From: "Zwisler, Ross" Subject: Re: dax pmd fault handler never returns to userspace Date: Wed, 18 Nov 2015 15:56:46 +0000 Message-ID: <1447862206.12885.0.camel@intel.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: "linux-ext4@vger.kernel.org" , "willy@linux.intel.com" , "linux-nvdimm@ml01.01.org" , "linux-fsdevel@vger.kernel.org" To: "jmoyer@redhat.com" Return-path: In-Reply-To: Content-Language: en-US Content-ID: Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org T24gV2VkLCAyMDE1LTExLTE4IGF0IDEwOjUzIC0wNTAwLCBKZWZmIE1veWVyIHdyb3RlOg0KPiBI aSwNCj4gDQo+IFdoZW4gcnVubmluZyB0aGUgbnZtbCBsaWJyYXJ5J3MgdGVzdCBzdWl0ZSBhZ2Fp bnN0IGFuIGV4dDQgZmlsZSBzeXN0ZW0NCj4gbW91bnRlZCB3aXRoIC1vIGRheCwgSSByYW4gaW50 byBhbiBpc3N1ZSB3aGVyZSBtYW55IG9mIHRoZSB0ZXN0cyB3b3VsZA0KPiBzaW1wbHkgdGltZW91 dC4gIFRoZSBwcm9ibGVtIGFwcGVhcnMgdG8gYmUgdGhhdCB0aGUgcG1kIGZhdWx0IGhhbmRsZXIN Cj4gbmV2ZXIgcmV0dXJucyB0byB1c2Vyc3BhY2UgKHRoZSBhcHBsaWNhdGlvbiBpcyBkb2luZyBh IG1lbWNweSBvZiA1MTINCj4gYnl0ZXMgaW50byBwbWVtKS4gIEhlcmUncyB0aGUgJ3BlcmYgcmVw b3J0IC1nJyBvdXRwdXQ6DQo+IA0KPiAtICAgODguMzAlICAgICAwLjAxJSAgYmxrX25vbl96ZXJv LnN0ICBsaWJjLTIuMTcuc28gICAgICAgICAgICAgICAgICBbLl0gX19tZW1tb3ZlX3Nzc2UzX2Jh Y2sNCj4gICAgLSA4OC4zMCUgX19tZW1tb3ZlX3Nzc2UzX2JhY2sNCj4gICAgICAgLSA2Ni42MyUg cGFnZV9mYXVsdA0KPiAgICAgICAgICAtIDY2LjQ3JSBkb19wYWdlX2ZhdWx0DQo+ICAgICAgICAg ICAgIC0gNjYuMTYlIF9fZG9fcGFnZV9mYXVsdA0KPiAgICAgICAgICAgICAgICAtIDYzLjM4JSBo YW5kbGVfbW1fZmF1bHQNCj4gICAgICAgICAgICAgICAgICAgLSA2MS4xNSUgZXh0NF9kYXhfcG1k X2ZhdWx0DQo+ICAgICAgICAgICAgICAgICAgICAgIC0gNDUuMDQlIF9fZGF4X3BtZF9mYXVsdA0K PiAgICAgICAgICAgICAgICAgICAgICAgICAtIDM3LjA1JSB2bWZfaW5zZXJ0X3Bmbl9wbWQNCj4g ICAgICAgICAgICAgICAgICAgICAgICAgICAgLSB0cmFja19wZm5faW5zZXJ0DQo+ICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgIC0gMzUuNTglIGxvb2t1cF9tZW10eXBlDQo+ICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgIC0gMzMuODAlIHBhdF9wYWdlcmFuZ2VfaXNfcmFtDQo+ ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIC0gMzMuNDAlIHdhbGtfc3lzdGVt X3JhbV9yYW5nZQ0KPiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAtIDMx LjYzJSBmaW5kX25leHRfaW9tZW1fcmVzDQo+ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgMjEuNzglIHN0cmNtcA0KPiANCj4gQW5kIGhlcmUncyAncGVyZiB0b3An Og0KPiANCj4gU2FtcGxlczogMk0gb2YgZXZlbnQgJ2N5Y2xlczpwcCcsIEV2ZW50IGNvdW50IChh cHByb3guKTogNTYwODAxNTA1MTkNCj4gT3ZlcmhlYWQgIFNoYXJlZCBPYmplY3QgICAgICAgICAg ICBTeW1ib2wNCj4gICAyMi41NSUgIFtrZXJuZWxdICAgICAgICAgICAgICAgICBba10gc3RyY21w DQo+ICAgMjAuMzMlICBbdW5rbm93bl0gICAgICAgICAgICAgICAgW2tdIDB4MDAwMDdmOWY1NDll ZjNmMw0KPiAgIDEwLjAxJSAgW2tlcm5lbF0gICAgICAgICAgICAgICAgIFtrXSBuYXRpdmVfaXJx X3JldHVybl9pcmV0DQo+ICAgIDkuNTQlICBba2VybmVsXSAgICAgICAgICAgICAgICAgW2tdIGZp bmRfbmV4dF9pb21lbV9yZXMNCj4gICAgMy4wMCUgIFtqYmQyXSAgICAgICAgICAgICAgICAgICBb a10gc3RhcnRfdGhpc19oYW5kbGUNCj4gDQo+IFRoaXMgaXMgZWFzaWx5IHJlcHJvZHVjZWQgYnkg ZG9pbmcgdGhlIGZvbGxvd2luZzoNCj4gDQo+IGdpdCBjbG9uZSBodHRwczovL2dpdGh1Yi5jb20v cG1lbS9udm1sLmdpdA0KPiBjZCBudm1sDQo+IG1ha2UNCj4gbWFrZSB0ZXN0DQo+IGNkIHNyYy90 ZXN0L2Jsa19ub25femVybw0KPiAuL2Jsa19ub25femVyby5zdGF0aWMtbm9uZGVidWcgNTEyIC9w YXRoL3RvL2V4dDQvZGF4L2ZzL3Rlc3RmaWxlMSBjIDEwNzM3NDE4MjQgdzowDQo+IA0KPiBJIGFs c28gcmFuIHRoZSB0ZXN0IHN1aXRlIGFnYWluc3QgeGZzLCBhbmQgdGhlIHByb2JsZW0gaXMgbm90 IHByZXNlbnQNCj4gdGhlcmUuICBIb3dldmVyLCBJIGRpZCBub3QgdmVyaWZ5IHRoYXQgdGhlIHhm cyB0ZXN0cyB3ZXJlIGdldHRpbmcgcG1kDQo+IGZhdWx0cy4NCj4gDQo+IEknbSBoYXBweSB0byBo ZWxwIGRpYWdub3NlIHRoZSBwcm9ibGVtIGZ1cnRoZXIsIGlmIG5lY2Vzc2FyeS4NCg0KVGhhbmtz IGZvciB0aGUgcmVwb3J0LCBJJ2xsIHRha2UgYSBsb29rLg0KDQotIFJvc3MNCg0KDQo=