From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Vrabel Subject: Re: [PATCH v3 1/2] Interface for grant copy operation in libs. Date: Wed, 22 Jun 2016 13:37:50 +0100 Message-ID: <576A869E.6090400@citrix.com> References: <1466584733-19459-1-git-send-email-paulinaszubarczyk@gmail.com> <1466584733-19459-2-git-send-email-paulinaszubarczyk@gmail.com> <576A5C54.7000601@citrix.com> <20160622112118.GB1790@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bFhPt-00059z-HW for xen-devel@lists.xenproject.org; Wed, 22 Jun 2016 12:38:01 +0000 In-Reply-To: <20160622112118.GB1790@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Wei Liu , David Vrabel Cc: sstabellini@kernel.org, Paulina Szubarczyk , ian.jackson@eu.citrix.com, anthony.perard@citrix.com, xen-devel@lists.xenproject.org, roger.pau@citrix.com List-Id: xen-devel@lists.xenproject.org T24gMjIvMDYvMTYgMTI6MjEsIFdlaSBMaXUgd3JvdGU6Cj4gT24gV2VkLCBKdW4gMjIsIDIwMTYg YXQgMTA6Mzc6MjRBTSArMDEwMCwgRGF2aWQgVnJhYmVsIHdyb3RlOgo+PiBPbiAyMi8wNi8xNiAw OTozOCwgUGF1bGluYSBTenViYXJjenlrIHdyb3RlOgo+Pj4gSW4gYSBsaW51eCBwYXJ0IGFuIGlv Y3RsKGdudGRldiwgSU9DVExfR05UREVWX0dSQU5UX0NPUFksIC4uKQo+Pj4gc3lzdGVtIGNhbGwg aXMgaW52b2tlZC4gSW4gbWluaS1vcyB0aGUgb3BlcmF0aW9uIGlzIHlldCBub3QKPj4+IGltcGxl bWVudGVkLiBGb3Igb3RoZXIgT1NzIHRoZXJlIGlzIGEgZHVtbXkgaW1wbGVtZW50YXRpb24uCj4+ IFsuLi5dCj4+PiAtLS0gYS90b29scy9saWJzL2dudHRhYi9saW51eC5jCj4+PiArKysgYi90b29s cy9saWJzL2dudHRhYi9saW51eC5jCj4+PiBAQCAtMjM1LDYgKzIzNSw1MSBAQCBpbnQgb3NkZXBf Z250dGFiX3VubWFwKHhlbmdudHRhYl9oYW5kbGUgKnhndCwKPj4+ICAgICAgcmV0dXJuIDA7Cj4+ PiAgfQo+Pj4gIAo+Pj4gK2ludCBvc2RlcF9nbnR0YWJfZ3JhbnRfY29weSh4ZW5nbnR0YWJfaGFu ZGxlICp4Z3QsCj4+PiArICAgICAgICAgICAgICAgICAgICAgICAgICAgIHVpbnQzMl90IGNvdW50 LAo+Pj4gKyAgICAgICAgICAgICAgICAgICAgICAgICAgICB4ZW5nbnR0YWJfZ3JhbnRfY29weV9z ZWdtZW50X3QgKnNlZ3MpCj4+PiArewo+Pj4gKyAgICBpbnQgaSwgcmM7Cj4+PiArICAgIGludCBm ZCA9IHhndC0+ZmQ7Cj4+PiArICAgIHN0cnVjdCBpb2N0bF9nbnRkZXZfZ3JhbnRfY29weSBjb3B5 Owo+Pj4gKwo+Pj4gKyAgICBjb3B5LnNlZ21lbnRzID0gY2FsbG9jKGNvdW50LCBzaXplb2Yoc3Ry dWN0IGlvY3RsX2dudGRldl9ncmFudF9jb3B5X3NlZ21lbnQpKTsKPj4+ICsgICAgY29weS5jb3Vu dCA9IGNvdW50Owo+Pj4gKyAgICBmb3IgKGkgPSAwOyBpIDwgY291bnQ7IGkrKykKPj4+ICsgICAg ewo+Pj4gKyAgICAgICAgY29weS5zZWdtZW50c1tpXS5mbGFncyA9IHNlZ3NbaV0uZmxhZ3M7Cj4+ PiArICAgICAgICBjb3B5LnNlZ21lbnRzW2ldLmxlbiA9IHNlZ3NbaV0ubGVuOwo+Pj4gKyAgICAg ICAgaWYgKHNlZ3NbaV0uZmxhZ3MgPT0gR05UQ09QWV9kZXN0X2dyZWYpIAo+Pj4gKyAgICAgICAg ewo+Pj4gKyAgICAgICAgICAgIGNvcHkuc2VnbWVudHNbaV0uZGVzdC5mb3JlaWduLnJlZiA9IHNl Z3NbaV0uZGVzdC5mb3JlaWduLnJlZjsKPj4+ICsgICAgICAgICAgICBjb3B5LnNlZ21lbnRzW2ld LmRlc3QuZm9yZWlnbi5kb21pZCA9IHNlZ3NbaV0uZGVzdC5mb3JlaWduLmRvbWlkOwo+Pj4gKyAg ICAgICAgICAgIGNvcHkuc2VnbWVudHNbaV0uZGVzdC5mb3JlaWduLm9mZnNldCA9IHNlZ3NbaV0u ZGVzdC5mb3JlaWduLm9mZnNldDsKPj4+ICsgICAgICAgICAgICBjb3B5LnNlZ21lbnRzW2ldLnNv dXJjZS52aXJ0ID0gc2Vnc1tpXS5zb3VyY2UudmlydDsKPj4+ICsgICAgICAgIH0gCj4+PiArICAg ICAgICBlbHNlIAo+Pj4gKyAgICAgICAgewo+Pj4gKyAgICAgICAgICAgIGNvcHkuc2VnbWVudHNb aV0uc291cmNlLmZvcmVpZ24ucmVmID0gc2Vnc1tpXS5zb3VyY2UuZm9yZWlnbi5yZWY7Cj4+PiAr ICAgICAgICAgICAgY29weS5zZWdtZW50c1tpXS5zb3VyY2UuZm9yZWlnbi5kb21pZCA9IHNlZ3Nb aV0uc291cmNlLmZvcmVpZ24uZG9taWQ7Cj4+PiArICAgICAgICAgICAgY29weS5zZWdtZW50c1tp XS5zb3VyY2UuZm9yZWlnbi5vZmZzZXQgPSBzZWdzW2ldLnNvdXJjZS5mb3JlaWduLm9mZnNldDsK Pj4+ICsgICAgICAgICAgICBjb3B5LnNlZ21lbnRzW2ldLmRlc3QudmlydCA9IHNlZ3NbaV0uZGVz dC52aXJ0Owo+Pj4gKyAgICAgICAgfQo+Pj4gKyAgICB9Cj4+PiArCj4+PiArICAgIHJjID0gaW9j dGwoZmQsIElPQ1RMX0dOVERFVl9HUkFOVF9DT1BZLCAmY29weSk7Cj4+PiArICAgIGlmIChyYykg Cj4+PiArICAgIHsKPj4+ICsgICAgICAgIEdURVJST1IoeGd0LT5sb2dnZXIsICJpb2N0bCBHUkFO VCBDT1BZIGZhaWxlZCAlZCAiLCBlcnJubyk7Cj4+PiArICAgIH0KPj4+ICsgICAgZWxzZSAKPj4+ ICsgICAgewo+Pj4gKyAgICAgICAgZm9yIChpID0gMDsgaSA8IGNvdW50OyBpKyspCj4+PiArICAg ICAgICAgICAgc2Vnc1tpXS5zdGF0dXMgPSBjb3B5LnNlZ21lbnRzW2ldLnN0YXR1czsKPj4+ICsg ICAgfQo+Pj4gKwo+Pj4gKyAgICBmcmVlKGNvcHkuc2VnbWVudHMpOwo+Pj4gKyAgICByZXR1cm4g cmM7Cj4+PiArfQo+Pgo+PiBJIGtub3cgV2VpIGFza2VkIGZvciB0aGlzIGJ1dCB5b3UndmUgcmVw bGFjZWQgd2hhdCBzaG91bGQgYmUgYSBzaW5nbGUKPj4gcG9pbnRlciBhc3NpZ25tZW50IHdpdGgg YSBtZW1vcnkgYWxsb2NhdGlvbiBhbmQgdHdvIGxvb3BzIG92ZXIgYWxsIHRoZQo+PiBzZWdtZW50 cy4KPj4KPj4gVGhpcyBpcyBhIGhvdCBwYXRoIGFuZCB0aGUgdHdvIHN0cnVjdHVyZXMgKHRoZSBs aWJ4ZW5nbnR0YWIgb25lIGFuZCB0aGUKPj4gTGludXgga2VybmVsIG9uZSkgYXJlIGJvdGggcGFy dCBvZiB0aGVpciByZXNwZWN0aXZlIEFCSXMgYW5kIHdvbid0Cj4+IGNoYW5nZSBzbyBXZWkncyBj b25jZXJuIHRoYXQgdGhleSBtaWdodCBjaGFuZ2UgaW4gdGhlIGZ1dHVyZSBpcyB1bmZvdW5kZWQu Cj4+Cj4gCj4gVGhlIGZ1bmRhbWVudGFsIHF1ZXN0aW9uIGlzOiB3aWxsIHRoZSBBQkkgYmV0d2Vl biB0aGUgbGlicmFyeSBhbmQgdGhlCj4ga2VybmVsIGV2ZXIgZ28gbWlzbWF0Y2g/Cj4gCj4gTXkg YW5zd2VyIGlzICJtYXliZSIuICBNeSByYXRpb25hbGUgaXMgdGhhdCBldmVyeXRoaW5nIGdvZXMg YWNyb3NzCj4gYm91bmRhcnkgb2YgY29tcG9uZW50cyBuZWVkIHRvIGJlIGNvbnNpZGVyZWQgd2l0 aCBjYXV0aW9uLiBBbmQgSSB0ZW5kIHRvCj4gYXNzdW1lIHRoZSB3b3JzdCB0aGluZ3Mgd2lsbCBo YXBwZW4uCj4gCj4gVG8gZ3VhcmFudGVlIHRoYXQgdGhleSB3aWxsIG5ldmVyIGdvIG1pc21hdGNo IGlzIHRvIGhhdmUKPiAKPiAgICB0eXBlZGVmIGlvY3RsX2dudGRldl9ncmFudF9jb3B5X3NlZ21l bnQgeGVuZ250dGFiX2dyYW50X2NvcHlfc2VnbWVudF90Owo+IAo+IEJ1dCB0aGF0J3Mgbm90IGhv dyB0aGUgY29kZSBpcyB3cml0dGVuLgo+IAo+IEkgd291bGQgbGlrZSB0byBoZWFyIGEgdGhpcmQg b3Bpbmlvbi4gSXMgbXkgY29uY2VybiB1bmZvdW5kZWQ/IEFtIEkgdG9vCj4gY2F1dGlvdXM/IElz IHRoZXJlIGFueSBjb21wZWxsaW5nIGFyZ3VtZW50IHRoYXQgSSBtaXNzZWQ/Cj4gCj4gU29tZXdo YXQgcmVsYXRlZCwgY2FuIHdlIGhhdmUgc29tZSBudW1iZXJzIHBsZWFzZT8gSXQgY291bGQgd2Vs bCBiZSB0aGUKPiBjb3N0IG9mIHRoZSB0d28gbG9vcHMgaXMgbXVjaCBjaGVhcGVyIHRoYW4gd2hh dGV2ZXIgaXMgZ29pbmcgb24gaW5zaWRlCj4gdGhlIGtlcm5lbCAvIGh5cGVydmlzb3IuIEFuZCBp dCBjb3VsZCB0dXJuIG91dCB0aGF0IHRoZSBudW1iZXJzIHJlbmRlcgo+IHRoaXMgaXNzdWUgbW9v dC4KCkkgZGlkIHNvbWUgKHZlcnkpIGFkaG9jIG1lYXN1cmVtZW50cyBhbmQgd2l0aCB0aGUgd29y c3QgY2FzZSBvZiBzaW5nbGUKc2hvcnQgc2VnbWVudHMgZm9yIGVhY2ggaW9jdGwsIHRoZSBvcHRp bWl6ZWQgdmVyc2lvbiBvZgpvc2RlcF9nbnR0YWJfZ3JhbnRfY29weSgpIGxvb2tzIHRvIGJlIH41 JSBmYXN0ZXIuCgpUaGlzIGlzIGVub3VnaCBvZiBhIGRpZmZlcmVuY2UgdGhhdCB3ZSBzaG91bGQg dXNlIHRoZSBvcHRpbWl6ZWQgdmVyc2lvbi4KClRoZSB1bm9wdGltaXplZCB2ZXJzaW9uIGFsc28g YWRkcyBhbiBhZGRpdGlvbmFsIGZhaWx1cmUgcGF0aCAodGhlCmNhbGxvYykgd2hpY2ggd291bGQg YmUgYmVzdCBhdm9pZGVkLgoKRGF2aWQKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhl bi5vcmcKaHR0cDovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==