From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Tone Zhang (Arm Technology China)" Subject: Re: [PATCH v2] pci_vfio: Support 64KB kernel page_size with vfio-pci driver Date: Fri, 16 Nov 2018 02:34:19 +0000 Message-ID: References: <1540347604-18590-1-git-send-email-tone.zhang@arm.com> <1541743077-27994-1-git-send-email-tone.zhang@arm.com> <68c31d94-3e4d-7b03-209b-1e63c564aa74@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: "Gavin Hu (Arm Technology China)" , Honnappa Nagarahalli , Steve Capper , nd To: "Burakov, Anatoly" , "dev@dpdk.org" Return-path: Received: from EUR02-AM5-obe.outbound.protection.outlook.com (mail-eopbgr00064.outbound.protection.outlook.com [40.107.0.64]) by dpdk.org (Postfix) with ESMTP id 9416D2BD8 for ; Fri, 16 Nov 2018 03:34:20 +0100 (CET) In-Reply-To: Content-Language: en-US List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" SGkgQW5hdG9seSwNCg0KSSBoYXZlIHNvbWUgY29tbWVudHMuDQoNCj4gLS0tLS1PcmlnaW5hbCBN ZXNzYWdlLS0tLS0NCj4gRnJvbTogVG9uZSBaaGFuZyAoQXJtIFRlY2hub2xvZ3kgQ2hpbmEpDQo+ IFNlbnQ6IFRodXJzZGF5LCBOb3ZlbWJlciAxNSwgMjAxOCA4OjQ5IEFNDQo+IFRvOiBCdXJha292 LCBBbmF0b2x5IDxhbmF0b2x5LmJ1cmFrb3ZAaW50ZWwuY29tPjsgZGV2QGRwZGsub3JnDQo+IENj OiBHYXZpbiBIdSAoQXJtIFRlY2hub2xvZ3kgQ2hpbmEpIDxHYXZpbi5IdUBhcm0uY29tPjsgSG9u bmFwcGENCj4gTmFnYXJhaGFsbGkgPEhvbm5hcHBhLk5hZ2FyYWhhbGxpQGFybS5jb20+OyBTdGV2 ZSBDYXBwZXINCj4gPFN0ZXZlLkNhcHBlckBhcm0uY29tPjsgbmQgPG5kQGFybS5jb20+DQo+IFN1 YmplY3Q6IFJFOiBbUEFUQ0ggdjJdIHBjaV92ZmlvOiBTdXBwb3J0IDY0S0Iga2VybmVsIHBhZ2Vf c2l6ZSB3aXRoIHZmaW8tcGNpDQo+IGRyaXZlcg0KPiANCj4gSGkgQW5hdG9seSwNCj4gDQo+IFNv cnJ5IGZvciB0aGUgbGF0ZSByZXNwb25zZS4NCj4gDQo+ID4gLS0tLS1PcmlnaW5hbCBNZXNzYWdl LS0tLS0NCj4gPiBGcm9tOiBCdXJha292LCBBbmF0b2x5IDxhbmF0b2x5LmJ1cmFrb3ZAaW50ZWwu Y29tPg0KPiA+IFNlbnQ6IEZyaWRheSwgTm92ZW1iZXIgOSwgMjAxOCA4OjE1IFBNDQo+ID4gVG86 IFRvbmUgWmhhbmcgKEFybSBUZWNobm9sb2d5IENoaW5hKSA8VG9uZS5aaGFuZ0Bhcm0uY29tPjsN Cj4gPiBkZXZAZHBkay5vcmcNCj4gPiBDYzogR2F2aW4gSHUgKEFybSBUZWNobm9sb2d5IENoaW5h KSA8R2F2aW4uSHVAYXJtLmNvbT47IEhvbm5hcHBhDQo+ID4gTmFnYXJhaGFsbGkgPEhvbm5hcHBh Lk5hZ2FyYWhhbGxpQGFybS5jb20+OyBTdGV2ZSBDYXBwZXINCj4gPiA8U3RldmUuQ2FwcGVyQGFy bS5jb20+OyBuZCA8bmRAYXJtLmNvbT4NCj4gPiBTdWJqZWN0OiBSZTogW1BBVENIIHYyXSBwY2lf dmZpbzogU3VwcG9ydCA2NEtCIGtlcm5lbCBwYWdlX3NpemUgd2l0aA0KPiA+IHZmaW8tcGNpIGRy aXZlcg0KPiA+DQo+ID4gT24gMDktTm92LTE4IDU6NTcgQU0sIHRvbmUuemhhbmcgd3JvdGU6DQo+ ID4gPiBXaXRoIGEgbGFyZ2VyIFBBR0VfU0laRSBpdCBpcyBwb3NzaWJsZSBmb3IgdGhlIE1TSSB0 YWJsZSB0byB2ZXJ5DQo+ID4gPiBjbG9zZSB0byB0aGUgZW5kIG9mIHRoZSBCQVIgcy50LiB3aGVu IHdlIGFsaWduIHRoZSBzdGFydCBhbmQgZW5kIG9mDQo+ID4gPiB0aGUgTVNJIHRhYmxlIHRvIHRo ZSBQQUdFX1NJWkUsIHRoZSBlbmQgb2Zmc2V0IG9mIHRoZSBNU0kgdGFibGUgaXMNCj4gPiA+IG91 dCBvZiB0aGUgUENJIEJBUiBib3VuZGFyeS4NCj4gPiA+DQo+ID4gPiBUaGlzIHBhdGNoIGFkZHJl c3NlcyB0aGUgaXNzdWUgYnkgY29tcGFyaW5nIGJvdGggdGhlIHN0YXJ0IGFuZCB0aGUNCj4gPiA+ IGVuZCBvZmZzZXQgb2YgdGhlIE1TSSB0YWJsZSB3aXRoIHRoZSBCQVIgc2l6ZSwgYW5kIHNraXAg dGhlIG1hcHBpbmcNCj4gPiA+IGlmIGl0IGlzIG91dCBvZiBCYXIgc2NvcGUuDQo+ID4gPg0KPiA+ ID4gVGhlIHBhdGNoIGZpeGVzIHRoZSBkZWJ1ZyBsb2cgYXMgYmVsb3c6DQo+ID4gPiBFQUw6IFNr aXBwaW5nIEJBUjANCj4gPiA+DQo+ID4gPiBTaWduZWQtb2ZmLWJ5OiB0b25lLnpoYW5nIDx0b25l LnpoYW5nQGFybS5jb20+DQo+ID4gPiBSZXZpZXdlZC1ieTogR2F2aW4gSHUgPEdhdmluLkh1QGFy bS5jb20+DQo+ID4gPiBSZXZpZXdlZC1ieTogSG9ubmFwcGEgTmFnYXJhaGFsbGkgPGhvbm5hcHBh Lm5hZ2FyYWhhbGxpQGFybS5jb20+DQo+ID4gPiBSZXZpZXdlZC1ieTogU3RldmUgQ2FwcGVyIDxT dGV2ZS5DYXBwZXJAYXJtLmNvbT4NCj4gPiA+IFJldmlld2VkLWJ5OiBCdXJha292IEFuYXRvbHkg PGFuYXRvbHkuYnVyYWtvdkBpbnRlbC5jb20+DQo+ID4NCj4gPiBJbiB0aGUgZnV0dXJlLCBwbGVh c2UgZG9uJ3QgaW5jbHVkZSBteSBSZXZpZXdlZCB0YWcgdW5sZXNzIGkgYWN0dWFsbHkNCj4gPiBz ZW50IG9uZSA6KQ0KPiANCj4gVGhhbmtzIGEgbG90ISBXaWxsIGtlZXAgaW4gbWluZC4g8J+Yig0K PiANCj4gPg0KPiA+ID4gLS0tDQo+ID4gPiAgIGRyaXZlcnMvYnVzL3BjaS9saW51eC9wY2lfdmZp by5jIHwgMzYNCj4gPiA+ICsrKysrKysrKysrKysrKysrKysrKysrKysrKysrKystLS0NCj4gPiAt LQ0KPiA+ID4gICAxIGZpbGUgY2hhbmdlZCwgMzEgaW5zZXJ0aW9ucygrKSwgNSBkZWxldGlvbnMo LSkNCj4gPiA+DQo+ID4gPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9idXMvcGNpL2xpbnV4L3BjaV92 ZmlvLmMNCj4gPiA+IGIvZHJpdmVycy9idXMvcGNpL2xpbnV4L3BjaV92ZmlvLmMNCj4gPiA+IGlu ZGV4IDMwNWNjMDYuLjlhMGFmZmUgMTAwNjQ0DQo+ID4gPiAtLS0gYS9kcml2ZXJzL2J1cy9wY2kv bGludXgvcGNpX3ZmaW8uYw0KPiA+ID4gKysrIGIvZHJpdmVycy9idXMvcGNpL2xpbnV4L3BjaV92 ZmlvLmMNCj4gPiA+IEBAIC00NDUsOSArNDQ1LDExIEBAIHBjaV92ZmlvX21tYXBfYmFyKGludCB2 ZmlvX2Rldl9mZCwgc3RydWN0DQo+ID4gbWFwcGVkX3BjaV9yZXNvdXJjZSAqdmZpb19yZXMsDQo+ ID4gPiAgIAlzdHJ1Y3QgcGNpX21zaXhfdGFibGUgKm1zaXhfdGFibGUgPSAmdmZpb19yZXMtPm1z aXhfdGFibGU7DQo+ID4gPiAgIAlzdHJ1Y3QgcGNpX21hcCAqYmFyID0gJnZmaW9fcmVzLT5tYXBz W2Jhcl9pbmRleF07DQo+ID4gPg0KPiA+ID4gLQlpZiAoYmFyLT5zaXplID09IDApDQo+ID4gPiAr CWlmIChiYXItPnNpemUgPT0gMCkgew0KPiA+ID4gICAJCS8qIFNraXAgdGhpcyBCQVIgKi8NCj4g PiA+ICsJCVJURV9MT0coSU5GTywgRUFMLCAiU2tpcHBpbmcgQkFSJWRcbiIsIGJhcl9pbmRleCk7 DQo+ID4gPiAgIAkJcmV0dXJuIDA7DQo+ID4gPiArCX0NCj4gPiA+DQo+ID4gPiAgIAlpZiAobXNp eF90YWJsZS0+YmFyX2luZGV4ID09IGJhcl9pbmRleCkgew0KPiA+ID4gICAJCS8qDQo+ID4gPiBA QCAtNDU2LDggKzQ1OCwyMiBAQCBwY2lfdmZpb19tbWFwX2JhcihpbnQgdmZpb19kZXZfZmQsIHN0 cnVjdA0KPiA+IG1hcHBlZF9wY2lfcmVzb3VyY2UgKnZmaW9fcmVzLA0KPiA+ID4gICAJCSAqLw0K PiA+ID4gICAJCXVpbnQzMl90IHRhYmxlX3N0YXJ0ID0gbXNpeF90YWJsZS0+b2Zmc2V0Ow0KPiA+ ID4gICAJCXVpbnQzMl90IHRhYmxlX2VuZCA9IHRhYmxlX3N0YXJ0ICsgbXNpeF90YWJsZS0+c2l6 ZTsNCj4gPiA+IC0JCXRhYmxlX2VuZCA9ICh0YWJsZV9lbmQgKyB+UEFHRV9NQVNLKSAmIFBBR0Vf TUFTSzsNCj4gPiA+IC0JCXRhYmxlX3N0YXJ0ICY9IFBBR0VfTUFTSzsNCj4gPiA+ICsJCXRhYmxl X2VuZCA9IFJURV9BTElHTih0YWJsZV9lbmQsIFBBR0VfU0laRSk7DQo+ID4gPiArCQl0YWJsZV9z dGFydCA9IFJURV9BTElHTih0YWJsZV9zdGFydCwgUEFHRV9TSVpFKTsNCj4gPiA+ICsJCS8qIGFm dGVyIHJvdW5kaW5nIHRvIFBBR0VfU0laRSwgaXQgaXMgb3ZlciB0aGUgYmFyLT5zaXplLA0KPiA+ ID4gKwkJICogZmFsbCBiYWNrIHRvIHRoZSBNU0ktWCB0YWJsZSBvZmZzZXQgaW4gdGhlIGJhciBh bmQNCj4gPiA+ICsJCSAqIGFsaWduIHdpdGggUEFHRV9TSVpFLg0KPiA+ID4gKwkJICovDQo+ID4N Cj4gPiBNaW5vciBuaXRwaWNrIC0gd29yZGluZyBvZiBjb21tZW50IGNvdWxkIGJlIGJldHRlciwg Zm9yIGV4YW1wbGU6DQo+ID4NCj4gPiBpZiBwYWdlLWFsaWduZWQgc3RhcnQgb2YgTVNJLVggdGFi bGUgaXMgYmV5b25kIEJBUiBzaXplLCBzaHJpbmsgdGhlDQo+ID4gbWFwcGluZyBzaXplIHRvIE1T SS1YIHRhYmxlIHN0YXJ0IGFkZHJlc3MuDQo+ID4NCj4gPiBBbHNvLCBwcm9iYWJseSBuZWVkcyBu ZXdsaW5lIGJlZm9yZSBjb21tZW50Lg0KPiA+DQo+IA0KPiBXaWxsIHVwZGF0ZSB0aGUgY29kZSBp biBuZXh0IHZlcnNpb24uIFRoYW5rcyENCj4gDQo+ID4gPiArCQlpZiAodGFibGVfc3RhcnQgPj0g YmFyLT5zaXplKSB7DQo+ID4gPiArCQkJdGFibGVfc3RhcnQgPSBSVEVfQUxJR05fRkxPT1IobXNp eF90YWJsZS0+b2Zmc2V0LA0KPiA+ID4gKwkJCQkJCQlQQUdFX1NJWkUpOw0KPiA+ID4gKwkJCS8q IGFmdGVyIGFsaWduaW5nIHdpdGggUEFHRV9TSVpFLCBpZiBpdCBpcyBsZXNzIHRoYW4NCj4gPiA+ ICsJCQkgKiB0aGUgTVNJLVggdGFibGUgb2Zmc2V0LCBjb250aW51ZSBmYWxsaW5nIGJhY2sgdG8N Cj4gPiA+ICsJCQkgKiB0aGUgYWN0dWFsIE1TSS1YIHRhYmxlIG9mZnNldCBpbiB0aGUgYmFyLg0K PiA+ID4gKwkJCSAqLw0KPiA+DQo+ID4gU2FtZSBoZXJlLCB3b3JkaW5nIGNvdWxkIHByb2JhYmx5 IGJlIGltcHJvdmVkLiBTdWdnZXN0ZWQgcmV3b3JkaW5nOg0KPiA+DQo+ID4gSWYgTVNJLVggdGFi bGUgYWRkcmVzcywgZmxvb3ItYWxpZ25lZCBieSBwYWdlIHNpemUsIGlzIGxvd2VyIHRoYW4NCj4g PiBhY3R1YWwgTVNJLVggdGFibGUgb2Zmc2V0LCBmYWxsIGJhY2sgdG8gdXNpbmcgTVNJLVggdGFi bGUgb2Zmc2V0IGFzIHRhYmxlIHN0YXJ0Lg0KPiA+DQo+ID4gTm93IHRoYXQgaSB0aGluayBvZiBp dCwgdGhpcyBjb3VsZCByZWFsbHkgYmUgZXhwcmVzc2VkIGxpa2UgdGhpczoNCj4gPg0KPiA+IHVp bnQzMl90IGFsaWduZWQgPSBSVEVfQUxJR05fRkxPT1IobXNpeF90YWJsZS0+b2Zmc2V0LCBQQUdF X1NJWkUpOw0KPiA+IHRhYmxlX3N0YXJ0ID0gUlRFX01BWChhbGlnbmVkLCBtc2l4X3RhYmxlX29m ZnNldCk7DQo+ID4NCj4gPiBJIGJlbGlldmUgdGhpcyB3b3VsZCBiZSBtdWNoIGNsZWFyZXIuDQo+ ID4NCj4gDQo+IFdpbGwgdXBkYXRlIHRoZSBwYXRjaC4NCj4gDQoNCldoZW4gZW50ZXIgdGhlIGp1 ZGdlbWVudCwgaXQgaW1wbGllcyB0aGUgIm1zaXhfdGFibGUtPm9mZnNldCIgaXMgTk9UIHBhZ2Ug c2l6ZSBhbGlnbmVkLCBJIHRoaW5rIHdlIGNhbiByZXBsYWNlIHRoZSBjb2RlIGluIHRoZSBqdWRn ZW1lbnQgd2l0aCBvbmUgbGluZTogdGFibGVfc3RhcnQgPSBtc2l4X3RhYmxlLT5vZmZzZXQ7DQpJ dCBsb29rcyBtb3JlIHNpbXBsZS4gV2hhdCdzIHlvdXIgb3Bpbmlvbj8gVGhhbmtzIQ0KDQo+ID4g PiArCQkJaWYgKHRhYmxlX3N0YXJ0IDwgbXNpeF90YWJsZS0+b2Zmc2V0KQ0KPiA+ID4gKwkJCQl0 YWJsZV9zdGFydCA9IG1zaXhfdGFibGUtPm9mZnNldDsNCj4gPiA+ICsJCX0NCj4gPiA+DQo+ID4g PiAgIAkJaWYgKHRhYmxlX3N0YXJ0ID09IDAgJiYgdGFibGVfZW5kID49IGJhci0+c2l6ZSkgew0K PiA+ID4gICAJCQkvKiBDYW5ub3QgbWFwIHRoaXMgQkFSICovDQo+ID4gPiBAQCAtNDY5LDggKzQ4 NSwxOCBAQCBwY2lfdmZpb19tbWFwX2JhcihpbnQgdmZpb19kZXZfZmQsIHN0cnVjdA0KPiA+ID4g bWFwcGVkX3BjaV9yZXNvdXJjZSAqdmZpb19yZXMsDQo+ID4gPg0KPiA+ID4gICAJCW1lbXJlZ1sw XS5vZmZzZXQgPSBiYXItPm9mZnNldDsNCj4gPiA+ICAgCQltZW1yZWdbMF0uc2l6ZSA9IHRhYmxl X3N0YXJ0Ow0KPiA+ID4gLQkJbWVtcmVnWzFdLm9mZnNldCA9IGJhci0+b2Zmc2V0ICsgdGFibGVf ZW5kOw0KPiA+ID4gLQkJbWVtcmVnWzFdLnNpemUgPSBiYXItPnNpemUgLSB0YWJsZV9lbmQ7DQo+ ID4gPiArCQlpZiAoYmFyLT5zaXplIDwgdGFibGVfZW5kKSB7DQo+ID4gPiArCQkJLyoNCj4gPiA+ ICsJCQkgKiBhZnRlciByb3VuZGluZyB0byBQQUdFX1NJWkUgd2UgZG9uJ3QgaGF2ZSBhbnkgc3Bh Y2UNCj4gPiA+ICsJCQkgKiBsZWZ0IGFmdGVyIHRoZSBNU0kgdGFibGUsIHNvIGRvbid0IHRyeSBh bmQgbWFwIGl0Lg0KPiA+ID4gKwkJCSAqLw0KPiA+DQo+ID4gU3VnZ2VzdGVkIHJld29yZGluZzoN Cj4gPg0KPiA+IElmIE1TSS1YIHRhYmxlIGVuZCBpcyBiZXlvbmQgQkFSIGVuZCwgZG9uJ3QgYXR0 ZW1wdCB0byBwZXJmb3JtIHNlY29uZA0KPiBtYXBwaW5nLg0KPiA+DQo+IA0KPiBUaGFua3MgYSBs b3QuIFdpbGwgdXBkYXRlLg0KPiANCj4gPiA+ICsJCQltZW1yZWdbMV0ub2Zmc2V0ID0gMDsNCj4g PiA+ICsJCQltZW1yZWdbMV0uc2l6ZSA9IDA7DQo+ID4gPiArCQl9DQo+ID4gPiArCQllbHNlIHsN Cj4gPiA+ICsJCQltZW1yZWdbMV0ub2Zmc2V0ID0gYmFyLT5vZmZzZXQgKyB0YWJsZV9lbmQ7DQo+ ID4gPiArCQkJbWVtcmVnWzFdLnNpemUgPSBiYXItPnNpemUgLSB0YWJsZV9lbmQ7DQo+ID4gPiAr CQl9DQo+ID4gPg0KPiA+ID4gICAJCVJURV9MT0coREVCVUcsIEVBTCwNCj4gPiA+ICAgCQkJIlRy eWluZyB0byBtYXAgQkFSJWQgdGhhdCBjb250YWlucyB0aGUgTVNJLVggIg0KPiA+ID4NCj4gPg0K PiA+IEhvd2V2ZXIsIHRoZSBwYXRjaCBjYW4gZ28gaW4gYXMgaXMgaWYgbmVlZGVkLCBzbw0KPiA+ DQo+ID4gUmV2aWV3ZWQtYnk6IEFuYXRvbHkgQnVyYWtvdiA8YW5hdG9seS5idXJha292QGludGVs LmNvbT4NCj4gPg0KPiANCj4gVGhhbmtzISDwn5iJDQo+IA0KPiA+IC0tDQo+ID4gVGhhbmtzLA0K PiA+IEFuYXRvbHkNCj4gDQo+IEJyLA0KPiBUb25lDQoNCkJyLA0KVG9uZQ0K