From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Durrant Subject: Re: [PATCH v6 01/14] iommu: introduce the concept of BFN... Date: Thu, 6 Sep 2018 10:36:58 +0000 Message-ID: <707e1cd819cf4dbc996c80c936d25606@AMSPEX02CL03.citrite.net> References: <20180823094711.21376-1-paul.durrant@citrix.com> <20180823094711.21376-2-paul.durrant@citrix.com> <5B88147F02000078001E39FB@prv1-mh.provo.novell.com> <5B8D1F2602000078001E48B5@prv1-mh.provo.novell.com> <5B8E432E02000078001E4FB5@prv1-mh.provo.novell.com> <5B8E469802000078001E4FE5@prv1-mh.provo.novell.com> <777ac29dd97a46938eec6c00ecf51e32@AMSPEX02CL03.citrite.net> <5B8E4B8A02000078001E505A@prv1-mh.provo.novell.com> <5B8F7C5202000078001E559F@prv1-mh.provo.novell.com> <5B8F81B302000078001E55C9@prv1-mh.provo.novell.com> <5B8FA41B02000078001E56E4@prv1-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from all-amaz-eas1.inumbo.com ([34.197.232.57]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1fxren-0003IN-Od for xen-devel@lists.xenproject.org; Thu, 06 Sep 2018 10:37:01 +0000 In-Reply-To: <5B8FA41B02000078001E56E4@prv1-mh.provo.novell.com> Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: 'Jan Beulich' Cc: xen-devel , Julien Grall , Stefano Stabellini , Kevin Tian , Suravee Suthikulpanit List-Id: xen-devel@lists.xenproject.org PiAtLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQo+IEZyb206IEphbiBCZXVsaWNoIFttYWlsdG86 SkJldWxpY2hAc3VzZS5jb21dCj4gU2VudDogMDUgU2VwdGVtYmVyIDIwMTggMTA6MzkKPiBUbzog UGF1bCBEdXJyYW50IDxQYXVsLkR1cnJhbnRAY2l0cml4LmNvbT4KPiBDYzogU3VyYXZlZSBTdXRo aWt1bHBhbml0IDxzdXJhdmVlLnN1dGhpa3VscGFuaXRAYW1kLmNvbT47IEp1bGllbiBHcmFsbAo+ IDxqdWxpZW4uZ3JhbGxAYXJtLmNvbT47IEtldmluIFRpYW4gPGtldmluLnRpYW5AaW50ZWwuY29t PjsgU3RlZmFubwo+IFN0YWJlbGxpbmkgPHNzdGFiZWxsaW5pQGtlcm5lbC5vcmc+OyB4ZW4tZGV2 ZWwgPHhlbi0KPiBkZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZz4KPiBTdWJqZWN0OiBSRTogW1hl bi1kZXZlbF0gW1BBVENIIHY2IDAxLzE0XSBpb21tdTogaW50cm9kdWNlIHRoZSBjb25jZXB0IG9m Cj4gQkZOLi4uCj4gCj4gPj4+IE9uIDA1LjA5LjE4IGF0IDExOjEzLCA8UGF1bC5EdXJyYW50QGNp dHJpeC5jb20+IHdyb3RlOgo+ID4+ICAtLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQo+ID4+IEZy b206IEphbiBCZXVsaWNoIFttYWlsdG86SkJldWxpY2hAc3VzZS5jb21dCj4gPj4gU2VudDogMDUg U2VwdGVtYmVyIDIwMTggMDg6MTIKPiA+PiBUbzogS2V2aW4gVGlhbiA8a2V2aW4udGlhbkBpbnRl bC5jb20+Cj4gPj4gQ2M6IFN1cmF2ZWUgU3V0aGlrdWxwYW5pdCA8c3VyYXZlZS5zdXRoaWt1bHBh bml0QGFtZC5jb20+OyBKdWxpZW4gR3JhbGwKPiA+PiA8anVsaWVuLmdyYWxsQGFybS5jb20+OyBQ YXVsIER1cnJhbnQgPFBhdWwuRHVycmFudEBjaXRyaXguY29tPjsKPiBTdGVmYW5vCj4gPj4gU3Rh YmVsbGluaSA8c3N0YWJlbGxpbmlAa2VybmVsLm9yZz47IHhlbi1kZXZlbCA8eGVuLQo+ID4+IGRl dmVsQGxpc3RzLnhlbnByb2plY3Qub3JnPgo+ID4+IFN1YmplY3Q6IFJFOiBbWGVuLWRldmVsXSBb UEFUQ0ggdjYgMDEvMTRdIGlvbW11OiBpbnRyb2R1Y2UgdGhlIGNvbmNlcHQKPiBvZgo+ID4+IEJG Ti4uLgo+ID4+Cj4gPj4gPj4+IE9uIDA1LjA5LjE4IGF0IDA4OjU2LCA8a2V2aW4udGlhbkBpbnRl bC5jb20+IHdyb3RlOgo+ID4+ID4+ICBGcm9tOiBKYW4gQmV1bGljaCBbbWFpbHRvOkpCZXVsaWNo QHN1c2UuY29tXQo+ID4+ID4+IFNlbnQ6IFdlZG5lc2RheSwgU2VwdGVtYmVyIDUsIDIwMTggMjo0 OSBQTQo+ID4+ID4+Cj4gPj4gPj4gPj4+IE9uIDA1LjA5LjE4IGF0IDAyOjQyLCA8a2V2aW4udGlh bkBpbnRlbC5jb20+IHdyb3RlOgo+ID4+ID4+ID4+ICBGcm9tOiBKYW4gQmV1bGljaCBbbWFpbHRv OkpCZXVsaWNoQHN1c2UuY29tXQo+ID4+ID4+ID4+IFNlbnQ6IFR1ZXNkYXksIFNlcHRlbWJlciA0 LCAyMDE4IDU6MDggUE0KPiA+PiA+PiA+Pgo+ID4+ID4+ID4+ID4+PiBPbiAwNC4wOS4xOCBhdCAx MDo0OSwgPFBhdWwuRHVycmFudEBjaXRyaXguY29tPiB3cm90ZToKPiA+PiA+PiA+PiA+PiAgLS0t LS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0KPiA+PiA+PiA+PiA+PiBGcm9tOiBKYW4gQmV1bGljaCBb bWFpbHRvOkpCZXVsaWNoQHN1c2UuY29tXQo+ID4+ID4+ID4+ID4+IFNlbnQ6IDA0IFNlcHRlbWJl ciAyMDE4IDA5OjQ3Cj4gPj4gPj4gPj4gPj4gVG86IEtldmluIFRpYW4gPGtldmluLnRpYW5AaW50 ZWwuY29tPgo+ID4+ID4+ID4+ID4+IENjOiBTdXJhdmVlIFN1dGhpa3VscGFuaXQgPHN1cmF2ZWUu c3V0aGlrdWxwYW5pdEBhbWQuY29tPjsKPiA+PiBKdWxpZW4KPiA+PiA+PiA+PiBHcmFsbAo+ID4+ ID4+ID4+ID4+IDxqdWxpZW4uZ3JhbGxAYXJtLmNvbT47IFBhdWwgRHVycmFudAo+IDxQYXVsLkR1 cnJhbnRAY2l0cml4LmNvbT47Cj4gPj4gPj4gPj4gU3RlZmFubwo+ID4+ID4+ID4+ID4+IFN0YWJl bGxpbmkgPHNzdGFiZWxsaW5pQGtlcm5lbC5vcmc+OyB4ZW4tZGV2ZWwgPHhlbi0KPiA+PiA+PiA+ PiA+PiBkZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZz4KPiA+PiA+PiA+PiA+PiBTdWJqZWN0OiBS ZTogW1hlbi1kZXZlbF0gW1BBVENIIHY2IDAxLzE0XSBpb21tdTogaW50cm9kdWNlIHRoZQo+ID4+ ID4+IGNvbmNlcHQKPiA+PiA+PiA+PiBvZgo+ID4+ID4+ID4+ID4+IEJGTi4uLgo+ID4+ID4+ID4+ ID4+Cj4gPj4gPj4gPj4gPj4gPj4+IE9uIDA0LjA5LjE4IGF0IDEwOjM3LCA8a2V2aW4udGlhbkBp bnRlbC5jb20+IHdyb3RlOgo+ID4+ID4+ID4+ID4+ID4+ICBGcm9tOiBKYW4gQmV1bGljaCBbbWFp bHRvOkpCZXVsaWNoQHN1c2UuY29tXQo+ID4+ID4+ID4+ID4+ID4+IFNlbnQ6IFR1ZXNkYXksIFNl cHRlbWJlciA0LCAyMDE4IDQ6MzMgUE0KPiA+PiA+PiA+PiA+PiA+PiA+Cj4gPj4gPj4gPj4gPj4g Pj4gPiBidXMgYWRkcmVzcyBpcyBjb21tb25seSB1c2VkIGFsb25nIHdpdGggcGh5c2ljYWwvdmly dHVhbAo+ID4+ID4+IGFkZHJlc3MsCj4gPj4gPj4gPj4gdG8KPiA+PiA+PiA+PiA+PiA+PiA+IHJl cHJlc2VudCBkaWZmZXJlbnQgdmlld3MgYmV0d2VlbiBkZXZpY2VzIGFuZCBDUFUuIEZyb20KPiA+ PiB0aGF0Cj4gPj4gPj4gPj4gYW5nbGUKPiA+PiA+PiA+PiA+PiA+PiA+IEkgdGhpbmsgQkZOIGlz IGEgY2xlYXIgdGVybSBpbiB0aGlzIGNvbnRleHQuIGJ0dyBpdCBpcyBub3QKPiA+PiBuZWNlc3Nh cnkKPiA+PiA+PiB0bwo+ID4+ID4+ID4+ID4+ID4+ID4gZGlmZmVyZW50aWF0ZSBHQkZOIGFuZCBN QkZOIHNpbmNlIHRoZXJlIGlzIG9ubHkgb25lIEJGTgo+IHZpZXcKPiA+PiA+PiBwZXIKPiA+PiA+ PiA+PiA+PiA+PiA+IGRldmljZS4KPiA+PiA+PiA+PiA+PiA+Pgo+ID4+ID4+ID4+ID4+ID4+IFN1 cmUsIGJ1dCB5b3UgbmVnbGVjdCB0aGUgcHJlc2VuY2Ugb2Ygb25lIG9yIG1vcmUgSU9NTVVzCj4g Pj4gd2hlbgo+ID4+ID4+ID4+ID4+ID4+IHlvdSBzYXkgImJldHdlZW4gZGV2aWNlcyBhbmQgQ1BV Ii4gVGhlcmUgYWRkcmVzc2VzIHByaW9yCj4gdG8KPiA+PiBhbmQKPiA+PiA+PiA+PiA+PiA+PiBh ZnRlciBJT01NVSB0cmFuc2xhdGlvbiBhcmUgZGlzdGluY3QsIGFuZCB3aGlsZSB0aGUgb25lCj4g YmVmb3JlCj4gPj4gdGhlCj4gPj4gPj4gPj4gPj4gPj4gdHJhbnNsYXRpb24gbWF0Y2hlcyB0aGUg ZGV2aWNlIHZpZXcsIHRoZSBvbmUgYWZ0ZXIgdHJhbnNsYXRpb24KPiA+PiBkb2VzCj4gPj4gPj4g Pj4gPj4gPj4gbm90IG5lY2Vzc2FyaWx5IG1hdGNoIHRoZSBDUFUgdmlldy4gSGVuY2UgdGhlcmUg YXJlIHR3bwo+ICJidXMiCj4gPj4gPj4gPj4gPj4gPj4gZnJhbWUgbnVtYmVycyBoZXJlIC0gb25l IHJlcHJlc2VudGluZyB0aGUgZGV2aWNlIHZpZXcsIGFuZAo+ID4+IHRoZQo+ID4+ID4+ID4+ID4+ ID4+IG90aGVyIHJlcHJlc2VudGluZyB0aGUgSU9NTVUgKG91dHB1dCkgdmlldy4KPiA+PiA+PiA+ PiA+PiA+Pgo+ID4+ID4+ID4+ID4+ID4KPiA+PiA+PiA+PiA+PiA+IEkgZGlkbid0IGdldC4gdGhl IG91dHB1dCBhZGRyZXNzIGZyb20gSU9NTVUgaXMgdGhlIG9uZSBzZW50Cj4gdG8KPiA+PiA+PiA+ PiA+PiA+IG1lbW9yeSBjb250cm9sbGVyLCBzYW1lIGFzIHRoZSBvbmUgc2VudCBmcm9tIENQVS4K PiA+PiA+PiA+PiA+Pgo+ID4+ID4+ID4+ID4+IFRoYXQncyBvbiBwcmVzZW50IHg4NiBzeXN0ZW1z LCBidXQgYWl1aSBub3QgaW4gdGhlIGdlbmVyYWwgY2FzZS4KPiBUaGUKPiA+PiA+PiA+PiA+PiB0 ZXJtaW5vbG9neSB0byBiZSB1c2VkIGluIFhlbiBzaG91bGQgZml0IHRoZSBnZW5lcmFsIGNhc2UK PiB0aG91Z2guCj4gPj4gPj4gPj4gPgo+ID4+ID4+ID4+ID4gU28geW91ciBjb25jZXJuIGlzIGNh c2NhZGVkIElPTU1Vcz8KPiA+PiA+PiA+Pgo+ID4+ID4+ID4+IE5vdCBwcmltYXJpbHkuIE15IGNv bmNlcm4gYXJlIHN5c3RlbXMgd2l0aCBhbiBJL08gYWRkcmVzcyBzcGFjZQo+ID4+ID4+ID4+IChi ZWhpbmQgdGhlIElPTU1VKSBkaXN0aW5jdCBmcm9tIHRoZSBDUFUgYWRkcmVzcyBzcGFjZS4gSWly YyBhdAo+ID4+ID4+ID4+IGxlYXN0IEFscGhhIGlzL3dhcyB0aGF0IHdheS4KPiA+PiA+PiA+Pgo+ ID4+ID4+ID4KPiA+PiA+PiA+IFRoZW4gUGF1bCBwbGVhc2UgZG9jdW1lbnRzIGNsZWFybHkgdGhh dCB0aGlzIGJ1cyBhZGRyZXNzIHJlZmVycyB0bwo+ID4+ID4+ID4gdGhlIGlucHV0IHNpZGUgb2Yg SU9NTVUuIDotKQo+ID4+ID4+Cj4gPj4gPj4gQnV0IHdoZW4gcmVhZGluZyBjb2RlIHlvdSBjYW4n dCBhbHdheXMgZ28gYmFjayB0byBsb29rIGF0IHRoZSBvbmUKPiA+PiA+PiBwbGFjZSB3aGVyZSBp dHMgbWVhbmluZyBpcyBkb2N1bWVudGVkLiBIZW5jZSBteSBkZXNpcmUgZm9yIGEgbmFtZQo+ID4+ ID4+IHdoaWNoIHByb3Blcmx5IGNvbnZleXMgdGhlIG1lYW5pbmcuCj4gPj4gPj4KPiA+PiA+Cj4g Pj4gPiBUaGVuIHBvc3NpYmx5IGdvIGJhY2sgdG8gREZOLCBidXQgdGFrZSAnRCcgYXMgRE1BIGlu c3RlYWQgb2YgZGV2aWNlPwo+ID4+Cj4gPj4gSG93IHdvdWxkICJETUEiIGJlIGFueSBiZXR0ZXIg dGhhbiAiYnVzIj8gV2hvc2UgdmlldyBpdCBpcyB0aGVuIHN0aWxsCj4gPj4gaXMgdW5jbGVhci4K PiA+Pgo+ID4KPiA+IFBlcnNvbmFsbHkgSSB0aGluayAnYnVzIGFkZHJlc3MnIGlzIGNvbW1vbmx5 IGVub3VnaCB1c2VkIHRlcm0gZm9yCj4gYWRkcmVzc2VzCj4gPiB1c2VkIGJ5IGRldmljZXMgZm9y IERNQS4gSW5kZWVkIHdlIGhhdmUgYWxyZWFkeSAnZGV2X2J1c19hZGRyJyBpbiB0aGUKPiBncmFu dAo+ID4gbWFwIGFuZCB1bm1hcCBoeXBlcmNhbGxzLiBTbyBiYWRkciBhbmQgYmZuIHNlZW0gbGlr ZSBvayB0ZXJtcyB0byBtZS4gSXQncwo+ID4gYWxzbyBub3QgaW1wb3NzaWJsZSB0byByZW5hbWUg dGhlc2UgbGF0ZXIgaWYgdGhleSBwcm92ZSBwcm9ibGVtYXRpYy4KPiAKPiBCdXQgdGhhdCdzIHRo ZSBwb2ludCAtIHRoZSBuYW1lcyBhcmUgcHJvYmxlbWF0aWMgKHRvIG1lKTogSSBwZXJtYW5lbnRs eQo+IGhhdmUgdG8gcmVtaW5kIG15c2VsZiB0aGF0IHRoZXkgZG8gX25vdF8gcmVmZXIgdG8gdGhl IGFkZHJlc3NlcyBhcwo+IHNlZW4gd2hlbiBhY2Nlc3NpbmcgbWVtb3J5LCBidXQgdGhlIG9uZXMg Z29pbmcgX2ludG9fIHRoZSBJT01NVS4KCk9rLiBDb3VsZCB3ZSBhZ3JlZSBvbiAnSU9GTicgdGhl bj8gSSB0aGluayAnaW92YScgYW5kICdpbyBhZGRyZXNzJyBhcmUgYWxzbyByZWFzb25hYmx5IHdp ZGVseSB1c2VkIHRlcm1zIHRvIHJlZmVyIHRvIGFkZHJlc3MgZnJvbSBhIGRldmljZSdzIFBvVi4g SSdkIHJlYWxseSBsaWtlIHRvIHVuYmxvY2sgdGhlc2UgZWFybHkgcGF0Y2hlcy4KCj4gVGhlIGNv bmZ1c2lvbiAob24gbXkgcGFydCkgYXJpc2VzIGV2ZXJ5IHRpbWUgSSBzZWUgYSBtaXh0dXJlIG9m IGdmbiwgYmZuLAo+IGFuZCBtZm4gaW4gdGhlIHNhbWUgcGF0Y2gsIHBlcmhhcHMgaW5jbHVkaW5n IHNvbWUgMToxLW5lc3MgYXNzdW1wdGlvbnMKPiBiZXR3ZWVuIHBhaXJzIG9mIHRoZW0uCj4gCj4g VGFrZSB0aGVzZSB0d28gaHVua3MgYXMgZXhhbXBsZSAobWl4aW5nIGluIHNvbWUgcGZuIGFzIHdl bGwpOgo+IAo+IEBAIC00MzYsNyArNDM2LDcgQEAgc3RhdGljIGludCBpb21tdV9tZXJnZV9wYWdl cyhzdHJ1Y3QgZG9tYWluICpkLAo+IHVuc2lnbmVkIGxvbmcgcHRfbWZuLAo+ICAgKiB7UmUsIHVu fW1hcHBpbmcgc3VwZXIgcGFnZSBmcmFtZXMgY2F1c2VzIHJlLWFsbG9jYXRpb24gb2YgaW8KPiAg ICogcGFnZSB0YWJsZXMuCj4gICAqLwo+IC1zdGF0aWMgaW50IGlvbW11X3BkZV9mcm9tX2dmbihz dHJ1Y3QgZG9tYWluICpkLCB1bnNpZ25lZCBsb25nIHBmbiwKPiArc3RhdGljIGludCBpb21tdV9w ZGVfZnJvbV9iZm4oc3RydWN0IGRvbWFpbiAqZCwgdW5zaWduZWQgbG9uZyBwZm4sCj4gICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgIHVuc2lnbmVkIGxvbmcgcHRfbWZuW10pCj4gIHsKPiAg ICAgIHU2NCAqcGRlLCAqbmV4dF90YWJsZV92YWRkcjsKPiBAQCAtNDc3LDExICs0NzcsMTEgQEAg c3RhdGljIGludCBpb21tdV9wZGVfZnJvbV9nZm4oc3RydWN0IGRvbWFpbiAqZCwKPiB1bnNpZ25l ZCBsb25nIHBmbiwKPiAgICAgICAgICAgICAgIG5leHRfdGFibGVfbWZuICE9IDAgKQo+ICAgICAg ICAgIHsKPiAgICAgICAgICAgICAgaW50IGk7Cj4gLSAgICAgICAgICAgIHVuc2lnbmVkIGxvbmcg bWZuLCBnZm47Cj4gKyAgICAgICAgICAgIHVuc2lnbmVkIGxvbmcgbWZuLCBiZm47Cj4gICAgICAg ICAgICAgIHVuc2lnbmVkIGludCBwYWdlX3N6Owo+IAo+ICAgICAgICAgICAgICBwYWdlX3N6ID0g MSA8PCAoUFRFX1BFUl9UQUJMRV9TSElGVCAqIChuZXh0X2xldmVsIC0gMSkpOwo+IC0gICAgICAg ICAgICBnZm4gPSAgcGZuICYgfigoMSA8PCAoUFRFX1BFUl9UQUJMRV9TSElGVCAqIG5leHRfbGV2 ZWwpKSAtIDEpOwo+ICsgICAgICAgICAgICBiZm4gPSAgcGZuICYgfigoMSA8PCAoUFRFX1BFUl9U QUJMRV9TSElGVCAqIG5leHRfbGV2ZWwpKSAtIDEpOwoKVGhpcyBpcyBub3Qgd29uZGVyZnVsIGNv ZGUsIGFncmVlZC4gSW4gdGhpcyBwYXJ0aWN1bGFyIGNhc2UgaXQgbG9va3MgbGlrZSBJIG1heSBi ZSBhYmxlIHRvIGp1c3QgcmVuYW1lIHRoZSBwZm4gYXJndW1lbnQgdG8gaW9mbiAoYXNzdW1pbmcg d2UgZ28gd2l0aCB0aGF0IG5hbWUpIGFuZCBsb3NlIHRoZSBzdGFjayB2YXJpYWJsZSwgaWYgdGhh dCBoZWxwcy4KCiAgUGF1bAoKPiAgICAgICAgICAgICAgbWZuID0gbmV4dF90YWJsZV9tZm47Cj4g Cj4gICAgICAgICAgICAgIC8qIGFsbG9jYXRlIGxvd2VyIGxldmVsIHBhZ2UgdGFibGUgKi8KPiAK PiBKYW4KCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpY ZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs