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=-15.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,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 5E84BC433C1 for ; Wed, 31 Mar 2021 05:49:24 +0000 (UTC) Received: from smtp3.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 D5FED619AB for ; Wed, 31 Mar 2021 05:49:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D5FED619AB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) 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ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Mar 2021 22:49:17 -0700 IronPort-SDR: ba+XWeIwmYW/opvq7Op8QU/aZRWkCXU2FL5Tr/qgArZ3UfIk8/4Ty91jAVH6BsylI6DKJ7XRtO 0nRvSCJ5yBdg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,291,1610438400"; d="scan'208";a="438628990" Received: from allen-box.sh.intel.com (HELO [10.239.159.128]) ([10.239.159.128]) by fmsmga004.fm.intel.com with ESMTP; 30 Mar 2021 22:49:14 -0700 Subject: Re: [RFC PATCH 2/5] iommu: Add an unmap_pages() op for IOMMU drivers To: isaacm@codeaurora.org References: <20210331030042.13348-1-isaacm@codeaurora.org> <20210331030042.13348-3-isaacm@codeaurora.org> <4c396e68a076f321ed3f406c2c875006@codeaurora.org> From: Lu Baolu Message-ID: <3a931043-71bc-88a2-ee57-be9c139e7c9f@linux.intel.com> Date: Wed, 31 Mar 2021 13:39:54 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 MIME-Version: 1.0 In-Reply-To: <4c396e68a076f321ed3f406c2c875006@codeaurora.org> Content-Language: en-US Cc: will@kernel.org, iommu@lists.linux-foundation.org, robin.murphy@arm.com, linux-arm-kernel@lists.infradead.org, pratikp@codeaurora.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; charset="utf-8"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" T24gMy8zMS8yMSAxOjM2IFBNLCBpc2FhY21AY29kZWF1cm9yYS5vcmcgd3JvdGU6Cj4gT24gMjAy MS0wMy0zMCAyMTo0NywgTHUgQmFvbHUgd3JvdGU6Cj4+IE9uIDMvMzEvMjEgMTE6MDAgQU0sIElz YWFjIEouIE1hbmphcnJlcyB3cm90ZToKPj4+IEFkZCBhIGNhbGxiYWNrIGZvciBJT01NVSBkcml2 ZXJzIHRvIHByb3ZpZGUgYSBwYXRoIGZvciB0aGUKPj4+IElPTU1VIGZyYW1ld29yayB0byBjYWxs IGludG8gYW4gSU9NTVUgZHJpdmVyLCB3aGljaCBjYW4gY2FsbAo+Pj4gaW50byB0aGUgaW8tcGd0 YWJsZSBjb2RlLCB0byB1bm1hcCBhIHZpcnR1YWxseSBjb250aWd1b3VzCj4+PiByYW5nZSBvZiBw 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fmsmga004.fm.intel.com with ESMTP; 30 Mar 2021 22:49:14 -0700 Cc: baolu.lu@linux.intel.com, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, will@kernel.org, robin.murphy@arm.com, pratikp@codeaurora.org Subject: Re: [RFC PATCH 2/5] iommu: Add an unmap_pages() op for IOMMU drivers To: isaacm@codeaurora.org References: <20210331030042.13348-1-isaacm@codeaurora.org> <20210331030042.13348-3-isaacm@codeaurora.org> <4c396e68a076f321ed3f406c2c875006@codeaurora.org> From: Lu Baolu Message-ID: <3a931043-71bc-88a2-ee57-be9c139e7c9f@linux.intel.com> Date: Wed, 31 Mar 2021 13:39:54 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 MIME-Version: 1.0 In-Reply-To: <4c396e68a076f321ed3f406c2c875006@codeaurora.org> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210331_064927_309993_6B8C2AFB X-CRM114-Status: GOOD ( 24.36 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 T24gMy8zMS8yMSAxOjM2IFBNLCBpc2FhY21AY29kZWF1cm9yYS5vcmcgd3JvdGU6Cj4gT24gMjAy MS0wMy0zMCAyMTo0NywgTHUgQmFvbHUgd3JvdGU6Cj4+IE9uIDMvMzEvMjEgMTE6MDAgQU0sIElz YWFjIEouIE1hbmphcnJlcyB3cm90ZToKPj4+IEFkZCBhIGNhbGxiYWNrIGZvciBJT01NVSBkcml2 ZXJzIHRvIHByb3ZpZGUgYSBwYXRoIGZvciB0aGUKPj4+IElPTU1VIGZyYW1ld29yayB0byBjYWxs IGludG8gYW4gSU9NTVUgZHJpdmVyLCB3aGljaCBjYW4gY2FsbAo+Pj4gaW50byB0aGUgaW8tcGd0 YWJsZSBjb2RlLCB0byB1bm1hcCBhIHZpcnR1YWxseSBjb250aWd1b3VzCj4+PiByYW5nZSBvZiBw YWdlcyBvZiB0aGUgc2FtZSBzaXplLgo+Pj4KPj4+IEZvciBJT01NVSBkcml2ZXJzIHRoYXQgZG8g bm90IHNwZWNpZnkgYW4gdW5tYXBfcGFnZXMoKSBjYWxsYmFjaywKPj4+IHRoZSBleGlzdGluZyBs 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