From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 35D90A053A; Wed, 5 Aug 2020 14:59:04 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 768AD37B4; Wed, 5 Aug 2020 14:59:03 +0200 (CEST) Received: from huawei.com (szxga02-in.huawei.com [45.249.212.188]) by dpdk.org (Postfix) with ESMTP id A73D02C28; Wed, 5 Aug 2020 14:58:59 +0200 (CEST) Received: from DGGEMM401-HUB.china.huawei.com (unknown [172.30.72.53]) by Forcepoint Email with ESMTP id 77A3191CA68ECAA6A16C; Wed, 5 Aug 2020 20:58:56 +0800 (CST) Received: from DGGEMM533-MBX.china.huawei.com ([169.254.5.24]) by DGGEMM401-HUB.china.huawei.com ([10.3.20.209]) with mapi id 14.03.0487.000; Wed, 5 Aug 2020 20:58:46 +0800 From: wangyunjian To: "Burakov, Anatoly" , "dev@dpdk.org" , "david.marchand@redhat.com" CC: "Lilijun (Jerry)" , xudingke , "stable@dpdk.org" Thread-Topic: [dpdk-dev] [PATCH v2] eal/linux: do not create user mem map repeatedly when it exists Thread-Index: AQHWYQBeKLf/JXFWikCJC/y3HWnXzakWM5gAgAHZYzCAAppcgIAFfUTggAD2OYCACG3DUA== Date: Wed, 5 Aug 2020 12:58:46 +0000 Message-ID: <34EFBCA9F01B0748BEB6B629CE643AE60D110040@DGGEMM533-MBX.china.huawei.com> References: <1595515713-24640-1-git-send-email-wangyunjian@huawei.com> <34EFBCA9F01B0748BEB6B629CE643AE60D0EAAD8@dggemm513-mbx.china.huawei.com> <34EFBCA9F01B0748BEB6B629CE643AE60D0F695F@dggemm513-mbx.china.huawei.com> <21d092c3-83ce-a3f4-2411-193a5f46a111@intel.com> In-Reply-To: <21d092c3-83ce-a3f4-2411-193a5f46a111@intel.com> Accept-Language: en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.174.185.168] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Subject: Re: [dpdk-dev] [PATCH v2] eal/linux: do not create user mem map repeatedly when it exists X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" PiAtLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQ0KPiBGcm9tOiBCdXJha292LCBBbmF0b2x5IFtt YWlsdG86YW5hdG9seS5idXJha292QGludGVsLmNvbV0NCj4gU2VudDogRnJpZGF5LCBKdWx5IDMx LCAyMDIwIDc6NTUgUE0NCj4gVG86IHdhbmd5dW5qaWFuIDx3YW5neXVuamlhbkBodWF3ZWkuY29t PjsgZGV2QGRwZGsub3JnOw0KPiBkYXZpZC5tYXJjaGFuZEByZWRoYXQuY29tDQo+IENjOiBMaWxp anVuIChKZXJyeSkgPGplcnJ5LmxpbGlqdW5AaHVhd2VpLmNvbT47IHh1ZGluZ2tlDQo+IDx4dWRp bmdrZUBodWF3ZWkuY29tPjsgc3RhYmxlQGRwZGsub3JnDQo+IFN1YmplY3Q6IFJlOiBbZHBkay1k ZXZdIFtQQVRDSCB2Ml0gZWFsL2xpbnV4OiBkbyBub3QgY3JlYXRlIHVzZXIgbWVtIG1hcA0KPiBy ZXBlYXRlZGx5IHdoZW4gaXQgZXhpc3RzDQo+IA0KPiBPbiAzMC1KdWwtMjAgMjoxNiBQTSwgd2Fu Z3l1bmppYW4gd3JvdGU6DQo+ID4+IC0tLS0tT3JpZ2luYWwgTWVzc2FnZS0tLS0tDQo+ID4+IEZy b206IEJ1cmFrb3YsIEFuYXRvbHkgW21haWx0bzphbmF0b2x5LmJ1cmFrb3ZAaW50ZWwuY29tXQ0K PiA+PiBTZW50OiBNb25kYXksIEp1bHkgMjcsIDIwMjAgNToyNCBQTQ0KPiA+PiBUbzogd2FuZ3l1 bmppYW4gPHdhbmd5dW5qaWFuQGh1YXdlaS5jb20+OyBkZXZAZHBkay5vcmc7DQo+ID4+IGRhdmlk Lm1hcmNoYW5kQHJlZGhhdC5jb20NCj4gPj4gQ2M6IExpbGlqdW4gKEplcnJ5KSA8amVycnkubGls aWp1bkBodWF3ZWkuY29tPjsgeHVkaW5na2UNCj4gPj4gPHh1ZGluZ2tlQGh1YXdlaS5jb20+OyBz dGFibGVAZHBkay5vcmcNCj4gPj4gU3ViamVjdDogUmU6IFtkcGRrLWRldl0gW1BBVENIIHYyXSBl YWwvbGludXg6IGRvIG5vdCBjcmVhdGUgdXNlciBtZW0gbWFwDQo+ID4+IHJlcGVhdGVkbHkgd2hl biBpdCBleGlzdHMNCj4gPj4NCj4gPj4gT24gMjUtSnVsLTIwIDEwOjU5IEFNLCB3YW5neXVuamlh biB3cm90ZToNCj4gPj4+PiAtLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQ0KPiA+Pj4+IEZyb206 IEJ1cmFrb3YsIEFuYXRvbHkgW21haWx0bzphbmF0b2x5LmJ1cmFrb3ZAaW50ZWwuY29tXQ0KPiA+ Pj4+IFNlbnQ6IEZyaWRheSwgSnVseSAyNCwgMjAyMCA5OjI1IFBNDQo+ID4+Pj4gVG86IHdhbmd5 dW5qaWFuIDx3YW5neXVuamlhbkBodWF3ZWkuY29tPjsgZGV2QGRwZGsub3JnOw0KPiA+Pj4+IGRh dmlkLm1hcmNoYW5kQHJlZGhhdC5jb20NCj4gPj4+PiBDYzogTGlsaWp1biAoSmVycnkpIDxqZXJy eS5saWxpanVuQGh1YXdlaS5jb20+OyB4dWRpbmdrZQ0KPiA+Pj4+IDx4dWRpbmdrZUBodWF3ZWku Y29tPjsgc3RhYmxlQGRwZGsub3JnDQo+ID4+Pj4gU3ViamVjdDogUmU6IFtkcGRrLWRldl0gW1BB VENIIHYyXSBlYWwvbGludXg6IGRvIG5vdCBjcmVhdGUgdXNlciBtZW0NCj4gPj4+PiBtYXAgcmVw ZWF0ZWRseSB3aGVuIGl0IGV4aXN0cw0KPiA+Pj4+DQo+ID4+Pj4gT24gMjMtSnVsLTIwIDM6NDgg UE0sIHdhbmd5dW5qaWFuIHdyb3RlOg0KPiA+Pj4+PiBGcm9tOiBZdW5qaWFuIFdhbmcgPHdhbmd5 dW5qaWFuQGh1YXdlaS5jb20+DQo+ID4+Pj4+DQo+ID4+Pj4+IEN1cnJlbnRseSwgd2Ugd2lsbCBj cmVhdGUgbmV3IHVzZXIgbWVtIG1hcCBlbnRyeSBmb3IgdGhlIHNhbWUgbWVtb3J5DQo+ID4+Pj4+ IHNlZ21lbnQsIGJ1dCBpbiBmYWN0IGl0IGhhcyBhbHJlYWR5IGJlZW4gYWRkZWQgdG8gdGhlIHVz ZXIgbWVtIG1hcHMuDQo+ID4+Pj4+IEl0J3Mgbm90IG5lY2Vzc2FyeSB0byBjcmVhdGUgaXQgdHdp Y2UuDQo+ID4+Pj4+DQo+ID4+Pj4+IFRvIHJlc29sdmUgdGhlIGlzc3VlLCBhZGQgc3VwcG9ydCB0 byByZW1vdmUgdGhlIHNhbWUgZW50cnkgaW4gdGhlDQo+ID4+Pj4+IGZ1bmN0aW9uIGNvbXBhY3Rf dXNlcl9tYXBzKCkuDQo+ID4+Pj4+DQo+ID4+Pj4+IEZpeGVzOiAwY2JjZTNhMTY3ZjEgKCJ2Zmlv OiBza2lwIERNQSBtYXAgZmFpbHVyZSBpZiBhbHJlYWR5IG1hcHBlZCIpDQo+ID4+Pj4+IENjOiBz dGFibGVAZHBkay5vcmcNCj4gPj4+Pj4NCj4gPj4+Pj4gU2lnbmVkLW9mZi1ieTogWXVuamlhbiBX YW5nIDx3YW5neXVuamlhbkBodWF3ZWkuY29tPg0KPiA+Pj4+PiAtLS0NCj4gPj4+Pj4gdjI6DQo+ ID4+Pj4+ICogUmVtb3ZlIHRoZSBzYW1lIGVudHJ5IGluIHRoZSBmdW5jdGlvbiBjb21wYWN0X3Vz ZXJfbWFwcygpDQo+ID4+Pj4+IC0tLQ0KPiA+Pj4+PiAgICAgbGliL2xpYnJ0ZV9lYWwvbGludXgv ZWFsX3ZmaW8uYyB8IDUgKysrKysNCj4gPj4+Pj4gICAgIDEgZmlsZSBjaGFuZ2VkLCA1IGluc2Vy dGlvbnMoKykNCj4gPj4+Pj4NCj4gPj4+Pj4gZGlmZiAtLWdpdCBhL2xpYi9saWJydGVfZWFsL2xp bnV4L2VhbF92ZmlvLmMNCj4gPj4+Pj4gYi9saWIvbGlicnRlX2VhbC9saW51eC9lYWxfdmZpby5j IGluZGV4IGFiYjEyYTM1NC4uZGY5OTMwN2I3IDEwMDY0NA0KPiA+Pj4+PiAtLS0gYS9saWIvbGli cnRlX2VhbC9saW51eC9lYWxfdmZpby5jDQo+ID4+Pj4+ICsrKyBiL2xpYi9saWJydGVfZWFsL2xp bnV4L2VhbF92ZmlvLmMNCj4gPj4+Pj4gQEAgLTE2Nyw2ICsxNjcsMTAgQEAgYWRqdXN0X21hcChz dHJ1Y3QgdXNlcl9tZW1fbWFwICpzcmMsDQo+IHN0cnVjdA0KPiA+Pj4+IHVzZXJfbWVtX21hcCAq ZW5kLA0KPiA+Pj4+PiAgICAgc3RhdGljIGludA0KPiA+Pj4+PiAgICAgbWVyZ2VfbWFwKHN0cnVj dCB1c2VyX21lbV9tYXAgKmxlZnQsIHN0cnVjdCB1c2VyX21lbV9tYXANCj4gPj4gKnJpZ2h0KQ0K PiA+Pj4+PiAgICAgew0KPiA+Pj4+PiArCS8qIG1lcmdlIHRoZSBzYW1lIG1hcHMgaW50byBvbmUg Ki8NCj4gPj4+Pj4gKwlpZiAobWVtY21wKGxlZnQsIHJpZ2h0LCBzaXplb2Yoc3RydWN0IHVzZXJf bWVtX21hcCkpID09IDApDQo+ID4+Pj4+ICsJCWdvdG8gb3V0Ow0KPiA+Pj4+PiArDQo+ID4+Pj4N Cj4gPj4+PiBtZXJnZV9tYXAgbG9va3MgZm9yIGFkamFjZW50IG1hcHMgb25seSwgYnV0IGRvZXMg bm90IGhhbmRsZSBtYXBzIHRoYXQNCj4gPj4+PiBhcmUgd2hvbGx5IGNvbnRhaW5lZCB3aXRoaW4g b25lIGFub3RoZXIgKCJ0aGUgc2FtZSBtYXAiIGFsc28gbWF0Y2hlcw0KPiA+Pj4+IHRoaXMgZGVm aW5pdGlvbikuIHdvdWxkbid0IGl0IGJlIGJldHRlciB0byBjaGVjayBmb3IgdGhhdCBpbnN0ZWFk IG9mDQo+ID4+Pj4gKmp1c3QqIGhhbmRsaW5nIGlkZW50aWNhbCBtYXBzPw0KPiA+Pj4NCj4gPj4+ IFdoYXQgYWJvdXQgdXNpbmcgdGhlIGluaXRpYWwgaW1wbGVtZW50YXRpb24/DQo+ID4+PiBXZSBk b24ndCBjcmVhdGUgbmV3IHVzZXIgbWVtIG1hcCBlbnRyeSBmb3IgdGhlIHNhbWUgbWVtb3J5IHNl Z21lbnQuDQo+ID4+DQo+ID4+IEkgZG9uJ3QgbGlrZSB0aGlzIGltcGxlbWVudGF0aW9uIGJlY2F1 c2UgaXQgcmVsaWVzIG9uIHBhcnRpY3VsYXJzIG9mIGhvdyBWRklPDQo+ID4+IG1hcHBpbmcgd29y ayB3aXRob3V0IGV4cGxpY2l0bHkgc3BlY2lmeWluZyB0aGVtLiBJLmUuIGl0J3MgcHJvbmUgdG8g YnJlYWtpbmcNCj4gPj4gd2hlbiBjaGFuZ2luZyBjb2RlLiBUaGF0J3Mgbm90IGV2ZW4gbWVudGlv bmluZyB0aGF0IHdlIGhhdmUgbm8NCj4gZ3VhcmFudGVlcw0KPiA+PiBvbiBrZXJuZWwgYmVoYXZp b3IgaW4gdGhhdCBwYXJ0aWN1bGFyIGNhc2UgYmVpbmcgaWRlbnRpY2FsIG9uIGFsbCBzdXBwb3J0 ZWQNCj4gPj4gcGxhdGZvcm1zLg0KPiA+Pg0KPiA+PiBJIHdvdWxkIGhvbmVzdGx5IHByZWZlciBh biBleHBsaWNpdCBjb21wYWN0aW9uIG92ZXIgaW1wbGljaXQgb25lLg0KPiA+DQo+ID4gV2hhdCBh Ym91dCB0aGlzIGltcGxlbWVudGF0aW9uPw0KPiANCj4gQWdhaW4sIHRoaXMgd29ya3MsIGJ1dCBp IGZlZWwgbGlrZSBzcGVjaWFsaXppbmcgaXQgdG8ganVzdCBtZXJnZSB0aGUNCj4gZXhhY3Qgc2Ft ZSBtYXBzIGlzIG1pc3NpbmcgYW4gb3Bwb3J0dW5pdHkgdG8gcHJvdmlkZSBhIG1vcmUgZ2VuZXJh bA0KPiBzb2x1dGlvbiB0aGF0IG1lcmdlcyBzYW1lICphbmQqIHN1YnNldCBtYXBzLg0KDQpDdXJy ZW50bHksIHRoZSBwcm9ibGVtIHRoYXQgSSBlbmNvdW50ZXIgaXMgdGhhdCBhIGNvbnRhaW5lciBo YXMgbWFueQ0KZGV2aWNlcyBhbmQgdGhlIGFwcGxpY2F0aW9uIHdpbGwgbWFwIHRoZSBzYW1lIG1l bW9yeSBtYW55IHRpbWVzLg0KVGhlIGtlcm5lbCBkcml2ZXIgcmV0dXJucyBFRVhJU1QgYXMgbG9u ZyBhcyB0aGVyZSBhcmUgb3ZlcmxhcHBpbmcgbWVtb3J5DQphcmVhcy4gVGhlcmVmb3JlLCB0aGUg YXBwbGljYXRpb24gbmVlZHMgdG8gZW5zdXJlIHRoYXQgdGhlIG1lbW9yeSBibG9ja3MNCm9mIHRo ZSBETUEgZG8gbm90IG92ZXJsYXAuIE90aGVyd2lzZSwgaXQgd2lsbCBub3Qgd29yayBub3JtYWxs eS4NCg0KQ291bGQgeW91IG9mZmVyIG1lIHNvbWUgaWRlYXMgb3IgYWR2aXNlIHRvIGZpeCBpdO+8 nw0KDQpUaGFua3MsDQpZdW5qaWFuDQo+IA0KPiA+DQo+ID4gZGlmZiAtLWdpdCBhL2xpYi9saWJy dGVfZWFsL2xpbnV4L2VhbF92ZmlvLmMgYi9saWIvbGlicnRlX2VhbC9saW51eC9lYWxfdmZpby5j DQo+ID4gaW5kZXggZTA3OTc5OTM2Li44ZGNiMDRjZDkgMTAwNjQ0DQo+ID4gLS0tIGEvbGliL2xp YnJ0ZV9lYWwvbGludXgvZWFsX3ZmaW8uYw0KPiA+ICsrKyBiL2xpYi9saWJydGVfZWFsL2xpbnV4 L2VhbF92ZmlvLmMNCj4gPiBAQCAtMTc5LDYgKzE3OSwxOSBAQCBtZXJnZV9tYXAoc3RydWN0IHVz ZXJfbWVtX21hcCAqbGVmdCwgc3RydWN0DQo+IHVzZXJfbWVtX21hcCAqcmlnaHQpDQo+ID4gICAJ cmV0dXJuIDE7DQo+ID4gICB9DQo+ID4NCj4gPiArLyogdHJ5IG1lcmdpbmcgdHdvIHNhbWUgbWFw cyBpbnRvIG9uZSwgcmV0dXJuIDEgaWYgc3VjY2VlZGVkICovDQo+ID4gK3N0YXRpYyBpbnQNCj4g PiArbWVyZ2Vfc2FtZV9tYXAoc3RydWN0IHVzZXJfbWVtX21hcCAqbGVmdCwgc3RydWN0IHVzZXJf bWVtX21hcA0KPiAqcmlnaHQpDQo+ID4gK3sNCj4gPiArCWlmIChtZW1jbXAobGVmdCwgcmlnaHQs IHNpemVvZihzdHJ1Y3QgdXNlcl9tZW1fbWFwKSkgIT0gMCkgew0KPiA+ICsJCXJldHVybiAwOw0K PiA+ICsJfQ0KPiA+ICsNCj4gPiArCW1lbXNldChyaWdodCwgMCwgc2l6ZW9mKCpyaWdodCkpOw0K PiA+ICsNCj4gPiArCXJldHVybiAxOw0KPiA+ICt9DQo+ID4gKw0KPiA+ICAgc3RhdGljIHN0cnVj dCB1c2VyX21lbV9tYXAgKg0KPiA+ICAgZmluZF91c2VyX21lbV9tYXAoc3RydWN0IHVzZXJfbWVt X21hcHMgKnVzZXJfbWVtX21hcHMsDQo+IHVpbnQ2NF90IGFkZHIsDQo+ID4gICAJCXVpbnQ2NF90 IGlvdmEsIHVpbnQ2NF90IGxlbikNCj4gPiBAQCAtMjMyLDcgKzI0NSw3IEBAIGNvbXBhY3RfdXNl cl9tYXBzKHN0cnVjdCB1c2VyX21lbV9tYXBzDQo+ICp1c2VyX21lbV9tYXBzKQ0KPiA+ICAgCQlp ZiAoaXNfbnVsbF9tYXAobCkgfHwgaXNfbnVsbF9tYXAocikpDQo+ID4gICAJCQljb250aW51ZTsN Cj4gPg0KPiA+IC0JCWlmIChtZXJnZV9tYXAobCwgcikpDQo+ID4gKwkJaWYgKG1lcmdlX21hcChs LCByKSB8fCBtZXJnZV9zYW1lX21hcChsLCByKSkNCj4gPiAgIAkJCW5fbWVyZ2VkKys7DQo+ID4g ICAJfQ0KPiA+DQo+ID4gVGhhbmtzLA0KPiA+IFl1bmppYW4NCj4gPg0KPiA+Pg0KPiA+Pj4NCj4g Pj4+IEBAIC0xODI4LDYgKzE4MjgsMTMgQEAgIGNvbnRhaW5lcl9kbWFfbWFwKHN0cnVjdCB2Zmlv X2NvbmZpZw0KPiA+PiAqdmZpb19jZmcsIHVpbnQ2NF90IHZhZGRyLCB1aW50NjRfdCBpb3ZhLA0K PiA+Pj4gICAgCQlyZXQgPSAtMTsNCj4gPj4+ICAgIAkJZ290byBvdXQ7DQo+ID4+PiAgICAJfQ0K PiA+Pj4gKw0KPiA+Pj4gKwkvKiB3ZSBkb24ndCBuZWVkIGNyZWF0ZSBuZXcgdXNlciBtZW0gbWFw IGVudHJ5DQo+ID4+PiArCSAqIGZvciB0aGUgc2FtZSBtZW1vcnkgc2VnbWVudC4NCj4gPj4+ICsJ ICovDQo+ID4+PiArCWlmIChlcnJubyA9PSBFQlVTWSB8fCBlcnJubyA9PSBFRVhJU1QpDQo+ID4+ PiArCQlnb3RvIG91dDsNCj4gPj4+ICsNCj4gPj4+ICAgIAkvKiBjcmVhdGUgbmV3IHVzZXIgbWVt IG1hcCBlbnRyeSAqLw0KPiA+Pj4gICAgCW5ld19tYXAgPQ0KPiA+PiAmdXNlcl9tZW1fbWFwcy0+ bWFwc1t1c2VyX21lbV9tYXBzLT5uX21hcHMrK107DQo+ID4+PiAgICAJbmV3X21hcC0+YWRkciA9 IHZhZGRyOw0KPiA+Pj4NCj4gPj4+IFRoYW5rcywNCj4gPj4+IFl1bmppYW4NCj4gPj4+Pg0KPiA+ Pj4+PiAgICAgCWlmIChsZWZ0LT5hZGRyICsgbGVmdC0+bGVuICE9IHJpZ2h0LT5hZGRyKQ0KPiA+ Pj4+PiAgICAgCQlyZXR1cm4gMDsNCj4gPj4+Pj4gICAgIAlpZiAobGVmdC0+aW92YSArIGxlZnQt PmxlbiAhPSByaWdodC0+aW92YSkgQEAgLTE3NCw2ICsxNzgsNyBAQA0KPiA+Pj4+PiBtZXJnZV9t YXAoc3RydWN0IHVzZXJfbWVtX21hcCAqbGVmdCwgc3RydWN0DQo+ID4+Pj4gdXNlcl9tZW1fbWFw ICpyaWdodCkNCj4gPj4+Pj4NCj4gPj4+Pj4gICAgIAlsZWZ0LT5sZW4gKz0gcmlnaHQtPmxlbjsN Cj4gPj4+Pj4NCj4gPj4+Pj4gK291dDoNCj4gPj4+Pj4gICAgIAltZW1zZXQocmlnaHQsIDAsIHNp emVvZigqcmlnaHQpKTsNCj4gPj4+Pj4NCj4gPj4+Pj4gICAgIAlyZXR1cm4gMTsNCj4gPj4+Pj4N Cj4gPj4+Pg0KPiA+Pj4+DQo+ID4+Pj4gLS0NCj4gPj4+PiBUaGFua3MsDQo+ID4+Pj4gQW5hdG9s eQ0KPiA+Pg0KPiA+Pg0KPiA+PiAtLQ0KPiA+PiBUaGFua3MsDQo+ID4+IEFuYXRvbHkNCj4gDQo+ IA0KPiAtLQ0KPiBUaGFua3MsDQo+IEFuYXRvbHkNCg==