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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 1j1AaH-0000qL-Tz; Mon, 10 Feb 2020 15:02:49 +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 1j1AaH-0000qE-B4 for xen-devel@lists.xenproject.org; Mon, 10 Feb 2020 15:02:49 +0000 X-Inumbo-ID: 669b04ce-4c16-11ea-b4d7-12813bfff9fa Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 669b04ce-4c16-11ea-b4d7-12813bfff9fa; Mon, 10 Feb 2020 15:02:48 +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 04CB1ADF8; Mon, 10 Feb 2020 15:02:48 +0000 (UTC) To: Andrew Cooper References: <20200203144340.4614-1-andrew.cooper3@citrix.com> <20200203144340.4614-5-andrew.cooper3@citrix.com> <76961409-b553-0ccc-6cd1-33ccf5cc75a0@suse.com> From: Jan Beulich Message-ID: Date: Mon, 10 Feb 2020 16:02:59 +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: Content-Language: en-US Subject: Re: [Xen-devel] [PATCH 4/4] AMD/IOMMU: Treat 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" T24gMTAuMDIuMjAyMCAxNTo1NSwgQW5kcmV3IENvb3BlciB3cm90ZToKPiBPbiAwNS8wMi8yMDIw IDEwOjM2LCBKYW4gQmV1bGljaCB3cm90ZToKPj4gT24gMDMuMDIuMjAyMCAxNTo0MywgQW5kcmV3 IENvb3BlciB3cm90ZToKPj4+IC0tLSBhL3hlbi9kcml2ZXJzL3Bhc3N0aHJvdWdoL2FtZC9pb21t dV9jbWQuYwo+Pj4gKysrIGIveGVuL2RyaXZlcnMvcGFzc3Rocm91Z2gvYW1kL2lvbW11X2NtZC5j Cj4+PiBAQCAtMjQsMTYgKzI0LDE0IEBAIHN0YXRpYyBpbnQgcXVldWVfaW9tbXVfY29tbWFuZChz dHJ1Y3QgYW1kX2lvbW11ICppb21tdSwgdTMyIGNtZFtdKQo+Pj4gIHsKPj4+ICAgICAgdWludDMy X3QgdGFpbCwgaGVhZDsKPj4+ICAKPj4+IC0gICAgdGFpbCA9IGlvbW11LT5jbWRfYnVmZmVyLnRh aWw7Cj4+PiAtICAgIGlmICggKyt0YWlsID09IGlvbW11LT5jbWRfYnVmZmVyLmVudHJpZXMgKQo+ Pj4gKyAgICB0YWlsID0gaW9tbXUtPmNtZF9idWZmZXIudGFpbCArIElPTU1VX0NNRF9CVUZGRVJf RU5UUllfU0laRTsKPj4+ICsgICAgaWYgKCB0YWlsID09IGlvbW11LT5jbWRfYnVmZmVyLnNpemUg KQo+Pj4gICAgICAgICAgdGFpbCA9IDA7Cj4+PiAgCj4+PiAtICAgIGhlYWQgPSBpb21tdV9nZXRf cmJfcG9pbnRlcihyZWFkbChpb21tdS0+bW1pb19iYXNlICsKPj4+IC0gICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgIElPTU1VX0NNRF9CVUZGRVJfSEVBRF9PRkZTRVQpKTsKPj4+ ICsgICAgaGVhZCA9IHJlYWRsKGlvbW11LT5tbWlvX2Jhc2UgKyBJT01NVV9DTURfQlVGRkVSX0hF QURfT0ZGU0VUKTsKPj4+ICAgICAgaWYgKCBoZWFkICE9IHRhaWwgKQo+PiBTdXJlbHkgeW91IHdh bnQgdG8gbWFzayBvZmYgcmVzZXJ2ZWQgKG9yIG1vcmUgZ2VuZXJhbGx5Cj4+IHVucmVsYXRlZCkg Yml0cywgYmVmb3JlIGNvbnN1bWluZyB0aGUgdmFsdWUgZm9yIHRoZSBwdXJwb3NlCj4+IGhlcmUg KGFuZCBlbHNld2hlcmUgYmVsb3cpPwo+IAo+IFJlc2VydmVkIGJpdHMgYXJlIGRlZmluZWQgaW4g dGhlIElPTU1VIHNwZWMgdG8gYmUgcmVhZC1vbmx5IHplcm8uCj4gCj4gSXQgaXMgYWxzbyB1bmRl ZmluZWQgYmVoYXZpb3VyIGZvciB0aGlzIHZhbHVlIHRvIGV2ZXIgYmUgb3V0c2lkZSBvZiB0aGUK PiBzaXplIGNvbmZpZ3VyZWQgZm9yIGNvbW1hbmQgYnVmZmVyLCBzbyB1c2luZyB0aGUgdmFsdWUg bGlrZSB0aGlzIGlzIHNwZWMKPiBjb21wbGlhbnQuCj4gCj4gQXMgZm9yIGFjdHVhbGx5IG1hc2tp bmcgdGhlIHZhbHVlcywgdGhhdCBicmVha3MgdGhlIG9wdGltaXNlcnMgYWJpbGl0eQo+IHRvIGNv bnN0cnVjdCBjb21tYW5kcyBpbiB0aGUgY29tbWFuZCByaW5nLsKgIFRoaXMgYXNwZWN0IGNhbiBi ZSB3b3JrZWQKPiBhcm91bmQgd2l0aCBvdGhlciBjb2RlIGNoYW5nZXMsIGJ1dCBJIGFsc28gdGhp bmsgaXQgaXMgaW1wbGF1c2libGUgdGhhdAo+IHRoZSByZW1haW5pbmcgcmVzZXJ2ZWQgYml0cyBo ZXJlIGFyZSBnb2luZyB0byBzcHJvdXQgaW5jb21wYXRpYmxlIGZ1dHVyZQo+IHVzZXMuCgpJbXBs YXVzaWJsZSAtIHBlcmhhcHMuIEJ1dCBpbXBvc3NpYmxlIC0gbm8uIFRoZXJlIGNvdWxkIGJlIGEg c2ltcGxlCmZsYWcgYml0IGFwcGVhcmluZyBzb21ld2hlcmUgaW4gdGhlc2UgcmVnaXN0ZXJzLiBJ IHNpbXBseSBkb24ndCBpdAppcyBhIGdvb2QgaWRlYSB0byBzZXQgYSBwcmVjZWRlbnQgb2Ygbm90 IGhvbm9yaW5nIHJlc2VydmVkIGJpdCBhcwpiZWluZyByZXNlcnZlZC4gVGhlIHNwZWMgc2F5aW5n ICJyZWFkLW9ubHkgemVybyIgY2FuIG9ubHkgYmUgdmlld2VkCmFzIGNvcnJlY3QgZm9yIHRoZSBj dXJyZW50IHZlcnNpb24gb2YgdGhlIHNwZWMsIG9yIGVsc2Ugd2h5IHdvdWxkCnRoZSBiaXRzIGJl IGNhbGxlZCAicmVzZXJ2ZWQiIHJhdGhlciB0aGFuIGUuZy4gInJlYWQtYXMtemVybyI/CgpKYW4K Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZl bCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlz dHMueGVucHJvamVjdC5vcmcvbWFpbG1hbi9saXN0aW5mby94ZW4tZGV2ZWw=