From mboxrd@z Thu Jan 1 00:00:00 1970 From: Imre Deak Subject: Re: [PATCH] drm/i915: avoid leaking DMA mappings Date: Mon, 06 Jul 2015 18:21:03 +0300 Message-ID: <1436196063.10850.16.camel@intel.com> References: <1436194237-850-1-git-send-email-imre.deak@intel.com> <559A9A8D.3040300@linux.intel.com> Reply-To: imre.deak@intel.com Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTP id 9AED26E726 for ; Mon, 6 Jul 2015 08:21:05 -0700 (PDT) In-Reply-To: <559A9A8D.3040300@linux.intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Tvrtko Ursulin Cc: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gbWEsIDIwMTUtMDctMDYgYXQgMTY6MTEgKzAxMDAsIFR2cnRrbyBVcnN1bGluIHdyb3RlOgo+ IEhpLAo+IAo+IE9uIDA3LzA2LzIwMTUgMDM6NTAgUE0sIEltcmUgRGVhayB3cm90ZToKPiA+IFdl IGhhdmUgMyB0eXBlcyBvZiBETUEgbWFwcGluZ3MgZm9yIEdFTSBvYmplY3RzOgo+ID4gMS4gcGh5 c2ljYWxseSBjb250aWd1b3VzIGZvciBzdG9sZW4gYW5kIGZvciBvYmplY3RzIG5lZWRpbmcgY29u dGlndW91cwo+ID4gICAgIG1lbW9yeQo+ID4gMi4gRE1BLWJ1ZiBtYXBwaW5ncyBpbXBvcnRlZCB2 aWEgYSBETUEtYnVmIGF0dGFjaCBvcGVyYXRpb24KPiA+IDMuIFNHIERNQSBtYXBwaW5ncyBmb3Ig c2htZW0gYmFja2VkIGFuZCB1c2VycHRyIG9iamVjdHMKPiA+Cj4gPiBGb3IgMS4gYW5kIDIuIHRo ZSBsaWZldGltZSBvZiB0aGUgRE1BIG1hcHBpbmcgbWF0Y2hlcyB0aGUgbGlmZXRpbWUgb2YgdGhl Cj4gPiBjb3JyZXNwb25kaW5nIGJhY2tpbmcgcGFnZXMgYW5kIHNvIGluIHByYWN0aWNlIHdlIGNy ZWF0ZS9yZWxlYXNlIHRoZQo+ID4gbWFwcGluZyBpbiB0aGUgb2JqZWN0J3MgZ2V0X3BhZ2VzL3B1 dF9wYWdlcyBjYWxsYmFjay4KPiA+Cj4gPiBGb3IgMy4gdGhlIGxpZmV0aW1lIG9mIHRoZSBtYXBw aW5nIG1hdGNoZXMgdGhhdCBvZiBhbnkgZXhpc3RpbmcgR1BVIGJpbmRpbmcKPiA+IG9mIHRoZSBv YmplY3QsIHNvIHdlJ2xsIGNyZWF0ZSB0aGUgbWFwcGluZyB3aGVuIHRoZSBvYmplY3QgaXMgYm91 bmQgdG8KPiA+IHRoZSBmaXJzdCB2bWEgYW5kIHJlbGVhc2UgdGhlIG1hcHBpbmcgd2hlbiB0aGUg b2JqZWN0IGlzIHVuYm91bmQgZnJvbSBpdHMKPiA+IGxhc3Qgdm1hLgo+ID4KPiA+IFNpbmNlIHRo ZSBvYmplY3QgY2FuIGJlIGJvdW5kIHRvIG11bHRpcGxlIHZtYXMsIHdlIGNhbiBlbmQgdXAgY3Jl YXRpbmcgYQo+ID4gbmV3IERNQSBtYXBwaW5nIGluIHRoZSAzLiBjYXNlIGV2ZW4gaWYgdGhlIG9i amVjdCBhbHJlYWR5IGhhZCBvbmUuIFRoaXMKPiA+IGlzIG5vdCBhbGxvd2VkIGJ5IHRoZSBETUEg QVBJIGFuZCBjYW4gbGVhZCB0byBsZWFrZWQgbWFwcGluZyBkYXRhIGFuZAo+ID4gSU9NTVUgbWVt b3J5IHNwYWNlIHN0YXJ2YXRpb24gaW4gY2VydGFpbiBjYXNlcy4gRm9yIGV4YW1wbGUgSFcgSU9N TVUKPiA+IGRyaXZlcnMgKGludGVsX2lvbW11KSBhbGxvY2F0ZSBhIG5ldyByYW5nZSBmcm9tIHRo ZWlyIG1lbW9yeSBzcGFjZQo+ID4gd2hlbmV2ZXIgYSBtYXBwaW5nIGlzIGNyZWF0ZWQsIHNpbGVu dGx5IG92ZXJyaWRpbmcgYSBwcmUtZXhpc3RpbmcKPiA+IG1hcHBpbmcuCj4gCj4gSGEuLiBiYWNr IHdoZW4gSSB3YXMgYWRkaW5nIG11bHRpcGxlIEdHVFQgdmlld3MgSSBoYWQgdGhpcyBpbXBsZW1l bnRlZCAKPiBieSBvbmx5IGNhbGxpbmcgaTkxNV9nZW1fZ3R0X3ByZXBhcmVfb2JqZWN0IG9uIGZp cnN0IFZNQSBiZWluZyAKPiBpbnN0YW50aWF0ZWQsIGFuZCB0aGUgc2FtZSBidXQgb3Bwb3NpdGUg Zm9yIGxhc3Qgb25lIGdvaW5nIGF3YXkuIFNvbWVvbmUgCj4gdG9sZCBtZSBpdCBpcyBub3QgbmVl ZGVkIHRob3VnaCBhbmQgdG8gcmlwIGl0IG91dC4gOikgVG8gYmUgZmFpciBJIGhhZCAKPiBubyBj bHVlIHNvIGdvdCBpdCByaWdodCBqdXN0IGJ5IGJlaW5nIGRlZmVuc2l2ZS4KPiAKPiA+IEZpeCB0 aGlzIGJ5IGFkZGluZyBuZXcgY2FsbGJhY2tzIHRvIGNyZWF0ZS9yZWxlYXNlIHRoZSBETUEgbWFw cGluZy4gVGhpcwo+ID4gd2F5IHdlIGNhbiB1c2UgdGhlIGhhc19kbWFfbWFwcGluZyBmbGFnIGZv ciBvYmplY3RzIG9mIHRoZSAzLiBjYXNlIGFsc28KPiA+IChzbyBmYXIgdGhlIGZsYWcgd2FzIG9u bHkgdXNlZCBmb3IgdGhlIDEuIGFuZCAyLiBjYXNlKSBhbmQgc2tpcCBjcmVhdGluZwo+ID4gYSBu ZXcgbWFwcGluZyBpZiBvbmUgZXhpc3RzIGFscmVhZHkuCj4gPgo+ID4gTm90ZSB0aGF0IEkgYWxz byB0aG91Z2h0IGFib3V0IHNpbXBseSBjcmVhdGluZy9yZWxlYXNpbmcgdGhlIG1hcHBpbmcKPiA+ IHdoZW4gZ2V0X3BhZ2VzL3B1dF9wYWdlcyBpcyBjYWxsZWQuIEhvd2V2ZXIgc2luY2UgY3JlYXRp bmcgYSBETUEgbWFwcGluZwo+ID4gbWF5IGhhdmUgYXNzb2NpYXRlZCByZXNvdXJjZXMgKGF0IGxl YXN0IGluIGNhc2Ugb2YgSFcgSU9NTVUpIGl0IGRvZXMKPiA+IG1ha2Ugc2Vuc2UgdG8gcmVsZWFz ZSB0aGVzZSByZXNvdXJjZXMgYXMgZWFybHkgYXMgcG9zc2libGUuIFdlIGNhbgo+ID4gcmVsZWFz ZSB0aGUgRE1BIG1hcHBpbmcgYXMgc29vbiBhcyB0aGUgb2JqZWN0IGlzIHVuYm91bmQgZnJvbSB0 aGUgbGFzdAo+ID4gdm1hLCBiZWZvcmUgd2UgZHJvcCB0aGUgYmFja2luZyBwYWdlcywgaGVuY2Ug aXQncyB3b3J0aCBrZWVwaW5nIHRoZSB0d28KPiA+IG9wZXJhdGlvbnMgc2VwYXJhdGUuCj4gPgo+ ID4gSSBub3RpY2VkIHRoaXMgaXNzdWUgYnkgZW5hYmxpbmcgRE1BIGRlYnVnZ2luZywgd2hpY2gg Z290IGRpc2FibGVkIGFmdGVyCj4gPiBhIHdoaWxlIGR1ZSB0byBpdHMgaW50ZXJuYWwgbWFwcGlu ZyB0YWJsZXMgZ2V0dGluZyBmdWxsLiBJdCBhbHNvIHJlcG9ydGVkCj4gPiBlcnJvcnMgaW4gY29u bmVjdGlvbiB0byByYW5kb20gb3RoZXIgZHJpdmVycyB0aGF0IGRpZCBhIERNQSBtYXBwaW5nIGZv cgo+ID4gYW4gYWRkcmVzcyB0aGF0IHdhcyBwcmV2aW91c2x5IG1hcHBlZCBieSBpOTE1IGJ1dCB3 YXMgbmV2ZXIgcmVsZWFzZWQuCj4gPiBCZXNpZGVzIHRoZXNlIGRpYWdub3N0aWMgbWVzc2FnZXMg YW5kIHRoZSBtZW1vcnkgc3BhY2Ugc3RhcnZhdGlvbgo+ID4gcHJvYmxlbSBmb3IgSU9NTVVzLCBJ J20gbm90IGF3YXJlIG9mIHRoaXMgY2F1c2luZyBhIHJlYWwgaXNzdWUuCj4gCj4gT3V0IG9mIGlu dGVyZXN0IGhvdyB0byBlbmFibGUgRE1BIGRlYnVnZ2luZz8KCkJ5IGFkZGluZyBDT05GSUdfRE1B X0FQSV9ERUJVRz15LgoKPiAKPiA+IFNpZ25lZC1vZmYtYnk6IEltcmUgRGVhayA8aW1yZS5kZWFr QGludGVsLmNvbT4KPiA+IC0tLQo+ID4gICBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Rydi5o ICAgICB8ICAyICsrCj4gPiAgIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMgICAgIHwg MjYgKysrKysrKysrKysrKysrKysrKysrKysrKysKPiA+ICAgZHJpdmVycy9ncHUvZHJtL2k5MTUv aTkxNV9nZW1fZ3R0LmMgfCAxNSArKysrLS0tLS0tLS0tLS0KPiA+ICAgMyBmaWxlcyBjaGFuZ2Vk LCAzMiBpbnNlcnRpb25zKCspLCAxMSBkZWxldGlvbnMoLSkKPiAKPiBQYXRjaCBsb29rcyBnb29k IHRvIG1lIGJ1dCBJIGhhdmUgdGhpcyBndXQgZmVlbGluZyBEYW5pZWwgd2lsbCBzYXkgdGhhdCAK PiBmdW5jdGlvbiBwb2ludGVycyBhcmUgYW4gb3ZlcmtpbGwuIFBlcnNvbmFsbHkgSSB0aGluayBp dCBpcyBtb3JlIAo+IHJlYWRhYmxlIHRoYW4gYWRkaW5nIHNwZWNpYWwgY2FzaW5nIHRvIGNvcmUg R0VNIGZ1bmN0aW9ucy4KClllYSwgaW1vIGl0IGRlcGVuZHMgaWYgd2FudCB0byBrZWVwIHRoZSBw dXRfcGFnZXMgYW5kIHJlbGVhc2UgRE1BCm1hcHBpbmcgc2VwYXJhdGUgb3BlcmF0aW9ucy4gSW4g dGhhdCBjYXNlIHdlIGNvdWxkIG1vdmUgdGhlIHJlbGV2YW50CmNvZGUgZm9yIERNQSBidWYgb2Jq ZWN0cyB0b28gaW50byB0aGVzZSBuZXcgY2FsbGJhY2tzLiBCdXQgaWYgdGhhdCdzCmZvdW5kIHRv IGJlIG5vdCB3b3J0aCBpdCB0aGVuIHdlIGNhbiBqdXN0IGNyZWF0ZS9yZWxlYXNlIHRoZSBtYXBw aW5nIGluCnRoZSBnZXRfcGFnZXMvcHV0X3BhZ2VzIGNhbGxiYWNrcyBhbmQgc28gdGhlIG5ldyBv bmVzIGFyZSBub3QgbmVlZGVkLgoKVGhhbmtzIGZvciB5b3VyIHJldmlldywKSW1yZQoKX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxp bmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0cy5mcmVl ZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK