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=-6.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 9EBB0C4338F for ; Fri, 30 Jul 2021 00:07:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 74C7860F5C for ; Fri, 30 Jul 2021 00:07:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235358AbhG3AHT (ORCPT ); Thu, 29 Jul 2021 20:07:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59368 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235124AbhG3AHR (ORCPT ); Thu, 29 Jul 2021 20:07:17 -0400 Received: from mail-vs1-xe2e.google.com (mail-vs1-xe2e.google.com [IPv6:2607:f8b0:4864:20::e2e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BFE52C061765 for ; Thu, 29 Jul 2021 17:07:12 -0700 (PDT) Received: by mail-vs1-xe2e.google.com with SMTP id o12so4509362vst.3 for ; Thu, 29 Jul 2021 17:07:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=k+xYEU7GGmWpZRCP0v/62bsuQOHLx/NQBjwr1YpFdkM=; b=drIAYW+zXFJ+cbbCXFBGz0LWySE6GoP8M/FmnV8wYBubfbEXrQBU7SR9pmjYeGISrf xPoprO6u0MS59ubngZDL0/Go9vBy7rLhQZrt6OmuYLMp7olW7fW2yXKZDJMXu1uIfFFm R6sQ0cnJhb7jXY2xOm6yGgd1FCPYRh04qE60c= 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=k+xYEU7GGmWpZRCP0v/62bsuQOHLx/NQBjwr1YpFdkM=; b=BvjL8JLecdWdoVTAxkM5rhtxwdq3w/5oNqi/Qsn+oM5RnsvFvlBOzb3amcisOY76/B 3WAEDT3/w+6xCS94b+zR4fxoZE3OzIgHgV61NGkZVDrctJQuR14TEl1SbvrP/rq4/VGi UzHTbUKi+fnToKuCuhxLPWdqKa8x7C57nee3TZaTeVcH/mYh3yAMu8UcbQmHAZ/JInvT uCo4naJ6pm2yUJhglQqiEdpVy+AAwlmcBXED4p22YOa+ZGnjsz37fjUw+crEKd+5rUjL BHBAN3ruymUXgxzPivCm+Qq0Id/wf5hz4qmehcaT5XEHWa5/WnPwc9lppKLfaf9+FIb5 AO9A== X-Gm-Message-State: AOAM532ZT2O9iDkWkp5uczG6oAVfmIBDlwsitgAiV0fn4tlNNuKdram8 zMuZpVsldFZzYYh5qJ6A983lwh7GRI36Gg== X-Google-Smtp-Source: ABdhPJz4nmZ9y/z59N3DGHlSDwLZhlFM9ARiBqxd/IVBcYZGvOGsiA+ANJtQFnFWz/uAu95X5TXgXg== X-Received: by 2002:a05:6102:38d2:: with SMTP id k18mr3825679vst.39.1627603631665; Thu, 29 Jul 2021 17:07:11 -0700 (PDT) Received: from mail-ua1-f49.google.com (mail-ua1-f49.google.com. [209.85.222.49]) by smtp.gmail.com with ESMTPSA id g70sm751vkf.24.2021.07.29.17.07.10 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 29 Jul 2021 17:07:11 -0700 (PDT) Received: by mail-ua1-f49.google.com with SMTP id w11so3261141uar.4 for ; Thu, 29 Jul 2021 17:07:10 -0700 (PDT) X-Received: by 2002:a9f:238b:: with SMTP id 11mr7438420uao.91.1627603630500; Thu, 29 Jul 2021 17:07:10 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Doug Anderson Date: Thu, 29 Jul 2021 17:06:59 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v2 00/24] iommu: Refactor DMA domain strictness To: Robin Murphy Cc: Joerg Roedel , Will Deacon , "list@263.net:IOMMU DRIVERS , Joerg Roedel ," , Linux ARM , LKML , suravee.suthikulpanit@amd.com, Lu Baolu , John Garry , Marek Szyprowski , Yoshihiro Shimoda , Geert Uytterhoeven , Yong Wu , Heiko Stuebner , Chunyan Zhang , Maxime Ripard , Jean-Philippe Brucker Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Thu, Jul 29, 2021 at 3:33 PM Doug Anderson wrote: > > I was definitely getting some inconsistencies in my tests where the > eMMC speeds were getting into a bad state, but I don't believe it's > related to your patch series. I think this was just me being an idiot. I forgot that I'd been running with KASAN, so that explains why my speeds were so much slower than usual and probably also explains how it could get in a bad state (I guess it also explains why sugov was eating up 30% of my CPU time since that went away too!). No mystery here aside from why it took me this long to realize it. I'm now getting ~213 MB/s without forcing it to lazy and ~261 MB/s with forcing it to lazy through sysfs (and without any other cpufreq hacks). -Doug