From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Bloomfield, Jon" Subject: Re: [PATCH 3/5] drm/i915: Prevent writing into a read-only object via a GGTT mmap Date: Thu, 14 Jun 2018 15:06:40 +0000 Message-ID: References: <20180614115942.27773-1-chris@chris-wilson.co.uk> <20180614115942.27773-3-chris@chris-wilson.co.uk> <152898841891.18533.14764938251706910098@mail.alporthouse.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by gabe.freedesktop.org (Postfix) with ESMTPS id BF6D26E7A3 for ; Thu, 14 Jun 2018 15:07:01 +0000 (UTC) In-Reply-To: <152898841891.18533.14764938251706910098@mail.alporthouse.com> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Chris Wilson , "intel-gfx@lists.freedesktop.org" List-Id: intel-gfx@lists.freedesktop.org PiAtLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQ0KPiBGcm9tOiBDaHJpcyBXaWxzb24gPGNocmlz QGNocmlzLXdpbHNvbi5jby51az4NCj4gU2VudDogVGh1cnNkYXksIEp1bmUgMTQsIDIwMTggODow MCBBTQ0KPiBUbzogQmxvb21maWVsZCwgSm9uIDxqb24uYmxvb21maWVsZEBpbnRlbC5jb20+OyBp bnRlbC0NCj4gZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZw0KPiBDYzogSm9vbmFzIExhaHRpbmVu IDxqb29uYXMubGFodGluZW5AbGludXguaW50ZWwuY29tPjsgTWF0dGhldyBBdWxkDQo+IDxtYXR0 aGV3LndpbGxpYW0uYXVsZEBnbWFpbC5jb20+DQo+IFN1YmplY3Q6IFJFOiBbUEFUQ0ggMy81XSBk cm0vaTkxNTogUHJldmVudCB3cml0aW5nIGludG8gYSByZWFkLW9ubHkgb2JqZWN0IHZpYQ0KPiBh IEdHVFQgbW1hcA0KPiANCj4gUXVvdGluZyBCbG9vbWZpZWxkLCBKb24gKDIwMTgtMDYtMTQgMTU6 NTM6MTMpDQo+ID4gPiAtLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQ0KPiA+ID4gRnJvbTogQ2hy aXMgV2lsc29uIDxjaHJpc0BjaHJpcy13aWxzb24uY28udWs+DQo+ID4gPiBTZW50OiBUaHVyc2Rh eSwgSnVuZSAxNCwgMjAxOCA1OjAwIEFNDQo+ID4gPiBUbzogaW50ZWwtZ2Z4QGxpc3RzLmZyZWVk ZXNrdG9wLm9yZw0KPiA+ID4gQ2M6IENocmlzIFdpbHNvbiA8Y2hyaXNAY2hyaXMtd2lsc29uLmNv LnVrPjsgQmxvb21maWVsZCwgSm9uDQo+ID4gPiA8am9uLmJsb29tZmllbGRAaW50ZWwuY29tPjsg Sm9vbmFzIExhaHRpbmVuDQo+ID4gPiA8am9vbmFzLmxhaHRpbmVuQGxpbnV4LmludGVsLmNvbT47 IE1hdHRoZXcgQXVsZA0KPiA+ID4gPG1hdHRoZXcud2lsbGlhbS5hdWxkQGdtYWlsLmNvbT4NCj4g PiA+IFN1YmplY3Q6IFtQQVRDSCAzLzVdIGRybS9pOTE1OiBQcmV2ZW50IHdyaXRpbmcgaW50byBh IHJlYWQtb25seSBvYmplY3QgdmlhDQo+IGENCj4gPiA+IEdHVFQgbW1hcA0KPiA+ID4NCj4gPiA+ IElmIHRoZSB1c2VyIGhhcyBjcmVhdGVkIGEgcmVhZC1vbmx5IG9iamVjdCwgdGhleSBzaG91bGQg bm90IGJlIGFsbG93ZWQNCj4gPiA+IHRvIGNpcmN1bXZlbnQgdGhlIHdyaXRlIHByb3RlY3Rpb24g YnkgdXNpbmcgYSBHR1RUIG1tYXBwaW5nLiBEZW55IGl0Lg0KPiA+ID4NCj4gPiA+IEFsc28gbW9z dCBtYWNoaW5lcyBkbyBub3Qgc3VwcG9ydCByZWFkLW9ubHkgR0dUVCBQVEVzLCBzbyBhZ2FpbiB3 ZQ0KPiBoYXZlDQo+ID4gPiB0byByZWplY3QgYXR0ZW1wdGVkIHdyaXRlcy4gRm9ydHVuYXRlbHks IHRoaXMgaXMga25vd24gYSBwcmlvcmksIHNvIHdlDQo+ID4gPiBjYW4gYXQgbGVhc3QgcmVqZWN0 IGluIHRoZSBjYWxsIHRvIGNyZWF0ZSB0aGUgbW1hcCB3aXRoIGJhY2t1cCBpbiB0aGUNCj4gPiA+ IGZhdWx0IGhhbmRsZXIuIFRoaXMgaXMgYSBsaXR0bGUgZHJhY29uaWFuIGFzIHdlIGNvdWxkIGJs YXRhbnRseSBpZ25vcmUNCj4gPiA+IHRoZSB3cml0ZSBwcm90ZWN0aW9uIG9uIHRoZSBwYWdlcywg YnV0IGl0IGlzIGZhciBzaW1wbHkgdG8ga2VlcCB0aGUNCj4gPiA+IHJlYWRvbmx5IG9iamVjdCBw dXJlLiAoSXQgaXMgZWFzaWVyIHRvIGxpZnQgYSByZXN0cmljdGlvbiB0aGFuIHRvIGltcG9zZQ0K PiA+ID4gaXQgbGF0ZXIhKQ0KPiA+IEFyZSB5b3Ugc3VyZSB0aGlzIGlzIG5lY2Vzc2FyeT8gSSBh c3N1bWVkIHlvdSB3b3VsZCBqdXN0IGNyZWF0ZSBhIHJvIElBDQo+ID4gbWFwcGluZyB0byB0aGUg cGFnZSwgaXJyZXNwZWN0aXZlIG9mIHRoZSBhYmlsaXR5IG9mIGdndHQuDQo+IA0KPiBZb3UgYXJl IHRoaW5raW5nIG9mIHRoZSBDUFUgbW1hcD8gVGhlIEdUVCBtbWFwIG9mZmVycyBhIGxpbmVhciB2 aWV3IG9mDQo+IHRoZSB0aWxlZCBvYmplY3QuIEl0IHdvdWxkIGJlIHZlcnkgd3JvbmcgZm9yIHVz IHRvIGJ5cGFzcyB0aGUgUFJPVF9SRUFEDQo+IHByb3RlY3Rpb24gb2YgYSB1c2VyIHBhZ2UgYnkg YWNjZXNzaW5nIGl0IHZpYSB0aGUgR1RULg0KTm8sIEkgd2FzIHRoaW5raW5nIG9mIGd0dCBtbWFw LiBUaGF0IHJlcXVpcmVzIGJvdGggR1RUIGFuZCBJQSBQVEUgbWFwcGluZ3MNCnJpZ2h0PyBPbmUg dG8gbWFwIHRoZSBvYmplY3QgaW50byB0aGUgR1RULCBhbmQgdGhlbiBhIHNlY29uZCB0byBwb2lu dCB0aGUNCklBIGF0IHRoZSBhcGVydHVyZS4gV2h5IHdvdWxkbid0IG1hcmtpbmcgdGhlIElBIG1h cHBpbmcgUk8gcHJvdGVjdCB0aGUNCm9iamVjdCBpZiB0aGUgR1QgY2Fubm90IHJlYWNoIHRoZSBH VFQgbWFwcGluZyAoZnJvbSB1c2VyIGJhdGNoZXMpLg0KDQo+IA0KPiA+IEl0IGZlZWxzIHdyb25n IHRvDQo+ID4gZGlzYWxsb3cgbWFwcGluZyBhIHJlYWQtb25seSBvYmplY3QgdG8gdGhlIENQVSBh cyByZWFkLW9ubHkuIFdpdGggcHBndHQNCj4gPiB0aGUgcHJlc2VuY2Ugb2YgYW4gdW5wcm90ZWN0 ZWQgbWFwcGluZyBpbiB0aGUgZ2d0dCBzaG91bGQgYmUgaW1tdW5lDQo+ID4gZnJvbSB0YW1wZXJp bmcgaW4gdGhlIEdULCBzbyBvbmx5IHRoZSBjcHUgbWFwcGluZyBzaG91bGQgcmVhbGx5IG1hdHRl ci4NCj4gDQo+IEFuZCB0aGUgQ1BVIG1hcHBpbmcgaGFzIGl0cyBwcm90ZWN0aW9uIGJpdHMgb24g dGhlIElBIFBURS4NCj4gLUNocmlzDQpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVl ZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5m by9pbnRlbC1nZngK