From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oleksandr Andrushchenko Subject: Re: [Xen-devel] [PATCH 1/9] drm/xen-front: Introduce Xen para-virtualized frontend driver Date: Wed, 21 Feb 2018 11:42:23 +0200 Message-ID: <8caebdda-47ac-a1d8-73d2-7b889c997a5a@gmail.com> References: <1519200222-20623-1-git-send-email-andr2000@gmail.com> <1519200222-20623-2-git-send-email-andr2000@gmail.com> <20180221091751.ebczu3kzv6j7zykp@MacBook-Pro-de-Roger.local> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mail-lf0-x242.google.com (mail-lf0-x242.google.com [IPv6:2a00:1450:4010:c07::242]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7CC566E58B for ; Wed, 21 Feb 2018 09:42:27 +0000 (UTC) Received: by mail-lf0-x242.google.com with SMTP id y19so1440933lfd.4 for ; Wed, 21 Feb 2018 01:42:27 -0800 (PST) In-Reply-To: <20180221091751.ebczu3kzv6j7zykp@MacBook-Pro-de-Roger.local> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= Cc: jgross@suse.com, konrad.wilk@oracle.com, airlied@linux.ie, Oleksandr Andrushchenko , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, daniel.vetter@intel.com, xen-devel@lists.xenproject.org, boris.ostrovsky@oracle.com List-Id: dri-devel@lists.freedesktop.org T24gMDIvMjEvMjAxOCAxMToxNyBBTSwgUm9nZXIgUGF1IE1vbm7DqSB3cm90ZToKPiBPbiBXZWQs IEZlYiAyMSwgMjAxOCBhdCAxMDowMzozNEFNICswMjAwLCBPbGVrc2FuZHIgQW5kcnVzaGNoZW5r byB3cm90ZToKPj4gRnJvbTogT2xla3NhbmRyIEFuZHJ1c2hjaGVua28gPG9sZWtzYW5kcl9hbmRy dXNoY2hlbmtvQGVwYW0uY29tPgo+Pgo+PiBJbnRyb2R1Y2Ugc2tlbGV0b24gb2YgdGhlIHBhcmEt dmlydHVhbGl6ZWQgWGVuIGRpc3BsYXkKPj4gZnJvbnRlbmQgZHJpdmVyLiBUaGlzIHBhdGNoIG9u bHkgYWRkcyByZXF1aXJlZAo+PiBlc3NlbnRpYWwgc3R1YnMuCj4+Cj4+IFNpZ25lZC1vZmYtYnk6 IE9sZWtzYW5kciBBbmRydXNoY2hlbmtvIDxvbGVrc2FuZHJfYW5kcnVzaGNoZW5rb0BlcGFtLmNv bT4KPj4gLS0tCj4+ICAgZHJpdmVycy9ncHUvZHJtL0tjb25maWcgICAgICAgICAgICAgfCAgMiAr Cj4+ICAgZHJpdmVycy9ncHUvZHJtL01ha2VmaWxlICAgICAgICAgICAgfCAgMSArCj4+ICAgZHJp dmVycy9ncHUvZHJtL3hlbi9LY29uZmlnICAgICAgICAgfCAxNyArKysrKysrKwo+PiAgIGRyaXZl cnMvZ3B1L2RybS94ZW4vTWFrZWZpbGUgICAgICAgIHwgIDUgKysrCj4+ICAgZHJpdmVycy9ncHUv ZHJtL3hlbi94ZW5fZHJtX2Zyb250LmMgfCA4MyArKysrKysrKysrKysrKysrKysrKysrKysrKysr KysrKysrKysrCj4+ICAgNSBmaWxlcyBjaGFuZ2VkLCAxMDggaW5zZXJ0aW9ucygrKQo+PiAgIGNy ZWF0ZSBtb2RlIDEwMDY0NCBkcml2ZXJzL2dwdS9kcm0veGVuL0tjb25maWcKPj4gICBjcmVhdGUg bW9kZSAxMDA2NDQgZHJpdmVycy9ncHUvZHJtL3hlbi9NYWtlZmlsZQo+PiAgIGNyZWF0ZSBtb2Rl IDEwMDY0NCBkcml2ZXJzL2dwdS9kcm0veGVuL3hlbl9kcm1fZnJvbnQuYwo+Pgo+PiBkaWZmIC0t Z2l0IGEvZHJpdmVycy9ncHUvZHJtL0tjb25maWcgYi9kcml2ZXJzL2dwdS9kcm0vS2NvbmZpZwo+ PiBpbmRleCBkZWVlZmE3YTE3NzMuLjc1NzgyNWFjNjBkZiAxMDA2NDQKPj4gLS0tIGEvZHJpdmVy cy9ncHUvZHJtL0tjb25maWcKPj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL0tjb25maWcKPj4gQEAg LTI4OSw2ICsyODksOCBAQCBzb3VyY2UgImRyaXZlcnMvZ3B1L2RybS9wbDExMS9LY29uZmlnIgo+ PiAgIAo+PiAgIHNvdXJjZSAiZHJpdmVycy9ncHUvZHJtL3R2ZTIwMC9LY29uZmlnIgo+PiAgIAo+ PiArc291cmNlICJkcml2ZXJzL2dwdS9kcm0veGVuL0tjb25maWciCj4+ICsKPj4gICAjIEtlZXAg bGVnYWN5IGRyaXZlcnMgbGFzdAo+PiAgIAo+PiAgIG1lbnVjb25maWcgRFJNX0xFR0FDWQo+PiBk aWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL01ha2VmaWxlIGIvZHJpdmVycy9ncHUvZHJtL01h a2VmaWxlCj4+IGluZGV4IDUwMDkzZmY0NDc5Yi4uOWQ2NjY1N2VhMTE3IDEwMDY0NAo+PiAtLS0g YS9kcml2ZXJzL2dwdS9kcm0vTWFrZWZpbGUKPj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL01ha2Vm aWxlCj4+IEBAIC0xMDMsMyArMTAzLDQgQEAgb2JqLSQoQ09ORklHX0RSTV9NWFNGQikJKz0gbXhz ZmIvCj4+ICAgb2JqLSQoQ09ORklHX0RSTV9USU5ZRFJNKSArPSB0aW55ZHJtLwo+PiAgIG9iai0k KENPTkZJR19EUk1fUEwxMTEpICs9IHBsMTExLwo+PiAgIG9iai0kKENPTkZJR19EUk1fVFZFMjAw KSArPSB0dmUyMDAvCj4+ICtvYmotJChDT05GSUdfRFJNX1hFTikgKz0geGVuLwo+PiBkaWZmIC0t Z2l0IGEvZHJpdmVycy9ncHUvZHJtL3hlbi9LY29uZmlnIGIvZHJpdmVycy9ncHUvZHJtL3hlbi9L Y29uZmlnCj4+IG5ldyBmaWxlIG1vZGUgMTAwNjQ0Cj4+IGluZGV4IDAwMDAwMDAwMDAwMC4uNGNj YTE2MDc4MmFiCj4+IC0tLSAvZGV2L251bGwKPj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL3hlbi9L Y29uZmlnCj4+IEBAIC0wLDAgKzEsMTcgQEAKPj4gK2NvbmZpZyBEUk1fWEVOCj4+ICsJYm9vbCAi RFJNIFN1cHBvcnQgZm9yIFhlbiBndWVzdCBPUyIKPj4gKwlkZXBlbmRzIG9uIFhFTgo+PiArCWhl bHAKPj4gKwkgIENob29zZSB0aGlzIG9wdGlvbiBpZiB5b3Ugd2FudCB0byBlbmFibGUgRFJNIHN1 cHBvcnQKPj4gKwkgIGZvciBYZW4uCj4+ICsKPj4gK2NvbmZpZyBEUk1fWEVOX0ZST05URU5ECj4+ ICsJdHJpc3RhdGUgIlBhcmEtdmlydHVhbGl6ZWQgZnJvbnRlbmQgZHJpdmVyIGZvciBYZW4gZ3Vl c3QgT1MiCj4+ICsJZGVwZW5kcyBvbiBEUk1fWEVOCj4+ICsJZGVwZW5kcyBvbiBEUk0KPj4gKwlz ZWxlY3QgRFJNX0tNU19IRUxQRVIKPj4gKwlzZWxlY3QgVklERU9NT0RFX0hFTFBFUlMKPj4gKwlz ZWxlY3QgWEVOX1hFTkJVU19GUk9OVEVORAo+PiArCWhlbHAKPj4gKwkgIENob29zZSB0aGlzIG9w dGlvbiBpZiB5b3Ugd2FudCB0byBlbmFibGUgYSBwYXJhLXZpcnR1YWxpemVkCj4+ICsJICBmcm9u dGVuZCBEUk0vS01TIGRyaXZlciBmb3IgWGVuIGd1ZXN0IE9TZXMuCj4+IGRpZmYgLS1naXQgYS9k cml2ZXJzL2dwdS9kcm0veGVuL01ha2VmaWxlIGIvZHJpdmVycy9ncHUvZHJtL3hlbi9NYWtlZmls ZQo+PiBuZXcgZmlsZSBtb2RlIDEwMDY0NAo+PiBpbmRleCAwMDAwMDAwMDAwMDAuLjk2NzA3NGQz NDhmNgo+PiAtLS0gL2Rldi9udWxsCj4+ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS94ZW4vTWFrZWZp bGUKPj4gQEAgLTAsMCArMSw1IEBACj4+ICsjIFNQRFgtTGljZW5zZS1JZGVudGlmaWVyOiBHUEwt Mi4wCj4+ICsKPj4gK2RybV94ZW5fZnJvbnQtb2JqcyA6PSB4ZW5fZHJtX2Zyb250Lm8KPj4gKwo+ PiArb2JqLSQoQ09ORklHX0RSTV9YRU5fRlJPTlRFTkQpICs9IGRybV94ZW5fZnJvbnQubwo+PiBk aWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL3hlbi94ZW5fZHJtX2Zyb250LmMgYi9kcml2ZXJz L2dwdS9kcm0veGVuL3hlbl9kcm1fZnJvbnQuYwo+PiBuZXcgZmlsZSBtb2RlIDEwMDY0NAo+PiBp bmRleCAwMDAwMDAwMDAwMDAuLmZkMzcyZmI0NjRhMQo+PiAtLS0gL2Rldi9udWxsCj4+ICsrKyBi L2RyaXZlcnMvZ3B1L2RybS94ZW4veGVuX2RybV9mcm9udC5jCj4+IEBAIC0wLDAgKzEsODMgQEAK Pj4gKy8qCj4+ICsgKiAgWGVuIHBhcmEtdmlydHVhbCBEUk0gZGV2aWNlCj4+ICsgKgo+PiArICog ICBUaGlzIHByb2dyYW0gaXMgZnJlZSBzb2Z0d2FyZTsgeW91IGNhbiByZWRpc3RyaWJ1dGUgaXQg YW5kL29yIG1vZGlmeQo+PiArICogICBpdCB1bmRlciB0aGUgdGVybXMgb2YgdGhlIEdOVSBHZW5l cmFsIFB1YmxpYyBMaWNlbnNlIGFzIHB1Ymxpc2hlZCBieQo+PiArICogICB0aGUgRnJlZSBTb2Z0 d2FyZSBGb3VuZGF0aW9uOyBlaXRoZXIgdmVyc2lvbiAyIG9mIHRoZSBMaWNlbnNlLCBvcgo+PiAr ICogICAoYXQgeW91ciBvcHRpb24pIGFueSBsYXRlciB2ZXJzaW9uLgo+PiArICoKPj4gKyAqICAg VGhpcyBwcm9ncmFtIGlzIGRpc3RyaWJ1dGVkIGluIHRoZSBob3BlIHRoYXQgaXQgd2lsbCBiZSB1 c2VmdWwsCj4+ICsgKiAgIGJ1dCBXSVRIT1VUIEFOWSBXQVJSQU5UWTsgd2l0aG91dCBldmVuIHRo ZSBpbXBsaWVkIHdhcnJhbnR5IG9mCj4+ICsgKiAgIE1FUkNIQU5UQUJJTElUWSBvciBGSVRORVNT IEZPUiBBIFBBUlRJQ1VMQVIgUFVSUE9TRS4gIFNlZSB0aGUKPj4gKyAqICAgR05VIEdlbmVyYWwg UHVibGljIExpY2Vuc2UgZm9yIG1vcmUgZGV0YWlscy4KPiBNb3N0IFhlbiBkcml2ZXJzIGluIExp bnV4IHVzZSBhIGR1YWwgR1BML0JTRCBsaWNlbnNlLCBzbyB0aGF0IHRoZXkgY2FuCj4gYmUgaW1w b3J0ZWQgaW50byBvdGhlciBub24gR1BMIE9TZXM6Cj4KPiBUaGlzIHByb2dyYW0gaXMgZnJlZSBz b2Z0d2FyZTsgeW91IGNhbiByZWRpc3RyaWJ1dGUgaXQgYW5kL29yCj4gbW9kaWZ5IGl0IHVuZGVy IHRoZSB0ZXJtcyBvZiB0aGUgR05VIEdlbmVyYWwgUHVibGljIExpY2Vuc2UgdmVyc2lvbiAyCj4g YXMgcHVibGlzaGVkIGJ5IHRoZSBGcmVlIFNvZnR3YXJlIEZvdW5kYXRpb247IG9yLCB3aGVuIGRp c3RyaWJ1dGVkCj4gc2VwYXJhdGVseSBmcm9tIHRoZSBMaW51eCBrZXJuZWwgb3IgaW5jb3Jwb3Jh dGVkIGludG8gb3RoZXIKPiBzb2Z0d2FyZSBwYWNrYWdlcywgc3ViamVjdCB0byB0aGUgZm9sbG93 aW5nIGxpY2Vuc2U6Cj4KPiBQZXJtaXNzaW9uIGlzIGhlcmVieSBncmFudGVkLCBmcmVlIG9mIGNo YXJnZSwgdG8gYW55IHBlcnNvbiBvYnRhaW5pbmcgYSBjb3B5Cj4gb2YgdGhpcyBzb3VyY2UgZmls ZSAodGhlICJTb2Z0d2FyZSIpLCB0byBkZWFsIGluIHRoZSBTb2Z0d2FyZSB3aXRob3V0Cj4gcmVz dHJpY3Rpb24sIGluY2x1ZGluZyB3aXRob3V0IGxpbWl0YXRpb24gdGhlIHJpZ2h0cyB0byB1c2Us IGNvcHksIG1vZGlmeSwKPiBtZXJnZSwgcHVibGlzaCwgZGlzdHJpYnV0ZSwgc3VibGljZW5zZSwg YW5kL29yIHNlbGwgY29waWVzIG9mIHRoZSBTb2Z0d2FyZSwKPiBhbmQgdG8gcGVybWl0IHBlcnNv bnMgdG8gd2hvbSB0aGUgU29mdHdhcmUgaXMgZnVybmlzaGVkIHRvIGRvIHNvLCBzdWJqZWN0IHRv Cj4gdGhlIGZvbGxvd2luZyBjb25kaXRpb25zOgo+Cj4gVGhlIGFib3ZlIGNvcHlyaWdodCBub3Rp Y2UgYW5kIHRoaXMgcGVybWlzc2lvbiBub3RpY2Ugc2hhbGwgYmUgaW5jbHVkZWQgaW4KPiBhbGwg Y29waWVzIG9yIHN1YnN0YW50aWFsIHBvcnRpb25zIG9mIHRoZSBTb2Z0d2FyZS4KPgo+IFRIRSBT T0ZUV0FSRSBJUyBQUk9WSURFRCAiQVMgSVMiLCBXSVRIT1VUIFdBUlJBTlRZIE9GIEFOWSBLSU5E LCBFWFBSRVNTIE9SCj4gSU1QTElFRCwgSU5DTFVESU5HIEJVVCBOT1QgTElNSVRFRCBUTyBUSEUg V0FSUkFOVElFUyBPRiBNRVJDSEFOVEFCSUxJVFksCj4gRklUTkVTUyBGT1IgQSBQQVJUSUNVTEFS IFBVUlBPU0UgQU5EIE5PTklORlJJTkdFTUVOVC4gSU4gTk8gRVZFTlQgU0hBTEwgVEhFCj4gQVVU SE9SUyBPUiBDT1BZUklHSFQgSE9MREVSUyBCRSBMSUFCTEUgRk9SIEFOWSBDTEFJTSwgREFNQUdF UyBPUiBPVEhFUgo+IExJQUJJTElUWSwgV0hFVEhFUiBJTiBBTiBBQ1RJT04gT0YgQ09OVFJBQ1Qs IFRPUlQgT1IgT1RIRVJXSVNFLCBBUklTSU5HCj4gRlJPTSwgT1VUIE9GIE9SIElOIENPTk5FQ1RJ T04gV0lUSCBUSEUgU09GVFdBUkUgT1IgVEhFIFVTRSBPUiBPVEhFUiBERUFMSU5HUwo+IElOIFRI RSBTT0ZUV0FSRS4KPgo+IElNTyBpdCB3b3VsZCBiZSBnb29kIHRvIHJlbGVhc2UgdGhpcyBkcml2 ZXIgdW5kZXIgdGhlIHNhbWUgbGljZW5zZSwgc28KPiBpdCBjYW4gYmUgaW5jb3Jwb3JhdGVkIGlu dG8gb3RoZXIgT1Nlcy4KSSBhbSBpbiBhbnkgd2F5IGV4cGVydCBpbiBsaWNlbnNpbmcsIGJ1dCB0 aGUgYWJvdmUgc2VlbXMgdG8gYmUKLyogU1BEWC1MaWNlbnNlLUlkZW50aWZpZXI6IChHUEwtMi4w IE9SIE1JVCkgKi8KQXQgbGVhc3QgdGhpcyBpcyB3aGF0IEkgc2VlIGF0IFsxXSBmb3IgTUlULgpD b3VsZCB5b3UgcGxlYXNlIHRlbGwgd2hpY2ggbGljZW5zZShzKSBhcyBsaXN0ZWQgYXQgWzFdCndv dWxkIGJlIGFwcHJvcHJpYXRlIGZvciBYZW4gZHJpdmVycyBpbiB0ZXJtcyBvZiBob3cgaXQgaXMK ZXhwZWN0ZWQgdG8gYXBwZWFyIGluIHRoZSBrZXJuZWwgY29kZSwgZS5nLiBleHBlY3RlZApTUERY LUxpY2Vuc2UtSWRlbnRpZmllcj8KPiBUaGFua3MsIFJvZ2VyLgpUaGFuayB5b3UsCk9sZWtzYW5k cgoKWzFdIGh0dHBzOi8vc3BkeC5vcmcvbGljZW5zZXMvCl9fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVs QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWls bWFuL2xpc3RpbmZvL2RyaS1kZXZlbAo= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932548AbeBUJm3 (ORCPT ); Wed, 21 Feb 2018 04:42:29 -0500 Received: from mail-lf0-f67.google.com ([209.85.215.67]:34787 "EHLO mail-lf0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752983AbeBUJm1 (ORCPT ); Wed, 21 Feb 2018 04:42:27 -0500 X-Google-Smtp-Source: AH8x225rUwrf6MhZGc98YS7qwyVLXNs4q/U9V2NDRb2tOLyqG3ublObqctEohMauN230ECI+JTlV7g== Subject: Re: [Xen-devel] [PATCH 1/9] drm/xen-front: Introduce Xen para-virtualized frontend driver To: =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= Cc: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, airlied@linux.ie, daniel.vetter@intel.com, seanpaul@chromium.org, gustavo@padovan.org, jgross@suse.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com, Oleksandr Andrushchenko References: <1519200222-20623-1-git-send-email-andr2000@gmail.com> <1519200222-20623-2-git-send-email-andr2000@gmail.com> <20180221091751.ebczu3kzv6j7zykp@MacBook-Pro-de-Roger.local> From: Oleksandr Andrushchenko Message-ID: <8caebdda-47ac-a1d8-73d2-7b889c997a5a@gmail.com> Date: Wed, 21 Feb 2018 11:42:23 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: <20180221091751.ebczu3kzv6j7zykp@MacBook-Pro-de-Roger.local> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/21/2018 11:17 AM, Roger Pau Monné wrote: > On Wed, Feb 21, 2018 at 10:03:34AM +0200, Oleksandr Andrushchenko wrote: >> From: Oleksandr Andrushchenko >> >> Introduce skeleton of the para-virtualized Xen display >> frontend driver. This patch only adds required >> essential stubs. >> >> Signed-off-by: Oleksandr Andrushchenko >> --- >> drivers/gpu/drm/Kconfig | 2 + >> drivers/gpu/drm/Makefile | 1 + >> drivers/gpu/drm/xen/Kconfig | 17 ++++++++ >> drivers/gpu/drm/xen/Makefile | 5 +++ >> drivers/gpu/drm/xen/xen_drm_front.c | 83 +++++++++++++++++++++++++++++++++++++ >> 5 files changed, 108 insertions(+) >> create mode 100644 drivers/gpu/drm/xen/Kconfig >> create mode 100644 drivers/gpu/drm/xen/Makefile >> create mode 100644 drivers/gpu/drm/xen/xen_drm_front.c >> >> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig >> index deeefa7a1773..757825ac60df 100644 >> --- a/drivers/gpu/drm/Kconfig >> +++ b/drivers/gpu/drm/Kconfig >> @@ -289,6 +289,8 @@ source "drivers/gpu/drm/pl111/Kconfig" >> >> source "drivers/gpu/drm/tve200/Kconfig" >> >> +source "drivers/gpu/drm/xen/Kconfig" >> + >> # Keep legacy drivers last >> >> menuconfig DRM_LEGACY >> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile >> index 50093ff4479b..9d66657ea117 100644 >> --- a/drivers/gpu/drm/Makefile >> +++ b/drivers/gpu/drm/Makefile >> @@ -103,3 +103,4 @@ obj-$(CONFIG_DRM_MXSFB) += mxsfb/ >> obj-$(CONFIG_DRM_TINYDRM) += tinydrm/ >> obj-$(CONFIG_DRM_PL111) += pl111/ >> obj-$(CONFIG_DRM_TVE200) += tve200/ >> +obj-$(CONFIG_DRM_XEN) += xen/ >> diff --git a/drivers/gpu/drm/xen/Kconfig b/drivers/gpu/drm/xen/Kconfig >> new file mode 100644 >> index 000000000000..4cca160782ab >> --- /dev/null >> +++ b/drivers/gpu/drm/xen/Kconfig >> @@ -0,0 +1,17 @@ >> +config DRM_XEN >> + bool "DRM Support for Xen guest OS" >> + depends on XEN >> + help >> + Choose this option if you want to enable DRM support >> + for Xen. >> + >> +config DRM_XEN_FRONTEND >> + tristate "Para-virtualized frontend driver for Xen guest OS" >> + depends on DRM_XEN >> + depends on DRM >> + select DRM_KMS_HELPER >> + select VIDEOMODE_HELPERS >> + select XEN_XENBUS_FRONTEND >> + help >> + Choose this option if you want to enable a para-virtualized >> + frontend DRM/KMS driver for Xen guest OSes. >> diff --git a/drivers/gpu/drm/xen/Makefile b/drivers/gpu/drm/xen/Makefile >> new file mode 100644 >> index 000000000000..967074d348f6 >> --- /dev/null >> +++ b/drivers/gpu/drm/xen/Makefile >> @@ -0,0 +1,5 @@ >> +# SPDX-License-Identifier: GPL-2.0 >> + >> +drm_xen_front-objs := xen_drm_front.o >> + >> +obj-$(CONFIG_DRM_XEN_FRONTEND) += drm_xen_front.o >> diff --git a/drivers/gpu/drm/xen/xen_drm_front.c b/drivers/gpu/drm/xen/xen_drm_front.c >> new file mode 100644 >> index 000000000000..fd372fb464a1 >> --- /dev/null >> +++ b/drivers/gpu/drm/xen/xen_drm_front.c >> @@ -0,0 +1,83 @@ >> +/* >> + * Xen para-virtual DRM device >> + * >> + * This program is free software; you can redistribute it and/or modify >> + * it under the terms of the GNU General Public License as published by >> + * the Free Software Foundation; either version 2 of the License, or >> + * (at your option) any later version. >> + * >> + * This program is distributed in the hope that it will be useful, >> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the >> + * GNU General Public License for more details. > Most Xen drivers in Linux use a dual GPL/BSD license, so that they can > be imported into other non GPL OSes: > > This program is free software; you can redistribute it and/or > modify it under the terms of the GNU General Public License version 2 > as published by the Free Software Foundation; or, when distributed > separately from the Linux kernel or incorporated into other > software packages, subject to the following license: > > Permission is hereby granted, free of charge, to any person obtaining a copy > of this source file (the "Software"), to deal in the Software without > restriction, including without limitation the rights to use, copy, modify, > merge, publish, distribute, sublicense, and/or sell copies of the Software, > and to permit persons to whom the Software is furnished to do so, subject to > the following conditions: > > The above copyright notice and this permission notice shall be included in > all copies or substantial portions of the Software. > > THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR > IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, > FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE > AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER > LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING > FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS > IN THE SOFTWARE. > > IMO it would be good to release this driver under the same license, so > it can be incorporated into other OSes. I am in any way expert in licensing, but the above seems to be /* SPDX-License-Identifier: (GPL-2.0 OR MIT) */ At least this is what I see at [1] for MIT. Could you please tell which license(s) as listed at [1] would be appropriate for Xen drivers in terms of how it is expected to appear in the kernel code, e.g. expected SPDX-License-Identifier? > Thanks, Roger. Thank you, Oleksandr [1] https://spdx.org/licenses/