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=-12.4 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,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 0F9A6C48BE5 for ; Thu, 17 Jun 2021 03:13:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C4F4D613BF for ; Thu, 17 Jun 2021 03:13:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230241AbhFQDPx (ORCPT ); Wed, 16 Jun 2021 23:15:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53812 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229569AbhFQDPw (ORCPT ); Wed, 16 Jun 2021 23:15:52 -0400 Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 13143C061574 for ; Wed, 16 Jun 2021 20:13:45 -0700 (PDT) Received: by mail-pj1-x1034.google.com with SMTP id k7so2934940pjf.5 for ; Wed, 16 Jun 2021 20:13:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-transfer-encoding:content-language; bh=LK0e/zXqoa92GHXVSM0nWPMcz/Pqo2k+ojs5vodEUNo=; b=k08oZqD00VNpqV2sYzG8HhNVj8HSDIXjmJI7jiHkB6BaozzME7UksUN90Bkps3NBty xGWesecQOqC/kddOKK0kP0zFZ+EYV3y/xlfig1cqT6Dc6OFWCNq3RtXZ/XyNXaxERuo1 BIkgTw6z+lWkHyq+xL/Im3JYdyONwwGqDA7KO+2R1DLY2BBA3mgj8hg7bgMJy8vUabdW tGYUrcsfdTCVY+vKbRkaNQ/Nk3rsWQ89H8ytu4nFXk8+zNw/YPj2E8mmpW8elQ42VXJC 6k/gXjpe3pvThOrgRwGpi6fSIHkE3l2tVHvEvDf0RggZ6R7d1zjQGsOccE8x7aWHXEtw DtJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=LK0e/zXqoa92GHXVSM0nWPMcz/Pqo2k+ojs5vodEUNo=; b=eh+KuqYdh0uUV3zc6T0xD83sbg3ErrAJKmkkmAcg7KlHeGFVxXvTv13B8WZhus8TK8 4Y7/oN4cGiYZxZ7ct3dP644TGh5aQj+Mr7tx7/IH8QKMuLbvvqYSQTc4jm4RjysErJDz UAF4b/xKvnWdDBUHc4Hm6IfZ52A6INFhwNh2rCdwVtuBqE85Snofze+v6n70E9euL43r qc8hlbd9Q15h/3BDdniYPHzIR8VEoOGf6r/F6lKab/+9fwwICaGzcbepfUMxVbQPqicA IQqRrvFBrj/foyQHfWbBpb4GQv5q2L53ygRCvXgXGZgjXkbW9PsQq7cHvmshBECBe1Hr YD2g== X-Gm-Message-State: AOAM533EpFEg/zfq5fxzq94fldQFbsCvPE2346nlSYj5u8QhKNJNUBzC Cb34Va4gF1o7e2HxYrDowVF5TOYAQramLr9+ X-Google-Smtp-Source: ABdhPJzuLbquYGicD0qoCPTNLZWheR3sXEQ/O/UiJZ2kc+sCO6VqH8LMNsLGRx1QvfeO7GuOp4hR1g== X-Received: by 2002:a17:903:49:b029:118:5d88:32ce with SMTP id l9-20020a1709030049b02901185d8832cemr2572224pla.10.1623899624378; Wed, 16 Jun 2021 20:13:44 -0700 (PDT) Received: from [10.11.0.58] ([45.135.186.132]) by smtp.gmail.com with ESMTPSA id m18sm3431466pff.88.2021.06.16.20.13.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 16 Jun 2021 20:13:43 -0700 (PDT) Subject: Re: [RFC PATCH] iommu: add domain->nested To: Christoph Hellwig Cc: Joerg Roedel , Will Deacon , Auger Eric , jean-philippe , iommu@lists.linux-foundation.org, kvm@vger.kernel.org References: <1623854282-26121-1-git-send-email-zhangfei.gao@linaro.org> <20210616144413.GA2593@lst.de> From: Zhangfei Gao Message-ID: Date: Thu, 17 Jun 2021 11:13:35 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210616144413.GA2593@lst.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 2021/6/16 下午10:44, Christoph Hellwig wrote: > On Wed, Jun 16, 2021 at 10:38:02PM +0800, Zhangfei Gao wrote: >> +++ b/include/linux/iommu.h >> @@ -87,6 +87,7 @@ struct iommu_domain { >> void *handler_token; >> struct iommu_domain_geometry geometry; >> void *iova_cookie; >> + int nested; > This should probably be a bool : 1; > > Also this needs a user, so please just queue up a variant of this for > the code that eventually relies on this information. Thanks Christoph Got it, will do this.