From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joao Martins Subject: Re: [RFC] netif: staging grants for requests Date: Mon, 9 Jan 2017 13:01:05 +0000 Message-ID: <58738991.1010702@oracle.com> References: <58518B40.3050408@oracle.com> <61a6676e5cf5443690bd1eb0a796d9e5@AMSPEX02CL03.citrite.net> <586FF954.7030805@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cQZWp-0006Ks-FK for xen-devel@lists.xenproject.org; Mon, 09 Jan 2017 12:58:23 +0000 In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Paul Durrant Cc: "xen-devel@lists.xenproject.org" , Stefano Stabellini , Wei Liu , Andrew Cooper List-Id: xen-devel@lists.xenproject.org T24gMDEvMDkvMjAxNyAwODo1NiBBTSwgUGF1bCBEdXJyYW50IHdyb3RlOgo+PiAtLS0tLU9yaWdp bmFsIE1lc3NhZ2UtLS0tLQo+PiBGcm9tOiBKb2FvIE1hcnRpbnMgW21haWx0bzpqb2FvLm0ubWFy dGluc0BvcmFjbGUuY29tXQo+PiBTZW50OiAwNiBKYW51YXJ5IDIwMTcgMjA6MDkKPj4gVG86IFBh dWwgRHVycmFudCA8UGF1bC5EdXJyYW50QGNpdHJpeC5jb20+Cj4+IENjOiB4ZW4tZGV2ZWxAbGlz dHMueGVucHJvamVjdC5vcmc7IEFuZHJldyBDb29wZXIKPj4gPEFuZHJldy5Db29wZXIzQGNpdHJp eC5jb20+OyBXZWkgTGl1IDx3ZWkubGl1MkBjaXRyaXguY29tPjsgU3RlZmFubwo+PiBTdGFiZWxs aW5pIDxzc3RhYmVsbGluaUBrZXJuZWwub3JnPgo+PiBTdWJqZWN0OiBSZTogW1JGQ10gbmV0aWY6 IHN0YWdpbmcgZ3JhbnRzIGZvciByZXF1ZXN0cwo+Pgo+PiBPbiAwMS8wNi8yMDE3IDA5OjMzIEFN LCBQYXVsIER1cnJhbnQgd3JvdGU6Cj4+Pj4gLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0KPj4+ PiBGcm9tOiBKb2FvIE1hcnRpbnMgW21haWx0bzpqb2FvLm0ubWFydGluc0BvcmFjbGUuY29tXQo+ Pj4+IFNlbnQ6IDE0IERlY2VtYmVyIDIwMTYgMTg6MTEKPj4+PiBUbzogeGVuLWRldmVsQGxpc3Rz LnhlbnByb2plY3Qub3JnCj4+Pj4gQ2M6IERhdmlkIFZyYWJlbCA8ZGF2aWQudnJhYmVsQGNpdHJp eC5jb20+OyBBbmRyZXcgQ29vcGVyCj4+Pj4gPEFuZHJldy5Db29wZXIzQGNpdHJpeC5jb20+OyBX ZWkgTGl1IDx3ZWkubGl1MkBjaXRyaXguY29tPjsgUGF1bAo+PiBEdXJyYW50Cj4+Pj4gPFBhdWwu RHVycmFudEBjaXRyaXguY29tPjsgU3RlZmFubyBTdGFiZWxsaW5pIDxzc3RhYmVsbGluaUBrZXJu ZWwub3JnPgo+Pj4+IFN1YmplY3Q6IFtSRkNdIG5ldGlmOiBzdGFnaW5nIGdyYW50cyBmb3IgcmVx dWVzdHMKPj4+Pgo+Pj4+IEhleSwKPj4+Pgo+Pj4+IEJhY2sgaW4gdGhlIFhlbiBoYWNrYXRvbiAn MTYgbmV0d29ya2luZyBzZXNzaW9uIHRoZXJlIHdlcmUgYSBjb3VwbGUgb2YKPj4gaWRlYXMKPj4+ PiBicm91Z2h0IHVwLiBPbmUgb2YgdGhlbSB3YXMgYWJvdXQgZXhwbG9yaW5nIHBlcm1hbmVudGx5 IG1hcHBlZAo+PiBncmFudHMKPj4+PiBiZXR3ZWVuCj4+Pj4geGVuLW5ldGJhY2sveGVuLW5ldGZy b250Lgo+Pj4+Cj4+Pj4gSSBzdGFydGVkIGV4cGVyaW1lbnRpbmcgYW5kIGNhbWUgdXAgd2l0aCBz b3J0IG9mIGEgZGVzaWduIGRvY3VtZW50IChpbgo+Pj4+IHBhbmRvYykKPj4+PiBvbiB3aGF0IGl0 IHdvdWxkIGxpa2UgdG8gYmUgcHJvcG9zZWQuIFRoaXMgaXMgbWVhbnQgYXMgYSBzZWVkIGZvcgo+ PiBkaXNjdXNzaW9uCj4+Pj4gYW5kIGFsc28gcmVxdWVzdGluZyBpbnB1dCB0byBrbm93IGlmIHRo aXMgaXMgYSBnb29kIGRpcmVjdGlvbi4gT2YgY291cnNlLCBJCj4+Pj4gYW0gd2lsbGluZyB0byB0 cnkgYWx0ZXJuYXRpdmVzIHRoYXQgd2UgY29tZSB1cCBiZXlvbmQgdGhlIGNvbnRlbnRzIG9mIHRo ZQo+Pj4+IHNwZWMsIG9yIGFueSBvdGhlciBzdWdnZXN0ZWQgY2hhbmdlcyA7KQo+Pj4+Cj4+Pj4g QW55IGNvbW1lbnRzIG9yIGZlZWRiYWNrIGlzIHdlbGNvbWUhCj4+Pj4KPj4+Cj4+PiBIaSwKPj4g SGV5IQo+Pgo+Pj4KPj4+IFNvcnJ5IGZvciB0aGUgZGVsYXkuLi4gSSd2ZSBiZWVuIE9PVE8gZm9y IHRocmVlIHdlZWtzLgo+PiBUaGFua3MgZm9yIHRoZSBjb21tZW50cyEKPj4KPj4+IEkgbGlrZSB0 aGUgZ2VuZXJhbCBhcHByb2FjaCBvciBwcmUtZ3JhbnRpbmcgYnVmZmVycyBmb3IgUlggc28gdGhh dCB0aGUKPj4gYmFja2VuZAo+Pj4gY2FuIHNpbXBseSBtZW1jcHkgYW5kIHRlbGwgdGhlIGZyb250 ZW5kIHdoaWNoIGJ1ZmZlciBhIHBhY2tldCBhcHBlYXJzIGluCj4+IENvb2wsCj4+Cj4+PiBidXQg SUlVQyB5b3UgYXJlIHByb3Bvc2luZyB1c2Ugb2YgYSBzaW5nbGUgcHJlLWdyYW50ZWQgYXJlYSBm b3IgVFggYWxzbywKPj4gd2hpY2ggd291bGQKPj4+IHByZXN1bWFibHkgcmVxdWlyZSB0aGUgZnJv bnRlbmQgdG8gYWx3YXlzIGNvcHkgb24gdGhlIFRYIHNpZGU/IEkgd29uZGVyIGlmCj4+IHdlCj4+ PiBtaWdodCBnbyBmb3IgYSBzbGlnaHRseSBkaWZmZXJlbnQgc2NoZW1lLi4uCj4+IEkgc2VlLgo+ Pgo+Pj4KPj4+IFRoZSBhc3N1bXB0aW9uIGlzIHRoYXQgdGhlIHdvcmtpbmcgc2V0IG9mIFRYIGJ1 ZmZlcnMgaW4gdGhlIGd1ZXN0IE9TIGlzIGZhaXJseQo+Pj4gc21hbGwgKHdoaWNoIGlzIHByb2Jh Ymx5IHRydWUgZm9yIGEgc21hbGwgbnVtYmVyIG9mIGhlYXZpbHkgdXNlZCBzb2NrZXRzCj4+IGFu ZCBhbgo+Pj4gT1MgdGhhdCB1c2VzIGEgc2xhYiBhbGxvY2F0b3IpLi4uCj4+IEhtbSwgW3NwZWFr aW5nIGFib3V0IGxpbnV4XSBtYXliZSBmb3IgdGhlIHNrYiBhbGxvY2F0aW9uIGNhY2hlLiBGb3Ig dGhlCj4+IHJlbWFpbmluZyBwYWNrZXQgcGFnZXMgbWF5YmUgbm90IGZvciBzYXkgYSBzY2F0aGVy LWdhdGhlciBsaXN0Li4uPyBCdXQgSSBndWVzcwo+PiBpdCB3b3VsZCBuZWVkIHRvIGJlIHZhbGlk YXRlZCB3aGV0aGVyIHRoaXMgd29ya2luZyBzZXQgaXMgaW5kZWVkIGtlcHQgc21hbGwKPj4gYXMK Pj4gdGhpcyBzZWVtcyBsaWtlIGEgdmVyeSBzdHJvbmcgYXNzdW1wdGlvbiB0byBjb21wbHkgd2l0 aCBpdHMgdmFyaW91cwo+PiBwb3NzaWJpbGl0aWVzIGluIHdvcmtsb2Fkcy4gUGx1cyB3b3VsZG4n dCB3ZSBsZWFrIGluZm8gZnJvbSB0aGVzZSBwYWdlcyBpZiBpdAo+PiB3YXNuJ3QgdXNlZCBvbiB0 aGUgZGV2aWNlIGJ1dCByYXRoZXIgZWxzZXdoZXJlIGluIHRoZSBndWVzdCBzdGFjaz8KPiAKPiBZ ZXMsIHBvdGVudGlhbGx5IHRoZXJlIGlzIGFuIGluZm9ybWF0aW9uIGxlYWsgYnV0IEkgYW0gYXNz dW1pbmcgdGhhdCB0aGUgYmFja2VuZAo+IGlzIGFsc28gdHJ1c3RlZCBieSB0aGUgZnJvbnRlbmQs IHdoaWNoIGlzIHByZXR0eSB3aWxsIGJha2VkIGludG8gdGhlIHByb3RvY29sCj4gYW55d2F5LgpJ IGFzc3VtZWQgdGhlIHNhbWUgLSBqdXN0IHRob3VnaHQgaXQgd2FzIHdvcnRoIGNsYXJpZnlpbmcu Cgo+IEFsc28sIGlmIHRoZSB3b3JraW5nIHNldCAod2hpY2ggaXMgZ29pbmcgdG8gYmUgT1Mvc3Rh Y2sgZGVwZW5kZW50KSB0dXJuZWQKPiBvdXQgdG8gYmUgYSBiaXQgdG9vIGxhcmdlIHRoZW4gdGhl IGZyb250ZW5kIGNhbiBhbHdheXMgZmFsbCBiYWNrIHRvIGEgY29weSBpbnRvIGEKPiBsb2NhbGx5 IGFsbG9jYXRlZCBidWZmZXIsIGFzIGluIHlvdXIgcHJvcG9zYWwsIGFueXdheS4KWWVhcC4KCj4+ PiBUaGUgZ3Vlc3QgVFggY29kZSBtYWludGFpbnMgYSBoYXNoIHRhYmxlIG9mIGJ1ZmZlciBhZGRy ZXNzZXMgdG8gZ3JhbnQgcmVmcy4KPj4gV2hlbgo+Pj4gYSBwYWNrZXQgaXMgc2VudCB0aGUgY29k ZSBsb29rcyB0byBzZWUgaWYgaXQgaGFzIGFscmVhZHkgZ3JhbnRlZCB0aGUgYnVmZmVyCj4+IGFu ZAo+Pj4gcmUtdXNlcyB0aGUgZXhpc3RpbmcgcmVmIGlmIHNvLCBvdGhlcndpc2UgaXQgZ3JhbnRz IHRoZSBidWZmZXIgYW5kIGFkZHMgdGhlCj4+IG5ldwo+Pj4gcmVmIGludG8gdGhlIHRhYmxlLgo+ Pgo+Pj4gVGhlIGJhY2tlbmQgYWxzbyBtYWludGFpbnMgYSBoYXNoIG9mIGdyYW50IHJlZnMgdG8g YWRkcmVzc2VzIGFuZCwKPj4gd2hlbmV2ZXIgaXQKPj4+IHNlZXMgYSBuZXcgcmVmLCBpdCBncmFu dCBtYXBzIGl0IGFuZCBhZGRzIHRoZSBhZGRyZXNzIGludG8gdGhlIHRhYmxlLgo+PiBPdGhlcndp c2UKPj4+IGl0IGRvZXMgYSBoYXNoIGxvb2t1cCBhbmQgdGh1cyBoYXMgYSBidWZmZXIgYWRkcmVz cyBpdCBjYW4gaW1tZWRpYXRlbHkKPj4gbWVtY3B5Cj4+PiBmcm9tLgo+Pj4KPj4+IElmIHRoZSBm cm9udGVuZCB3YW50cyB0aGUgYmFja2VuZCB0byByZWxlYXNlIGEgZ3JhbnQgcmVmIChlLmcuIGJl Y2F1c2UgaXQncwo+Pj4gc3RhcnRpbmcgdG8gcnVuIG91dCBvZiBncmFudCB0YWJsZSkgdGhlbiBh IGNvbnRyb2wgbWVzc2FnZSBjYW4gYmUgdXNlZCB0bwo+PiBhc2sKPj4+IGZvciBpdCBiYWNrLCBh dCB3aGljaCBwb2ludCB0aGUgYmFja2VuZCByZW1vdmVzIHRoZSByZWYgZnJvbSBpdHMgY2FjaGUg YW5kCj4+PiB1bm1hcHMgaXQuCj4+IFdvdWxkbid0IHRoaXMgYmUgc29tZXdoYXQgc2ltaWxhciB0 byB0aGUgcGVyc2lzdGVudCBncmFudHMgaW4geGVuIGJsb2NrCj4+IGRyaXZlcnM/Cj4gCj4gWWVz LCBpdCB3b3VsZCwgYW5kIEknZCByYXRoZXIgdGhhdCBwcm90b2NvbCB3YXMgYWxzbyByZS13b3Jr ZWQgaW4gdGhpcyBmYXNoaW9uLgpJIGd1ZXNzIHRoZW4gSSBjb3VsZCByZXVzZSBwYXJ0IG9mIG15 IG9sZCBzZXJpZXMgKHBlcnNpc3RlbnQgZ3JhbnRzKSBpbiB0aGlzCnJld29ya2VkIGZhc2hpb24g eW91IHN1Z2dlc3QuIEkgZGlkbid0IHdlbnQgdGhhdCByb3V0ZSBhcyBJIGhhZCB0aGUgKGFwcGFy ZW50bHkKd3JvbmcpIGltcHJlc3Npb24gdGhhdCBhIHBlcnNpc3RlbnQgZ3JhbnRzIGJhc2VkIGFw cHJvYWNoIHdlcmUgdW5kZXNpcmFibGUgKGFzIEkKdG9vayBpdCBmcm9tIHBhc3Qgc2Vzc2lvbnMp Cgo+Pj4gVXNpbmcgdGhpcyBzY2hlbWUgd2UgYWxsb3cgYSBndWVzdCBPUyB0byBzdGlsbCB1c2Ug ZWl0aGVyIGEgemVyby1jb3B5Cj4+IGFwcHJvYWNoCj4+PiBpZiBpdCB3aXNoZXMgdG8gZG8gc28s IG9yIGEgc3RhdGljIHByZS1ncmFudC4uLiBvciBzb21ldGhpbmcgYmV0d2Vlbgo+Pj4gKGUuZy4g cHJlLWdyYW50IGZvciBoZWFkZXJzLCB6ZXJvIGNvcHkgZm9yIGJ1bGsgZGF0YSkuCj4+Pgo+Pj4g RG9lcyB0aGF0IHNvdW5kIHJlYXNvbmFibGU/Cj4+IE5vdCBzdXJlIHlldCBidXQgaXQgbG9va3Mg bmljZSBpZiB3ZSBjYW4gaW5kZWVkIGFjaGlldmUgdGhlIHplcm8gY29weSBwYXJ0LiBCdXQKPj4g SSBoYXZlIHR3byBjb25jZXJuczogc2F5IGEgYmFja2VuZCBjb3VsZCBiZSBmb3JjZWQgdG8gYWx3 YXlzIHJlbW92ZSByZWZzIGFzCj4+IGl0cwo+PiBjYWNoZSBpcyBhbHdheXMgZnVsbCBoYXZpbmcg ZnJvbnRlbmQgbm90IGJlaW5nIGFibGUgdG8gcmV1c2UgdGhlc2UgcGFnZXMKPj4gKHN1YmplY3Qg dG8gaXRzIG93biBhbGxvY2F0b3IgYmVoYXZpb3IsIGluIGNhc2UgYXNzdW1wdGlvbiBhYm92ZSB3 b3VsZG4ndCBiZQo+PiBzYXRpc2ZpZWQpIG51bGxpZnlpbmcgYmFja2VuZCBlZmZvcnQgaW50byBt YWludGFpbmluZyBpdHMgbWFwcGVkIGdyZWZzIHRhYmxlLgo+PiBPbmUgb3RoZXIgY29uY2VybiBp cyB3aGV0aGVyIHRob3NlIHBhZ2VzIChhc3N1bWVkIHRvIGJlIHJldXNlZCkgbWlnaHQgYmUKPj4g bGVha2luZwo+PiBvZmYgZ3Vlc3QgZGF0YSB0byB0aGUgYmFja2VuZCAod2hlbiBub3QgdXNlZCBv biBuZXRmcm9udCkuCj4gCj4gQXMgSSBzYWlkLCB0aGUgcHJvdG9jb2wgYWxyZWFkeSByZXF1aXJl cyB0aGUgYmFja2VuZCB0byBiZSB0cnVzdGVkIGJ5IHRoZSBmcm9udGVuZAo+IChzaW5jZSBncmFu dHMgY2Fubm90IGJlIHJldm9rZWQsIGlmIGZvciBubyBvdGhlciByZWFzb24pIHNvIGluZm9ybWF0 aW9uIGxlYWthZ2UgaXMKPiBub3QgYSBwYXJ0aWN1bGFyIGNvbmNlcm4uIFdoYXQgSSB3YW50IHRv IGF2b2lkIGlzIGEgcHJvdG9jb2wgdGhhdCBkZW5pZXMgYW55Cj4gcG9zc2liaWxpdHkgb2YgemVy by1jb3B5LCBldmVuIGluIHRoZSBiZXN0IGNhc2UsIHdoaWNoIGlzIHRoZSB3YXkgdGhpbmdzIGN1 cnJlbnRseQo+IGFyZSB3aXRoIHBlcnNpc3RlbnQgZ3JhbnRzIGluIGJsa2lmLgpJJ2xsIGJlIG1v cmUgcmVhc3N1cmVkIG9uY2UgSSd2ZSBjaGVja2VkL3ZlcmlmaWVkIHRoaXMgZnJvbnRlbmQgYXNz dW1wdGlvbiBjYW4KYmUgYWNoaWV2ZWQgYnkgYSBzb21ld2hhdCB2aXNpYmxlIHBlcmNlbnRhZ2Ug b2YgdGhlIHNlbnQgcGFnZXM7IGJ1dCBzdGlsbCB5b3UndmUKZ290IGEgdmFsaWQgcG9pbnQgdGhl cmUgdGhhdCB0aGUgcHJvdG9jb2wgc2hvdWxkbid0IGJlIGZvcmNpbmcgdGhlIGd1ZXN0IE9TIGlu CmFsd2F5cyBkb2luZyBhIGNvcHkuIEhlbmNlIEkgbGlrZSBpbiBoYXZpbmcgYSBjb250cm9sIG1l c3NhZ2UgdG8gY28tbWFuYWdlIHRoZXNlCmdyZWZzIHRhYmxlLgoKSm9hbwoKX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlz dApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpodHRwczovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVs Cg==