From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= Subject: Re: [PATCH] drm/i915 : Avoid superfluous invalidation of CPU cache lines Date: Tue, 24 Nov 2015 12:04:06 +0200 Message-ID: <20151124100406.GD4437@intel.com> References: <1448359524-11814-1-git-send-email-akash.goel@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTP id EE54C6E884 for ; Tue, 24 Nov 2015 02:04:19 -0800 (PST) Content-Disposition: inline In-Reply-To: <1448359524-11814-1-git-send-email-akash.goel@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: akash.goel@intel.com Cc: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gVHVlLCBOb3YgMjQsIDIwMTUgYXQgMDM6MzU6MjRQTSArMDUzMCwgYWthc2guZ29lbEBpbnRl bC5jb20gd3JvdGU6Cj4gRnJvbTogQWthc2ggR29lbCA8YWthc2guZ29lbEBpbnRlbC5jb20+Cj4g Cj4gV2hlbiB0aGUgb2JqZWN0IGlzIG1vdmVkIG91dCBvZiBDUFUgcmVhZCBkb21haW4sIHRoZSBj YWNoZWxpbmVzCj4gYXJlIG5vdCBpbnZhbGlkYXRlZCBpbW1lZGlhdGVseS4gVGhlIGludmFsaWRh dGlvbiBpcyBkZWZlcnJlZCB0aWxsCj4gbmV4dCB0aW1lIHRoZSBvYmplY3QgaXMgYnJvdWdodCBi YWNrIGludG8gQ1BVIHJlYWQgZG9tYWluLgo+IEJ1dCB0aGUgaW52YWxpZGF0aW9uIGlzIGRvbmUg dW5jb25kaXRpb25hbGx5LCBpLmUuIGV2ZW4gZm9yIHRoZSBjYXNlCj4gd2hlcmUgdGhlIGNhY2hl bGluZXMgd2VyZSBmbHVzaGVkIHByZXZpb3VzbHksIHdoZW4gdGhlIG9iamVjdCBtb3ZlZCBvdXQK PiBvZiBDUFUgd3JpdGUgZG9tYWluLiBUaGlzIGlzIGF2b2lkYWJsZSBhbmQgd291bGQgbGVhZCB0 byBzb21lIG9wdGltaXphdGlvbi4KPiBUaG91Z2ggdGhpcyBpcyBub3QgYSBoeXBvdGhldGljYWwg Y2FzZSwgYnV0IGlzIHVubGlrZWx5IHRvIG9jY3VyIG9mdGVuLgo+IFRoZSBhaW0gaXMgdG8gZGV0 ZWN0IGNoYW5nZXMgdG8gdGhlIGJhY2tpbmcgc3RvcmFnZSB3aGlsc3QgdGhlCj4gZGF0YSBpcyBw b3RlbnRpYWxseSBpbiB0aGUgQ1BVIGNhY2hlLCBhbmQgb25seSBjbGZsdXNoIGluIHRob3NlIGNh c2UuCj4gCj4gU2lnbmVkLW9mZi1ieTogQ2hyaXMgV2lsc29uIDxjaHJpc0BjaHJpcy13aWxzb24u Y28udWs+Cj4gU2lnbmVkLW9mZi1ieTogQWthc2ggR29lbCA8YWthc2guZ29lbEBpbnRlbC5jb20+ Cj4gLS0tCj4gIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZHJ2LmggfCAxICsKPiAgZHJpdmVy cy9ncHUvZHJtL2k5MTUvaTkxNV9nZW0uYyB8IDkgKysrKysrKystCj4gIDIgZmlsZXMgY2hhbmdl ZCwgOSBpbnNlcnRpb25zKCspLCAxIGRlbGV0aW9uKC0pCj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZl cnMvZ3B1L2RybS9pOTE1L2k5MTVfZHJ2LmggYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Ry di5oCj4gaW5kZXggZGY5MzE2Zi4uZmVkYjcxZCAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2dwdS9k cm0vaTkxNS9pOTE1X2Rydi5oCj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9kcnYu aAo+IEBAIC0yMDk4LDYgKzIwOTgsNyBAQCBzdHJ1Y3QgZHJtX2k5MTVfZ2VtX29iamVjdCB7Cj4g IAl1bnNpZ25lZCBsb25nIGd0X3JvOjE7Cj4gIAl1bnNpZ25lZCBpbnQgY2FjaGVfbGV2ZWw6MzsK PiAgCXVuc2lnbmVkIGludCBjYWNoZV9kaXJ0eToxOwo+ICsJdW5zaWduZWQgaW50IGNhY2hlX2Ns ZWFuOjE7CgpTbyBub3cgd2UgaGF2ZSBjYWNoZV9kaXJ0eSBhbmQgY2FjaGVfY2xlYW4gd2hpY2gg c2VlbXMgcmVkdW5kYW50LApleGNlcHQgc29tZWhvdyBjYWNoZV9kaXJ0eSAhPSAhY2FjaGVfY2xl YW4/Cgo+ICAKPiAgCXVuc2lnbmVkIGludCBmcm9udGJ1ZmZlcl9iaXRzOklOVEVMX0ZST05UQlVG RkVSX0JJVFM7Cj4gIAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2dl bS5jIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9nZW0uYwo+IGluZGV4IDE5YzI4MmIuLmEx M2ZmZDQgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9nZW0uYwo+ICsr KyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZ2VtLmMKPiBAQCAtMzU1Miw2ICszNTUyLDcg QEAgaTkxNV9nZW1fY2xmbHVzaF9vYmplY3Qoc3RydWN0IGRybV9pOTE1X2dlbV9vYmplY3QgKm9i aiwKPiAgCXRyYWNlX2k5MTVfZ2VtX29iamVjdF9jbGZsdXNoKG9iaik7Cj4gIAlkcm1fY2xmbHVz aF9zZyhvYmotPnBhZ2VzKTsKPiAgCW9iai0+Y2FjaGVfZGlydHkgPSBmYWxzZTsKPiArCW9iai0+ Y2FjaGVfY2xlYW4gPSB0cnVlOwo+ICAKPiAgCXJldHVybiB0cnVlOwo+ICB9Cj4gQEAgLTM5ODIs NyArMzk4MywxMyBAQCBpOTE1X2dlbV9vYmplY3Rfc2V0X3RvX2NwdV9kb21haW4oc3RydWN0IGRy bV9pOTE1X2dlbV9vYmplY3QgKm9iaiwgYm9vbCB3cml0ZSkKPiAgCj4gIAkvKiBGbHVzaCB0aGUg Q1BVIGNhY2hlIGlmIGl0J3Mgc3RpbGwgaW52YWxpZC4gKi8KPiAgCWlmICgob2JqLT5iYXNlLnJl YWRfZG9tYWlucyAmIEk5MTVfR0VNX0RPTUFJTl9DUFUpID09IDApIHsKPiAtCQlpOTE1X2dlbV9j bGZsdXNoX29iamVjdChvYmosIGZhbHNlKTsKPiArCQkvKiBJbnZhbGlkYXRpb24gbm90IG5lZWRl ZCBhcyB0aGVyZSBzaG91bGQgbm90IGJlIGFueSBkYXRhIGluCj4gKwkJICogQ1BVIGNhY2hlIGxp bmVzIGZvciB0aGlzIG9iamVjdCwgc2luY2UgY2xmbHVzaCB3b3VsZCBoYXZlCj4gKwkJICogaGFw cGVuZWQgd2hlbiB0aGUgb2JqZWN0IGxhc3QgbW92ZWQgb3V0IG9mIENQVSB3cml0ZSBkb21haW4u Cj4gKwkJICovCj4gKwkJaWYgKCFvYmotPmNhY2hlX2NsZWFuKQo+ICsJCQlpOTE1X2dlbV9jbGZs dXNoX29iamVjdChvYmosIGZhbHNlKTsKPiArCQlvYmotPmNhY2hlX2NsZWFuID0gZmFsc2U7Cj4g IAo+ICAJCW9iai0+YmFzZS5yZWFkX2RvbWFpbnMgfD0gSTkxNV9HRU1fRE9NQUlOX0NQVTsKPiAg CX0KPiAtLSAKPiAxLjkuMgo+IAo+IF9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fCj4gSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdAo+IEludGVsLWdmeEBsaXN0cy5m cmVlZGVza3RvcC5vcmcKPiBodHRwOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlz dGluZm8vaW50ZWwtZ2Z4CgotLSAKVmlsbGUgU3lyasOkbMOkCkludGVsIE9UQwpfX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBs aXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cDovL2xpc3RzLmZyZWVkZXNr dG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2ludGVsLWdmeAo=