From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Gunthorpe Subject: Re: [RFC 06/13] drm/i915/svm: Page table mirroring support Date: Tue, 26 Nov 2019 18:32:52 +0000 Message-ID: <20191126183247.GM7481@mellanox.com> References: <20191122205734.15925-1-niranjana.vishwanathapura@intel.com> <20191122205734.15925-7-niranjana.vishwanathapura@intel.com> <20191122233308.GA7481@mellanox.com> <20191125163327.GA5516@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20191125163327.GA5516@redhat.com> Content-Language: en-US Content-ID: <6C47604798A0EE4590B9A5B0D8648078@eurprd05.prod.outlook.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Jerome Glisse Cc: "intel-gfx@lists.freedesktop.org" , "sanjay.k.kumar@intel.com" , "dri-devel@lists.freedesktop.org" , "dave.hansen@intel.com" , "daniel.vetter@intel.com" , "ira.weiny@intel.com" , "dan.j.williams@intel.com" List-Id: dri-devel@lists.freedesktop.org T24gTW9uLCBOb3YgMjUsIDIwMTkgYXQgMTE6MzM6MjdBTSAtMDUwMCwgSmVyb21lIEdsaXNzZSB3 cm90ZToKPiBPbiBGcmksIE5vdiAyMiwgMjAxOSBhdCAxMTozMzoxMlBNICswMDAwLCBKYXNvbiBH dW50aG9ycGUgd3JvdGU6Cj4gPiBPbiBGcmksIE5vdiAyMiwgMjAxOSBhdCAxMjo1NzoyN1BNIC0w ODAwLCBOaXJhbmphbmEgVmlzaHdhbmF0aGFwdXJhIHdyb3RlOgo+IAo+IFsuLi5dCj4gCj4gPiA+ ICtzdGF0aWMgaW50Cj4gPiA+ICtpOTE1X3JhbmdlX2ZhdWx0KHN0cnVjdCBpOTE1X3N2bSAqc3Zt LCBzdHJ1Y3QgaG1tX3JhbmdlICpyYW5nZSkKPiA+ID4gK3sKPiA+ID4gKwlsb25nIHJldDsKPiA+ ID4gKwo+ID4gPiArCXJhbmdlLT5kZWZhdWx0X2ZsYWdzID0gMDsKPiA+ID4gKwlyYW5nZS0+cGZu X2ZsYWdzX21hc2sgPSAtMVVMOwo+ID4gPiArCj4gPiA+ICsJcmV0ID0gaG1tX3JhbmdlX3JlZ2lz dGVyKHJhbmdlLCAmc3ZtLT5taXJyb3IpOwo+ID4gPiArCWlmIChyZXQpIHsKPiA+ID4gKwkJdXBf cmVhZCgmc3ZtLT5tbS0+bW1hcF9zZW0pOwo+ID4gPiArCQlyZXR1cm4gKGludClyZXQ7Cj4gPiA+ ICsJfQo+ID4gCj4gPiAKPiA+IFVzaW5nIGEgdGVtcG9yYXJ5IHJhbmdlIGlzIHRoZSBwYXR0ZXJu IGZyb20gbm91dmVhdSwgaXMgaXQgcmVhbGx5Cj4gPiBuZWNlc3NhcnkgaW4gdGhpcyBkcml2ZXI/ Cj4gCj4gSnVzdCB0byBjb21tZW50IG9uIHRoaXMsIGZvciBHUFUgdGhlIHVzYWdlIG1vZGVsIGlz IG5vdCBhcHBsaWNhdGlvbgo+IHJlZ2lzdGVyIHJhbmdlIG9mIHZpcnR1YWwgYWRkcmVzcyBpdCB3 YW50cyB0byB1c2UuIEl0IGlzIEdQVSBjYW4KPiBhY2Nlc3MgX2FueV8gQ1BVIHZhbGlkIGFkZHJl c3MganVzdCBsaWtlIHRoZSBDUFUgd291bGQgKG1vZHVsbyBtbWFwCj4gb2YgZGV2aWNlIGZpbGUp Lgo+IAo+IFRoaXMgaXMgYmVjYXVzZSB0aGUgQVBJIHlvdSB3YW50IGluIHVzZXJzcGFjZSBpcyBh cHBsaWNhdGlvbiBwYXNzaW5nCj4gcmFuZG9tIHBvaW50ZXIgdG8gdGhlIEdQVSBhbmQgR1BVIGJl aW5nIGFibGUgdG8gY2hhc2UgZG93biBhbnkga2luZAo+IG9mIHJhbmRvbSBwb2ludGVyIGNoYWlu IChhc3N1bWluZyBhbGwgdmFsaWQgaWUgcG9pbnRpbmcgdG8gdmFsaWQKPiB2aXJ0dWFsIGFkZHJl c3MgZm9yIHRoZSBwcm9jZXNzKS4KPiAKPiBUaGlzIGlzIHVubGlrZSB0aGUgUkRNQSBjYXNlLgoK Tm8sIFJETUEgaGFzIHRoZSBmdWxsIGFkZHJlc3Mgc3BhY2Ugb3B0aW9uIGFzIHdlbGwsIGl0IGlz IGNhbGxlZAonaW1wbGljaXQgT0RQJwoKVGhpcyBpcyBpbXBsZW1lbnRlZCBieSByZWdpc3Rlcmlu ZyByYW5nZXMgYXQgYSBsZXZlbCBpbiBvdXIgcGFnZQp0YWJsZSAoY3VycmVudGx5IDUxMkcpIHdo ZW5ldmVyIHRoYXQgbGV2ZWwgaGFzIHBvcHVsYXRlZCBwYWdlcyBiZWxvdwppdC4KCkkgdGhpbmsg aXMgYSBiZXR0ZXIgc3RyYXRlZ3kgdGhhbiB0ZW1wb3JhcnkgcmFuZ2VzLgoKQnV0IG90aGVyIEdQ VSBkcml2ZXJzIGxpa2UgQU1EIGFyZSB1c2luZyBCTyBhbmQgVFRNIG9iamVjdHMgd2l0aCBmaXhl ZApWQSByYW5nZXMgYW5kIHRoZSByYW5nZSBpcyB0aWVkIHRvIHRoZSBCTy9UVE0uCgpJJ20gbm90 IHN1cmUgaWYgdGhpcyBpOTE1IHVzYWdlIGlzIGNsb3NlciB0byBBTUQgb3IgY2xvc2VyIHRvIG5v dXZlYXUuCgpKYXNvbgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5v cmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1n Zng= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 14709C432C0 for ; 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charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Message-ID: <20191126183252.2nVAxLYb5O1WR4JMW8r2ej80gKOkux9qCmyQQFTfM4c@z> T24gTW9uLCBOb3YgMjUsIDIwMTkgYXQgMTE6MzM6MjdBTSAtMDUwMCwgSmVyb21lIEdsaXNzZSB3 cm90ZToKPiBPbiBGcmksIE5vdiAyMiwgMjAxOSBhdCAxMTozMzoxMlBNICswMDAwLCBKYXNvbiBH dW50aG9ycGUgd3JvdGU6Cj4gPiBPbiBGcmksIE5vdiAyMiwgMjAxOSBhdCAxMjo1NzoyN1BNIC0w ODAwLCBOaXJhbmphbmEgVmlzaHdhbmF0aGFwdXJhIHdyb3RlOgo+IAo+IFsuLi5dCj4gCj4gPiA+ ICtzdGF0aWMgaW50Cj4gPiA+ICtpOTE1X3JhbmdlX2ZhdWx0KHN0cnVjdCBpOTE1X3N2bSAqc3Zt LCBzdHJ1Y3QgaG1tX3JhbmdlICpyYW5nZSkKPiA+ID4gK3sKPiA+ID4gKwlsb25nIHJldDsKPiA+ ID4gKwo+ID4gPiArCXJhbmdlLT5kZWZhdWx0X2ZsYWdzID0gMDsKPiA+ID4gKwlyYW5nZS0+cGZu X2ZsYWdzX21hc2sgPSAtMVVMOwo+ID4gPiArCj4gPiA+ICsJcmV0ID0gaG1tX3JhbmdlX3JlZ2lz dGVyKHJhbmdlLCAmc3ZtLT5taXJyb3IpOwo+ID4gPiArCWlmIChyZXQpIHsKPiA+ID4gKwkJdXBf cmVhZCgmc3ZtLT5tbS0+bW1hcF9zZW0pOwo+ID4gPiArCQlyZXR1cm4gKGludClyZXQ7Cj4gPiA+ ICsJfQo+ID4gCj4gPiAKPiA+IFVzaW5nIGEgdGVtcG9yYXJ5IHJhbmdlIGlzIHRoZSBwYXR0ZXJu IGZyb20gbm91dmVhdSwgaXMgaXQgcmVhbGx5Cj4gPiBuZWNlc3NhcnkgaW4gdGhpcyBkcml2ZXI/ Cj4gCj4gSnVzdCB0byBjb21tZW50IG9uIHRoaXMsIGZvciBHUFUgdGhlIHVzYWdlIG1vZGVsIGlz IG5vdCBhcHBsaWNhdGlvbgo+IHJlZ2lzdGVyIHJhbmdlIG9mIHZpcnR1YWwgYWRkcmVzcyBpdCB3 YW50cyB0byB1c2UuIEl0IGlzIEdQVSBjYW4KPiBhY2Nlc3MgX2FueV8gQ1BVIHZhbGlkIGFkZHJl c3MganVzdCBsaWtlIHRoZSBDUFUgd291bGQgKG1vZHVsbyBtbWFwCj4gb2YgZGV2aWNlIGZpbGUp Lgo+IAo+IFRoaXMgaXMgYmVjYXVzZSB0aGUgQVBJIHlvdSB3YW50IGluIHVzZXJzcGFjZSBpcyBh cHBsaWNhdGlvbiBwYXNzaW5nCj4gcmFuZG9tIHBvaW50ZXIgdG8gdGhlIEdQVSBhbmQgR1BVIGJl aW5nIGFibGUgdG8gY2hhc2UgZG93biBhbnkga2luZAo+IG9mIHJhbmRvbSBwb2ludGVyIGNoYWlu IChhc3N1bWluZyBhbGwgdmFsaWQgaWUgcG9pbnRpbmcgdG8gdmFsaWQKPiB2aXJ0dWFsIGFkZHJl c3MgZm9yIHRoZSBwcm9jZXNzKS4KPiAKPiBUaGlzIGlzIHVubGlrZSB0aGUgUkRNQSBjYXNlLgoK Tm8sIFJETUEgaGFzIHRoZSBmdWxsIGFkZHJlc3Mgc3BhY2Ugb3B0aW9uIGFzIHdlbGwsIGl0IGlz IGNhbGxlZAonaW1wbGljaXQgT0RQJwoKVGhpcyBpcyBpbXBsZW1lbnRlZCBieSByZWdpc3Rlcmlu ZyByYW5nZXMgYXQgYSBsZXZlbCBpbiBvdXIgcGFnZQp0YWJsZSAoY3VycmVudGx5IDUxMkcpIHdo ZW5ldmVyIHRoYXQgbGV2ZWwgaGFzIHBvcHVsYXRlZCBwYWdlcyBiZWxvdwppdC4KCkkgdGhpbmsg aXMgYSBiZXR0ZXIgc3RyYXRlZ3kgdGhhbiB0ZW1wb3JhcnkgcmFuZ2VzLgoKQnV0IG90aGVyIEdQ VSBkcml2ZXJzIGxpa2UgQU1EIGFyZSB1c2luZyBCTyBhbmQgVFRNIG9iamVjdHMgd2l0aCBmaXhl ZApWQSByYW5nZXMgYW5kIHRoZSByYW5nZSBpcyB0aWVkIHRvIHRoZSBCTy9UVE0uCgpJJ20gbm90 IHN1cmUgaWYgdGhpcyBpOTE1IHVzYWdlIGlzIGNsb3NlciB0byBBTUQgb3IgY2xvc2VyIHRvIG5v dXZlYXUuCgpKYXNvbgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5v cmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2 ZWw=