From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: [Patch v11 1/3] IOMMU: add a timeout parameter for device IOTLB invalidation Date: Thu, 02 Jun 2016 04:24:49 -0600 Message-ID: <5750259102000078000F0D75@prv-mh.provo.novell.com> References: <1464771922-7794-1-git-send-email-quan.xu@intel.com> <1464771922-7794-2-git-send-email-quan.xu@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1464771922-7794-2-git-send-email-quan.xu@intel.com> Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Quan Xu Cc: dario.faggioli@citrix.com, feng.wu@intel.com, kevin.tian@intel.com, xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org Pj4+IE9uIDAxLjA2LjE2IGF0IDExOjA1LCA8cXVhbi54dUBpbnRlbC5jb20+IHdyb3RlOgo+IEZy b206IFF1YW4gWHUgPHF1YW4ueHVAaW50ZWwuY29tPgo+IAo+IFRoZSBwYXJhbWV0ZXIgJ2lvbW11 X2Rldl9pb3RsYl90aW1lb3V0JyBzcGVjaWZpZXMgdGhlIHRpbWVvdXQgb2YKPiB0aGUgZGV2aWNl IElPVExCIGludmFsaWRhdGlvbiBpbiBtaWxsaXNlY29uZHMuIEJ5IGRlZmF1bHQsIHRoZQo+IHRp bWVvdXQgaXMgMW1zLCB3aGljaCBjYW4gYmUgYm9vdC10aW1lIGNoYW5nZWQuCj4gCj4gQWRkIGEg X19tdXN0X2NoZWNrIGFubm90YXRpb24uIFRoZSBmb2xsb3d1cCBwYXRjaCB0aXRsZWQKPiAnVlQt ZCBJT1RMQi9Db250ZXh0L0lFQyBmbHVzaCBpc3N1ZScgYWRkcmVzc2VzIHRoZSBfX211c3RjaGVj ay4KPiBUaGF0IGlzIHRoZSBvdGhlciBjYWxsZXJzIG9mIHRoaXMgcm91dGluZSAodHdvIG9yIHRo cmVlIGxldmVscyB1cCkKPiBpZ25vcmUgdGhlIHJldHVybiBjb2RlLiBUaGlzIHBhdGNoIGRvZXMg bm90IGFkZHJlc3MgdGhpcyBidXQgdGhlCj4gb3RoZXIgZG9lcy4KClRoZSBkZXNjcmlwdGlvbiBy ZWFsbHkgbmVlZHMgdG8gbWVudGlvbiB0aGF0IHRoZSBkcm9wcGluZyBvZgp0aGUgcGFuaWMoKSBp cyBpbnRlbnRpb25hbCwgYW5kIHdoeS4KCj4gdjExOiBDaGFuZ2UgdGhlIHRpbWVvdXQgcGFyYW1l dGVyIGZyb20gJ3Z0ZF9xaV90aW1lb3V0JyB0bwo+ICAgICAnaW9tbXVfZGV2X2lvdGxiX3RpbWVv dXQnLCB3aGljaCBpcyBub3Qgb25seSBmb3IgVlQtZCBkZXZpY2UKPiAgICAgSU9UTEIgaW52YWxp ZGF0aW9uLCBidXQgYWxzbyBmb3Igb3RoZXIgSU9NTVUgaW1wbGVtZW50YXRpb25zLgoKVGhpcyBn b2VzIGFmdGVyIHRoZSBmaXJzdCAtLS0gc2VwYXJhdG9yLgoKPiAtLS0gYS9kb2NzL21pc2MveGVu LWNvbW1hbmQtbGluZS5tYXJrZG93bgo+ICsrKyBiL2RvY3MvbWlzYy94ZW4tY29tbWFuZC1saW5l Lm1hcmtkb3duCj4gQEAgLTk5Niw2ICs5OTYsMTUgQEAgZGVidWcgaHlwZXJ2aXNvciBvbmx5KS4K PiAgCj4gID4+IEVuYWJsZSBJT01NVSBkZWJ1Z2dpbmcgY29kZSAoaW1wbGllcyBgdmVyYm9zZWAp Lgo+ICAKPiArIyMjIGlvbW11XF9kZXZcX2lvdGxiXF90aW1lb3V0Cj4gKz4gYD0gPGludGVnZXI+ YAo+ICsKPiArPiBEZWZhdWx0OiBgMWAKClNvIG9uIHYxMCBJIGhhZCBtYWRlIGNsZWFyIHRoYXQg YW55IHRpbWVvdXQgcmVkdWN0aW9uIGZyb20gaXRzCmN1cnJlbnQgdmFsdWUgaXMsIGZvciB0aGUg QVRTIGNhc2UsIG5vdCBhY2NlcHRhYmxlLCB1bmxlc3MgeW91IGhhdmUKcHJvb2YgdGhhdCB0aGlz IGxvd2VyIHZhbHVlIHdpbGwgZml0IGFsbCBwYXN0LCBwcmVzZW50LCBhbmQgZnV0dXJlCmRldmlj ZXMuIE90aGVyd2lzZSB3ZSdyZSByaXNraW5nIGEgcmVncmVzc2lvbiBoZXJlLgoKPiAtLS0gYS94 ZW4vZHJpdmVycy9wYXNzdGhyb3VnaC92dGQvcWludmFsLmMKPiArKysgYi94ZW4vZHJpdmVycy9w YXNzdGhyb3VnaC92dGQvcWludmFsLmMKPiBAQCAtMjgsNiArMjgsOCBAQAo+ICAjaW5jbHVkZSAi dnRkLmgiCj4gICNpbmNsdWRlICJleHRlcm4uaCIKPiAgCj4gKyNkZWZpbmUgSU9NTVVfUUlfVElN RU9VVCBNSUxMSVNFQ1MoMSkKCk1heSBJIHN1Z2dlc3QgVlREX1FJX1RJTUVPVVQgKGJ1dCBzZWUg YWxzbyBiZWxvdyk/Cgo+IEBAIC0xNjMsMTQgKzE2NSwyMSBAQCBzdGF0aWMgaW50IHF1ZXVlX2lu dmFsaWRhdGVfd2FpdChzdHJ1Y3QgaW9tbXUgKmlvbW11LAo+ICAgICAgLyogTm93IHdlIGRvbid0 IHN1cHBvcnQgaW50ZXJydXB0IG1ldGhvZCAqLwo+ICAgICAgaWYgKCBzdyApCj4gICAgICB7Cj4g KyAgICAgICAgc190aW1lX3QgdGltZW91dDsKPiArCj4gICAgICAgICAgLyogSW4gY2FzZSBhbGwg d2FpdCBkZXNjcmlwdG9yIHdyaXRlcyB0byBzYW1lIGFkZHIgd2l0aCBzYW1lIGRhdGEgKi8KPiAt ICAgICAgICBzdGFydF90aW1lID0gTk9XKCk7Cj4gKyAgICAgICAgdGltZW91dCA9IGZsdXNoX2Rl dl9pb3RsYiA/Cj4gKyAgICAgICAgICAgICAgICAgIChOT1coKSArIGlvbW11X2Rldl9pb3RsYl90 aW1lb3V0ICogTUlMTElTRUNTKDEpKSA6CgpNSUxMSVNFQ1MoaW9tbXVfZGV2X2lvdGxiX3RpbWVv dXQpCgo+ICsgICAgICAgICAgICAgICAgICAoTk9XKCkgKyBJT01NVV9RSV9USU1FT1VUKTsKCk9y IHJlYWxseSB0aGUgd2hvbGUgZXhwcmVzc2lvbiBzaG91bGQgcHJvYmFibHkgc2ltcGx5IGJlY29t ZQoKICAgICAgICB0aW1lb3V0ID0gTk9XKCkgKyBNSUxMSVNFQ1MoZmx1c2hfZGV2X2lvdGxiID8g aW9tbXVfZGV2X2lvdGxiX3RpbWVvdXQgOiBWVERfUUlfVElNRU9VVCk7Cgoob2YgY291cnNlIHdp dGggVlREX1FJX1RJTUVPVVQgaGF2aW5nIGl0cyBNSUxMSVNFQ1MoKSBkcm9wcGVkLAphbmQgc3Vp dGFibHkgbGluZSB3cmFwcGVkKS4KCj4gQEAgLTM0NCwxMCArMzU1LDExIEBAIHN0YXRpYyBpbnQg X19tdXN0X2NoZWNrIGZsdXNoX2lvdGxiX3FpKHZvaWQgKl9pb21tdSwgdTE2IGRpZCwgdTY0IGFk ZHIsCj4gICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBkdywgZGlkLCBzaXplX29yZGVy LCAwLCBhZGRyKTsKPiAgICAgICAgICBpZiAoIGZsdXNoX2Rldl9pb3RsYiApCj4gICAgICAgICAg ICAgIHJldCA9IGRldl9pbnZhbGlkYXRlX2lvdGxiKGlvbW11LCBkaWQsIGFkZHIsIHNpemVfb3Jk ZXIsIHR5cGUpOwo+IC0gICAgICAgIHJjID0gaW52YWxpZGF0ZV9zeW5jKGlvbW11KTsKPiArICAg ICAgICByYyA9IGludmFsaWRhdGVfc3luYyhpb21tdSwgZmx1c2hfZGV2X2lvdGxiKTsKPiAgICAg ICAgICBpZiAoICFyZXQgKQo+ICAgICAgICAgICAgICByZXQgPSByYzsKPiAgICAgIH0KPiArCj4g ICAgICByZXR1cm4gcmV0OwoKT25jZSBhZ2FpbiBhbiBhZGRpdGlvbiBvZiBhIGJsYW5rIGxpbmUg dGhhdCBkb2Vzbid0IGJlbG9uZyBoZXJlLgoKSmFuCgoKX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxA bGlzdHMueGVuLm9yZwpodHRwOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK