From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= Subject: Re: [PATCH v3] drm/i915: check that rpm ref is held when accessing ringbuf in stolen mem Date: Thu, 28 Jan 2016 14:09:37 +0200 Message-ID: <20160128120937.GH23290@intel.com> References: <1453909429-11024-1-git-send-email-daniele.ceraolospurio@intel.com> <20160127163916.GF23290@intel.com> <56A9F394.7030205@intel.com> <20160128114524.GE24534@nuc-i3427.alporthouse.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTP id EF00B6E862 for ; Thu, 28 Jan 2016 04:09:40 -0800 (PST) Content-Disposition: inline In-Reply-To: <20160128114524.GE24534@nuc-i3427.alporthouse.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Chris Wilson , Daniele Ceraolo Spurio , intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gVGh1LCBKYW4gMjgsIDIwMTYgYXQgMTE6NDU6MjRBTSArMDAwMCwgQ2hyaXMgV2lsc29uIHdy b3RlOgo+IE9uIFRodSwgSmFuIDI4LCAyMDE2IGF0IDEwOjU1OjE2QU0gKzAwMDAsIERhbmllbGUg Q2VyYW9sbyBTcHVyaW8gd3JvdGU6Cj4gPiAKPiA+IAo+ID4gT24gMjcvMDEvMTYgMTY6MzksIFZp bGxlIFN5cmrDpGzDpCB3cm90ZToKPiA+ID5PbiBXZWQsIEphbiAyNywgMjAxNiBhdCAwMzo0Mzo0 OVBNICswMDAwLGRhbmllbGUuY2VyYW9sb3NwdXJpb0BpbnRlbC5jb20gIHdyb3RlOgo+ID4gPj5G cm9tOiBEYW5pZWxlIENlcmFvbG8gU3B1cmlvPGRhbmllbGUuY2VyYW9sb3NwdXJpb0BpbnRlbC5j b20+Cj4gPiA+Pgo+ID4gPj5XaGlsZSBydW5uaW5nIHNvbWUgdGVzdHMgb24gdGhlIHNjaGVkdWxl ciBwYXRjaGVzIHdpdGggcnBtIGVuYWJsZWQgSQo+ID4gPj5jYW1lIGFjcm9zcyBhIGNvcnJ1cHRp b24gaW4gdGhlIHJpbmdidWZmZXIsIHdoaWNoIHdhcyByb290LWNhdXNlZCB0bwo+ID4gPj50aGUg R1BVIGJlaW5nIHN1c3BlbmRlZCB3aGlsZSBjb21tYW5kcyB3ZXJlIGJlaW5nIGVtaXR0ZWQgdG8g dGhlCj4gPiA+PnJpbmdidWZmZXIuIFRoZSBhY2Nlc3MgdG8gbWVtb3J5IHdhcyBmYWlsaW5nIGJl Y2F1c2UgdGhlIEdQVSBuZWVkcyB0bwo+ID4gPj5iZSBhd2FrZSB3aGVuIGFjY2Vzc2luZyBzdG9s ZW4gbWVtb3J5ICh3aGVyZSBteSByaW5nYnVmZmVyIHdhcyBsb2NhdGVkKS4KPiA+ID4+U2luY2Ug d2UgaGF2ZSB0aGlzIGNvbnN0cmFpbnQgaXQgbG9va3MgbGlrZSBhIHNlbnNpYmxlIGlkZWEgdG8g Y2hlY2sKPiA+ID4+dGhhdCB3ZSBob2xkIGEgcmVmY291bnQgd2hlbiB3ZSBhY2Nlc3MgdGhlIHJ1 bmdidWZmZXIuCj4gPiA+Pgo+ID4gPj52MjogbW92ZSB0aGUgY2hlY2sgZnJvbSByaW5nX2JlZ2lu IHRvIHJpbmdidWZmZXIgaW9tYXAgdGltZSAoQ2hyaXMpCj4gPiA+PnYzOiB1cGRhdGUgY29tbWVu dCAoQ2hyaXMpCj4gPiA+Pgo+ID4gPj5DYzogSm9obiBIYXJyaXNvbjxKb2huLkMuSGFycmlzb25A SW50ZWwuY29tPgo+ID4gPj5DYzogQ2hyaXMgV2lsc29uPGNocmlzQGNocmlzLXdpbHNvbi5jby51 az4KPiA+ID4+U2lnbmVkLW9mZi1ieTogRGFuaWVsZSBDZXJhb2xvIFNwdXJpbzxkYW5pZWxlLmNl cmFvbG9zcHVyaW9AaW50ZWwuY29tPgo+ID4gPj4tLS0KPiA+ID4+ICBkcml2ZXJzL2dwdS9kcm0v aTkxNS9pbnRlbF9yaW5nYnVmZmVyLmMgfCAzICsrKwo+ID4gPj4gIDEgZmlsZSBjaGFuZ2VkLCAz IGluc2VydGlvbnMoKykKPiA+ID4+Cj4gPiA+PmRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0v aTkxNS9pbnRlbF9yaW5nYnVmZmVyLmMgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9yaW5n YnVmZmVyLmMKPiA+ID4+aW5kZXggNmY1YjUxMS4uMTMzMzIxYSAxMDA2NDQKPiA+ID4+LS0tIGEv ZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfcmluZ2J1ZmZlci5jCj4gPiA+PisrKyBiL2RyaXZl cnMvZ3B1L2RybS9pOTE1L2ludGVsX3JpbmdidWZmZXIuYwo+ID4gPj5AQCAtMjExOSw2ICsyMTE5 LDkgQEAgaW50IGludGVsX3Bpbl9hbmRfbWFwX3JpbmdidWZmZXJfb2JqKHN0cnVjdCBkcm1fZGV2 aWNlICpkZXYsCj4gPiA+PiAgCQkJcmV0dXJuIHJldDsKPiA+ID4+ICAJCX0KPiA+ID4+KwkJLyog QWNjZXNzIHRocm91Z2ggdGhlIEdUVCByZXF1aXJlcyB0aGUgZGV2aWNlIHRvIGJlIGF3YWtlLiAq Lwo+ID4gPj4rCQlhc3NlcnRfcnBtX3dha2Vsb2NrX2hlbGQoZGV2X3ByaXYpOwo+ID4gPj4rCj4g PiA+SG1tLiBUaGlzIGZ1bmN0aW9uIGRvZXNuJ3QgYWN0dWFsbHkgYWNjZXMgdGhlIHJpbmcgYnVm ZmVyLCBzbyBpdCdzIGEgYml0Cj4gPiA+b2RkIHRvIHNlZSB0aGlzIGhlcmUuCj4gPiAKPiA+IEkg aGFkIGl0IGlucmluZ19iZWdpbiBpbml0aWFsbHksIGJ1dCBDaHJpcyBzdWdnZXN0ZWQgbW92aW5n IGl0IGhlcmUKPiA+IGJlY2F1c2Ugd2UgcGluIHRoZSByaW5nYnVmZmVyIGJlZm9yZSBhY2Nlc3Np bmcgaXQuIERvIHlvdSBoYXZlIGEKPiA+IGRpZmZlcmVudCBwbGFjZSBpbiBtaW5kIGZvciB3aGVy ZSB0aGlzIHNob3VsZCBiZSBhZGRlZCBvciB3b3VsZCB5b3UKPiA+IGJlIGhhcHB5IHdpdGggYSBz aW1wbGUgY29tbWVudCB1cGRhdGU/Cj4gCj4gVGhpcyBmdW5jdGlvbiB3ZSBjYWxsIGluIG9yZGVy IHRvIGFjcXVpcmUgYWNjZXNzIHRvIHRoZSByaW5nIGlvbWFwIGZvcgo+IHRoZSByZXF1ZXN0LiBB dCB0aGUgYmVnaW5uaW5nIG9mIHRoZSByZXF1ZXN0LCB3ZSBzaG91bGQgYmUgcGlubmluZwo+IGV2 ZXJ5dGhpbmcgd2UgbmVlZCB0byBidWlsZCB0aGUgcmVxdWVzdC4gSWYgd3JpdGluZyB0aHJvdWdo IHRoZSBHVFQgd2UKPiBzaG91bGQgYmUgZW5zdXJpbmcgdGhhdCB0aGUgZGV2aWNlIGlzIGFsc28g YXdha2UuIFRoZSBvZGRpdHkgaXMgdGhhdAo+IHRoaXMgaXMgbm90IHlldCBleHBsaWNpdCBhbmQg dGhlIGFzeW1tZXRyeSBzdGlsbCBleGlzdHMgYmV0d2Vlbgo+IGxlZ2FjeS9leGVjbGlzdHMuCgpZ ZWFoLCB3aXRoIHJpbmdidWZmZXIgbW9kZSB0aGlzIGdldHMgZXhlY3V0ZWQgZXhhY3RseSBvbmNl LCBzbyBtb3JlIG9yCmxlc3MgdXNlbGVzcyBhdCB0aGUgbW9tZW50LiBXaXRoIGV4ZWNsaXN0cyBJ IHN1cHBvc2UgaXQgbWlnaHQgY2F0Y2gKc29tZXRoaW5nIG9uIENIVi9CWFQuCgotLSAKVmlsbGUg U3lyasOkbMOkCkludGVsIE9UQwpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVz a3RvcC5vcmcKaHR0cDovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lu dGVsLWdmeAo=