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([240e:362:4bf:e00:57d:5da4:e49:50d]) by smtp.gmail.com with ESMTPSA id k25sm16744621pfi.10.2021.01.10.19.29.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 10 Jan 2021 19:29:37 -0800 (PST) Subject: Re: [PATCH v9 05/10] uacce: Enable IOMMU_DEV_FEAT_IOPF To: Jean-Philippe Brucker , joro@8bytes.org, will@kernel.org Cc: lorenzo.pieralisi@arm.com, robh+dt@kernel.org, guohanjun@huawei.com, sudeep.holla@arm.com, rjw@rjwysocki.net, lenb@kernel.org, robin.murphy@arm.com, Jonathan.Cameron@huawei.com, eric.auger@redhat.com, iommu@lists.linux-foundation.org, devicetree@vger.kernel.org, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-accelerators@lists.ozlabs.org, baolu.lu@linux.intel.com, vdumpa@nvidia.com, shameerali.kolothum.thodi@huawei.com, vivek.gautam@arm.com, Arnd Bergmann , Greg Kroah-Hartman , Zhou Wang References: <20210108145217.2254447-1-jean-philippe@linaro.org> <20210108145217.2254447-6-jean-philippe@linaro.org> From: Zhangfei Gao Message-ID: <2cef454d-d872-d306-ceca-c7ae1dbfea1e@linaro.org> Date: Mon, 11 Jan 2021 11:29:05 +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: <20210108145217.2254447-6-jean-philippe@linaro.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org On 2021/1/8 下午10:52, Jean-Philippe Brucker wrote: > The IOPF (I/O Page Fault) feature is now enabled independently from the > SVA feature, because some IOPF implementations are device-specific and > do not require IOMMU support for PCIe PRI or Arm SMMU stall. > > Enable IOPF unconditionally when enabling SVA for now. In the future, if > a device driver implementing a uacce interface doesn't need IOPF > support, it will need to tell the uacce module, for example with a new > flag. > > Signed-off-by: Jean-Philippe Brucker > --- > Cc: Arnd Bergmann > Cc: Greg Kroah-Hartman > Cc: Zhangfei Gao > Cc: Zhou Wang Thanks Jean Acked-by: Zhangfei Gao 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=-10.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 F304DC433E0 for ; Mon, 11 Jan 2021 03:29:41 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 90F4922581 for ; Mon, 11 Jan 2021 03:29:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 90F4922581 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 hemlock.osuosl.org (Postfix) with ESMTP id 493BF86FCC; Mon, 11 Jan 2021 03:29:41 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id eoAGdLBnk-EY; Mon, 11 Jan 2021 03:29:40 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 9CA8586FC8; Mon, 11 Jan 2021 03:29:40 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 8ED9EC088B; Mon, 11 Jan 2021 03:29:40 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 68FCAC013A for ; Mon, 11 Jan 2021 03:29:39 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 5CE7185BC4 for ; Mon, 11 Jan 2021 03:29:39 +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 tFlClK2qD4xL for ; Mon, 11 Jan 2021 03:29:38 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mail-pg1-f182.google.com (mail-pg1-f182.google.com [209.85.215.182]) by fraxinus.osuosl.org (Postfix) with ESMTPS id A9DCE85BB8 for ; Mon, 11 Jan 2021 03:29:38 +0000 (UTC) Received: by mail-pg1-f182.google.com with SMTP id c22so11678730pgg.13 for ; Sun, 10 Jan 2021 19:29:38 -0800 (PST) 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=+190HtGxYGthJ3UarYG4jBGiYtQEc6153YIJJk+ijNY=; b=LuCgDnHErXxvO1PGQ6i/XYWWhYB3y1kt4JQrM24JWllHTTOymwP5NiRWkT8Yhg8jDk jEpoV5AWOIM5uezdU9++Df5S1ztN25zpvqbXVByw8NFrkzhpDhUwNRfK4OASGHK4/PXe 85Zl4tSt7+xCs8ms+/2+NIyPvvFWnNFMzb67B/WbhT7Xsoaaf8TrGbCvion0tPWzPfre qwV0j0F4imd9ZUb1/zAJgtuEZEBQ8Xt0noWtPgEUDu9eEFCk+pIdOhL85YDm7aUzFVDl Pw/MUwJ9sDVp5feHXyt3Y346Ok1YcT+vC1kdI1KfcZFDsVFgZWNuAdg1gzzK//lqS9y9 /G3w== 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=+190HtGxYGthJ3UarYG4jBGiYtQEc6153YIJJk+ijNY=; b=pFRXOervPaEyQ4EfVOOwVe2Co1BGEm47WY9rHFfflGlzUhPskDfVAQrAYloUe1UND1 wcxBf7VBrgKAW9LT9amYz9Q8Qjmw64cdbTeMz112QuDR9h2Ivnlog2/J8ny/Xox6Z1tp /0kBpYHlY/8hyJZra3LNHzogqMQBxugCQcWxWDSFNCqUTjTv/qDp86xB8nvUyU+rqN0V 7YuvpQIjoJ4Ui9lyZfrqg15bb8xnu+iRtN7nhT9ko2PPCS2w/Opr7ERUgFZ0rUucaqzl Xn88vlaRHEPK3i/Enkp6kt37aim9FyfcgRvkbTvSfvycNA4I6gGEDsZU64HxVZ91Sphj 944A== X-Gm-Message-State: AOAM530eMmfogXGnKkYJoF57NS8UDPalZ2o4TSxdm80dAx8M+BXhRZcP KYSN6TaboWoIwXSxmxUNPImoRw== X-Google-Smtp-Source: ABdhPJwwQFR7I7/0eiUTAGB7SUuXQ0WuUsz/4ODs/+uu4PeDeTMH0rlqowLXpZ/fV/xQ7w+hBPAYWg== X-Received: by 2002:a63:fb49:: with SMTP id w9mr17867506pgj.403.1610335778268; Sun, 10 Jan 2021 19:29:38 -0800 (PST) Received: from ?IPv6:240e:362:4bf:e00:57d:5da4:e49:50d? ([240e:362:4bf:e00:57d:5da4:e49:50d]) by smtp.gmail.com with ESMTPSA id k25sm16744621pfi.10.2021.01.10.19.29.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 10 Jan 2021 19:29:37 -0800 (PST) Subject: Re: [PATCH v9 05/10] uacce: Enable IOMMU_DEV_FEAT_IOPF To: Jean-Philippe Brucker , joro@8bytes.org, will@kernel.org References: <20210108145217.2254447-1-jean-philippe@linaro.org> <20210108145217.2254447-6-jean-philippe@linaro.org> From: Zhangfei Gao Message-ID: <2cef454d-d872-d306-ceca-c7ae1dbfea1e@linaro.org> Date: Mon, 11 Jan 2021 11:29:05 +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: <20210108145217.2254447-6-jean-philippe@linaro.org> Content-Language: en-US Cc: devicetree@vger.kernel.org, Arnd Bergmann , linux-acpi@vger.kernel.org, Greg Kroah-Hartman , guohanjun@huawei.com, rjw@rjwysocki.net, iommu@lists.linux-foundation.org, robh+dt@kernel.org, linux-accelerators@lists.ozlabs.org, sudeep.holla@arm.com, vivek.gautam@arm.com, robin.murphy@arm.com, linux-arm-kernel@lists.infradead.org, lenb@kernel.org 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-Transfer-Encoding: base64 Content-Type: text/plain; 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([240e:362:4bf:e00:57d:5da4:e49:50d]) by smtp.gmail.com with ESMTPSA id k25sm16744621pfi.10.2021.01.10.19.29.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 10 Jan 2021 19:29:37 -0800 (PST) Subject: Re: [PATCH v9 05/10] uacce: Enable IOMMU_DEV_FEAT_IOPF To: Jean-Philippe Brucker , joro@8bytes.org, will@kernel.org References: <20210108145217.2254447-1-jean-philippe@linaro.org> <20210108145217.2254447-6-jean-philippe@linaro.org> From: Zhangfei Gao Message-ID: <2cef454d-d872-d306-ceca-c7ae1dbfea1e@linaro.org> Date: Mon, 11 Jan 2021 11:29:05 +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: <20210108145217.2254447-6-jean-philippe@linaro.org> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210110_222940_479126_DE58EE12 X-CRM114-Status: GOOD ( 13.62 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, lorenzo.pieralisi@arm.com, Arnd Bergmann , linux-acpi@vger.kernel.org, Greg Kroah-Hartman , guohanjun@huawei.com, rjw@rjwysocki.net, shameerali.kolothum.thodi@huawei.com, eric.auger@redhat.com, iommu@lists.linux-foundation.org, robh+dt@kernel.org, linux-accelerators@lists.ozlabs.org, Jonathan.Cameron@huawei.com, sudeep.holla@arm.com, vivek.gautam@arm.com, Zhou Wang , baolu.lu@linux.intel.com, robin.murphy@arm.com, linux-arm-kernel@lists.infradead.org, lenb@kernel.org Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org CgpPbiAyMDIxLzEvOCDkuIvljYgxMDo1MiwgSmVhbi1QaGlsaXBwZSBCcnVja2VyIHdyb3RlOgo+ IFRoZSBJT1BGIChJL08gUGFnZSBGYXVsdCkgZmVhdHVyZSBpcyBub3cgZW5hYmxlZCBpbmRlcGVu ZGVudGx5IGZyb20gdGhlCj4gU1ZBIGZlYXR1cmUsIGJlY2F1c2Ugc29tZSBJT1BGIGltcGxlbWVu dGF0aW9ucyBhcmUgZGV2aWNlLXNwZWNpZmljIGFuZAo+IGRvIG5vdCByZXF1aXJlIElPTU1VIHN1 cHBvcnQgZm9yIFBDSWUgUFJJIG9yIEFybSBTTU1VIHN0YWxsLgo+Cj4gRW5hYmxlIElPUEYgdW5j b25kaXRpb25hbGx5IHdoZW4gZW5hYmxpbmcgU1ZBIGZvciBub3cuIEluIHRoZSBmdXR1cmUsIGlm Cj4gYSBkZXZpY2UgZHJpdmVyIGltcGxlbWVudGluZyBhIHVhY2NlIGludGVyZmFjZSBkb2Vzbid0 IG5lZWQgSU9QRgo+IHN1cHBvcnQsIGl0IHdpbGwgbmVlZCB0byB0ZWxsIHRoZSB1YWNjZSBtb2R1 bGUsIGZvciBleGFtcGxlIHdpdGggYSBuZXcKPiBmbGFnLgo+Cj4gU2lnbmVkLW9mZi1ieTogSmVh bi1QaGlsaXBwZSBCcnVja2VyIDxqZWFuLXBoaWxpcHBlQGxpbmFyby5vcmc+Cj4gLS0tCj4gQ2M6 IEFybmQgQmVyZ21hbm4gPGFybmRAYXJuZGIuZGU+Cj4gQ2M6IEdyZWcgS3JvYWgtSGFydG1hbiA8 Z3JlZ2toQGxpbnV4Zm91bmRhdGlvbi5vcmc+Cj4gQ2M6IFpoYW5nZmVpIEdhbyA8emhhbmdmZWku Z2FvQGxpbmFyby5vcmc+Cj4gQ2M6IFpob3UgV2FuZyA8d2FuZ3pob3UxQGhpc2lsaWNvbi5jb20+ ClRoYW5rcyBKZWFuCkFja2VkLWJ5OiBaaGFuZ2ZlaSBHYW8gPHpoYW5nZmVpLmdhb0BsaW5hcm8u b3JnPgoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxp bnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFk ZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4 LWFybS1rZXJuZWwK