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=-3.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 92D9FC352B6 for ; Thu, 9 Apr 2020 09:54:18 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (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 918262083E for ; Thu, 9 Apr 2020 09:45:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="pPOs1I9W" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 918262083E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 5AD19242F3; Thu, 9 Apr 2020 09:45:03 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 97DTUnZ+OVbb; Thu, 9 Apr 2020 09:45:02 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by silver.osuosl.org (Postfix) with ESMTP id 1B71820015; Thu, 9 Apr 2020 09:45:02 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id F0790C1D7E; Thu, 9 Apr 2020 09:45:01 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 5F87EC0177 for ; Thu, 9 Apr 2020 09:45:01 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 4A12B854D0 for ; Thu, 9 Apr 2020 09:45:01 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id MOroKUzXN0lw for ; Thu, 9 Apr 2020 09:45:00 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mail-wm1-f67.google.com (mail-wm1-f67.google.com [209.85.128.67]) by fraxinus.osuosl.org (Postfix) with ESMTPS id CBAC5853D3 for ; Thu, 9 Apr 2020 09:44:59 +0000 (UTC) Received: by mail-wm1-f67.google.com with SMTP id h2so3228436wmb.4 for ; Thu, 09 Apr 2020 02:44:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:content-transfer-encoding:in-reply-to; bh=PesRHogudULc4/x9yhdrVQgI67Y/2LGQZWmhimPv3t4=; b=pPOs1I9W3kE0K0EX32bKoAS7AYeVXe/ym1tzYg00fJ1JDUmSPicjSIVRZkZ7tr403a Hn17sphcjZjxUHxDMHrcZYBwZcHOkCQpBHJWEHLF72kAyR95pS45Ua1yguLyI74N+BR+ uD9wHsMyKQrzFG19X0J3ZGmKhQ9sGhQx0d7dCPmr59w3yWlzvZLXH9S7Uyd1sPCe+9tA 7lN+YtMD1q8vcrccr8rCM96+DB13c5XsBsatyYRP64GXCF6RN8JXpLLiQnCAINtrC3aZ 1S6cvDKFr2Xd4o5yOSKoAoH4Mzb1prXSGfPxBCmkJ2OQYEg9PQpScVHFCK0+EPR5a/ix LF/g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to; bh=PesRHogudULc4/x9yhdrVQgI67Y/2LGQZWmhimPv3t4=; b=B0oiv2x7Y2GhLMCe8vJy6UtXUPV465PWE9E9WWV2gNQUkwKSF2ETk2WakVvNxJyW++ 1vPidlP/XbUwsYz/yianXMnCid3hwYL8xGA4lQjYGYmrdPh5mByEPROwK+gdkku6xDd+ wQzF0a02wL9jV5KSZObVS9Iyaz78tDEcfNve9EB/RrO8eSrdpNhGnGONknikNGGL2UB6 WVByX7i+4+faqAoBsfU4Eqobz4lIpFEAxCW/Z2gSoluhbDdFnk3lFRhUGHIWFfXHZyRD 4BmLLNyzZqy9CgGFVaY/Iwg5EOT+X1RuFzJN8MNhUMRHO2fYCQDytYHb3HbI2GeBFlga mN1Q== X-Gm-Message-State: AGi0Puaw2SR3ntizllEKKpwmA6Nbl3liyVQVagf4B19uidyGAQZgwfM9 WYOvo2KQRgxLnUgv0m2hCxsOVw== X-Google-Smtp-Source: APiQypLIUrIgM2XxQKdDqHVNyQcqogr57r2ycGCfdl5Lf1OXr2lVGgFDaKqXk4q7eve0zFW7IYgvLg== X-Received: by 2002:a1c:4c10:: with SMTP id z16mr9291034wmf.77.1586425498203; Thu, 09 Apr 2020 02:44:58 -0700 (PDT) Received: from myrica ([2001:171b:226b:54a0:116c:c27a:3e7f:5eaf]) by smtp.gmail.com with ESMTPSA id n6sm2998144wmc.28.2020.04.09.02.44.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Apr 2020 02:44:57 -0700 (PDT) Date: Thu, 9 Apr 2020 11:44:50 +0200 From: Jean-Philippe Brucker To: Zhangfei Gao Subject: Re: [PATCH 1/2] uacce: Remove mm_exit() op Message-ID: <20200409094450.GI2435@myrica> References: <20200408140427.212807-1-jean-philippe@linaro.org> <20200408140427.212807-2-jean-philippe@linaro.org> <5741a4d9-c3ae-f0d6-27f9-550bbeaa4c4a@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <5741a4d9-c3ae-f0d6-27f9-550bbeaa4c4a@linaro.org> Cc: gregkh@linuxfoundation.org, iommu@lists.linux-foundation.org, arnd@arndb.de, linux-accelerators@lists.ozlabs.org, jgg@ziepe.ca 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="utf-8" Content-Transfer-Encoding: base64 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" T24gVGh1LCBBcHIgMDksIDIwMjAgYXQgMDU6MDc6MzRQTSArMDgwMCwgWmhhbmdmZWkgR2FvIHdy b3RlOgo+IAo+IAo+IE9uIDIwMjAvNC84IOS4i+WNiDEwOjA0LCBKZWFuLVBoaWxpcHBlIEJydWNr ZXIgd3JvdGU6Cj4gPiBUaGUgbW1fZXhpdCgpIG9wIHdpbGwgYmUgcmVtb3ZlZCBmcm9tIHRoZSBT VkEgQVBJLiBXaGVuIGEgcHJvY2VzcyBkaWVzCj4gPiBhbmQgaXRzIG1tIGdvZXMgYXdheSwgdGhl IElPTU1VIGRyaXZlciB3b24ndCBub3RpZnkgZGV2aWNlIGRyaXZlcnMKPiA+IGFueW1vcmUuIERy aXZlcnMgc2hvdWxkIGV4cGVjdCB0byBoYW5kbGUgYSBsb3QgbW9yZSBhYm9ydGVkIERNQS4gT24g dGhlCj4gPiB1cHNpZGUsIGl0IGRvZXMgZ3JlYXRseSBzaW1wbGlmeSB0aGUgcXVldWUgbWFuYWdl bWVudC4KPiA+IAo+ID4gVGhlIHVhY2NlX21tIHN0cnVjdCwgdGhhdCB0cmFja3MgYWxsIHF1ZXVl cyBib3VuZCB0byBhbiBtbSwgd2FzIG9ubHkKPiA+IHVzZWQgYnkgdGhlIG1tX2V4aXQoKSBjYWxs YmFjay4gUmVtb3ZlIGl0Lgo+ID4gCj4gPiBTaWduZWQtb2ZmLWJ5OiBKZWFuLVBoaWxpcHBlIEJy dWNrZXIgPGplYW4tcGhpbGlwcGVAbGluYXJvLm9yZz4KPiBUaGFua3MgSmVhbiBmb3IgZG9pbmcg dGhpcy4KPiAKPiBUZXN0ZWQtYnk6IFpoYW5nZmVpIEdhbyA8emhhbmdmZWkuZ2FvQGxpbmFyby5v cmc+Cj4gCj4gRXhjZXB0IG9uZSBsaW5lLgo+ID4gLXN0YXRpYyB2b2lkIHVhY2NlX21tX3B1dChz dHJ1Y3QgdWFjY2VfcXVldWUgKnEpCj4gPiArc3RhdGljIHZvaWQgdWFjY2VfdW5iaW5kX3F1ZXVl KHN0cnVjdCB1YWNjZV9xdWV1ZSAqcSkKPiA+ICAgewo+ID4gLQlzdHJ1Y3QgdWFjY2VfbW0gKnVh Y2NlX21tID0gcS0+dWFjY2VfbW07Cj4gPiAtCj4gPiAtCWxvY2tkZXBfYXNzZXJ0X2hlbGQoJnEt PnVhY2NlLT5tbV9sb2NrKTsKPiA+IC0KPiA+IC0JbXV0ZXhfbG9jaygmdWFjY2VfbW0tPmxvY2sp Owo+ID4gLQlsaXN0X2RlbCgmcS0+bGlzdCk7Cj4gPiAtCW11dGV4X3VubG9jaygmdWFjY2VfbW0t PmxvY2spOwo+ID4gLQo+ID4gLQlpZiAobGlzdF9lbXB0eSgmdWFjY2VfbW0tPnF1ZXVlcykpIHsK PiA+IC0JCWlmICh1YWNjZV9tbS0+aGFuZGxlKQo+ID4gLQkJCWlvbW11X3N2YV91bmJpbmRfZGV2 aWNlKHVhY2NlX21tLT5oYW5kbGUpOwo+ID4gLQkJbGlzdF9kZWwoJnVhY2NlX21tLT5saXN0KTsK PiA+IC0JCWtmcmVlKHVhY2NlX21tKTsKPiA+IC0JfQo+ID4gKwlpZiAoIXEtPmhhbmRsZSkKPiA+ ICsJCXJldHVybjsKPiA+ICsJaW9tbXVfc3ZhX3VuYmluZF9kZXZpY2UocS0+aGFuZGxlKTsKPiAr IHEtPmhhbmRsZSA9IDA7Cj4gCj4gT3RoZXJ3aXNlIGlvbW11X3N2YV91bmJpbmRfZGV2aWNlIG1h eWJlIGNhbGxlZCB0d2ljZS4KPiBTaW5jZSB1YWNjZV91bmJpbmRfcXVldWUgY2FuIGJlIGNhbGxl ZCBieSB1YWNjZV9yZW1vdmUgYW5kIHVhY2NlX2ZvcHNfcmVsZWFzZS4KClRoYW5rcywgSSdsbCBh ZGQgaXQgaW4gdjIKCkplYW4KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18KaW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24u b3JnCmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lv bW11