From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [PATCH v2 2/2] drm/i915/bxt: Fix inadvertent CPU snooping due to incorrect MOCS config Date: Mon, 2 May 2016 10:28:50 +0200 Message-ID: <20160502082850.GI14148@phenom.ffwll.local> References: <20160426125726.GJ27856@nuc-i3427.alporthouse.com> <1461676675.18080.18.camel@intel.com> <20160426132321.GL27856@nuc-i3427.alporthouse.com> <571F7AA3.8080509@intel.com> <20160426144201.GP27856@nuc-i3427.alporthouse.com> <1461686466.18080.64.camel@intel.com> <20160428081731.GP2558@phenom.ffwll.local> <1461832735.9253.17.camel@intel.com> <20160428144837.GF5784@phenom.ffwll.local> <1461863724.9253.90.camel@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail-wm0-x244.google.com (mail-wm0-x244.google.com [IPv6:2a00:1450:400c:c09::244]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8B3CC6E4D7 for ; Mon, 2 May 2016 08:28:53 +0000 (UTC) Received: by mail-wm0-x244.google.com with SMTP id e201so16044508wme.2 for ; Mon, 02 May 2016 01:28:53 -0700 (PDT) Content-Disposition: inline In-Reply-To: <1461863724.9253.90.camel@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Imre Deak Cc: Eero Tamminen , Michael T Frederick , Valtteri Rantala , intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gVGh1LCBBcHIgMjgsIDIwMTYgYXQgMDg6MTU6MjRQTSArMDMwMCwgSW1yZSBEZWFrIHdyb3Rl Ogo+IE9uIHRvLCAyMDE2LTA0LTI4IGF0IDE2OjQ4ICswMjAwLCBEYW5pZWwgVmV0dGVyIHdyb3Rl Ogo+ID4gT24gVGh1LCBBcHIgMjgsIDIwMTYgYXQgMTE6Mzg6NTVBTSArMDMwMCwgSW1yZSBEZWFr IHdyb3RlOgo+ID4gPiBPbiB0bywgMjAxNi0wNC0yOCBhdCAxMDoxNyArMDIwMCwgRGFuaWVsIFZl dHRlciB3cm90ZToKPiA+ID4gPiBBbHNvLCB5b3UncmUgZ3VhcmFuYXRlZWluZyB0aGF0IG9wZW5j bC9saWJ2YSBkb24ndCBzY3JldyB0aGlzIHVwCj4gPiA+ID4gZWl0aGVyPwo+ID4gPiAKPiA+ID4g SWYgdGhleSBkb24ndCBzZXQgdGhlIGdpdmVuIGJ1ZmZlciB0byBiZSBjYWNoZWQgdmlhIHRoZSBz ZXRfY2FjaGluZwo+ID4gPiBJT0NUTCAoYXMgYSBjb25zZXF1ZW5jZSBtYWtpbmcgdGhlbSBjb2hl cmVudCkgdGhleSBhcmUgYWxyZWFkeQo+ID4gPiBzY3Jld2VkCj4gPiA+IG9uIENIVi4gSWYgdGhl eSBjYWxsIHRoZSBJT0NUTCB0aGV5IGFyZSBmaW5lIG9uIEJYVCB0b28uCj4gPiAKPiA+IFdlIGRv IGltcGxpY2l0IHNldF9jYWNoaW5nIHdoZW4gZGlzcGxheWluZyBzb21ldGhpbmcgdG8gc29tZXRo aW5nCj4gPiBjb2hlcmVudC4gVG8gbWFrZSB0aGF0IHdvcmsgdXNlcnNwYWNlIHNob3VsZCB1c2Ug dGhlICJ1c2UgUFRFIiBtb2RlIGJ5Cj4gPiBkZWZhdWx0LCBleGNlcHQgd2hlbiB0aGV5IHJlYWxs eSBrbm93IHdoYXQgdGhleSdyZSBkb2luZy4KPiA+IFRoYXQncyBhbHNvIHRoZSBtb2RlIHRoYXQn cyBzdXBwb3NlZCB0byBnaXZlIHlvdSB0aGUgbW9zdCByZWFzb25hYmxlCj4gPiBwZXJmb3JtYW5j ZS4gQnV0IHNvbWVob3cgdGhhdCBtb2RlIGVuZGVkIHVwIGluIE1PQ1MgZW50cnkgMSwgc28gcHJl dHR5IG11Y2gKPiA+IGd1YXJhbnRlZWQgdXNlcnNwYWNlIHdpbGwgZ2V0IGl0IHdyb25nLiBNZXNh IGp1c3QgaGl0IGEgcGVyZiBzbmFnLCBidXQKPiA+IG1pZ2h0IGFzIHdlbGwgaGF2ZSBiZWVuIHZp c3VhbCBjb3JydXB0aW9uLiBJIHRoaW5rIGl0J2QgYmUgYSBsb3Qgc2FmZSB0bwo+ID4gbWFrZSAi dXNlIFBURSIgZW50cnkgMC4KPiAKPiBNZXNhIHVzZXMgZW50cmllcyAxIGFuZCAyLiBJZiBzb21l dGhpbmcgZWxzZSBsaWtlIG9wZW5jbCBvciBsaWJ2YSAob3IKPiBldmVuIE1lc2EgZm9yIHRoYXQg bWF0dGVyKSB1c2VzIGluZGV4IDAgZm9yIFBURSBwYXNzLXRocm91Z2ggdGhhdCdzIGEKPiBidWcg b24gaXRzIG93bi4gSSBkb24ndCBrbm93IGlmIHRoaXMgaXMgdGhlIGNhc2UsIGJ1dCBpdCdzIGEg c2VwYXJhdGUKPiBpc3N1ZSBmcm9tIHdoYXQgSSdtIHRyeWluZyB0byBmaXggaGVyZS4KPiAKPiBU aGlzIGlzbid0IGFib3V0IGEgY2FzZSB3aGVyZSBhIFBURSBwYXNzLXRocm91Z2ggZW50cnkgbmVl ZHMgdG8gYmUKPiBwcm92aWRlZCwgYnV0IGFib3V0IHRoZSBjYXNlIHdoZXJlIGEgY2FjaGVkIGJ1 dCBub24tY29oZXJlbnQgb25lIGlzCj4gbmVlZGVkLiBNZXNhIGFzc3VtZXMgdGhpcyB0byBiZSBl bnRyeSAyIGFuZCBJIGRvbid0IHNlZSB3aHkgd2UgY291bGRuJ3QKPiBtYWtlIHN1cmUgdGhhdCB0 aGlzIGFzc3VtcHRpb24gaG9sZHMuIE5vdGUgdGhhdCB0aGlzIGVudHJ5IG9uIEJYVCBjb3VsZAo+ IGJlIGJvdGggYSBQVEUgcGFzcy10aHJvdWdoIG9uZSBhcyBpbiB0aGlzIHBhdGNoIG9yIExMQy1V Qy4KClllYWggbXkgY29tbWVudCBhYm91dCBlbnRyeSAjMCB3YXMgaXMgYSBkaWZmZXJlbnQgdHJh Y2sgb2YgZGlzY3Vzc2lvbi4KU2hvdWxkIHN0aWxsIGZpeCBpdCB1cCB3aGlsZSB3ZSBjbGFyaWZ5 IHdoYXQgZW50cmllcyAxJjIgcmVhbGx5IG1lYW4uCgpXaGVuIGRlZmluaW5nIGVudHJpZXMgYXMg ImNhY2hlZCIgcGxlYXNlIG1ha2UgdHJpcGxlIHN1cmUgd2hhdCBleGFjdGx5IHlvdQptZWFuIGJ5 IHRoYXQuIFNpbmNlIGVMTEMsIExMQyBhbmQgb24tZ3B1IEwzJCBhcmUgYWxsIGRpZmZlcmVudCBj YWNoZXMsIGluCmRpZmZlcmVudCBwYXJ0cyBvZiB0aGUgY29oZXJlbmN5IGZhYnJpYy4gQW5kIEwz JCBoYXMgZnVuY3Rpb25hbCByZWxldmFuY2UKc2luY2UgaWYgdGhhdCdzIG5vdCBzZXQgY29tcHV0 ZSBmZWF0dXJlcyBmYWxsIGFwYXJ0LgoKU28gbWF5YmUgYSBiZXR0ZXIgZGVmaW5pdGlvbiB3b3Vs ZCBiZSAiTDMkIGNhY2hlZCAodXNlZnVsIGZvcgpjb21wdXRlKStwZXJmb3JtYW5jZSBvcHRpbWl6 ZWQgb3RoZXJ3aXNlIGZvciBnZW5lcmFsIHVzZSttaWdodCBiZQppbmNvaGVyZW50IGRlcGVuZGlu ZyB1cG9uIHBsYXRmb3JtIiBmb3IgZW50cnkgMi4gVGhhdCB3b3VsZCBtYWtlIHNlbnNlIGFuZApj b3ZlcnMgaXQgYWxsLCBidXQgaW1vIHlvdXJzIGEgYml0IHRvbyBzaW1wbGUgKGFzc3VtaW5nIG15 IHVuZGVyc3RhbmRpbmcKb2YgY2FjaGUgYXJjaGl0ZWN0dXJlIG9uIGdlbjkgaXMgYWNjdXJhdGUs IHRoZXkgY2hhbmdlIGl0IGFsbCB0aGUgYmxvb2R5CnRpbWUpLiBOb3RlIHRoYXQgZS5nLiBvbiBv bGRlciBwbGF0Zm9ybXMgd2UgY291bGQgZW5hYmxlIEwzJCBlaXRoZXIgaW4gdGhlClBURSwgb3Ig aW4gTU9DUyBzZXR0aW5ncyBpbiB0aGUgYmF0Y2ggaXRzZWxmLCB3aGljaCBpcyB3aHkgdGhlICJ1 c2VmdWwgZm9yCmNvbXB1dGUiIG9ubHkgc3RhcnRlZCB0byBiZWNvbWUgcmVsZXZhbnQgZm9yIGdl bjkuIEFuZCB3aHkgd2UgbmVlZGVkIHRoZQprZXJuZWwgTU9DUyBwYXRjaCByZWFsbHkuCgpTaW1p bGlsYXJseSB3ZSdkIG5lZWQgdG8gY29tZSB1cCB3aXRoIHNvbWV0aGluZyBhY2N1cmF0ZSBmb3Ig IzEgYW5kICMwCihhbmQgaXQgc291bmRzIGxpa2UgdGhleSBib3RoIG5lZWQgdG8gbWVhbiBQVEUg ZGVmYXVsdCBwZXIga2VybmVsKS4gSG9vcmF5CmZvciB3YXN0aW5nIG9uZSBlbnRyeSA7LSkKLURh bmllbAotLSAKRGFuaWVsIFZldHRlcgpTb2Z0d2FyZSBFbmdpbmVlciwgSW50ZWwgQ29ycG9yYXRp b24KaHR0cDovL2Jsb2cuZmZ3bGwuY2gKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJl ZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGlu Zm8vaW50ZWwtZ2Z4Cg==