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Miller" , Jakub Kicinski , "Paolo Abeni" , Olha Cherevyk , iommu , linux-wireless , Netdev , "Linux Kernel Mailing List" , Greg Kroah-Hartman , stable Subject: RE: [REGRESSION] Recent swiotlb DMA_FROM_DEVICE fixes break ath9k-based AP Thread-Topic: [REGRESSION] Recent swiotlb DMA_FROM_DEVICE fixes break ath9k-based AP Thread-Index: AQHYQZpzK/9JYQDqEEKfLChLw6SC36zTVWUA Date: Sun, 27 Mar 2022 15:24:48 +0000 Message-ID: <0745b44456d44d1e9fc364e5a3780d9a@AcuMS.aculab.com> References: <1812355.tdWV9SEqCh@natalenko.name> <20220324055732.GB12078@lst.de> <4386660.LvFx2qVVIh@natalenko.name> <81ffc753-72aa-6327-b87b-3f11915f2549@arm.com> <878rsza0ih.fsf@toke.dk> <4be26f5d8725cdb016c6fdd9d05cfeb69cdd9e09.camel@freebox.fr> <20220324163132.GB26098@lst.de> <871qyr9t4e.fsf@toke.dk> <20220327054848.1a545b12.pasic@linux.ibm.com> In-Reply-To: Accept-Language: en-GB, 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 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 X-Spam-Status: No, score=-3.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H5,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogTGludXMgVG9ydmFsZHMNCj4gU2VudDogMjcgTWFyY2ggMjAyMiAwNjoyMQ0KPiANCj4g T24gU2F0LCBNYXIgMjYsIDIwMjIgYXQgMTA6MDYgUE0gTGludXMgVG9ydmFsZHMNCj4gPHRvcnZh bGRzQGxpbnV4LWZvdW5kYXRpb24ub3JnPiB3cm90ZToNCj4gPg0KPiA+IE9uIFNhdCwgTWFyIDI2 LCAyMDIyIGF0IDg6NDkgUE0gSGFsaWwgUGFzaWMgPHBhc2ljQGxpbnV4LmlibS5jb20+IHdyb3Rl Og0KPiA+ID4NCj4gPiA+IEkgYWdyZWUgaXQgQ1BVIG1vZGlmaWVkIGJ1ZmZlcnMgKmNvbmN1cnJl bnRseSogd2l0aCBETUEgY2FuIG5ldmVyIHdvcmssDQo+ID4gPiBhbmQgSSBiZWxpZXZlIHRoZSBv d25lcnNoaXAgbW9kZWwgd2FzIGNvbmNlaXZlZCB0byBwcmV2ZW50IHRoaXMNCj4gPiA+IHNpdHVh dGlvbi4NCj4gPg0KPiA+IEJ1dCB0aGF0IGp1c3QgbWVhbnMgdGhhdCB0aGUgIm93bmVyc2hpcCIg bW9kZWwgaXMgZ2FyYmFnZSwgYW5kIGNhbm5vdA0KPiA+IGhhbmRsZSB0aGlzIFJFQUwgTElGRSBz aXR1YXRpb24uDQo+IA0KPiBKdXN0IHRvIGNsYXJpZnk6IEkgb2J2aW91c2x5IGFncmVlIHRoYXQg dGhlICJib3RoIHNpZGVzIG1vZGlmeQ0KPiBjb25jdXJyZW50bHkiIG9idmlvdXNseSBjYW5ub3Qg d29yayB3aXRoIGJvdW5jZSBidWZmZXJzLg0KDQpBcmVuJ3QgYm91bmNlIGJ1ZmZlcnMganVzdCBh IG1vcmUgZXh0cmVtZSBjYXNlIG9uIG5vbi1jb2hlcmVudA0KbWVtb3J5IGFjY2Vzc2VzPw0KVGhl eSBqdXN0IG5lZWQgZXhwbGljaXQgbWVtb3J5IGNvcGllcyByYXRoZXIgdGhhbiBqdXN0IGNhY2hl DQp3cml0ZWJhY2sgYW5kIGludmFsaWRhdGUgb3BlcmF0aW9ucy4NCg0KU28gJ2JvdGggc2lkZXMg bW9kaWZ5IGNvbmN1cnJlbnRseScganVzdCBoYXMgdGhlIHNhbWUgaXNzdWUNCmFzIGl0IGRvZXMg d2l0aCBub24tY29oZXJlbnQgbWVtb3J5IGluIHRoYXQgdGhlIGxvY2F0aW9ucw0KbmVlZCB0byBi ZSBpbiBzZXBhcmF0ZSAoZG1hKSBjYWNoZSBsaW5lcy4NCkluZGVlZCwgaWYgdGhlIGJvdW5jZSBi dWZmZXJzIGFyZSBhY3R1YWxseSBjb2hlcmVudCB0aGVuDQphcmJpdHJhcnkgY29uY3VycmVudCB1 cGRhdGVzIGFyZSBwb3NzaWJsZS4NCg0KT25lIGlzc3VlIGlzIHRoYXQgdGhlIGRyaXZlciBuZWVk cyB0byBpbmRpY2F0ZSB3aGljaCBwYXJ0cw0Kb2YgYW55IGJ1ZmZlciBhcmUgZGlydHkuDQpXaGVy ZWFzIHRoZSBhbnkgJ2NhY2hlIHdyaXRlYmFjaycgcmVxdWVzdCB3aWxsIG9ubHkgd3JpdGUNCmRp cnR5IGRhdGEuDQoNCkdldCBldmVyeXRoaW5nIHJpZ2h0IGFuZCB5b3UgY2FuIGV2ZW4gc3VwcG9y dCBoYXJkd2FyZSB3aGVyZQ0KdGhlICdib3VuY2UgYnVmZmVycycgYXJlIGFjdHVhbGx5IG9uIHRo ZSBjYXJkIGFuZCB0aGUgY29waWVzDQphcmUgTU1JTyAob3IgYmV0dGVyLCBlc3BlY2lhbGx5IG9u IFBDSWUsIHN5bmNocm9ub3VzIGhvc3QNCmluaXRpYXRlZCBkbWEgdHJhbnNmZXJzKS4NCg0KCURh dmlkDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVzcyBMYWtlc2lkZSwgQnJhbWxleSBSb2FkLCBNb3Vu dCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEgMVBULCBVSw0KUmVnaXN0cmF0aW9uIE5vOiAxMzk3 Mzg2IChXYWxlcykNCg==