From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Durrant Subject: Re: [PATCH 5/7] public / x86: introduce __HYPERCALL_iommu_op Date: Tue, 27 Feb 2018 09:32:42 +0000 Message-ID: References: <20180212104714.1922-1-paul.durrant@citrix.com> <20180212104714.1922-6-paul.durrant@citrix.com> <5ed4994c89994703b24e607c5f183e68@AMSPEX02CL03.citrite.net> <6c5e1abad397407e8dbed6e3945c68be@AMSPEX02CL03.citrite.net> <88e69f29f4d243eb8b9df40277e48085@AMSPEX02CL03.citrite.net> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eqbd4-0008Uv-Ho for xen-devel@lists.xenproject.org; Tue, 27 Feb 2018 09:32:58 +0000 In-Reply-To: Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Kevin Tian , "xen-devel@lists.xenproject.org" Cc: Stefano Stabellini , Wei Liu , Andrew Cooper , "Tim (Xen.org)" , George Dunlap , Jan Beulich , Ian Jackson , Daniel De Graaf List-Id: xen-devel@lists.xenproject.org PiAtLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQ0KW3NuaXBdDQo+ID4gSSdsbCBkZWZpbmUgc29t ZSB0ZXJtcyB0byB0cnkgdG8gYXZvaWQgY29uZnVzaW5nLi4uDQo+ID4NCj4gPiAtIHdoZXJlIHRo ZSBJT01NVSBjb2RlIGluIFhlbiBtYWludGFpbnMgYSBtYXAgc3VjaCB0aGF0IEJGTiA9PSBNRk4s DQo+ID4gbGV04oCZcyBjYWxsIHRoaXMgYW4gJ2lkZW50aXRpdHkgTUZOIG1hcCcNCj4gPiAtIHdo ZXJlIHRoZSBJT01NVSBjb2RlIGluIFhlbiAqaW5pdGlhbGx5IHByb2dyYW1tZXMqIHRoZSBJT01N VSB3aXRoDQo+ID4gYW4gaWRlbnRpdHkgTUZOIG1hcCBmb3IgdGhlIHdob2xlIGhvc3QsIGxldCdz IGNhbGwgdGhpcyBhICdob3N0IG1hcCcNCj4gPiAtIHdoZXJlIHRoZSBJT01NVSBjb2RlIGluIFhl biBtYWludGFpbnMgYSBtYXAgc3VjaCB0aGF0IEJGTiA9PSBHRk4sDQo+ID4gbGV0J3MgY2FsbCB0 aGlzIGFuICdpZGVudGl0eSBHRk4gbWFwJw0KPiA+IC0gd2hlcmUgdGhlIElPTU1VIGNvZGUgaW4g WGVuICppbml0aWFsbHkgcHJvZ3JhbW1lcyogdGhlIElPTU1VIHdpdGgNCj4gPiBhbiBpZGVudGl0 eSBHRk4gbWFwIGZvciB0aGUgZ3Vlc3QsIGxldCdzIGNhbGwgdGhpcyBhICdndWVzdCBtYXAnDQo+ IA0KPiBDYW4geW91IGludHJvZHVjZSBhIG5hbWUgZm9yIHN1Y2ggbWFwcGluZz8gdGhlbiB3aGVu IHlvdSBkZXNjcmliZQ0KPiBpZGVudGl0eSBtYXBwaW5nIGluIGZ1dHVyZSB2ZXJzaW9uLCBwZW9w bGUgY2FuIGltbWVkaWF0ZWx5IGdldCB0aGUNCj4gYWN0dWFsIG1lYW5pbmcuIEF0IGxlYXN0IHRv IG1lIEkgYWx3YXlzIHRoaW5rIGFib3V0IHRoZSBtYXBwaW5nIG9uDQo+IGFjdHVhbCBJT01NVSBw YWdlIHRhYmxlIGZpcnN0LCB3aGljaCBpcyBhbHdheXMgYWJvdXQgQkZOLT5NRk4NCj4gbWFwcGlu ZyAod2hlcmUgdGhlIGRlZmluaXRpb24gb2YgQkZOIHZhcmllcyBpbiBkaWZmZXJlbnQgdXNhZ2Vz KS4NCj4gDQoNCk15IHBvaW50IGlzIHRoYXQgdGhlcmUgYXJlIHR3byBub3Rpb25hbCB0eXBlcyBv ZiBpZGVudGl0eSBtYXA6IG9uZSB3aGVyZSBCRk4gPT0gTUZOIGFuZCBvbmUgd2hlcmUgQkZOID09 IEdGTi4gVGhlbiB0aGVyZSBpcyB3aGV0aGVyIFhlbiBtYWludGFpbnMgdGhlIG1hcCwgb3IganVz dCBwcm9ncmFtbWVzIGl0IGF0IGRvbWFpbiBjcmVhdGUgYW5kIHRoZXJlYWZ0ZXIgbGVhdmVzIGl0 IGFsb25lLg0KDQo+ID4NCj4gPiA+IDEpIGZvciBkb20wICh3L28gcHZJT01NVSkgaW4gc3RyaWN0 IG1vZGUsIGl0J3MgTUZOOk1GTiBpZGVudGl0eQ0KPiA+IG1hcHBpbmcNCj4gPg0KPiA+IFdpdGhv dXQgc3RyaWN0IG1vZGUsIGEgaG9zdCBtYXAgaXMgc2V0IHVwIGZvciBkb20wLCBvdGhlcndpc2Ug aXQgaXMgYW4NCj4gPiBpZGVudGl0eSBNRk4gbWFwLiBJbiBib3RoIGNhc2VzIHRoZSB4ZW4tc3dp b3RsYiBkcml2ZXIgaXMgdXNlIGluIExpbnV4IGFzDQo+ID4gdGhlcmUgaXMgbm8gZGlmZmVyZW5j ZSBmcm9tIGl0cyBwb2ludCBvZiB2aWV3Lg0KPiA+DQo+ID4gPiAyKSBmb3IgZG9tMCAody8gcHZJ T01NVSksIGl0J3MgQkZOOk1GTiBtYXBwaW5nDQo+ID4NCj4gPiBXaXRoIFBWLUlPTU1VIHRoZXJl IGlzIGFsc28gYSBob3N0IG1hcCBidXQgc2luY2UgYSBob3N0IG1hcCBpcyBvbmx5DQo+ID4gaW5p dGlhbGl6ZWQgYW5kIG5vdCBtYWludGFpbmVkIChpLmUuIG5vdGhpbmcgaGFwcGVucyB3aGVuIHBh Z2VzIGFyZQ0KPiA+IHJlbW92ZWQgZnJvbSBvciBhZGRlZCB0byBkb20wKSB0aGVuIGl0IGlzIHNh ZmUgZm9yIGRvbTAgdG8gY29udHJvbCB0aGUNCj4gPiBJT01NVSBtYXBwaW5ncyBhcyBpdCB3aWxs IG5vdCBjb25mbGljdCB3aXRoIGFueXRoaW5nIFhlbiBpcyBkb2luZy4NCj4gDQo+IHdoYXQgZG8g eW91IG1lYW4gYnkgbm90IG1haW50YWluZWQ/DQoNCkJ5ICdtYWludGFpbmVkJyBJIG1lYW4gdGhh dCwgd2hlbiB0aGUgUDJNIG9mIHRoZSBndWVzdCBpcyBtb2RpZmllZCwgWGVuIHdpbGwgYWRqdXN0 IHRoZSBJT01NVSBtYXBwaW5ncyBhY2NvcmRpbmdseS4NCg0KPiBob3N0IG1hcCB3aWxsIGJlIHBy b2dyYW1tZWQNCj4gdG8gSU9NTVUgcGFnZSB0YWJsZSBiZWZvcmUgbGF1bmNoaW5nIERvbTAsIHNp bmNlIGh5cGVydmlzb3IgZG9lc24ndA0KPiBrbm93IHdoZXRoZXIgdGhlcmUgd2lsbCBiZSBhIHB2 SU9NTVUgZHJpdmVyIGxhdW5jaGVkLiBMYXRlcg0KPiBwdklPTU1VIGRyaXZlciBpcyBsb2FkZWQg YW5kIGlzc3VlcyBoeXBlcmNhbGwgdG8gY29udHJvbCBpdHMgb3duDQo+IG1hcHBpbmcsIGh5cGVy dmlzb3IgdGhlbiBzd2l0Y2ggSU9NTVUgcGFnZSB0YWJsZSBmcm9tIGhvc3QgbWFwDQo+IHRvIHRo ZSBuZXcgb25lLCB3aGljaCBpcyB0aGUgc2FtZSBsb2dpYyByZWdhcmRpbmcgdG8gdmlydHVhbCBW VGQgZm9yDQo+IEhWTSBndWVzdC4gdGhhdCBpcyBob3cgSSBjYWxsIGFuIGFkZHJlc3Mgc3BhY2Ug c3dpdGNoLg0KDQpCdXQgdGhhdCBpcyBub3Qgd2hhdCBoYXBwZW5zLiBJZiBuZWVkX2lvbW11KCkg aXMgZmFsc2UgdGhlbiBYZW4gd2lsbCBoYXZlIHByb2dyYW1tZWQgYSBtYXBwaW5nIChCRk4gPT0g TUZOIGluIHRoZSBjYXNlIG9mIGRvbTApLCBidXQgd2lsbCBub3QgdG91Y2ggaXQgYWZ0ZXIgdGhh dC4gV2hldGhlciB0aGUgZG9tYWluIChkb20wIGluIHRoaXMgY2FzZSkgY2hvb3NlcyB0byBtb2Rp ZnkgdGhvc2UgbWFwcGluZyBhZnRlciB0aGF0IGlzIHVwIHRvIHRoZSBkb21haW4uLi4uIGJ1dCBp dCBpcyBmcmVlIHRvIGRvIHNvIGJlY2F1c2UgWGVuIHdpbGwgbm90IGR5bmFtaWNhbGx5IGFkanVz dCB0aGUgbWFwcGluZyBzaG91bGQgdGhlIFAyTSBjaGFuZ2UuDQpXaXRoIFBWLUlPTU1VIHRoZXJl IGlzIG5vICdiaWcgc3dpdGNoJzsgWGVuIGRvZXMgbm90aGluZyBtb3JlIHRoYW4gc2V0IHVwIHRo ZSBpbml0aWFsIG1hcHBpbmcgYW5kIHRoZW4gcmVzcG9uZCB0byB0aGUgaW5kaXZpZHVhbCBtYXAv dW5tYXAgaHlwZXJjYWxscyB0aGF0IHRoZSBkb21haW4gbWF5IG9yIG1heSBub3QgaXNzdWUuDQoN Cj4gDQo+ID4NCj4gPiA+IDMpIGZvciBIVk0gKHcvbyB2aXJ0dWFsIFZUZCkgd2l0aCBwYXNzdGhy b3VnaCBkZXZpY2UsIGl0J3MgR0ZOOk1GTg0KPiA+DQo+ID4gSSBoYXZlIG5vdCBiZWVuIGZvbGxv d2luZyB2aXJ0dWFsIFZUZCBjbG9zZWx5IGJ1dCwgeWVzLCBhcyBpdCBzdGFuZHMgKndoZW4NCj4g PiBoL3cgaXMgcGFzc2VkIHRocm91Z2gqIHRoZSBndWVzdCBnZXRzIGFuIGlkZW50aXR5IEdGTiBt YXAgb3RoZXJ3aXNlIGl0DQo+ID4gZ2V0cyBubyBtYXAgYXQgYWxsLg0KPiA+DQo+ID4gPiA0KSBm b3IgSFZNICh3LyB2aXJ0dWFsIFZUZCkgd2l0aCBwYXNzdGhyb3VnaCBkZXZpY2UsIGl0J3MgQkZO Ok1GTg0KPiA+ID4NCj4gPg0KPiA+IFdpdGggdmlydHVhbCBWVGQgSSdkIGV4cGVjdCB0aGVyZSB3 b3VsZCBiZSBhIGd1ZXN0IG1hcCBhbmQgdGhlbiB0aGUgZ3Vlc3QNCj4gPiB3b3VsZCBnZXQgdGhl IHNhbWUgbGV2ZWwgb2YgY29udHJvbCBvdmVyIHRoZSBJT01NVSB0aGF0IFBWLUlPTU1VDQo+ID4g YWxsb3dzIGZvciBhIFBWIGRvbWFpbiBidXQsIG9mIGNvdXJzZSwgc3VjaCBjb250cm9sIGlzIGFz LXlldCB1bnNhZmUgZm9yDQo+ID4gZ3Vlc3RzIHNpbmNlIGFuIElPTU1VIGZhdWx0IGNhbiBjYXVz ZSBhIGhvc3QgY3Jhc2guDQo+IA0KPiBJJ20gbm90IHN1cmUgd2h5IHlvdSBjYWxsIGl0IHVuc2Fm ZS4gZXZlbiB0b2RheSB3aXRoIGFueSBwYXNzdGhyb3VnaA0KPiBkZXZpY2UgKHcvbyB2aXJ0dWFs IFZUZCBleHBvc2VkKSwgYSBiYWQgZ3Vlc3QgZHJpdmVyIGNhbiBhbHdheXMgY2F1c2UNCj4gRE1B IGFjY2VzcyB0byBpbnZhbGlkIEdQQSBhZGRyZXNzIGFuZCB0aHVzIGNhdXNlIElPTU1VIGZhdWx0 LiBhZGRpbmcNCj4gdmlydHVhbCBWVGQgZG9lc24ndCBjaGFuZ2UgYW55IHNlY3VyaXR5IGFzcGVj dCBoZXJlLg0KDQpUaGF0J3Mgbm90IGVudGlyZWx5IHRydWUuIFhlbiBjb3VsZCBlYXNpbHkgZmls bCB0aGUgSU9NTVUgd2l0aCBhIEJGTiA9PSBHRk4gbWFwcGluZyBmb3IgdmFsaWQgR0ZOIGFuZCB0 aGVuIHByb2dyYW0gYWxsIHRoZSBvdGhlciBCRk4gdG8gcG9pbnQgYXQgYSBzY3JhdGNoIHBhZ2Ug YW5kIHRodXMgYXZvaWQgYW55IHBvc3NpYmlsaXR5IG9mIGFuIElPTU1VIGZhdWx0IGNhdXNlZCBi eSBhbiBpbi1ndWVzdCBkcml2ZXIgbWlzLXByb2dyYW1taW5nIGEgZGV2aWNlLiBBcyBzb29uIGFz IFhlbiBnaXZlcyB0aGUgZG9tYWluIGNvbnRyb2wgb3ZlciBpdHMgb3duIG1hcHBpbmdzIHRoZW4g aXQgY2FuIG5vIGxvbmdlciBlbnN1cmUgYWxsIEJGTiBtYXAgdG8gc29tZXRoaW5nIHZhbGlkLg0K DQo+IA0KPiA+DQo+ID4gPiAoZnJvbSBJT01NVSBwLm8udiB3ZSBjYW4gYWx3YXlzIGNhbGwgYWxs IDQgY2F0ZWdvcmllcyBhcyBCRk46TUZOLg0KPiA+ID4gSSBkZWxpYmVyYXRlbHkgc2VwYXJhdGUg dGhlbSBmcm9tIHVzYWdlIHAuby52LCB3aGVyZSAnQkZOJw0KPiA+ID4gcmVwcmVzZW50cyB0aGUg Y2FzZXMgd2hlcmUgZ3Vlc3QgZXhwbGljaXRseSBtYW5hZ2VzIGEgbmV3IGFkZHJlc3MNCj4gPiA+ IHNwYWNlIC0gZGlmZmVyZW50IGZyb20gcGh5c2ljYWwgYWRkcmVzcyBzcGFjZSBpbiBpdHMgbWlu ZCkNCj4gPiA+DQo+ID4gPiB0aGVyZSBpcyBhbiBhZGRyZXNzIHNwYWNlIHN3aXRjaCBpbiAyKSBh bmQgNCkgYmVmb3JlIGFuZCBhZnRlcg0KPiA+ID4gZW5hYmxpbmcgdklPTU1VLg0KPiA+DQo+ID4g SXMgdGhlcmU/IFRoZSBpbml0aWFsIG1hcHBpbmcgaW4gMiBpcyB0aGUgc2FtZSBhcyAxLCBhbmQg dGhlIGluaXRpYWwgbWFwcGluZyBpbg0KPiA+IDQgaXMgdGhlIHNhbWUgYXMgMy4NCj4gPg0KPiA+ ID4NCj4gPiA+IGFib3ZlIGlzIHdoeSBJIGRpZG7igJl0IGZvbGxvdyB0aGUgYXNzdW1wdGlvbiB0 aGF0ICJYZW4gaXMgbWFpbnRhaW5pbmcNCj4gPiA+IGFuIGlkZW50aXR5IG1hcCIgaXMgaWRlbnRp Y2FsIHRvIG5lZWRfaW9tbXUuDQo+ID4gPg0KPiA+DQo+ID4gVGhlIGNydWNpYWwgcG9pbnQgaXMg dGhhdCBpbiBjYXNlcyAyIGFuZCA0IFhlbiBpcyBub3QgKm1haW50YWluaW5nKiBhbnkgbWFwDQo+ ID4gc28gbmVlZF9pb21tdShkKSBzaG91bGQgYmUgZmFsc2UgYW5kIGhlbmNlIHRoZSBkb21haW4g Y2FuIGNvbnRyb2wgaXRzDQo+ID4gb3duIG1hcHBpbmdzIHdpdGhvdXQgaW50ZXJmZXJpbmcgd2hp Y2ggd2hhdCBYZW4gaXMgZG9pbmcgaW50ZXJuYWxseS4NCj4gPg0KPiA+IERvZXMgdGhhdCBoZWxw IGNsYXJpZnk/DQo+ID4NCj4gDQo+IGFnYWluLCBhYm92ZSBkZXNjcmlwdGlvbiBpcyByZWFsbHkg Y29uZnVzaW5nIGFzIHlvdSBkb24ndCBzcGVjaWZ5DQo+IHdoaWNoIG1hcHBpbmcgaXMgcmVmZXJy ZWQgdG8gaGVyZS4NCj4gDQoNClRoYXQncyBiZWNhdXNlIHRoZSBhY3R1YWwgbWFwcGluZyBpcyBp cnJlbGV2YW50IGhlcmUuIERvIHlvdSBub3cgdW5kZXJzdGFuZCB0aGUgZGlmZmVyZW5jZSBiZXR3 ZWVuIFhlbiBzZXR0aW5nIHVwIGFuIGluaXRpYWwgbWFwcGluZyBhbmQgWGVuIG1haW50YWluaW5n IHRoYXQgbWFwcGluZyAoYnkga2VlcGluZyBpdCBzeW5jaHJvbml6ZWQgd2l0aCB0aGUgUDJNKT8g VGhhdCdzIHdoYXQgdGhlIG5lZWRfaW9tbXUoZCkgZmxhZyBpcyBhbGwgYWJvdXQuLi4uIGl0IGhh cyBub3RoaW5nIHRvIGRvIHdpdGggd2hldGhlciB0aGUgbWFwcGluZyBpcyBpZGVudGl0eSBNRk4g b3IgaWRlbnRpdHkgR0ZOLCBvciBzb21ldGhpbmcgZGlmZmVyZW50Lg0KDQogIENoZWVycywNCg0K ICAgIFBhdWwNCg0KPiBUaGFua3MNCj4gS2V2aW4NCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxp c3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcvbWFpbG1hbi9s aXN0aW5mby94ZW4tZGV2ZWw=