From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roger Pau =?iso-8859-1?Q?Monn=E9?= Subject: Re: [PATCH RESEND 4/4] qemu-xen-dir/hw/block: Cache local buffers used in grant copy Date: Thu, 2 Jun 2016 16:19:26 +0200 Message-ID: <20160602141919.k3fio52xsvn2qj3s@mac> References: <1464669898-28495-1-git-send-email-paulinaszubarczyk@gmail.com> <1464669898-28495-5-git-send-email-paulinaszubarczyk@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1b8TTO-0001QS-5v for xen-devel@lists.xenproject.org; Thu, 02 Jun 2016 14:19:46 +0000 Content-Disposition: inline In-Reply-To: <1464669898-28495-5-git-send-email-paulinaszubarczyk@gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Paulina Szubarczyk Cc: sstabellini@kernel.org, wei.liu2@citrix.com, George.Dunlap@eu.citrix.com, ian.jackson@eu.citrix.com, P.Gawkowski@ii.pw.edu.pl, anthony.perard@citrix.com, xen-devel@lists.xenproject.org List-Id: xen-devel@lists.xenproject.org T24gVHVlLCBNYXkgMzEsIDIwMTYgYXQgMDY6NDQ6NThBTSArMDIwMCwgUGF1bGluYSBTenViYXJj enlrIHdyb3RlOgo+IElmIHRoZXJlIGFyZSBzdGlsbCBwZW5kaW5nIHJlcXVlc3RzIHRoZSBidWZm ZXJzIGFyZSBub3QgZnJlZSgpIGJ1dAo+IGNhY2hlZCBpbiBhbiBhcnJheSBvZiBhIHNpemUgbWF4 X3JlcXVlc3QqQkxLSUZfTUFYX1NFR01FTlRTX1BFUl9SRVFVRVNUCj4gCj4gLS0tCj4gIGh3L2Js b2NrL3hlbl9kaXNrLmMgfCA2MCArKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysr KysrKy0tLS0tLS0tLS0tLQo+ICAxIGZpbGUgY2hhbmdlZCwgNDcgaW5zZXJ0aW9ucygrKSwgMTMg ZGVsZXRpb25zKC0pCj4gCj4gZGlmZiAtLWdpdCBhL2h3L2Jsb2NrL3hlbl9kaXNrLmMgYi9ody9i bG9jay94ZW5fZGlzay5jCj4gaW5kZXggNDNjZDljOS4uY2Y4MDg5NyAxMDA2NDQKPiAtLS0gYS9o dy9ibG9jay94ZW5fZGlzay5jCj4gKysrIGIvaHcvYmxvY2sveGVuX2Rpc2suYwo+IEBAIC0xMjUs NiArMTI1LDEwIEBAIHN0cnVjdCBYZW5CbGtEZXYgewo+ICAgICAgLyogKi8KPiAgICAgIGdib29s ZWFuICAgICAgICAgICAgZmVhdHVyZV9kaXNjYXJkOwo+ICAKPiArICAgIC8qIHJlcXVlc3QgYnVm ZmVyIGNhY2hlICovCj4gKyAgICB2b2lkICAgICAgICAgICAgICAgICoqYnVmX2NhY2hlOwo+ICsg ICAgaW50ICAgICAgICAgICAgICAgICBidWZfY2FjaGVfZnJlZTsKCkhhdmUgeW91IGNoZWNrZWQg aWYgdGhlcmUncyBzb21lIGFscmVhZHkgYXZhaWxhYmxlIEZJRk8gcXVldWUgc3RydWN0dXJlIHRo YXQgCnlvdSBjYW4gdXNlPwoKR2xpYiBUcmFzaCBTdGFja3MgbG9va3MgbGlrZSBhIHN1aXRhYmxl IGNhbmRpZGF0ZToKCmh0dHBzOi8vZGV2ZWxvcGVyLmdub21lLm9yZy9nbGliL3N0YWJsZS9nbGli LVRyYXNoLVN0YWNrcy5odG1sCgo+ICsKPiAgICAgIC8qIHFlbXUgYmxvY2sgZHJpdmVyICovCj4g ICAgICBEcml2ZUluZm8gICAgICAgICAgICpkaW5mbzsKPiAgICAgIEJsb2NrQmFja2VuZCAgICAg ICAgKmJsazsKPiBAQCAtMjg0LDEyICsyODgsMTYgQEAgZXJyOgo+ICAgICAgcmV0dXJuIC0xOwo+ ICB9Cj4gIAo+IC0KPiAtc3RhdGljIHZvaWQqIGdldF9idWZmZXIodm9pZCkgewo+ICtzdGF0aWMg dm9pZCogZ2V0X2J1ZmZlcihzdHJ1Y3QgWGVuQmxrRGV2ICpibGtkZXYpIHsKPiAgICAgIHZvaWQg KmJ1ZjsKPiAgCj4gLSAgICBidWYgPSBtbWFwKE5VTEwsIDEgPDwgWENfUEFHRV9TSElGVCwgUFJP VF9SRUFEIHwgUFJPVF9XUklURSwgCj4gKyAgICBpZihibGtkZXYtPmJ1Zl9jYWNoZV9mcmVlIDw9 IDApIHsKPiArICAgICAgICBidWYgPSBtbWFwKE5VTEwsIDEgPDwgWENfUEFHRV9TSElGVCwgUFJP VF9SRUFEIHwgUFJPVF9XUklURSwgCj4gICAgICAgICAgICAgICAgIE1BUF9TSEFSRUQgfCBNQVBf QU5PTllNT1VTLCAtMSwgMCk7Cj4gKyAgICB9IGVsc2Ugewo+ICsgICAgICAgIGJsa2Rldi0+YnVm X2NhY2hlX2ZyZWUtLTsKPiArICAgICAgICBidWYgPSBibGtkZXYtPmJ1Zl9jYWNoZVtibGtkZXYt PmJ1Zl9jYWNoZV9mcmVlXTsKPiArICAgIH0KPiAgCj4gICAgICBpZiAodW5saWtlbHkoYnVmID09 IE1BUF9GQUlMRUQpKQo+ICAgICAgICAgIHJldHVybiBOVUxMOwo+IEBAIC0zMDEsMjEgKzMwOSw0 MCBAQCBzdGF0aWMgaW50IGZyZWVfYnVmZmVyKHZvaWQqIGJ1Zikgewo+ICAgICAgcmV0dXJuIG11 bm1hcChidWYsIDEgPDwgWENfUEFHRV9TSElGVCk7Cj4gIH0KPiAgCj4gLXN0YXRpYyBpbnQgZnJl ZV9idWZmZXJzKHZvaWQqKiBwYWdlLCBpbnQgY291bnQpIAo+ICtzdGF0aWMgaW50IGZyZWVfYnVm ZmVycyh2b2lkKiogcGFnZSwgaW50IGNvdW50LCBzdHJ1Y3QgWGVuQmxrRGV2ICpibGtkZXYpIAo+ ICB7Cj4gLSAgICBpbnQgaSwgciA9IDA7Cj4gKyAgICBpbnQgaSwgcHV0X2J1Zl9jYWNoZSA9IDAs IHIgPSAwOwo+ICsKPiArICAgIGlmIChibGtkZXYtPm1vcmVfd29yayAmJiBibGtkZXYtPnJlcXVl c3RzX2luZmxpZ2h0IDwgbWF4X3JlcXVlc3RzKSB7CgpTaG91bGRuJ3QgdGhpcyBiZSA8PT8KCk9y IGVsc2UgeW91IHdpbGwgb25seSBjYWNoZSBhdCBtb3N0IDM0MSBwYWdlcyBpbnN0ZWFkIG9mIHRo ZSBtYXhpbXVtIApudW1iZXIgb2YgcGFnZXMgdGhhdCBjYW4gYmUgaW4tZmxpZ2h0ICgzNTIpLgoK Um9nZXIuCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpY ZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHA6Ly9saXN0 cy54ZW4ub3JnL3hlbi1kZXZlbAo=