From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jerome Glisse Subject: Re: [RFC 06/13] drm/i915/svm: Page table mirroring support Date: Mon, 25 Nov 2019 11:33:27 -0500 Message-ID: <20191125163327.GA5516@redhat.com> References: <20191122205734.15925-1-niranjana.vishwanathapura@intel.com> <20191122205734.15925-7-niranjana.vishwanathapura@intel.com> <20191122233308.GA7481@mellanox.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [205.139.110.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id AD92789DB7 for ; Mon, 25 Nov 2019 16:33:37 +0000 (UTC) In-Reply-To: <20191122233308.GA7481@mellanox.com> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Jason Gunthorpe Cc: "intel-gfx@lists.freedesktop.org" , "sanjay.k.kumar@intel.com" , "sudeep.dutt@intel.com" , "dri-devel@lists.freedesktop.org" , "dave.hansen@intel.com" , "jon.bloomfield@intel.com" , "daniel.vetter@intel.com" , Niranjana Vishwanathapura , "ira.weiny@intel.com" , "dan.j.williams@intel.com" List-Id: dri-devel@lists.freedesktop.org T24gRnJpLCBOb3YgMjIsIDIwMTkgYXQgMTE6MzM6MTJQTSArMDAwMCwgSmFzb24gR3VudGhvcnBl IHdyb3RlOgo+IE9uIEZyaSwgTm92IDIyLCAyMDE5IGF0IDEyOjU3OjI3UE0gLTA4MDAsIE5pcmFu amFuYSBWaXNod2FuYXRoYXB1cmEgd3JvdGU6CgpbLi4uXQoKPiA+ICtzdGF0aWMgaW50Cj4gPiAr aTkxNV9yYW5nZV9mYXVsdChzdHJ1Y3QgaTkxNV9zdm0gKnN2bSwgc3RydWN0IGhtbV9yYW5nZSAq cmFuZ2UpCj4gPiArewo+ID4gKwlsb25nIHJldDsKPiA+ICsKPiA+ICsJcmFuZ2UtPmRlZmF1bHRf ZmxhZ3MgPSAwOwo+ID4gKwlyYW5nZS0+cGZuX2ZsYWdzX21hc2sgPSAtMVVMOwo+ID4gKwo+ID4g KwlyZXQgPSBobW1fcmFuZ2VfcmVnaXN0ZXIocmFuZ2UsICZzdm0tPm1pcnJvcik7Cj4gPiArCWlm IChyZXQpIHsKPiA+ICsJCXVwX3JlYWQoJnN2bS0+bW0tPm1tYXBfc2VtKTsKPiA+ICsJCXJldHVy biAoaW50KXJldDsKPiA+ICsJfQo+IAo+IAo+IFVzaW5nIGEgdGVtcG9yYXJ5IHJhbmdlIGlzIHRo ZSBwYXR0ZXJuIGZyb20gbm91dmVhdSwgaXMgaXQgcmVhbGx5Cj4gbmVjZXNzYXJ5IGluIHRoaXMg ZHJpdmVyPwoKSnVzdCB0byBjb21tZW50IG9uIHRoaXMsIGZvciBHUFUgdGhlIHVzYWdlIG1vZGVs IGlzIG5vdCBhcHBsaWNhdGlvbgpyZWdpc3RlciByYW5nZSBvZiB2aXJ0dWFsIGFkZHJlc3MgaXQg d2FudHMgdG8gdXNlLiBJdCBpcyBHUFUgY2FuCmFjY2VzcyBfYW55XyBDUFUgdmFsaWQgYWRkcmVz cyBqdXN0IGxpa2UgdGhlIENQVSB3b3VsZCAobW9kdWxvIG1tYXAKb2YgZGV2aWNlIGZpbGUpLgoK VGhpcyBpcyBiZWNhdXNlIHRoZSBBUEkgeW91IHdhbnQgaW4gdXNlcnNwYWNlIGlzIGFwcGxpY2F0 aW9uIHBhc3NpbmcKcmFuZG9tIHBvaW50ZXIgdG8gdGhlIEdQVSBhbmQgR1BVIGJlaW5nIGFibGUg dG8gY2hhc2UgZG93biBhbnkga2luZApvZiByYW5kb20gcG9pbnRlciBjaGFpbiAoYXNzdW1pbmcg YWxsIHZhbGlkIGllIHBvaW50aW5nIHRvIHZhbGlkCnZpcnR1YWwgYWRkcmVzcyBmb3IgdGhlIHBy b2Nlc3MpLgoKVGhpcyBpcyB1bmxpa2UgdGhlIFJETUEgY2FzZS4KCgpUaGF0IGJlaW5nIHNhaWQs IGZvciBiZXN0IHBlcmZvcm1hbmNlIHdlIHN0aWxsIGV4cGVjdCB3ZWxsIGJlaGF2aW5nCmFwcGxp Y2F0aW9uIHRvIHByb3ZpZGUgaGludCB0byBrZXJuZWwgc28gdGhhdCB3ZSBrbm93IGlmIGEgcmFu Z2Ugb2YKdmlydHVhbCBhZGRyZXNzIGlzIGxpa2VseSB0byBiZSB1c2UgYnkgdGhlIEdQVSBvciBu b3QuIEJ1dCB0aGlzIGlzCm5vdCwgYW5kIHNob3VsZCBub3QgYmUgYSByZXF1aXJlbWVudC4KCgpJ IHBvc3RlZCBwYXRjaHNldCBhbmQgZ2l2ZW4gdGFsa3MgYWJvdXQgdGhpcywgYnV0IGxvbmcgdGVy bSBpIGJlbGlldmUKd2Ugd2FudCBhIGNvbW1vbiBBUEkgdG8gbWFuYWdlIGhpbnQgcHJvdmlkZWQg YnkgdXNlcnNwYWNlIChzZWUgbXkKdGFsayBhdCBMUEMgdGhpcyB5ZWFyIGFib3V0IG5ldyBzeXNj YWxsIHRvIGJpbmQgbWVtb3J5IHRvIGRldmljZSkuCldpdGggc3VjaCB0aGluZyBpbiBwbGFjZSB3 ZSBjb3VsZCBoYW5nIG1tdSBub3RpZmllciByYW5nZSB0byBpdC4gQnV0CnRoZSBkcml2ZXIgd2ls bCBzdGlsbCBuZWVkIHRvIGJlIGFibGUgdG8gaGFuZGxlIHRoZSBjYXNlIHdoZXJlIHRoZXJlCmlz IG5vIGhpbnQgcHJvdmlkZWQgYnkgdXNlcnNwYWNlIGFuZCB0aHVzIG5vIGJlZm9yZSBrbm93bGVk Z2Ugb2Ygd2hhdApWQSBtaWdodCBiZSBhY2Nlc3NlZC4KCkNoZWVycywKSsOpcsO0bWUKCl9fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWls aW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZy ZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbA==