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=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 67F71C432BE for ; Thu, 29 Jul 2021 15:53:20 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id A1F2960F46 for ; Thu, 29 Jul 2021 15:53:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org A1F2960F46 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=sntech.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 6234F40576; Thu, 29 Jul 2021 15:53:19 +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 SprBdk729CcN; Thu, 29 Jul 2021 15:53:18 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp4.osuosl.org (Postfix) with ESMTPS id 0F6B240574; Thu, 29 Jul 2021 15:53:17 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id E5D7BC0010; Thu, 29 Jul 2021 15:53:17 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [IPv6:2605:bc80:3010::136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 6037AC000E for ; Thu, 29 Jul 2021 15:53:16 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id 4235C6063A for ; Thu, 29 Jul 2021 15:53:16 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id neoMlnn4vtPN for ; Thu, 29 Jul 2021 15:53:15 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from gloria.sntech.de (gloria.sntech.de [185.11.138.130]) by smtp3.osuosl.org (Postfix) with ESMTPS id 262B360607 for ; Thu, 29 Jul 2021 15:53:15 +0000 (UTC) Received: from ip5f5aa64a.dynamic.kabel-deutschland.de ([95.90.166.74] helo=diego.localnet) by gloria.sntech.de with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m98LI-00044N-5S; Thu, 29 Jul 2021 17:53:04 +0200 From: Heiko =?ISO-8859-1?Q?St=FCbner?= To: joro@8bytes.org, will@kernel.org, Robin Murphy Subject: Re: [PATCH v2 00/24] iommu: Refactor DMA domain strictness Date: Thu, 29 Jul 2021 17:53:02 +0200 Message-ID: <2152676.3VsfAaAtOV@diego> In-Reply-To: References: <2947762.k3LOHGUjKi@diego> MIME-Version: 1.0 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 issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Am Donnerstag, 29. Juli 2021, 17:43:07 CEST schrieb Robin Murphy: > On 2021-07-29 16:04, Heiko St=FCbner 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-d= rm > > 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* [P= LANE: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* [P= LANE: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 That vague idea was actually quite correct, applying iommu/dma: Unexport IOVA cookie management on top of the the two patches makes my rk3288 boot correctly again and the display also works again. Heiko > = > 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(-) > >> > >> > > = > > = > > = > > = > = _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu