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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 6700DC433E9 for ; Sat, 6 Mar 2021 00:04:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3BF8F650AD for ; Sat, 6 Mar 2021 00:04:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229672AbhCFAEV (ORCPT ); Fri, 5 Mar 2021 19:04:21 -0500 Received: from mail-ot1-f50.google.com ([209.85.210.50]:46698 "EHLO mail-ot1-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229493AbhCFAD7 (ORCPT ); Fri, 5 Mar 2021 19:03:59 -0500 Received: by mail-ot1-f50.google.com with SMTP id 97so3473289otf.13; Fri, 05 Mar 2021 16:03:58 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=FCbBlEEqgxfjPjtQfKvWFaWJOfXoBc2uhQxuYQUH8F0=; b=GO0LtwNWRYb9u4XW25NfkPD3r/RhI52VXi+uLjQZXiRGoxB+UYP/kOBmc04kE4FFYp xQ8TS5N6gQdOD4dDJznuOcZs0SkR1SAqdon/N0PoVEtxASSFJ2iLpH7jvhmmaYFaVAbt nAnLsXtCODcHqzQoDNGsUZUPgFRILYQi29jlfVS5dbIFUOPXGruVY4X5rLIL1tUdaUqs RNk+GeJIAC3wus7jKOFUHHykqyHGAN8tohhg89Ykpg6SBn8AUdHHKl6O2kLXhcm44id3 dD5r3s4fYbhvyADD7OenDthaRClQI63h3MSxhSChP33x6zliEG6nyZ6dV4zBbf0DqTad 7ZPA== X-Gm-Message-State: AOAM532Flxfhqx+QmMTvX64ZHEOPYkiGp3QpkKLpzzPqWCKNLQZzu/Vk xqAIXJJUJQWjNtJ4WUzk36oUbcidzU4uWw== X-Google-Smtp-Source: ABdhPJyXvrdIbaJFHWm44DBCGnI1b4zn6+CHh1kzE5vAHgRbojumfT5/HghxSzgA/e0GigtlZ/hwCg== X-Received: by 2002:a9d:7ac1:: with SMTP id m1mr6652621otn.186.1614989038139; Fri, 05 Mar 2021 16:03:58 -0800 (PST) Received: from mail-oi1-f172.google.com (mail-oi1-f172.google.com. [209.85.167.172]) by smtp.gmail.com with ESMTPSA id v3sm847536oix.48.2021.03.05.16.03.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 05 Mar 2021 16:03:57 -0800 (PST) Received: by mail-oi1-f172.google.com with SMTP id y131so1550429oia.8; Fri, 05 Mar 2021 16:03:56 -0800 (PST) X-Received: by 2002:a54:4794:: with SMTP id o20mr9228337oic.51.1614989036851; Fri, 05 Mar 2021 16:03:56 -0800 (PST) MIME-Version: 1.0 References: <20210301084257.945454-1-hch@lst.de> In-Reply-To: <20210301084257.945454-1-hch@lst.de> From: Li Yang Date: Fri, 5 Mar 2021 18:03:45 -0600 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: cleanup unused or almost unused IOMMU APIs and the FSL PAMU driver To: Christoph Hellwig Cc: Joerg Roedel , Will Deacon , freedreno@lists.freedesktop.org, kvm@vger.kernel.org, linuxppc-dev , dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org, Linux IOMMU , Netdev , linux-arm-msm , David Woodhouse , "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" , Lu Baolu Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Mon, Mar 1, 2021 at 2:44 AM Christoph Hellwig wrote: > > Hi all, > > there are a bunch of IOMMU APIs that are entirely unused, or only used as > a private communication channel between the FSL PAMU driver and it's only > consumer, the qbman portal driver. > > So this series drops a huge chunk of entirely unused FSL PAMU > functionality, then drops all kinds of unused IOMMU APIs, and then > replaces what is left of the iommu_attrs with properly typed, smaller > and easier to use specific APIs. It looks like the unused APIs were added for functionality that were never completed later on. So Acked-by: Li Yang > > Diffstat: > arch/powerpc/include/asm/fsl_pamu_stash.h | 12 > drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 > drivers/iommu/amd/iommu.c | 23 > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 85 --- > drivers/iommu/arm/arm-smmu/arm-smmu.c | 122 +--- > drivers/iommu/dma-iommu.c | 8 > drivers/iommu/fsl_pamu.c | 264 ---------- > drivers/iommu/fsl_pamu.h | 10 > drivers/iommu/fsl_pamu_domain.c | 694 ++-------------------------- > drivers/iommu/fsl_pamu_domain.h | 46 - > drivers/iommu/intel/iommu.c | 55 -- > drivers/iommu/iommu.c | 75 --- > drivers/soc/fsl/qbman/qman_portal.c | 56 -- > drivers/vfio/vfio_iommu_type1.c | 31 - > drivers/vhost/vdpa.c | 10 > include/linux/iommu.h | 81 --- > 16 files changed, 214 insertions(+), 1360 deletions(-)