From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniele Ceraolo Spurio Subject: Re: [RFC] drm/i915: check that rpm ref is held when writing to ringbuf in stolen mem Date: Wed, 27 Jan 2016 13:13:54 +0000 Message-ID: <56A8C292.1070305@intel.com> References: <1453884940-30334-1-git-send-email-daniele.ceraolospurio@intel.com> <20160127093826.GW8281@nuc-i3427.alporthouse.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" 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 A52626E6E1 for ; Wed, 27 Jan 2016 05:14:04 -0800 (PST) In-Reply-To: <20160127093826.GW8281@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 , intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org CgpPbiAyNy8wMS8xNiAwOTozOCwgQ2hyaXMgV2lsc29uIHdyb3RlOgo+IE9uIFdlZCwgSmFuIDI3 LCAyMDE2IGF0IDA4OjU1OjQwQU0gKzAwMDAsIGRhbmllbGUuY2VyYW9sb3NwdXJpb0BpbnRlbC5j b20gd3JvdGU6Cj4+IEZyb206IERhbmllbGUgQ2VyYW9sbyBTcHVyaW8gPGRhbmllbGUuY2VyYW9s b3NwdXJpb0BpbnRlbC5jb20+Cj4+Cj4+IFdoaWxlIHJ1bm5pbmcgc29tZSB0ZXN0cyBvbiB0aGUg c2NoZWR1bGVyIHBhdGNoZXMgd2l0aCBycG0gZW5hYmxlZCBJCj4+IGNhbWUgYWNyb3NzIGEgY29y cnVwdGlvbiBpbiB0aGUgcmluZ2J1ZmZlciwgd2hpY2ggd2FzIHJvb3QtY2F1c2VkIHRvCj4+IHRo ZSBHUFUgYmVpbmcgc3VzcGVuZGVkIHdoaWxlIGNvbW1hbmRzIHdlcmUgYmVpbmcgZW1pdHRlZCB0 byB0aGUKPj4gcmluZ2J1ZmZlci4gVGhlIGFjY2VzcyB0byBtZW1vcnkgd2FzIGZhaWxpbmcgYmVj YXVzZSB0aGUgR1BVIG5lZWRzIHRvCj4+IGJlIGF3YWtlIHdoZW4gYWNjZXNzaW5nIHN0b2xlbiBt ZW1vcnkgKHdoZXJlIG15IHJpbmdidWZmZXIgd2FzIGxvY2F0ZWQpLgo+PiBTaW5jZSB3ZSBoYXZl IHRoaXMgY29uc3RyYWludCBpdCBsb29rcyBsaWtlIGEgc2Vuc2libGUgaWRlYSB0byBjaGVjayB0 aGF0Cj4+IHdlIGhvbGQgYSByZWZjb3VudCB3aGVuIHdlIGVtaXQgY29tbWFuZHMuCj4+Cj4+IENj OiBKb2huIEhhcnJpc29uIDxKb2huLkMuSGFycmlzb25ASW50ZWwuY29tPgo+PiBTaWduZWQtb2Zm LWJ5OiBEYW5pZWxlIENlcmFvbG8gU3B1cmlvIDxkYW5pZWxlLmNlcmFvbG9zcHVyaW9AaW50ZWwu Y29tPgo+PiAtLS0KPj4gICBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9scmMuYyB8IDUgKysr KysKPj4gICAxIGZpbGUgY2hhbmdlZCwgNSBpbnNlcnRpb25zKCspCj4+Cj4+IGRpZmYgLS1naXQg YS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9scmMuYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1 L2ludGVsX2xyYy5jCj4+IGluZGV4IDM3NjFlYWYuLmY5ZThkNzQgMTAwNjQ0Cj4+IC0tLSBhL2Ry aXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2xyYy5jCj4+ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS9p OTE1L2ludGVsX2xyYy5jCj4+IEBAIC0xMTA1LDYgKzExMDUsMTEgQEAgaW50IGludGVsX2xvZ2lj YWxfcmluZ19iZWdpbihzdHJ1Y3QgZHJtX2k5MTVfZ2VtX3JlcXVlc3QgKnJlcSwgaW50IG51bV9k d29yZHMpCj4+ICAgCWlmIChyZXQpCj4+ICAgCQlyZXR1cm4gcmV0Owo+PiAgIAo+PiArCS8vIElm IHRoZSByaW5nYnVmZmVyIGlzIGluIHN0b2xlbiBtZW1vcnkgd2UgbmVlZCB0byBiZSBzdXJlIHRo YXQgdGhlCj4+ICsJLy8gZ3B1IGlzIGF3YWtlIGJlZm9yZSB3cml0aW5nIHRvIGl0Cj4+ICsJaWYg KHJlcS0+cmluZ2J1Zi0+b2JqLT5zdG9sZW4gJiYgbnVtX2R3b3JkcyA+IDApCj4+ICsJCWFzc2Vy dF9ycG1fd2FrZWxvY2tfaGVsZChkZXZfcHJpdik7Cj4gVGhlIGFzc2VydGlvbiB5b3Ugd2FudCBp cyB0aGF0IHdoZW4gaW9tYXBwaW5nIHRocm91Z2ggdGhlIEdUVCB0aGF0IHdlCj4gaG9sZCBhIHdh a2VyZWYuCj4gLUNocmlzCgpJZiBJJ20gbm90IG1pc3NpbmcgYW55dGhpbmcsIHdlIGlvbWFwIHRo ZSByaW5nYnVmZmVyIGF0IHJlcXVlc3QgCmFsbG9jYXRpb24gdGltZTsgaG93ZXZlciwgd2l0aCB0 aGUgc2NoZWR1bGVyIGEgcmVxdWVzdCBjb3VsZCBwb3RlbnRpYWxseSAKd2FpdCBpbiB0aGUgcXVl dWUgZm9yIGEgdGltZSBsb25nIGVub3VnaCB0byBhbGxvdyBSUE0gdG8ga2ljayBpbiwgCmVzcGVj aWFsbHkgaWYgdGhlIHJlcXVlc3QgaXMgd2FpdGluZyBvbiBhIGZlbmNlIG9iamVjdCBjb21pbmcg ZnJvbSBhIApkaWZmZXJlbnQgZHJpdmVyLiBJbiB0aGlzIHNpdHVhdGlvbiB0aGUgcnBtIHJlZmVy ZW5jZSB0YWtlbiB0byBjb3ZlciB0aGUgCnJlcXVlc3QgYWxsb2NhdGlvbiB3b3VsZCBoYXZlIGFs cmVhZHkgYmVlbiByZWxlYXNlZCBhbmQgc28gd2UgbmVlZCB0byAKZW5zdXJlIHRoYXQgYSBuZXcg b25lIGhhcyBiZWVuIHRha2VuIGJlZm9yZSB3cml0aW5nIHRvIHRoZSByaW5nYnVmZmVyOyAKdGhh dCdzIHdoeSBJIG9yaWdpbmFsbHkgcGxhY2VkIHRoZSBhc3NlcnQgaW4gcmluZ19iZWdpbi4KU2No ZWR1bGVyIGNvZGUgaXMgc3RpbGwgaW4gcmV2aWV3IGFueXdheSBhbmQgc3ViamVjdGVkIHRvIGNo YW5nZSwgc28gSSAKZ3Vlc3MgdGhhdCB1bnRpbCB0aGF0IHJlYWNoZXMgaXRzIGZpbmFsIGZvcm0g dGhlcmUgaXMgbm8gcG9pbnQgaW4gCmRlYmF0aW5nIHdoZXJlIHRvIHB1dCBhIHBvc3NpYmxlIHNl Y29uZCBhc3NlcnQgOi0pCgpJJ2xsIHJlc3BpbiB0aGUgcGF0Y2ggd2l0aCB0aGUgYXNzZXJ0IGF0 IGlvbWFwIHRpbWUgYXMgeW91IHN1Z2dlc3RlZC4KClRoYW5rcywKRGFuaWVsZQpfX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBs aXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cDovL2xpc3RzLmZyZWVkZXNr dG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2ludGVsLWdmeAo=