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Thu, 16 Sep 2021 10:37:43 -0400 Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-193-dVD6ImAeMK2-qIm8CP215g-1; Thu, 16 Sep 2021 15:36:19 +0100 X-MC-Unique: dVD6ImAeMK2-qIm8CP215g-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) by AcuMS.aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Thu, 16 Sep 2021 15:36:18 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.023; Thu, 16 Sep 2021 15:36:18 +0100 From: David Laight To: 'Christophe Leroy' , Benjamin Herrenschmidt , Paul Mackerras , "Michael Ellerman" CC: "linux-kernel@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" , Stan Johnson , Finn Thain Subject: RE: [PATCH] powerpc: warn on emulation of dcbz instruction Thread-Topic: [PATCH] powerpc: warn on emulation of dcbz instruction Thread-Index: AQHXqsvW0MbU+d6BYEihwJs0XlFOVqumujNA Date: Thu, 16 Sep 2021 14:36:18 +0000 Message-ID: <2fc6953808854149965e60f340eca94b@AcuMS.aculab.com> References: <62b33ca839f3d1d7d4b64b6f56af0bbe4d2c9057.1631716292.git.christophe.leroy@csgroup.eu> <2c0fd775625c76c4dd09b3e923da4405a003f3bd.camel@kernel.crashing.org> <43f736d4-8625-2848-786f-79b902d5c753@csgroup.eu> In-Reply-To: <43f736d4-8625-2848-786f-79b902d5c753@csgroup.eu> 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogQ2hyaXN0b3BoZSBMZXJveQ0KPiBTZW50OiAxNiBTZXB0ZW1iZXIgMjAyMSAwODoyNA0K PiANCj4gTGUgMTYvMDkvMjAyMSDDoCAwOToxNiwgQmVuamFtaW4gSGVycmVuc2NobWlkdCBhIMOp Y3JpdMKgOg0KPiA+IE9uIFRodSwgMjAyMS0wOS0xNiBhdCAxNzoxNSArMTAwMCwgQmVuamFtaW4g SGVycmVuc2NobWlkdCB3cm90ZToNCj4gPj4gT24gV2VkLCAyMDIxLTA5LTE1IGF0IDE2OjMxICsw MjAwLCBDaHJpc3RvcGhlIExlcm95IHdyb3RlOg0KPiA+Pj4gZGNieiBpbnN0cnVjdGlvbiBzaG91 bGRuJ3QgYmUgdXNlZCBvbiBub24tY2FjaGVkIG1lbW9yeS4gVXNpbmcNCj4gPj4+IGl0IG9uIG5v bi1jYWNoZWQgbWVtb3J5IGNhbiByZXN1bHQgaW4gYWxpZ25tZW50IGV4Y2VwdGlvbiBhbmQNCj4g Pj4+IGltcGxpZXMgYSBoZWF2eSBoYW5kbGluZy4NCj4gPj4+DQo+ID4+PiBJbnN0ZWFkIG9mIHNp bGVudGVseSBlbXVsYXRpbmcgdGhlIGluc3RydWN0aW9uIGFuZCByZXN1bHRpbmcgaW4NCj4gPj4+ IGhpZ2gNCj4gPj4+IHBlcmZvcm1hbmNlIGRlZ3JhZGF0aW9uLCB3YXJuIHdoZW5ldmVyIGFuIGFs aWdubWVudCBleGNlcHRpb24gaXMNCj4gPj4+IHRha2VuIGR1ZSB0byBkY2J6LCBzbyB0aGF0IHRo ZSB1c2VyIGlzIG1hZGUgYXdhcmUgdGhhdCBkY2J6DQo+ID4+PiBpbnN0cnVjdGlvbiBoYXMgYmVl biB1c2VkIHVuZXhwZWN0ZWRseS4NCj4gPj4+DQo+ID4+PiBSZXBvcnRlZC1ieTogU3RhbiBKb2hu c29uIDx1c2VybTU3QHlhaG9vLmNvbT4NCj4gPj4+IENjOiBGaW5uIFRoYWluIDxmdGhhaW5AbGlu dXgtbTY4ay5vcmc+DQo+ID4+PiBTaWduZWQtb2ZmLWJ5OiBDaHJpc3RvcGhlIExlcm95IDxjaHJp c3RvcGhlLmxlcm95QGNzZ3JvdXAuZXU+DQo+ID4+PiAtLS0NCj4gPj4+ICAgYXJjaC9wb3dlcnBj L2tlcm5lbC9hbGlnbi5jIHwgMSArDQo+ID4+PiAgIDEgZmlsZSBjaGFuZ2VkLCAxIGluc2VydGlv bigrKQ0KPiA+Pj4NCj4gPj4+IGRpZmYgLS1naXQgYS9hcmNoL3Bvd2VycGMva2VybmVsL2FsaWdu LmMNCj4gPj4+IGIvYXJjaC9wb3dlcnBjL2tlcm5lbC9hbGlnbi5jDQo+ID4+PiBpbmRleCBiYmI0 MTgxNjIxZGQuLmFkYzNhNGE5YzZlNCAxMDA2NDQNCj4gPj4+IC0tLSBhL2FyY2gvcG93ZXJwYy9r ZXJuZWwvYWxpZ24uYw0KPiA+Pj4gKysrIGIvYXJjaC9wb3dlcnBjL2tlcm5lbC9hbGlnbi5jDQo+ ID4+PiBAQCAtMzQ5LDYgKzM0OSw3IEBAIGludCBmaXhfYWxpZ25tZW50KHN0cnVjdCBwdF9yZWdz ICpyZWdzKQ0KPiA+Pj4gICAJCWlmIChvcC50eXBlICE9IENBQ0hFT1AgKyBEQ0JaKQ0KPiA+Pj4g ICAJCQlyZXR1cm4gLUVJTlZBTDsNCj4gPj4+ICAgCQlQUENfV0FSTl9BTElHTk1FTlQoZGNieiwg cmVncyk7DQo+ID4+PiArCQlXQVJOX09OX09OQ0UoMSk7DQo+ID4+DQo+ID4+IFRoaXMgaXMgaGVh dnkgaGFuZGVkIC4uLiBJdCB3aWxsIGJlIHRyZWF0ZWQgYXMgYW4gb29wcyBieSB2YXJpb3VzDQo+ ID4+IHRoaW5ncyB1c2VsZXNzbHkgc3BpdCBvdXQgYSBrZXJuZWwgYmFja3RyYWNlLiBJc24ndA0K PiA+PiBQUENfV0FSTl9BTElHTk1FTlQNCj4gPj4gZW5vdWdoID8NCj4gDQo+IA0KPiBQUENfV0FS Tl9BTElHTk1FTlQoKSBvbmx5IHdhcm5zIGlmIGV4cGxpY2l0ZWx5IGFjdGl2YXRlZCwgSSB3YW50 IHRvDQo+IGNhdGNoIHVzZXMgb24gJ2RjYnonIG9uIG5vbi1jYWNoZWQgbWVtb3J5IGFsbCB0aGUg dGltZSBhcyB0aGV5IGFyZSBtb3N0DQo+IG9mdGVuIHRoZSByZXN1bHQgb2YgdXNpbmcgbWVtc2V0 KCkgaW5zdGVhZCBvZiBtZW1zZXRfaW8oKS4NCj4gDQo+ID4NCj4gPiBBaCBJIHNhdyB5b3VyIG90 aGVyIG9uZSBhYm91dCBmYmRldi4uLiAgT2sgd2hhdCBhYm91dCB5b3UgZG8gdGhhdCBpbiBhDQo+ ID4gaWYgKCF1c2VyX21vZGUocmVncykpID8NCj4gDQo+IFllcyBJIGNhbiBkbyBXQVJOX09OX09O Q0UoIXVzZXJfbW9kZShyZWdzKSk7IGluc3RlYWQuDQo+IA0KPiA+IEluZGVlZCB0aGUga2VybmVs IHNob3VsZCBub3QgZG8gdGhhdC4NCj4gDQo+IERvZXMgdXNlcnNwYWNlIGFjY2Vzc2VzIG5vbi1j YWNoZWQgbWVtb3J5IGRpcmVjdGx5ID8NCg0KSXQgcHJvYmFibHkgY2FuIGlmIGEgZHJpdmVyIG1t YXBzIFBDSSBzcGFjZSBkaXJlY3RseSBpbnRvIHVzZXIgc3BhY2UuDQpUaGF0IGNlcnRhaW5seSB3 b3JrcyBvbiB4ODYtNjQuDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNp ZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsN ClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=