From mboxrd@z Thu Jan 1 00:00:00 1970 From: Imre Deak Subject: Re: [Intel-gfx] [PATCH] drm: Avoid the double clflush on the last cache line in drm_clflush_virt_range() Date: Thu, 18 Jun 2015 18:31:18 +0300 Message-ID: <1434641478.30307.32.camel@intel.com> References: <1433948281-25791-1-git-send-email-chris@chris-wilson.co.uk> <557945EC.8000809@intel.com> <20150611083333.GH12731@nuc-i3427.alporthouse.com> Reply-To: imre.deak@intel.com Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20150611083333.GH12731@nuc-i3427.alporthouse.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Chris Wilson Cc: Dave Gordon , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gdG8sIDIwMTUtMDYtMTEgYXQgMDk6MzMgKzAxMDAsIENocmlzIFdpbHNvbiB3cm90ZToKPiBP biBUaHUsIEp1biAxMSwgMjAxNSBhdCAwOToyNToxNkFNICswMTAwLCBEYXZlIEdvcmRvbiB3cm90 ZToKPiA+IE9uIDEwLzA2LzE1IDE1OjU4LCBDaHJpcyBXaWxzb24gd3JvdGU6Cj4gPiA+IEFzIHRo ZSBjbGZsdXNoIG9wZXJhdGVzIG9uIGNhY2hlIGxpbmVzLCBhbmQgd2UgY2FuIGZsdXNoIGFueSBi eXRlCj4gPiA+IGFkZHJlc3MsIGluIG9yZGVyIHRvIGZsdXNoIGFsbCBieXRlcyBnaXZlbiBpbiB0 aGUgcmFuZ2Ugd2UgaXNzdWUgYW4KPiA+ID4gZXh0cmEgY2xmbHVzaCBvbiB0aGUgbGFzdCBieXRl IHRvIGVuc3VyZSB0aGUgbGFzdCBjYWNoZWxpbmUgaXMgZmx1c2hlZC4KPiA+ID4gV2UgY2FuIGNh biB0aGUgaXRlcmF0aW9uIHRvIGJlIG92ZXIgdGhlIGFjdHVhbCBjYWNoZSBsaW5lcyB0byBhdm9p ZCB0aGlzCj4gPiA+IGRvdWJsZSBjbGZsdXNoIG9uIHRoZSBsYXN0IGJ5dGUuCj4gPiA+IAo+ID4g PiBTaWduZWQtb2ZmLWJ5OiBDaHJpcyBXaWxzb24gPGNocmlzQGNocmlzLXdpbHNvbi5jby51az4K PiA+ID4gQ2M6IEltcmUgRGVhayA8aW1yZS5kZWFrQGludGVsLmNvbT4KPiA+ID4gLS0tCj4gPiA+ ICBkcml2ZXJzL2dwdS9kcm0vZHJtX2NhY2hlLmMgfCA1ICsrKy0tCj4gPiA+ICAxIGZpbGUgY2hh bmdlZCwgMyBpbnNlcnRpb25zKCspLCAyIGRlbGV0aW9ucygtKQo+ID4gPiAKPiA+ID4gZGlmZiAt LWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9kcm1fY2FjaGUuYyBiL2RyaXZlcnMvZ3B1L2RybS9kcm1f Y2FjaGUuYwo+ID4gPiBpbmRleCA5YTYyZDdhNTM1NTMuLjY3NDNmZjdkY2NmYSAxMDA2NDQKPiA+ ID4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2RybV9jYWNoZS5jCj4gPiA+ICsrKyBiL2RyaXZlcnMv Z3B1L2RybS9kcm1fY2FjaGUuYwo+ID4gPiBAQCAtMTMwLDExICsxMzAsMTIgQEAgZHJtX2NsZmx1 c2hfdmlydF9yYW5nZSh2b2lkICphZGRyLCB1bnNpZ25lZCBsb25nIGxlbmd0aCkKPiA+ID4gIHsK PiA+ID4gICNpZiBkZWZpbmVkKENPTkZJR19YODYpCj4gPiA+ICAJaWYgKGNwdV9oYXNfY2xmbHVz aCkgewo+ID4gPiArCQljb25zdCBpbnQgc2l6ZSA9IGJvb3RfY3B1X2RhdGEueDg2X2NsZmx1c2hf c2l6ZTsKPiA+ID4gIAkJdm9pZCAqZW5kID0gYWRkciArIGxlbmd0aDsKPiA+ID4gKwkJYWRkciA9 ICh2b2lkICopKCgodW5zaWduZWQgbG9uZylhZGRyKSAmIC1zaXplKTsKPiA+IAo+ID4gU2hvdWxk IHRoaXMgY2FzdCBiZSB0byB1aW50cHRyX3Q/Cj4gCj4gVGhlIGtlcm5lbCBoYXMgYSBzdHJpY3Qg ZXF1aXZhbGVuY2UgYmV0d2VlbiBzaXplb2YodW5zaWduZWQgbG9uZykgYW5kCj4gc2l6ZW9mKHBv aW50ZXIpLiBZb3Ugd2lsbCBzZWUgdW5zaWduZWQgbG9uZyB1c2VkIHVuaXZlcnNhbGx5IHRvIHBh c3MKPiBhbG9uZyBwb2ludGVycyB0byBmdW5jdGlvbnMgYW5kIGFzIGNsb3N1cmVzLgo+IAo+ID4g T3IgaW50cHRyX3QsIGFzIHNpemUgaGFzIHNvbWV3aGF0Cj4gPiBzdHJhbmdlbHkgYmVlbiBkZWZp bmVkIGFzIHNpZ25lZD8gVG8gY29tcGxldGUgdGhlIG1peCwgeDg2X2NsZmx1c2hfc2l6ZQo+ID4g aXMgJ3UxNichIFNvIG1heWJlIHdlIHNob3VsZCB3cml0ZQo+ID4gCj4gPiArCQljb25zdCBzaXpl X3Qgc2l6ZSA9IGJvb3RfY3B1X2RhdGEueDg2X2NsZmx1c2hfc2l6ZTsKPiA+ICsJCWNvbnN0IHNp emVfdCBtYXNrID0gfihzaXplIC0gMSk7Cj4gPiAgCQl2b2lkICplbmQgPSBhZGRyICsgbGVuZ3Ro Owo+ID4gKwkJYWRkciA9ICh2b2lkICopKCgodWludHB0cl90KWFkZHIpICYgbWFzayk7Cj4gCj4g Tm8uIHNpemVfdCBoYXMgdmVyeSBwb29yIGRlZmluaXRpb24gaW5zaWRlIHRoZSBrZXJuZWwgLSB3 aGF0IGRvZXMgdGhlCj4gbWF4aW11bSBzaXplIG9mIGEgdXNlcnNwYWNlIGFsbG9jYXRpb24gaGF2 ZSB0byBkbyB3aXRoIGtlcm5lbCBpbnRlcm5hbHM/Cj4gCj4gTGV0J3Mga2VlcCB1c2Vyc3BhY2Ug dHlwZXMgaW4gdXNlcnNwYWNlLCBvciBlbHNlIHdlIGVuZCB1cCB3aXRoCj4gaTkxNV9nZW1fZ3R0 LmMuCgpJIGFsc28gdGhpbmsgdXNpbmcgdW5zaWduZWQgbG9uZyBmb3IgdmlydHVhbCBhZGRyZXNz ZXMgaXMgc3RhbmRhcmQgaW4KdGhlIGtlcm5lbCBhbmQgSSBjYW4ndCBzZWUgaG93IHVzaW5nIGlu dCB3b3VsZCBsZWFkIHRvIHByb2JsZW1zIGdpdmVuCnRoZSBleHBlY3RlZCByYW5nZSBvZiB4ODZf Y2xmbHVzaF9zaXplLCBzbyB0aGlzIGxvb2tzIG9rIHRvIG1lOgpSZXZpZXdlZC1ieTogSW1yZSBE ZWFrIDxpbXJlLmRlYWtAaW50ZWwuY29tPgoKPiAtQ2hyaXMKPiAKCgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0CmRy aS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cDovL2xpc3RzLmZyZWVkZXNrdG9wLm9y Zy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbAo=