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=-10.4 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 9BB7DC4338F for ; Thu, 29 Jul 2021 15:43:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 80C3C60F01 for ; Thu, 29 Jul 2021 15:43:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237971AbhG2PnW (ORCPT ); Thu, 29 Jul 2021 11:43:22 -0400 Received: from foss.arm.com ([217.140.110.172]:50878 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237891AbhG2PnT (ORCPT ); Thu, 29 Jul 2021 11:43:19 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 27E076D; Thu, 29 Jul 2021 08:43:16 -0700 (PDT) Received: from [10.57.36.146] (unknown [10.57.36.146]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id A26983F73D; Thu, 29 Jul 2021 08:43:13 -0700 (PDT) Subject: Re: [PATCH v2 00/24] iommu: Refactor DMA domain strictness To: =?UTF-8?Q?Heiko_St=c3=bcbner?= , joro@8bytes.org, will@kernel.org Cc: iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, suravee.suthikulpanit@amd.com, baolu.lu@linux.intel.com, john.garry@huawei.com, dianders@chromium.org, Marek Szyprowski , Yoshihiro Shimoda , Geert Uytterhoeven , Yong Wu , Chunyan Zhang , Maxime Ripard , Jean-Philippe Brucker References: <2947762.k3LOHGUjKi@diego> From: Robin Murphy Message-ID: Date: Thu, 29 Jul 2021 16:43:07 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <2947762.k3LOHGUjKi@diego> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2021-07-29 16:04, Heiko Stübner wrote: > Hi Robin, > > Am Mittwoch, 28. Juli 2021, 17:58:21 CEST schrieb Robin Murphy: >> Hi all, >> >> Here's v2 where things start to look more realistic, hence the expanded >> CC list. The patches are now based on the current iommu/core branch to >> take John's iommu_set_dma_strict() cleanup into account. >> >> The series remiains in two (or possibly 3) logical parts - for people >> CC'd on cookie cleanup patches, the later parts should not affect you >> since your drivers don't implement non-strict mode anyway; the cleanup >> is all pretty straightforward, but please do yell at me if I've managed >> to let a silly mistake slip through and broken your driver. >> >> This time I have also build-tested x86 as well as arm64 :) > > TL;DR: arm64 yay, arm32 nay ;-) Cheers Heiko! > testcase: > 5.14-rc3 > + iommu/next > + patches 1+8 (the ones you cc'd me on) > iommu: Pull IOVA cookie management into the core > iommu/rockchip: Drop IOVA cookie management > > rk3399+hdmi (puma): boots with graphics > rk3399+edp (kevin): boots with graphics > px30+dsi (minievb): boots with graphics > > rk3288 (arm32, veyron-pinky): hangs when trying to start the rockchip-drm > at some points the rest of the system recovers and fills the log with > > [ 47.193776] [drm:drm_crtc_commit_wait] *ERROR* flip_done timed out > [ 47.193867] [drm:drm_atomic_helper_wait_for_dependencies] *ERROR* [PLANE:31:plane-0] commit wait timed out > [ 57.433743] [drm:drm_crtc_commit_wait] *ERROR* flip_done timed out > [ 57.433828] [drm:drm_atomic_helper_wait_for_dependencies] *ERROR* [PLANE:40:plane-4] commit wait timed out > > spews > > testcase 2: > 5.14-rc3 > + iommu/next > > all works fine on both arm32+arm64 > > > That whole iommu voodoo is a bit over my head right now, so I'm not sure > what to poke to diagnose this. Dang, this wasn't supposed to affect 32-bit Arm at all, since that doesn't touch any of the default domain stuff either way. I have both my RK3288 box (which IIRC doesn't currently boot) and an Odroid-U3 in the "desk pile" right in front of me, so at worst I'll try bringing one of those to life to see what silly thing I have indeed done to break 32-bit. I have a vague idea forming already, which suggests that it might get better again once patch #12 is applied, but even if so there's no excuse not to be bisectable, so I need to dig in and fix it - many thanks for yelling as requested :D Robin. > > > Heiko > > >> Changes in v2: >> >> - Add iommu_is_dma_domain() helper to abstract flag check (and help >> avoid silly typos like the one in v1). >> - Tweak a few commit messages for spelling and (hopefully) clarity. >> - Move the iommu_create_device_direct_mappings() update to patch #14 >> where it should have been. >> - Rewrite patch #20 as a conversion of the now-existing option. >> - Clean up the ops->flush_iotlb_all check which is also made redundant >> by the new domain type >> - Add patch #24, which is arguably tangential, but it was something I >> spotted during the rebase, so... >> >> Once again, the whole lot is available on a branch here: >> >> https://gitlab.arm.com/linux-arm/linux-rm/-/tree/iommu/fq >> >> Thanks, >> Robin. >> >> >> CC: Marek Szyprowski >> CC: Yoshihiro Shimoda >> CC: Geert Uytterhoeven >> CC: Yong Wu >> CC: Heiko Stuebner >> CC: Chunyan Zhang >> CC: Chunyan Zhang >> CC: Maxime Ripard >> CC: Jean-Philippe Brucker >> >> Robin Murphy (24): >> iommu: Pull IOVA cookie management into the core >> iommu/amd: Drop IOVA cookie management >> iommu/arm-smmu: Drop IOVA cookie management >> iommu/vt-d: Drop IOVA cookie management >> iommu/exynos: Drop IOVA cookie management >> iommu/ipmmu-vmsa: Drop IOVA cookie management >> iommu/mtk: Drop IOVA cookie management >> iommu/rockchip: Drop IOVA cookie management >> iommu/sprd: Drop IOVA cookie management >> iommu/sun50i: Drop IOVA cookie management >> iommu/virtio: Drop IOVA cookie management >> iommu/dma: Unexport IOVA cookie management >> iommu/dma: Remove redundant "!dev" checks >> iommu: Introduce explicit type for non-strict DMA domains >> iommu/amd: Prepare for multiple DMA domain types >> iommu/arm-smmu: Prepare for multiple DMA domain types >> iommu/vt-d: Prepare for multiple DMA domain types >> iommu: Express DMA strictness via the domain type >> iommu: Expose DMA domain strictness via sysfs >> iommu: Merge strictness and domain type configs >> iommu/dma: Factor out flush queue init >> iommu: Allow enabling non-strict mode dynamically >> iommu/arm-smmu: Allow non-strict in pgtable_quirks interface >> iommu: Only log strictness for DMA domains >> >> .../ABI/testing/sysfs-kernel-iommu_groups | 2 + >> drivers/iommu/Kconfig | 80 +++++++++---------- >> drivers/iommu/amd/iommu.c | 21 +---- >> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 25 ++++-- >> drivers/iommu/arm/arm-smmu/arm-smmu.c | 29 ++++--- >> drivers/iommu/arm/arm-smmu/qcom_iommu.c | 8 -- >> drivers/iommu/dma-iommu.c | 44 +++++----- >> drivers/iommu/exynos-iommu.c | 18 +---- >> drivers/iommu/intel/iommu.c | 23 ++---- >> drivers/iommu/iommu.c | 53 +++++++----- >> drivers/iommu/ipmmu-vmsa.c | 27 +------ >> drivers/iommu/mtk_iommu.c | 6 -- >> drivers/iommu/rockchip-iommu.c | 11 +-- >> drivers/iommu/sprd-iommu.c | 6 -- >> drivers/iommu/sun50i-iommu.c | 12 +-- >> drivers/iommu/virtio-iommu.c | 8 -- >> include/linux/dma-iommu.h | 9 ++- >> include/linux/iommu.h | 15 +++- >> 18 files changed, 171 insertions(+), 226 deletions(-) >> >> > > > > 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=-10.4 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 1138BC4320A for ; Thu, 29 Jul 2021 15:43:23 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher 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lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 70905C0010; Thu, 29 Jul 2021 15:43:19 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 669C7C000E for ; Thu, 29 Jul 2021 15:43:18 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 4F56D4058E for ; Thu, 29 Jul 2021 15:43:18 +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 qKvaaw3OCwwX for ; Thu, 29 Jul 2021 15:43:17 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp4.osuosl.org (Postfix) with ESMTP id 03B2B4058B for ; Thu, 29 Jul 2021 15:43:16 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 27E076D; Thu, 29 Jul 2021 08:43:16 -0700 (PDT) Received: from [10.57.36.146] (unknown [10.57.36.146]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id A26983F73D; Thu, 29 Jul 2021 08:43:13 -0700 (PDT) Subject: Re: [PATCH v2 00/24] iommu: Refactor DMA domain strictness To: =?UTF-8?Q?Heiko_St=c3=bcbner?= , joro@8bytes.org, will@kernel.org References: <2947762.k3LOHGUjKi@diego> From: Robin Murphy Message-ID: Date: Thu, 29 Jul 2021 16:43:07 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <2947762.k3LOHGUjKi@diego> Content-Language: en-GB Cc: Maxime Ripard , Jean-Philippe Brucker , Geert Uytterhoeven , linux-kernel@vger.kernel.org, Chunyan Zhang , dianders@chromium.org, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development 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Zhang , Maxime Ripard , Jean-Philippe Brucker References: <2947762.k3LOHGUjKi@diego> From: Robin Murphy Message-ID: Date: Thu, 29 Jul 2021 16:43:07 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <2947762.k3LOHGUjKi@diego> Content-Language: en-GB X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210729_084324_963961_23FD8113 X-CRM114-Status: GOOD ( 28.89 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gMjAyMS0wNy0yOSAxNjowNCwgSGVpa28gU3TDvGJuZXIgd3JvdGU6Cj4gSGkgUm9iaW4sCj4g 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