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=-7.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 E417FC432BE for ; Fri, 27 Aug 2021 17:53:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C1EAF60F4F for ; Fri, 27 Aug 2021 17:53:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237743AbhH0Ry2 (ORCPT ); Fri, 27 Aug 2021 13:54:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39906 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233925AbhH0RyY (ORCPT ); Fri, 27 Aug 2021 13:54:24 -0400 Received: from mail-qv1-xf29.google.com (mail-qv1-xf29.google.com [IPv6:2607:f8b0:4864:20::f29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 676E0C0613CF for ; Fri, 27 Aug 2021 10:53:35 -0700 (PDT) Received: by mail-qv1-xf29.google.com with SMTP id g11so4462001qvd.2 for ; Fri, 27 Aug 2021 10:53:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=message-id:subject:from:to:cc:date:in-reply-to:references :user-agent:mime-version:content-transfer-encoding; bh=Z/pvACIwYDrhsFAHjFo4egknO444SCb0xOTzLp4O58U=; b=mbHJscYr7Tjgrd2ruQiWjuPvHFjRq2vgB0nivh5McxWX2Waf8TcBwcU042EoYUQ5Xg FjE8pJu6MkdOgHIOwfVnsfii9Ft+LXmkse5dMtxVW+yBm5GquPJTOei+kkTBqhBVs3h0 L56GG8WFpMayYXvj/ThCYp+4D0lwt2TyIeUdeG3FyxZooraQL4um8+DK3K6INtZhss1k uDKonUGGsrr6ba4YShpHYC4XFJws3bRf6+WQCEVEPgBzEfgzR6Tn3VrJRZ8sb8mY/+QY 1CUjOYwqrqV1lcQ+is4XqAYfs+uAhKAvN8Z142H3XOujxaNjBbPmR3RrUAiltcGYFIP/ Ep+w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:subject:from:to:cc:date:in-reply-to :references:user-agent:mime-version:content-transfer-encoding; bh=Z/pvACIwYDrhsFAHjFo4egknO444SCb0xOTzLp4O58U=; b=gc3h/UB9R5KuVURVuszeRyJu14EjLQfbEdtLSoBqWrMXKfA4PMk6IQjSch/RvYEvpf 0vq4UFwoqqgZJBm6L7b7URmjY0unQtd+JK6M3iJyT8xYyJB1D6o1fg9WgSJTt1m7D46g ncuSlQXkZtGaGt6/wjF6zrzqEVUQig/KBd/VdRMta53LHQhMEOQYWjtK3P3IRHedwRho TyFkf7W04KyeBueIZcRi7Cq17dYARiQ9gx37tJLmYYmXNUbVCf40y6alpI/yJwnZB5ie 3rO7rL/J1edeXqZqoUaDA87WXp0OE0VTmjn5WiDkl3i5K4edlaWjaktExAwQxsiKOpts +vLw== X-Gm-Message-State: AOAM532BD24u7Jxwtaal2oGXF7+bMmA6DbS3/4CApQ/K+kPq53ruG6re xz9cXyV8XWkzb/zZtlqRywI= X-Google-Smtp-Source: ABdhPJwvu4tpIJSvU+55fpUd2TRX4HwRspEJrI/S9qzAMG9oM4gxSimheFWtMXbC+qd9Cv3iY+GUHw== X-Received: by 2002:a05:6214:14f2:: with SMTP id k18mr11106035qvw.19.1630086814590; Fri, 27 Aug 2021 10:53:34 -0700 (PDT) Received: from ?IPv6:2804:431:c7f1:e948:8e69:9cd6:5512:12f4? ([2804:431:c7f1:e948:8e69:9cd6:5512:12f4]) by smtp.gmail.com with ESMTPSA id x21sm5033736qkf.76.2021.08.27.10.53.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Aug 2021 10:53:34 -0700 (PDT) Message-ID: Subject: Re: [PATCH v6 10/11] powerpc/pseries/iommu: Make use of DDW for indirect mapping From: Leonardo =?ISO-8859-1?Q?Br=E1s?= To: Frederic Barrat , Alexey Kardashevskiy , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , David Gibson , Nicolin Chen , kernel test robot Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Date: Fri, 27 Aug 2021 14:53:47 -0300 In-Reply-To: <3d79480a-20df-ea1a-e17f-8bf2c8a8a2be@linux.ibm.com> References: <20210817063929.38701-1-leobras.c@gmail.com> <20210817063929.38701-11-leobras.c@gmail.com> <3d79480a-20df-ea1a-e17f-8bf2c8a8a2be@linux.ibm.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.40.4 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello Fred, On Fri, 2021-08-27 at 19:06 +0200, Frederic Barrat wrote: > > I think it looks ok now as it was mostly me who was misunderstanding > one > part of the previous iteration. > Reviewed-by: Frederic Barrat > Thank you for reviewing this series! > Sorry for the late review, I was enjoying some time off. And thanks > for > that series, I believe it should help with those bugs complaining > about > lack of DMA space. It was also very educational for me, thanks to you > and Alexey for your detailed answers. Working on this series caused me to learn a lot about how DMA and IOMMU works in Power, and it was a great experience. Thanks to Alexey who helped and guided me through this! Best regards, Leonardo Bras