From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roger Pau =?utf-8?B?TW9ubsOp?= Subject: Re: [PATCH v6 6/6] x86/iommu: add map-reserved dom0-iommu option to map reserved memory ranges Date: Tue, 21 Aug 2018 17:22:18 +0200 Message-ID: <20180821152218.4vq32prphnmqxf7d@mac> References: <20180821074944.38773-1-roger.pau@citrix.com> <20180821074944.38773-7-roger.pau@citrix.com> <5B7C155102000078001E0842@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 1fs8UW-000418-B2 for xen-devel@lists.xenproject.org; Tue, 21 Aug 2018 15:22:44 +0000 Content-Disposition: inline In-Reply-To: <5B7C155102000078001E0842@prv1-mh.provo.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Jan Beulich Cc: Kevin Tian , Stefano Stabellini , Wei Liu , George Dunlap , Andrew Cooper , Ian Jackson , Tim Deegan , Julien Grall , Paul Durrant , Suravee Suthikulpanit , xen-devel , Brian Woods List-Id: xen-devel@lists.xenproject.org T24gVHVlLCBBdWcgMjEsIDIwMTggYXQgMDc6MzY6MTdBTSAtMDYwMCwgSmFuIEJldWxpY2ggd3Jv dGU6Cj4gPj4+IE9uIDIxLjA4LjE4IGF0IDA5OjQ5LCA8cm9nZXIucGF1QGNpdHJpeC5jb20+IHdy b3RlOgo+ID4gLS0tIGEvZG9jcy9taXNjL3hlbi1jb21tYW5kLWxpbmUubWFya2Rvd24KPiA+ICsr KyBiL2RvY3MvbWlzYy94ZW4tY29tbWFuZC1saW5lLm1hcmtkb3duCj4gPiBAQCAtNzA0LDYgKzcw NCwxNSBAQCBUaGlzIGxpc3Qgb2YgYm9vbGVhbnMgY29udHJvbHMgdGhlIGlvbW11IHVzYWdlIGJ5 IERvbTA6Cj4gPiAgICBvcHRpb24gaXMgb25seSBhcHBsaWNhYmxlIHRvIGEgUFYgRG9tMCBhbmQg aXMgZW5hYmxlZCBieSBkZWZhdWx0IG9uIEludGVsCj4gPiAgICBoYXJkd2FyZS4KPiA+ICAKPiA+ ICsqIGBtYXAtcmVzZXJ2ZWRgOiBzZXRzIHVwIERNQSByZW1hcHBpbmcgZm9yIGFsbCB0aGUgcmVz ZXJ2ZWQgcmVnaW9ucyBpbiB0aGUKPiA+ICsgIG1lbW9yeSBtYXAgZm9yIERvbTAuIFVzZSB0aGlz IHRvIHdvcmsgYXJvdW5kIGZpcm13YXJlIGlzc3VlcyBwcm92aWRpbmcKPiA+ICsgIGluY29ycmVj dCBSTVJSL0lWTUQgZW50cmllcy4gUmF0aGVyIHRoYW4gb25seSBtYXBwaW5nIFJBTSBwYWdlcyBm b3IgSU9NTVUKPiA+ICsgIGFjY2Vzc2VzIGZvciBEb20wLCBhbGwgbWVtb3J5IHJlZ2lvbnMgbWFy a2VkIGFzIHJlc2VydmVkIGluIHRoZSBtZW1vcnkgbWFwCj4gPiArICB0aGF0IGRvbid0IG92ZXJs YXAgd2l0aCBhbnkgTU1JTyByZWdpb24gZnJvbSBlbXVsYXRlZCBkZXZpY2VzIHdpbGwgYmUKPiA+ ICsgIGlkZW50aXR5IG1hcHBlZC4gVGhpcyBvcHRpb24gbWFwcyBhIHN1YnNldCBvZiB0aGUgbWVt b3J5IHRoYXQgd291bGQgYmUKPiA+ICsgIG1hcHBlZCB3aGVuIHVzaW5nIHRoZSBgbWFwLWluY2x1 c2l2ZWAgb3B0aW9uLiBUaGlzIG9wdGlvbiBpcyBhdmFpbGFibGUgdG8gYQo+ID4gKyAgUFZIIERv bTAgYW5kIGlzIGVuYWJsZWQgYnkgZGVmYXVsdCBvbiBJbnRlbCBoYXJkd2FyZS4KPiAKPiBUaGlz IHNvdW5kcyBhcyBpZiB0aGUgb3B0aW9uIHdhcyBtZWFuaW5nbGVzcyBmb3IgUFYsIGJ1dCBJIGNh bid0IHNlZW0KPiB0byBzZWUgdGhpcyBiZWluZyB0aGUgY2FzZS4gVGhlIHBsYWNlcyBzZXR0aW5n IGlvbW11X2h3ZG9tX3Jlc2VydmVkCj4gZG9uJ3QgbG9vayBhdCBkb21haW4gdHlwZSBhZmFpY3Ms IGFuZCB0aGUgY2hhbmdlIHRvIHRoZSBkZWZhdWx0IGNhc2UKPiBpbiBod2RvbV9pb21tdV9tYXAo KSdzIHN3aXRjaCgpIGJsb2NrIGhhcyB0aGUgaXNfaHZtX2RvbWFpbigpIGNoZWNrCj4gaW5kZXBl bmRlbnQgb2YgdGhlIGlvbW11X2h3ZG9tX3Jlc2VydmVkIG9uZS4KClRoZSBvcHRpb24gc2hvdWxk IGJlIGZ1bmN0aW9uYWwgZm9yIFBWIGFsc28sIHNvIHRoYXQgYSB1c2VyIGNvdWxkCmhhdmU6Cgpk b20wLWlvbW11PW1hcC1pbmNsdXNpdmU9MCxtYXAtcmVzZXJ2ZWQKCj4gSSBhbHNvIHdvbmRlciBh Ym91dCB0aGUgd29yZGluZyAiaXMgYXZhaWxhYmxlIHRvIjogRm9yIGEgZG9tYWluIHR5cGUKPiBy ZXN0cmljdGlvbiwgd291bGQgIm9ubHkgdGFrZXMgZWZmZWN0IG9uIiBvciBzb21lIHN1Y2ggYmUg bW9yZSB0byB0aGUKPiBwb2ludD8KCldoYXQgYWJvdXQ6CgoiVGhpcyBvcHRpb24gaXMgYXZhaWxh YmxlIHRvIGFsbCBEb20wIG1vZGVzIGFuZCBpcyBlbmFibGVkIGJ5IGRlZmF1bHQKb24gSW50ZWwg aGFyZHdhcmUuIgoKPiA+IEBAIC0xMzgsMTYgKzEzOSwyNCBAQCBzdGF0aWMgYm9vbCBfX2h3ZG9t X2luaXQgaHdkb21faW9tbXVfbWFwKGNvbnN0IHN0cnVjdCBkb21haW4gKmQsCj4gPiAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICB1bnNpZ25lZCBsb25nIHBmbiwKPiA+ ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIHVuc2lnbmVkIGxvbmcg bWF4X3BmbikKPiA+ICB7Cj4gPiArICAgIHVuc2lnbmVkIGludCBpLCB0eXBlOwo+ID4gKwo+ID4g ICAgICAvKgo+ID4gICAgICAgKiBTZXQgdXAgMToxIG1hcHBpbmcgZm9yIGRvbTAuIERlZmF1bHQg dG8gaW5jbHVkZSBvbmx5IGNvbnZlbnRpb25hbCBSQU0KPiA+ICAgICAgICogYXJlYXMgYW5kIGxl dCBSTVJScyBpbmNsdWRlIG5lZWRlZCByZXNlcnZlZCByZWdpb25zLiBXaGVuIHNldCwgdGhlCj4g PiAgICAgICAqIGluY2x1c2l2ZSBtYXBwaW5nIGFkZGl0aW9uYWxseSBtYXBzIGluIGV2ZXJ5IHBm biB1cCB0byA0R0IgZXhjZXB0IHRob3NlCj4gPiAtICAgICAqIHRoYXQgZmFsbCBpbiB1bnVzYWJs ZSByYW5nZXMuCj4gPiArICAgICAqIHRoYXQgZmFsbCBpbiB1bnVzYWJsZSByYW5nZXMgZm9yIFBW IERvbTAuCj4gPiAgICAgICAqLwo+ID4gLSAgICBpZiAoIChwZm4gPiBtYXhfcGZuICYmICFtZm5f dmFsaWQoX21mbihwZm4pKSkgfHwgeGVuX2luX3JhbmdlKHBmbikgKQo+ID4gKyAgICBpZiAoIChw Zm4gPiBtYXhfcGZuICYmICFtZm5fdmFsaWQoX21mbihwZm4pKSkgfHwgeGVuX2luX3JhbmdlKHBm bikgfHwKPiA+ICsgICAgICAgICAvKgo+ID4gKyAgICAgICAgICAqIElnbm9yZSBhbnkgYWRkcmVz cyBiZWxvdyAxTUIsIHRoYXQncyBhbHJlYWR5IGlkZW50aXR5IG1hcHBlZCBieSB0aGUKPiA+ICsg ICAgICAgICAgKiBEb20wIGJ1aWxkZXIgZm9yIEhWTS4KPiA+ICsgICAgICAgICAgKi8KPiA+ICsg ICAgICAgICAoIWQtPmRvbWFpbl9pZCAmJiBpc19odm1fZG9tYWluKGQpICYmIHBmbiA8IFBGTl9E T1dOKE1CKDEpKSkgKQo+ID4gICAgICAgICAgcmV0dXJuIGZhbHNlOwo+ID4gIAo+ID4gLSAgICBz d2l0Y2ggKCBwYWdlX2dldF9yYW1fdHlwZShwZm4pICkKPiA+ICsgICAgdHlwZSA9IHBhZ2VfZ2V0 X3JhbV90eXBlKHBmbik7Cj4gPiArICAgIHN3aXRjaCAoIHR5cGUgKQo+IAo+IEFueSByZWFzb24g bm90IHRvIGtlZXAgdGhpcyBhIHNpbmdsZSBsaW5lLCBwdXR0aW5nIHRoZSBhc3NpZ25tZW50IGlu c2lkZQo+IHRoZSBzd2l0Y2goKT8KCkkgZG9uJ3QgbGlrZSB0byBwdXQgYXNzaWdubWVudHMgaW5z aWRlIG9mIGV4cHJlc3Npb25zLCBidXQgSSBjYW4KY2VydGFpbmx5IGRvIHRoYXQuCgo+ID4gQEAg LTE1OCwxMCArMTY3LDQxIEBAIHN0YXRpYyBib29sIF9faHdkb21faW5pdCBod2RvbV9pb21tdV9t YXAoY29uc3Qgc3RydWN0IGRvbWFpbiAqZCwKPiA+ICAgICAgICAgIGJyZWFrOwo+ID4gIAo+ID4g ICAgICBkZWZhdWx0Ogo+ID4gLSAgICAgICAgaWYgKCAhaW9tbXVfaHdkb21faW5jbHVzaXZlIHx8 IHBmbiA+IG1heF9wZm4gKQo+ID4gKyAgICAgICAgaWYgKCB0eXBlICYgUkFNX1RZUEVfUkVTRVJW RUQgKQo+ID4gKyAgICAgICAgewo+ID4gKyAgICAgICAgICAgIGlmICggIWlvbW11X2h3ZG9tX2lu Y2x1c2l2ZSAmJiAhaW9tbXVfaHdkb21fcmVzZXJ2ZWQgKQo+ID4gKyAgICAgICAgICAgICAgICBy ZXR1cm4gZmFsc2U7Cj4gPiArICAgICAgICB9Cj4gPiArICAgICAgICBlbHNlIGlmICggaXNfaHZt X2RvbWFpbihkKSB8fCAhaW9tbXVfaHdkb21faW5jbHVzaXZlIHx8IHBmbiA+IG1heF9wZm4gKQo+ ID4gICAgICAgICAgICAgIHJldHVybiBmYWxzZTsKPiA+ICAgICAgfQo+ID4gIAo+ID4gKyAgICAv Kgo+ID4gKyAgICAgKiBDaGVjayB0aGF0IGl0IGRvZXNuJ3Qgb3ZlcmxhcCB3aXRoIHRoZSBMQVBJ Qwo+ID4gKyAgICAgKiBUT0RPOiBpZiB0aGUgZ3Vlc3QgcmVsb2NhdGVzIHRoZSBNTUlPIGFyZWEg b2YgdGhlIExBUElDIG9yIElPLUFQSUMgWGVuCj4gPiArICAgICAqIHNob3VsZCBtYWtlIHN1cmUg dGhlcmUncyBub3RoaW5nIGluIHRoZSBuZXcgYWRkcmVzcyB0aGF0IHdvdWxkIHByZXZlbnQKPiA+ ICsgICAgICogdHJhcHBpbmcuCj4gPiArICAgICAqLwo+IAo+IEhtbSwgbm93IHlvdSBldmVuIG1l bnRpb24gdGhlIElPLUFQSUMgaGVyZS4gRG9lcyBvdXIgLyBxZW11J3MKPiBjaGlwc2V0IGVtdWxh dGlvbiBhbGxvdyBmb3IgdGhpcyBpbiB0aGUgZmlyc3QgcGxhY2U/CgpObywgSSBkaWRuJ3QgcmVj YWxsIHRoYXQgdGhlIElPLUFQSUMgYmFzZSBpcyBjaGFuZ2VkIGZyb20gYSByZWdpc3RlcgpvbiB0 aGUgY2hpcHNldCBhbmQgbm90IGZyb20gYSBNU1IuIEkgd2lsbCByZW1vdmUgdGhpcy4KClRoYW5r cywgUm9nZXIuCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f XwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpo dHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs