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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 44002C33CA1 for ; Wed, 5 Feb 2020 10:23:24 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 1FC552082E for ; Wed, 5 Feb 2020 10:23:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1FC552082E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1izHpv-00051D-8r; Wed, 05 Feb 2020 10:23:11 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1izHpt-00050z-KV for xen-devel@lists.xenproject.org; Wed, 05 Feb 2020 10:23:09 +0000 X-Inumbo-ID: 7f86a286-4801-11ea-90bc-12813bfff9fa Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 7f86a286-4801-11ea-90bc-12813bfff9fa; Wed, 05 Feb 2020 10:23:06 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 7C8F5ADB3; Wed, 5 Feb 2020 10:23:05 +0000 (UTC) To: Andrew Cooper References: <20200203144340.4614-1-andrew.cooper3@citrix.com> <20200203144340.4614-4-andrew.cooper3@citrix.com> From: Jan Beulich Message-ID: Date: Wed, 5 Feb 2020 11:22:56 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.4.2 MIME-Version: 1.0 In-Reply-To: <20200203144340.4614-4-andrew.cooper3@citrix.com> Content-Language: en-US Subject: Re: [Xen-devel] [PATCH 3/4] AMD/IOMMU: Treat guest head/tail pointers as byte offsets X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Xen-devel , Wei Liu , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" T24gMDMuMDIuMjAyMCAxNTo0MywgQW5kcmV3IENvb3BlciB3cm90ZToKPiBUaGUgTU1JTyByZWdp c3RlcnMgYXMgYWxyZWFkeSBieXRlIG9mZnNldHMuICBCeSBtYXNraW5nIG91dCB0aGUgcmVzZXJ2 ZWQgYml0cwo+IHN1aXRhYmx5IGluIGd1ZXN0X2lvbW11X21taW9fd3JpdGU2NCgpLCB3ZSBjYW4g dXNlIHRoZSB2YWx1ZXMgZGlyZWN0bHksCj4gaW5zdGVhZCBvZiBtYXNraW5nL3NoaWZ0aW5nIG9u IGV2ZXJ5IHVzZS4KCkkgZ3Vlc3MgaXQncyB1bmNsZWFyIHdoZXRoZXIgc3VjaCBtYXNraW5nIG1h dGNoZXMgcmVhbCBoYXJkd2FyZQpiZWhhdmlvciwgYnV0IGl0J3MgY2VydGFpbmx5IHdpdGhpbiBz cGVjIHdpdGggYWxsIG90aGVyIGJpdHMKdGhlcmUgcmVzZXJ2ZWQuCgo+IFN0b3JlIHRoZSBidWZm ZXIgc2l6ZSwgcmF0aGVyIHRoYW4gdGhlIG51bWJlciBvZiBlbnRyaWVzLCB0byBrZWVwIHRoZSBz YW1lCj4gdW5pdHMgZm9yIGNvbXBhcmlzb24gcHVycG9zZXMuCj4gCj4gVGhpcyBzaW1wbGlmaWVz IGd1ZXN0X2lvbW11X2dldF90YWJsZV9tZm4oKSBieSBkcm9wcGluZyB0aGUgZW50cnlfc2l6ZQo+ IHBhcmFtZXRlciwgYW5kIHNpbXBsaWZpZXMgdGhlIG1hcF9kb21haW5fcGFnZSgpIGhhbmRsaW5n IGJ5IGJlaW5nIGFibGUgdG8gZHJvcAo+IHRoZSBsb2dfYmFzZSB2YXJpYWJsZXMuCj4gCj4gTm8g ZnVuY3Rpb25hbCBjaGFuZ2UuCgpXZWxsLCBub3QgZXhhY3RseSAtIHJlYWRzIG9mIHRob3NlIGhl YWQvdGFpbCByZWdpc3RlcnMgcHJldmlvdXNseQpyZXR1cm5lZCB0aGUgbGFzdCB3cml0dGVuIHZh bHVlIGFmYWljdC4KCj4gU2lnbmVkLW9mZi1ieTogQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3Bl cjNAY2l0cml4LmNvbT4KCkFja2VkLWJ5OiBKYW4gQmV1bGljaCA8amJldWxpY2hAc3VzZS5jb20+ CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2 ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRwczovL2xp c3RzLnhlbnByb2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs