From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Koenig, Christian" Subject: Re: [PATCH hmm 00/15] Consolidate the mmu notifier interval_tree and locking Date: Mon, 21 Oct 2019 14:28:46 +0000 Message-ID: References: <20191015181242.8343-1-jgg@ziepe.ca> <20191016160444.GB3430@mellanox.com> <2df298e2-ee91-ef40-5da9-2bc1af3a17be@gmail.com> <2046e0b4-ba05-0683-5804-e9bbf903658d@amd.com> <20191018203608.GA5670@mellanox.com> <20191021135744.GA25164@mellanox.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20191021135744.GA25164-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org> Content-Language: en-US Content-ID: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "amd-gfx" To: Jason Gunthorpe Cc: Andrea Arcangeli , "Yang, Philip" , Ralph Campbell , "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , John Hubbard , "Kuehling, Felix" , "amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org" , "linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org" , Jerome Glisse , "dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org" , Ben Skeggs List-Id: dri-devel@lists.freedesktop.org QW0gMjEuMTAuMTkgdW0gMTU6NTcgc2NocmllYiBKYXNvbiBHdW50aG9ycGU6DQo+IE9uIFN1biwg T2N0IDIwLCAyMDE5IGF0IDAyOjIxOjQyUE0gKzAwMDAsIEtvZW5pZywgQ2hyaXN0aWFuIHdyb3Rl Og0KPj4gQW0gMTguMTAuMTkgdW0gMjI6MzYgc2NocmllYiBKYXNvbiBHdW50aG9ycGU6DQo+Pj4g T24gVGh1LCBPY3QgMTcsIDIwMTkgYXQgMDQ6NDc6MjBQTSArMDAwMCwgS29lbmlnLCBDaHJpc3Rp YW4gd3JvdGU6DQo+Pj4gW1NOSVBdDQo+Pj4gICAgDQo+Pj4+IFNvIGFnYWluIGhvdyBhcmUgdGhl eSBzZXJpYWxpemVkPw0KPj4+IFRoZSAnZHJpdmVyIGxvY2snIHRoaW5nIGRvZXMgaXQsIHJlYWQg dGhlIGhtbSBkb2N1bWVudGF0aW9uLCB0aGUgaG1tDQo+Pj4gYXBwcm9hY2ggaXMgYmFzaWNhbGx5 IHRoZSBvbmx5IGFwcHJvYWNoIHRoYXQgd2FzIGNvcnJlY3Qgb2YgYWxsIHRoZQ0KPj4+IGRyaXZl cnMuLg0KPj4gV2VsbCB0aGF0J3Mgd2hhdCBJJ3ZlIGRpZCwgYnV0IHdoYXQgSE1NIGRvZXMgc3Rp bGwgZG9lc24ndCBsb29rcyBjb3JyZWN0DQo+PiB0byBtZS4NCj4gSXQgaGFzIGEgYnVnLCBidXQg dGhlIGJhc2ljIGZsb3cgc2VlbXMgdG8gd29yay4NCj4NCj4gaHR0cHM6Ly9wYXRjaHdvcmsua2Vy bmVsLm9yZy9wYXRjaC8xMTE5MQ0KDQpNYXliZSB3cm9uZyBsaW5rPyBUaGF0IGxpbmsgbG9va3Mg bGlrZSBhbiB1bnJlbGF0ZWQgZGlzY3Vzc2lvbiBvbiBrZXJuZWwgDQppbWFnZSByZWxvY2F0aW9u Lg0KDQo+Pj4gU28gbG9uZyBhcyB0aGUgJ2RyaXZlciBsb2NrJyBpcyBoZWxkIHRoZSByYW5nZSBj YW5ub3QgYmVjb21lDQo+Pj4gaW52YWxpZGF0ZWQgYXMgdGhlICdkcml2ZXIgbG9jaycgcHJldmVu dHMgcHJvZ3Jlc3Mgb2YgaW52YWxpZGF0aW9uLg0KPj4gQ29ycmVjdCwgYnV0IHRoZSBwcm9ibGVt IGlzIGl0IGRvZXNuJ3Qgd2FpdCBmb3Igb25nb2luZyBvcGVyYXRpb25zIHRvDQo+PiBjb21wbGV0 ZS4NCj4+DQo+PiBTZWUgSSdtIHRhbGtpbmcgYWJvdXQgdGhlIGZvbGxvd2luZyBjYXNlOg0KPj4N Cj4+IFRocmVhZCBBwqDCoMKgIFRocmVhZCBCDQo+PiBpbnZhbGlkYXRlX3JhbmdlX3N0YXJ0KCkN Cj4+ICAgICAgICAgICAgICAgICAgICAgICBtbXVfcmFuZ2VfcmVhZF9iZWdpbigpDQo+PiAgICAg ICAgICAgICAgICAgICAgICAgZ2V0X3VzZXJfcGFnZXMoKS9obW1fcmFuZ2VfZmF1bHQoKQ0KPj4g ICAgICAgICAgICAgICAgICAgICAgIGdyYWJfZHJpdmVyX2xvY2soKQ0KPj4gVXBkYXRpbmcgdGhl IHB0ZXMNCj4+IGludmFsaWRhdGVfcmFuZ2VfZW5kKCkNCj4+DQo+PiBBcyBmYXIgYXMgSSBjYW4g c2VlIGluIGludmFsaWRhdGVfcmFuZ2Vfc3RhcnQoKSB0aGUgZHJpdmVyIGxvY2sgaXMgdGFrZW4N Cj4+IHRvIG1ha2Ugc3VyZSB0aGF0IHdlIGNhbid0IHN0YXJ0IGFueSBpbnZhbGlkYXRpb24gd2hp bGUgdGhlIGRyaXZlciBpcw0KPj4gdXNpbmcgdGhlIHBhZ2VzIGZvciBhIGNvbW1hbmQgc3VibWlz c2lvbi4NCj4gQWdhaW4sIHRoaXMgdXNlcyB0aGUgc2VxbG9jayBsaWtlIHNjaGVtZSAqYW5kKiB0 aGUgZHJpdmVyIGxvY2suDQo+DQo+IEluIHRoaXMgY2FzZSBhZnRlciBncmFiX2RyaXZlcl9sb2Nr KCkgbW11X3JhbmdlX3JlYWRfcmV0cnkoKSB3aWxsDQo+IHJldHVybiBmYWxzZSBpZiBUaHJlYWQg QSBoYXMgcHJvZ3Jlc3NlZCB0byAndXBkYXRpbmcgdGhlIHB0ZXMuDQo+DQo+IEZvciBpbnN0YW5j ZSBoZXJlIGlzIGhvdyB0aGUgY29uY3VycmVuY3kgcmVzb2x2ZXMgZm9yIHJldHJ5Og0KPg0KPiAg ICAgICAgIENQVTEgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIENQVTINCj4gICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICBzZXEgPSBtbXVfcmFuZ2VfcmVhZF9iZWdpbigp DQo+IGludmFsaWRhdGVfcmFuZ2Vfc3RhcnQoKQ0KPiAgICBpbnZhbGlkYXRlX3NlcSsrDQoNCkhv dyB0aGF0IHdhcyBvcmRlciB3YXMgd2hhdCBjb25mdXNpbmcgbWUuIEJ1dCBJJ3ZlIHJlYWQgdXAg b24gdGhlIGNvZGUgDQppbiBtbXVfcmFuZ2VfcmVhZF9iZWdpbigpIGFuZCBmb3VuZCB0aGUgbGlu ZXMgSSB3YXMgbG9va2luZyBmb3I6DQoNCivCoMKgwqAgaWYgKGlzX2ludmFsaWRhdGluZykNCivC oMKgwqAgwqDCoMKgIHdhaXRfZXZlbnQobW1uX21tLT53cSwNCivCoMKgwqAgwqDCoMKgIMKgwqDC oCDCoMKgIFJFQURfT05DRShtbW5fbW0tPmludmFsaWRhdGVfc2VxKSAhPSBzZXEpOw0KDQpbU05J UF0NCg0KPiBGb3IgdGhlIGFib3ZlIEkndmUgc2ltcGxpZmllZCB0aGUgbWVjaGFuaWNzIG9mIHRo ZSBpbnZhbGlkYXRlX3NlcSwgeW91DQo+IG5lZWQgdG8gbG9vayB0aHJvdWdoIHRoZSBwYXRjaCB0 byBzZWUgaG93IGl0IGFjdHVhbGx5IHdvcmtzLg0KDQpZZWEsIHRoYXQgeW91IGFsc28gYWxsb3cg bXVsdGlwbGUgd3JpdGUgc2lkZXMgaXMgcHJldHR5IG5lYXQuDQoNCj4+IFdlbGwgd2UgZG9uJ3Qg dXBkYXRlIHRoZSBzZXFsb2NrIGFmdGVyIHRoZSB1cGRhdGUgdG8gdGhlIHByb3RlY3RlZCBkYXRh DQo+PiBzdHJ1Y3R1cmUgKHRoZSBwYWdlIHRhYmxlKSBoYXBwZW5lZCwgYnV0IHJhdGhlciBiZWZv cmUgdGhhdC4NCj4gPz8/IFRoaXMgaXMgd2hhdCBtbl9pdHJlZV9pbnZfZW5kKCkgZG9lcywgaXQg aXMgY2FsbGVkIGJ5DQo+IGludmFsaWRhdGVfcmFuZ2VfZW5kDQo+DQo+PiBUaGF0IGRvZXNuJ3Qg bG9va3MgbGlrZSB0aGUgbm9ybWFsIHBhdHRlciBmb3IgYSBzZXFsb2NrIHRvIG1lIGFuZCBhcyBm YXINCj4+IGFzIEkgY2FuIHNlZSB0aGF0IGlzIHF1aXRlIGEgYnVnIGluIHRoZSBITU0gZGVzaWdu L2xvZ2ljLg0KPiBXZWxsLCBobW0gaGFzIGEgYnVnIGJlY2F1c2UgaXQgZG9lc24ndCB1c2UgYSBz ZXFsb2NrIHBhdHRlcm4sIHNlZSB0aGUNCj4gYWJvdmUgVVJMLg0KPg0KPiBPbmUgb2YgdGhlIG1v dGl2YXRpb25zIGZvciB0aGlzIHdvcmsgaXMgdG8gc3F1YXNoIHRoYXQgYnVnIGJ5IGFkZGluZyBh DQo+IHNlcWxvY2sgbGlrZSBwYXR0ZXJuLiBCdXQgdGhlIGJhc2ljIGhtbSBmbG93IGFuZCBjb2xs aXNpb24tcmV0cnkNCj4gYXBwcm9hY2ggc2VlbXMgc291bmQuDQo+DQo+IERvIHlvdSBzZWUgYSBw cm9ibGVtIHdpdGggdGhpcyBwYXRjaD8NCg0KTm8sIG5vdCBhbnkgbW9yZS4NCg0KRXNzZW50aWFs bHkgeW91IGFyZSBkb2luZyB0aGUgc2FtZSB0aGluZyBJJ3ZlIHRyaWVkIHRvIGRvIHdpdGggdGhl IA0Kb3JpZ2luYWwgYW1kZ3B1IGltcGxlbWVudGF0aW9uLiBUaGUgZGlmZmVyZW5jZSBpcyB0aGF0 IHlvdSBkb24ndCB0cnkgdG8gDQp1c2UgYSBwZXIgcmFuZ2Ugc2VxdWVuY2UgKHdoaWNoIGlzIGEg Z29vZCBpZGVhLCB3ZSBuZXZlciBnb3QgdGhhdCBmdWxseSANCndvcmtpbmcpIGFuZCB5b3UgYWxs b3cgbXVsdGlwbGUgd3JpdGVycyBhdCB0aGUgc2FtZSB0aW1lLg0KDQpGZWVsIGZyZWUgdG8gc3Rp dGNoIGFuIEFja2VkLWJ5OiBDaHJpc3RpYW4gS8O2bmlnIA0KPGNocmlzdGlhbi5rb2VuaWdAYW1k LmNvbT4gb24gcGF0Y2ggIzIsIGJ1dCB5b3Ugc3RpbGwgZG9pbmcgYSBidW5jaCBvZiANCnRoaW5n cyBpbiB0aGVyZSB3aGljaCBhcmUgd2F5IGJleW9uZCBteSB1bmRlcnN0YW5kaW5nIChlLmcuIHdo ZXJlIGFyZSANCmFsbCB0aGUgU01QIGJhcnJpZXJzPykuDQoNCkNoZWVycywNCkNocmlzdGlhbi4N Cg0KPg0KPiBKYXNvbg0KDQpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fXwphbWQtZ2Z4IG1haWxpbmcgbGlzdAphbWQtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9y ZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2FtZC1nZng=