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Peter Anvin" , the arch/x86 maintainers , Arnd Bergmann , Josh Poimboeuf , "open list:DOCUMENTATION" , LKML , linux-arch , kasan-dev Subject: RE: [PATCH 3/3] asm-generic, x86: Add bitops instrumentation for KASAN Thread-Topic: [PATCH 3/3] asm-generic, x86: Add bitops instrumentation for KASAN Thread-Index: AQHVFg1T4KMnNqJYZ0KJ/Gnew5X/QaaB8uxw Date: Wed, 29 May 2019 11:20:56 +0000 Message-ID: References: <20190528163258.260144-1-elver@google.com> <20190528163258.260144-3-elver@google.com> <20190528165036.GC28492@lakrids.cambridge.arm.com> <20190529100116.GM2623@hirez.programming.kicks-ass.net> <20190529103010.GP2623@hirez.programming.kicks-ass.net> In-Reply-To: Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 X-MC-Unique: n6S3TAExMKGEa1CSkKSjew-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogRG1pdHJ5IFZ5dWtvdg0KPiBTZW50OiAyOSBNYXkgMjAxOSAxMTo1Nw0KPiBPbiBXZWQs IE1heSAyOSwgMjAxOSBhdCAxMjozMCBQTSBQZXRlciBaaWpsc3RyYSA8cGV0ZXJ6QGluZnJhZGVh ZC5vcmc+IHdyb3RlOg0KPiA+DQo+ID4gT24gV2VkLCBNYXkgMjksIDIwMTkgYXQgMTI6MTY6MzFQ TSArMDIwMCwgTWFyY28gRWx2ZXIgd3JvdGU6DQo+ID4gPiBPbiBXZWQsIDI5IE1heSAyMDE5IGF0 IDEyOjAxLCBQZXRlciBaaWpsc3RyYSA8cGV0ZXJ6QGluZnJhZGVhZC5vcmc+IHdyb3RlOg0KPiA+ ID4gPg0KPiA+ID4gPiBPbiBXZWQsIE1heSAyOSwgMjAxOSBhdCAxMToyMDoxN0FNICswMjAwLCBN YXJjbyBFbHZlciB3cm90ZToNCj4gPiA+ID4gPiBGb3IgdGhlIGRlZmF1bHQsIHdlIGRlY2lkZWQg dG8gZXJyIG9uIHRoZSBjb25zZXJ2YXRpdmUgc2lkZSBmb3Igbm93LA0KPiA+ID4gPiA+IHNpbmNl IGl0IHNlZW1zIHRoYXQgZS5nLiB4ODYgb3BlcmF0ZXMgb25seSBvbiB0aGUgYnl0ZSB0aGUgYml0 IGlzIG9uLg0KPiA+ID4gPg0KPiA+ID4gPiBUaGlzIGlzIG5vdCBjb3JyZWN0LCBzZWUgZm9yIGlu c3RhbmNlIHNldF9iaXQoKToNCj4gPiA+ID4NCj4gPiA+ID4gc3RhdGljIF9fYWx3YXlzX2lubGlu ZSB2b2lkDQo+ID4gPiA+IHNldF9iaXQobG9uZyBuciwgdm9sYXRpbGUgdW5zaWduZWQgbG9uZyAq YWRkcikNCj4gPiA+ID4gew0KPiA+ID4gPiAgICAgICAgIGlmIChJU19JTU1FRElBVEUobnIpKSB7 DQo+ID4gPiA+ICAgICAgICAgICAgICAgICBhc20gdm9sYXRpbGUoTE9DS19QUkVGSVggIm9yYiAl MSwlMCINCj4gPiA+ID4gICAgICAgICAgICAgICAgICAgICAgICAgOiBDT05TVF9NQVNLX0FERFIo bnIsIGFkZHIpDQo+ID4gPiA+ICAgICAgICAgICAgICAgICAgICAgICAgIDogImlxIiAoKHU4KUNP TlNUX01BU0sobnIpKQ0KPiA+ID4gPiAgICAgICAgICAgICAgICAgICAgICAgICA6ICJtZW1vcnki KTsNCj4gPiA+ID4gICAgICAgICB9IGVsc2Ugew0KPiA+ID4gPiAgICAgICAgICAgICAgICAgYXNt IHZvbGF0aWxlKExPQ0tfUFJFRklYIF9fQVNNX1NJWkUoYnRzKSAiICUxLCUwIg0KPiA+ID4gPiAg ICAgICAgICAgICAgICAgICAgICAgICA6IDogUkxPTkdfQUREUihhZGRyKSwgIklyIiAobnIpIDog Im1lbW9yeSIpOw0KPiA+ID4gPiAgICAgICAgIH0NCj4gPiA+ID4gfQ0KPiA+ID4gPg0KPiA+ID4g PiBUaGF0IHJlc3VsdHMgaW46DQo+ID4gPiA+DQo+ID4gPiA+ICAgICAgICAgTE9DSyBCVFNRIG5y LCAoYWRkcikNCj4gPiA+ID4NCj4gPiA+ID4gd2hlbiBAbnIgaXMgbm90IGFuIGltbWVkaWF0ZS4N Cj4gPiA+DQo+ID4gPiBUaGFua3MgZm9yIHRoZSBjbGFyaWZpY2F0aW9uLiBHaXZlbiB0aGF0IGFy bTY0IGFscmVhZHkgaW5zdHJ1bWVudHMNCj4gPiA+IGJpdG9wcyBhY2Nlc3MgdG8gd2hvbGUgd29y ZHMsIGFuZCB4ODYgbWF5IGFsc28gZG8gc28gZm9yIHNvbWUgYml0b3BzLA0KPiA+ID4gaXQgc2Vl bXMgZmluZSB0byBpbnN0cnVtZW50IHdvcmQtc2l6ZWQgYWNjZXNzZXMgYnkgZGVmYXVsdC4gSXMg dGhhdA0KPiA+ID4gcmVhc29uYWJsZT8NCj4gPg0KPiA+IEVtaW5lbnRseSAtLSB0aGUgQVBJIGlz IGRlZmluZWQgc3VjaDsgZm9yIGJvbnVzIHBvaW50cyBLQVNBTiBzaG91bGQgYWxzbw0KPiA+IGRv IGFsaWdubWVudCBjaGVja3Mgb24gYXRvbWljIG9wcy4gRnV0dXJlIGhhcmR3YXJlIHdpbGwgI0FD IG9uIHVuYWxpZ25lZA0KPiA+IFsqXSBMT0NLIHByZWZpeCBpbnN0cnVjdGlvbnMuDQo+ID4NCj4g PiAoKikgbm90IGVudGlyZWx5IGFjY3VyYXRlLCBpdCB3aWxsIG9ubHkgdHJhcCB3aGVuIGNyb3Nz aW5nIGEgbGluZS4NCj4gPiAgICAgaHR0cHM6Ly9sa21sLmtlcm5lbC5vcmcvci8xNTU2MTM0Mzgy LTU4ODE0LTEtZ2l0LXNlbmQtZW1haWwtZmVuZ2h1YS55dUBpbnRlbC5jb20NCj4gDQo+IEludGVy ZXN0aW5nLiBEb2VzIGFuIGFkZHJlc3MgcGFzc2VkIHRvIGJpdG9wcyBhbHNvIHNob3VsZCBiZSBh bGlnbmVkLA0KPiBvciBhbGlnbm1lbnQgaXMgc3VwcG9zZWQgdG8gYmUgaGFuZGxlZCBieSBiaXRv cHMgdGhlbXNlbHZlcz8NCg0KVGhlIGJpdG9wcyBhcmUgZGVmaW5lZCBvbiAnbG9uZyBbXScgYW5k IGl0IGlzIGV4cGVjdGVkIHRvIGJlIGFsaWduZWQuDQpBbnkgY29kZSB0aGF0IGNhc3RzIHRoZSBh cmd1bWVudCBpcyBsaWtlbHkgdG8gYmUgYnJva2VuIG9uIGJpZy1lbmRpYW4uDQpJIGRpZCBhIHF1 aWNrIGdyZXAgYSBmZXcgd2Vla3MgYWdvIGFuZCBmb3VuZCBzb21lIHZlcnkgZHViaW91cyBjb2Rl Lg0KTm90IGFsbCB0aGUgY2FzdHMgc2VlbWVkIHRvIGJlIG9uIGNvZGUgdGhhdCB3YXMgTEUgb25s eSAoYWx0aG91Z2gNCkkgZGlkbid0IHRyeSB0byBmaW5kIG91dCB3aGF0IHRoZSBjYXN0cyB3ZXJl IGZyb20pLg0KDQpUaGUgYWxpZ25tZW50IHRyYXAgb24geDg2IGNvdWxkIGJlIGF2b2lkZWQgYnkg b25seSBldmVyIHJlcXVlc3RpbmcgMzJiaXQNCmN5Y2xlcyAtIGFuZCBhc3N1bWluZyB0aGUgYnVm ZmVyIGlzIGFsd2F5cyAzMmJpdCBhbGlnbmVkIChlZyBpbnQgW10pLg0KQnV0IG9uIEJFIHBhc3Np bmcgYW4gJ2ludCBbXScgaXMganVzdCBzbyB3cm9uZyAuLi4uDQoNCglEYXZpZA0KDQotDQpSZWdp c3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9u IEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=