From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Goel, Akash" Subject: Re: [PATCH] drm/i915 : Avoid superfluous invalidation of CPU cache lines Date: Tue, 1 Dec 2015 17:37:13 +0530 Message-ID: <565D8D71.8020202@intel.com> References: <1448359524-11814-1-git-send-email-akash.goel@intel.com> <20151124100406.GD4437@intel.com> <20151124181431.GD17050@phenom.ffwll.local> <20151124223938.GC16277@nuc-i3427.alporthouse.com> <20151125092109.GO17050@phenom.ffwll.local> <56557F13.1010704@intel.com> <20151125100055.GR17050@phenom.ffwll.local> <565BEB8E.3010401@intel.com> <20151130081519.GI17050@phenom.ffwll.local> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTP id C22E972102 for ; Tue, 1 Dec 2015 04:07:19 -0800 (PST) In-Reply-To: <20151130081519.GI17050@phenom.ffwll.local> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Daniel Vetter Cc: intel-gfx@lists.freedesktop.org, akash.goel@intel.com List-Id: intel-gfx@lists.freedesktop.org CgpPbiAxMS8zMC8yMDE1IDE6NDUgUE0sIERhbmllbCBWZXR0ZXIgd3JvdGU6Cj4gT24gTW9uLCBO b3YgMzAsIDIwMTUgYXQgMTE6NTQ6MTRBTSArMDUzMCwgR29lbCwgQWthc2ggd3JvdGU6Cj4+Cj4+ Cj4+IE9uIDExLzI1LzIwMTUgMzozMCBQTSwgRGFuaWVsIFZldHRlciB3cm90ZToKPj4+IE9uIFdl ZCwgTm92IDI1LCAyMDE1IGF0IDAyOjU3OjQ3UE0gKzA1MzAsIEdvZWwsIEFrYXNoIHdyb3RlOgo+ Pj4+Cj4+Pj4KPj4+PiBPbiAxMS8yNS8yMDE1IDI6NTEgUE0sIERhbmllbCBWZXR0ZXIgd3JvdGU6 Cj4+Pj4+IE9uIFR1ZSwgTm92IDI0LCAyMDE1IGF0IDEwOjM5OjM4UE0gKzAwMDAsIENocmlzIFdp bHNvbiB3cm90ZToKPj4+Pj4+IE9uIFR1ZSwgTm92IDI0LCAyMDE1IGF0IDA3OjE0OjMxUE0gKzAx MDAsIERhbmllbCBWZXR0ZXIgd3JvdGU6Cj4+Pj4+Pj4gT24gVHVlLCBOb3YgMjQsIDIwMTUgYXQg MTI6MDQ6MDZQTSArMDIwMCwgVmlsbGUgU3lyasOkbMOkIHdyb3RlOgo+Pj4+Pj4+PiBPbiBUdWUs IE5vdiAyNCwgMjAxNSBhdCAwMzozNToyNFBNICswNTMwLCBha2FzaC5nb2VsQGludGVsLmNvbSB3 cm90ZToKPj4+Pj4+Pj4+IEZyb206IEFrYXNoIEdvZWwgPGFrYXNoLmdvZWxAaW50ZWwuY29tPgo+ Pj4+Pj4+Pj4KPj4+Pj4+Pj4+IFdoZW4gdGhlIG9iamVjdCBpcyBtb3ZlZCBvdXQgb2YgQ1BVIHJl YWQgZG9tYWluLCB0aGUgY2FjaGVsaW5lcwo+Pj4+Pj4+Pj4gYXJlIG5vdCBpbnZhbGlkYXRlZCBp bW1lZGlhdGVseS4gVGhlIGludmFsaWRhdGlvbiBpcyBkZWZlcnJlZCB0aWxsCj4+Pj4+Pj4+PiBu ZXh0IHRpbWUgdGhlIG9iamVjdCBpcyBicm91Z2h0IGJhY2sgaW50byBDUFUgcmVhZCBkb21haW4u Cj4+Pj4+Pj4+PiBCdXQgdGhlIGludmFsaWRhdGlvbiBpcyBkb25lIHVuY29uZGl0aW9uYWxseSwg aS5lLiBldmVuIGZvciB0aGUgY2FzZQo+Pj4+Pj4+Pj4gd2hlcmUgdGhlIGNhY2hlbGluZXMgd2Vy ZSBmbHVzaGVkIHByZXZpb3VzbHksIHdoZW4gdGhlIG9iamVjdCBtb3ZlZCBvdXQKPj4+Pj4+Pj4+ IG9mIENQVSB3cml0ZSBkb21haW4uIFRoaXMgaXMgYXZvaWRhYmxlIGFuZCB3b3VsZCBsZWFkIHRv IHNvbWUgb3B0aW1pemF0aW9uLgo+Pj4+Pj4+Pj4gVGhvdWdoIHRoaXMgaXMgbm90IGEgaHlwb3Ro ZXRpY2FsIGNhc2UsIGJ1dCBpcyB1bmxpa2VseSB0byBvY2N1ciBvZnRlbi4KPj4+Pj4+Pj4+IFRo ZSBhaW0gaXMgdG8gZGV0ZWN0IGNoYW5nZXMgdG8gdGhlIGJhY2tpbmcgc3RvcmFnZSB3aGlsc3Qg dGhlCj4+Pj4+Pj4+PiBkYXRhIGlzIHBvdGVudGlhbGx5IGluIHRoZSBDUFUgY2FjaGUsIGFuZCBv bmx5IGNsZmx1c2ggaW4gdGhvc2UgY2FzZS4KPj4+Pj4+Pj4+Cj4+Pj4+Pj4+PiBTaWduZWQtb2Zm LWJ5OiBDaHJpcyBXaWxzb24gPGNocmlzQGNocmlzLXdpbHNvbi5jby51az4KPj4+Pj4+Pj4+IFNp Z25lZC1vZmYtYnk6IEFrYXNoIEdvZWwgPGFrYXNoLmdvZWxAaW50ZWwuY29tPgo+Pj4+Pj4+Pj4g LS0tCj4+Pj4+Pj4+PiAgIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZHJ2LmggfCAxICsKPj4+ Pj4+Pj4+ICAgZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9nZW0uYyB8IDkgKysrKysrKystCj4+ Pj4+Pj4+PiAgIDIgZmlsZXMgY2hhbmdlZCwgOSBpbnNlcnRpb25zKCspLCAxIGRlbGV0aW9uKC0p Cj4+Pj4+Pj4+Pgo+Pj4+Pj4+Pj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5 MTVfZHJ2LmggYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pOTE1X2Rydi5oCj4+Pj4+Pj4+PiBpbmRl eCBkZjkzMTZmLi5mZWRiNzFkIDEwMDY0NAo+Pj4+Pj4+Pj4gLS0tIGEvZHJpdmVycy9ncHUvZHJt L2k5MTUvaTkxNV9kcnYuaAo+Pj4+Pj4+Pj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkx NV9kcnYuaAo+Pj4+Pj4+Pj4gQEAgLTIwOTgsNiArMjA5OCw3IEBAIHN0cnVjdCBkcm1faTkxNV9n ZW1fb2JqZWN0IHsKPj4+Pj4+Pj4+ICAgCXVuc2lnbmVkIGxvbmcgZ3Rfcm86MTsKPj4+Pj4+Pj4+ ICAgCXVuc2lnbmVkIGludCBjYWNoZV9sZXZlbDozOwo+Pj4+Pj4+Pj4gICAJdW5zaWduZWQgaW50 IGNhY2hlX2RpcnR5OjE7Cj4+Pj4+Pj4+PiArCXVuc2lnbmVkIGludCBjYWNoZV9jbGVhbjoxOwo+ Pj4+Pj4+Pgo+Pj4+Pj4+PiBTbyBub3cgd2UgaGF2ZSBjYWNoZV9kaXJ0eSBhbmQgY2FjaGVfY2xl YW4gd2hpY2ggc2VlbXMgcmVkdW5kYW50LAo+Pj4+Pj4+PiBleGNlcHQgc29tZWhvdyBjYWNoZV9k aXJ0eSAhPSAhY2FjaGVfY2xlYW4/Cj4+Pj4+Pgo+Pj4+Pj4gRXhhY3RseSwgbm90IGVudGlyZWx5 IHJlZHVuZGFudC4gSSBkaWQgdGhpbmsgc29tZXRoaW5nIGFsb25nIE1FU0kgbGluZXMKPj4+Pj4+ IHdvdWxkIGJlIHVzZWZ1bCwgYnV0IHRoYXQgZGlkbid0IGNhcHR1cmUgdGhlIGRpZmZlcmVudCBt ZWFuaW5ncyB3ZQo+Pj4+Pj4gZW1wbG95Lgo+Pj4+Pj4KPj4+Pj4+IGNhY2hlX2RpcnR5IHRyYWNr cyB3aGV0aGVyIHdlIGhhdmUgYmVlbiBlbGlkaW5nIHRoZSBjbGZsdXNoLgo+Pj4+Pj4KPj4+Pj4+ IGNhY2hlX2NsZWFuIHRyYWNrcyB3aGV0aGVyIHdlIGtub3cgdGhlIGNhY2hlIGhhcyBiZWVuIGNv bXBsZXRlbHkKPj4+Pj4+IGNsZmx1c2hlZC4KPj4+Pj4+Cj4+Pj4+PiAoY2FjaGVfY2xlYW4gaW1w bGllcyAhY2FjaGVfZGlydHksIGJ1dAo+Pj4+Pj4gIWNhY2hlX2NsZWFuIGRvZXMgbm90IGltcGx5 IGNhY2hlX2RpcnR5KQo+Pj4+Pj4KPj4+Pj4+PiBXZSBhbHNvIGhhdmUgcmVhZF9kb21haW5zICYg RE9NQUlOX0NQVS4gV2hpY2ggaXMgd2hpY2g/Cj4+Pj4+Pgo+Pj4+Pj4gRE9NQUlOX0NQVSBpbXBs aWVzIHRoYXQgdGhlIG9iamVjdCBtYXkgYmUgaW4gdGhlIGNwdSBjYWNoZSAobW9kdWxvIHRoZQo+ Pj4+Pj4gY2xmbHVzaCBlbGlzaW9uIGFib3ZlKS4KPj4+Pj4+Cj4+Pj4+PiBET01BSU5fQ1BVIGlt cGxpZXMgIWNhY2hlX2NsZWFuCj4+Pj4+Pgo+Pj4+Pj4gYW5kIGV2ZW4KPj4+Pj4+Cj4+Pj4+PiBj YWNoZV9jbGVhbiBpbXBsaWVzICFET01BSU5fQ1BVCj4+Pj4+Pgo+Pj4+Pj4gYnV0Cj4+Pj4+Pgo+ Pj4+Pj4gIURPTUFJTl9DUFUgZG9lcyBub3QgaW1wbHkgY2FjaGVfY2xlYW4KPj4+Pj4KPj4+Pj4g QWxsIHRoZSBhYm92ZSBzaG91bGQgYmUgaW4gdGhlIGtlcm5lbGRvYyAocGVyLXN0cnVjdC1tZW1i ZXIgY29tbWVudHMKPj4+Pj4gcGxlYXNlKSBvZiBkcm1faTkxNV9nZW1fb2JqZWN0LiBBa2FzaCwg Y2FuIHlvdSBwbGVhc2UgYW1lbmQgeW91ciBwYXRjaD8KPj4+Pj4gQW5kIHBsZWFzZSBtYWtlIHN1 cmUgd2UgZG8gaW5jbHVkZSB0aGF0IGtlcm5lbGRvYyBzb21ld2hlcmUgLi4uIG1pZ2h0IG5lZWQK Pj4+Pj4gYW4gdXBmcm9udCBwYXRjaCB0byBkbyB0aGF0LCBmb3IganVzdCBkcm1faTkxNV9nZW1f b2JqZWN0Lgo+Pj4+Cj4+Pj4gSSBmbG9hdGVkIHRoZSBhbWVuZGVkIHBhdGNoLCBlYXJsaWVyIHRv ZGF5LAo+Pj4+IGh0dHA6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvYXJjaGl2ZXMvaW50ZWwtZ2Z4 LzIwMTUtTm92ZW1iZXIvMDgxMTk0Lmh0bWwuCj4+Pj4gUGxlYXNlIGtpbmRseSBjaGVjayB0aGF0 Lgo+Pj4KPj4+IEFscmVhZHkgZG9uZSBhbmQgcmVwbGllZCBoZXJlIGJlY2F1c2UgSSB0aGluayB0 aGlzIHNob3VsZCBiZSBsaWZ0ZWQgdG8KPj4+IGtlcm5lbGRvYyBmb3IgdGhlIHN0cnVjdHVyZSBp dHNlbGYuIFRoYXQncyB3aHkgSSByZXBsaWVkIGhlcmUgOy0pCj4+PiAtRGFuaWVsCj4+IEhpIERh bmllbCwKPj4KPj4gSSB0aGluayB0aGUgcGF0Y2ggdG8gcHJvdmlkZSBhIGtlcm5lbC1kb2MgZm9y IGp1c3QgdGhlIGRybV9pOTE1X2dlbV9vYmplY3QKPj4gc3RydWN0dXJlIGNhbiBiZSBzdWJtaXR0 ZWQgaW5kZXBlbmRlbnRseSBvZiB0aGlzIHBhdGNoLiBUaGUga2VybmVsLWRvYyBwYXJ0Cj4+IGNh biBiZSBkb25lIGFzIGEgZm9sbG93IHVwIHBhdGNoLgo+Cj4gSW1vIGl0IHNob3VsZCBiZSBkb25l IGZpcnN0LCBzbyB0aGF0IHlvdXIgY2FjaGUgb3B0aW1pemF0aW9uIGNhbiBhbHNvCj4gY29ycmVj dGx5IHVwZGF0ZSB0aGUgZG9jdW1lbnRhdGlvbi4KPiAtRGFuaWVsCgpIaSBEYW5pZWwsCgpJIHRh a2UgYW4gQVIgdG8gbGF0ZXIgZmxvYXQgYSBrZXJuZWwtZG9jIHBhdGNoIGZvciB0aGUgCidkcm1f aTkxNV9nZW1fb2JqZWN0JyBzdHJ1Y3R1cmUsIG9uIHRoaXMgcHJldGV4dCBjYW4geW91IHBsZWFz ZSBjb25zaWRlciAKdGhpcyBwYXRjaCwKaHR0cDovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9hcmNo aXZlcy9pbnRlbC1nZngvMjAxNS1Ob3ZlbWJlci8wODE1MTUuaHRtbAoKQmVzdCByZWdhcmRzCkFr YXNoCgo+Cgo+Pgo+PiBGb3IgdGhlIGN1cnJlbnQgcGF0Y2gsIGhhdmUgYWRkZWQgdGhlIHBlci1z dHJ1Y3QtbWVtYmVyIGNvbW1lbnRzIGZvciB0aGUKPj4gJ2NhY2hlX2NsZWFuJyBmaWVsZC4KPj4K Pj4gQmVzdCByZWdhcmRzCj4+IEFrYXNoCj4+Cj4+Pgo+Cl9fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4 QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxt YW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg==