i7eAMbs6tLq6lTnlccfVNlptKum7sZixicEVJEBeg39vZbD0MlFVEhTNH0tYiBTtASu1 AcMJwWH5Bkye55mOl9tFLnGJtx7EaJCssZj/tFp7CPU+tdMYIZ5vtuNk/VvOtBKwbk4w 6m6A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690915132; x=1691519932; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=ZKmg+CBz4TGm3r8jvwoY5Ho1uNwN27lHQV4gjuCiVEY=; b=UxjA/kqbiMxuu/ZP25uE1pPFjfIk9WZoQvn81ToZj75Wfb79uBBqhFj6o7swvabQMM D/9yy4Jad5mWXzcru5824KOWzr02aorvMmKJom1a359eWNBws8gkv2UUzuP9xd0Z7VHd JwoO5JjsaE8MfBiKghH9HQA5unOhWAk+G3zYwZNJKpgG6IuDglXsESFpmK+112Qnh33d GGLhBOZeSmkNhiUo9UHi306GN1JCThb06ZXHSTq0Ckof4RQCfw/vmMme6uNJ9PGsNne3 RUgnpJ5vF+3GtsKbfW4a4kSGgD36CgDNTT97AE2QpnK6xYVGB8XLs6daT2IEFvMRu+lC bveA== X-Gm-Message-State: ABy/qLYWGcPGdZMUZIykihSu5pEUEdgBGGs55NRKzpNN42uV8Wh0+tMK wAiDmS/x3bmqEFGsRuB/rWC9aP2A2jYpsN9Tu2TOZ2n1qnUJzcleO2JrLUr8C3fGfj8Tr/xlPTx 5QQTKY6IZDtUCySSqUWioGcp773JfHJ1DVQ+frcFvBzGnHcvXxhDjIpmOupD5YFc= X-Google-Smtp-Source: APBJJlFDRod3DJ+lSa5o4srOuFHgar/AXipUr4WoI/zCNUj0ZKIooFMM936vlc3PkZZ94um3k1jNJWxotc0W X-Received: from mshavit.ntc.corp.google.com ([2401:fa00:95:20c:a54:d53d:50e4:b5b8]) (user=mshavit job=sendgmr) by 2002:a05:690c:3504:b0:57a:6bb:c027 with SMTP id fq4-20020a05690c350400b0057a06bbc027mr186493ywb.1.1690915132183; Tue, 01 Aug 2023 11:38:52 -0700 (PDT) Date: Wed, 2 Aug 2023 02:35:17 +0800 Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.41.0.585.gd2178a4bd4-goog Message-ID: <20230801183845.4026101-1-mshavit@google.com> Subject: [PATCH v3 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: robin.murphy@arm.com, will@kernel.org, jean-philippe@linaro.org, jgg@nvidia.com, nicolinc@nvidia.com, Michael Shavit Content-Type: text/plain; charset="UTF-8" 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/+/24742/3 Thanks, Michael Shavit Changes in v3: - Add a helper to write a CD to all masters that a domain is attached to. - Fixed an issue where an arm_smmu_write_ctx_desc error return wasn't correctly handled by its caller. - Flip the cd_table.installed bit back off when table is detached - re-order the commit later in the series since flipping the installed bit to off isn't obvious when the cd_table is still shared by multiple masters. - Link to v2: https://lore.kernel.org/all/20230731104833.800114-1-mshavit@google.com/ 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 - Link to v1: https://lore.kernel.org/all/20230727182647.4106140-1-mshavit@google.com/ 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: Refactor write_ctx_desc iommu/arm-smmu-v3: Move CD table to arm_smmu_master iommu/arm-smmu-v3: Skip cd sync if CD table isn't active iommu/arm-smmu-v3: Rename cdcfg to cd_table .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 33 ++- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 217 ++++++++---------- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 21 +- 3 files changed, 139 insertions(+), 132 deletions(-) base-commit: 57012c57536f8814dec92e74197ee96c3498d24e -- 2.41.0.585.gd2178a4bd4-goog