Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On Wed, Apr 25, 2018 at 08:12:08AM +0200, Juergen Gross wrote: > On 24/04/18 22:35, Dongwon Kim wrote: > > Had a meeting with Daniel and talked about bringing out generic > > part of hyper-dmabuf to the userspace, which means we most likely > > reuse IOCTLs defined in xen-zcopy for our use-case if

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 04/25/2018 08:16 PM, Dongwon Kim wrote: On Wed, Apr 25, 2018 at 08:34:55AM +0200, Daniel Vetter wrote: On Wed, Apr 25, 2018 at 09:07:07AM +0300, Oleksandr Andrushchenko wrote: On 04/24/2018 11:35 PM, Dongwon Kim wrote: Had a meeting with Daniel and talked about bringing out generic part of

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On Wed, Apr 25, 2018 at 08:34:55AM +0200, Daniel Vetter wrote: > On Wed, Apr 25, 2018 at 09:07:07AM +0300, Oleksandr Andrushchenko wrote: > > On 04/24/2018 11:35 PM, Dongwon Kim wrote: > > > Had a meeting with Daniel and talked about bringing out generic > > > part of hyper-dmabuf to the

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On Wed, Apr 25, 2018 at 09:07:07AM +0300, Oleksandr Andrushchenko wrote: > On 04/24/2018 11:35 PM, Dongwon Kim wrote: > > Had a meeting with Daniel and talked about bringing out generic > > part of hyper-dmabuf to the userspace, which means we most likely > > reuse IOCTLs defined in xen-zcopy for

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 04/24/2018 11:35 PM, Dongwon Kim wrote: Had a meeting with Daniel and talked about bringing out generic part of hyper-dmabuf to the userspace, which means we most likely reuse IOCTLs defined in xen-zcopy for our use-case if we follow his suggestion. I will still have kernel side API, so

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

Had a meeting with Daniel and talked about bringing out generic part of hyper-dmabuf to the userspace, which means we most likely reuse IOCTLs defined in xen-zcopy for our use-case if we follow his suggestion. So assuming we use these IOCTLs as they are, Several things I would like you to

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 04/24/2018 02:54 PM, Daniel Vetter wrote: On Mon, Apr 23, 2018 at 03:10:35PM +0300, Oleksandr Andrushchenko wrote: On 04/23/2018 02:52 PM, Wei Liu wrote: On Fri, Apr 20, 2018 at 02:25:20PM +0300, Oleksandr Andrushchenko wrote: the gntdev. I think this is generic enough that it could

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On Mon, Apr 23, 2018 at 03:10:35PM +0300, Oleksandr Andrushchenko wrote: > On 04/23/2018 02:52 PM, Wei Liu wrote: > > On Fri, Apr 20, 2018 at 02:25:20PM +0300, Oleksandr Andrushchenko wrote: > > > > > the gntdev. > > > > > > > > > > I think this is generic enough that it could be implemented

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 24/04/18 12:14, Oleksandr Andrushchenko wrote: > On 04/24/2018 01:01 PM, Wei Liu wrote: >> On Tue, Apr 24, 2018 at 11:08:41AM +0200, Juergen Gross wrote: >>> On 24/04/18 11:03, Oleksandr Andrushchenko wrote: On 04/24/2018 11:40 AM, Juergen Gross wrote: > On 24/04/18 10:07, Oleksandr

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 04/24/2018 01:01 PM, Wei Liu wrote: On Tue, Apr 24, 2018 at 11:08:41AM +0200, Juergen Gross wrote: On 24/04/18 11:03, Oleksandr Andrushchenko wrote: On 04/24/2018 11:40 AM, Juergen Gross wrote: On 24/04/18 10:07, Oleksandr Andrushchenko wrote: On 04/24/2018 10:51 AM, Juergen Gross wrote:

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On Tue, Apr 24, 2018 at 11:08:41AM +0200, Juergen Gross wrote: > On 24/04/18 11:03, Oleksandr Andrushchenko wrote: > > On 04/24/2018 11:40 AM, Juergen Gross wrote: > >> On 24/04/18 10:07, Oleksandr Andrushchenko wrote: > >>> On 04/24/2018 10:51 AM, Juergen Gross wrote: > On 24/04/18 07:43,

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 04/24/2018 12:08 PM, Juergen Gross wrote: On 24/04/18 11:03, Oleksandr Andrushchenko wrote: On 04/24/2018 11:40 AM, Juergen Gross wrote: On 24/04/18 10:07, Oleksandr Andrushchenko wrote: On 04/24/2018 10:51 AM, Juergen Gross wrote: On 24/04/18 07:43, Oleksandr Andrushchenko wrote: On

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 24/04/18 11:03, Oleksandr Andrushchenko wrote: > On 04/24/2018 11:40 AM, Juergen Gross wrote: >> On 24/04/18 10:07, Oleksandr Andrushchenko wrote: >>> On 04/24/2018 10:51 AM, Juergen Gross wrote: On 24/04/18 07:43, Oleksandr Andrushchenko wrote: > On 04/24/2018 01:41 AM, Boris

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 04/24/2018 11:40 AM, Juergen Gross wrote: On 24/04/18 10:07, Oleksandr Andrushchenko wrote: On 04/24/2018 10:51 AM, Juergen Gross wrote: On 24/04/18 07:43, Oleksandr Andrushchenko wrote: On 04/24/2018 01:41 AM, Boris Ostrovsky wrote: On 04/23/2018 08:10 AM, Oleksandr Andrushchenko wrote:

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 24/04/18 10:07, Oleksandr Andrushchenko wrote: > On 04/24/2018 10:51 AM, Juergen Gross wrote: >> On 24/04/18 07:43, Oleksandr Andrushchenko wrote: >>> On 04/24/2018 01:41 AM, Boris Ostrovsky wrote: On 04/23/2018 08:10 AM, Oleksandr Andrushchenko wrote: > On 04/23/2018 02:52 PM, Wei Liu

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 04/24/2018 10:51 AM, Juergen Gross wrote: On 24/04/18 07:43, Oleksandr Andrushchenko wrote: On 04/24/2018 01:41 AM, Boris Ostrovsky wrote: On 04/23/2018 08:10 AM, Oleksandr Andrushchenko wrote: On 04/23/2018 02:52 PM, Wei Liu wrote: On Fri, Apr 20, 2018 at 02:25:20PM +0300, Oleksandr

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 24/04/18 07:43, Oleksandr Andrushchenko wrote: > On 04/24/2018 01:41 AM, Boris Ostrovsky wrote: >> On 04/23/2018 08:10 AM, Oleksandr Andrushchenko wrote: >>> On 04/23/2018 02:52 PM, Wei Liu wrote: On Fri, Apr 20, 2018 at 02:25:20PM +0300, Oleksandr Andrushchenko wrote: >>>  

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 04/24/2018 01:41 AM, Boris Ostrovsky wrote: On 04/23/2018 08:10 AM, Oleksandr Andrushchenko wrote: On 04/23/2018 02:52 PM, Wei Liu wrote: On Fri, Apr 20, 2018 at 02:25:20PM +0300, Oleksandr Andrushchenko wrote: the gntdev. I think this is generic enough that it could be implemented

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 04/23/2018 08:10 AM, Oleksandr Andrushchenko wrote: > On 04/23/2018 02:52 PM, Wei Liu wrote: >> On Fri, Apr 20, 2018 at 02:25:20PM +0300, Oleksandr Andrushchenko wrote: > the gntdev. > > I think this is generic enough that it could be implemented by a > device not tied to

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 04/23/2018 02:52 PM, Wei Liu wrote: On Fri, Apr 20, 2018 at 02:25:20PM +0300, Oleksandr Andrushchenko wrote: the gntdev. I think this is generic enough that it could be implemented by a device not tied to Xen. AFAICT the hyper_dma guys also wanted something similar to this. You can't

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On Fri, Apr 20, 2018 at 02:25:20PM +0300, Oleksandr Andrushchenko wrote: > > > the gntdev. > > > > > > I think this is generic enough that it could be implemented by a > > > device not tied to Xen. AFAICT the hyper_dma guys also wanted > > > something similar to this. > > You can't just wrap

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 04/20/2018 10:19 AM, Daniel Vetter wrote: On Wed, Apr 18, 2018 at 11:10:58AM +0100, Roger Pau Monné wrote: On Wed, Apr 18, 2018 at 11:01:12AM +0300, Oleksandr Andrushchenko wrote: On 04/18/2018 10:35 AM, Roger Pau Monné wrote: On Wed, Apr 18, 2018 at 09:38:39AM +0300, Oleksandr

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

>; xen-devel@lists.xenproject.org; > > > > daniel.vet...@intel.com; boris.ostrov...@oracle.com; Matt Roper > > > > <matthew.d.ro...@intel.com> > > > > Subject: Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy > > > > helper DRM drive

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On Wed, Apr 18, 2018 at 11:10:58AM +0100, Roger Pau Monné wrote: > On Wed, Apr 18, 2018 at 11:01:12AM +0300, Oleksandr Andrushchenko wrote: > > On 04/18/2018 10:35 AM, Roger Pau Monné wrote: > > > On Wed, Apr 18, 2018 at 09:38:39AM +0300, Oleksandr Andrushchenko wrote: > > > > On 04/17/2018 11:57

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On Thu, Apr 19, 2018 at 11:14:02AM +0300, Oleksandr Andrushchenko wrote: > On 04/18/2018 08:01 PM, Dongwon Kim wrote: > >On Wed, Apr 18, 2018 at 09:38:39AM +0300, Oleksandr Andrushchenko wrote: > >>On 04/17/2018 11:57 PM, Dongwon Kim wrote: > >>>On Tue, Apr 17, 2018 at 09:59:28AM +0200, Daniel

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

ubject: Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver On Wed, Apr 18, 2018 at 11:01:12AM +0300, Oleksandr Andrushchenko wrote: On 04/18/2018 10:35 AM, Roger Pau Monné wrote: After speaking with Oleksandr on IRC, I think the main usage of the gntdev extension is

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 04/18/2018 08:01 PM, Dongwon Kim wrote: On Wed, Apr 18, 2018 at 09:38:39AM +0300, Oleksandr Andrushchenko wrote: On 04/17/2018 11:57 PM, Dongwon Kim wrote: On Tue, Apr 17, 2018 at 09:59:28AM +0200, Daniel Vetter wrote: On Mon, Apr 16, 2018 at 12:29:05PM -0700, Dongwon Kim wrote: Yeah, I

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On Wed, Apr 18, 2018 at 09:38:39AM +0300, Oleksandr Andrushchenko wrote: > On 04/17/2018 11:57 PM, Dongwon Kim wrote: > >On Tue, Apr 17, 2018 at 09:59:28AM +0200, Daniel Vetter wrote: > >>On Mon, Apr 16, 2018 at 12:29:05PM -0700, Dongwon Kim wrote: > >>>Yeah, I definitely agree on the idea of

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

Potrola, MateuszX <mateuszx.potr...@intel.com>; xen-devel@lists.xenproject.org; daniel.vet...@intel.com; boris.ostrov...@oracle.com; Matt Roper <matthew.d.ro...@intel.com> Subject: Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver On Wed, Apr 18, 2018

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

he...@epam.com; linux-ker...@vger.kernel.org; dri- > > > de...@lists.freedesktop.org; Potrola, MateuszX > > > <mateuszx.potr...@intel.com>; xen-devel@lists.xenproject.org; > > > daniel.vet...@intel.com; boris.ostrov...@oracle.com; Matt Roper > > > <matthew.d.ro.

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

.@oracle.com; Matt Roper <matthew.d.ro...@intel.com> Subject: Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver On Wed, Apr 18, 2018 at 11:01:12AM +0300, Oleksandr Andrushchenko wrote: On 04/18/2018 10:35 AM, Roger Pau Monné wrote: On Wed, Apr 18, 2018

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

trov...@oracle.com; Matt Roper <matthew.d.ro...@intel.com> Subject: Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver On 04/18/2018 01:18 PM, Paul Durrant wrote: -Original Message- From: Xen-devel [mailto:xen-devel-boun...@lists.xenproject.org] On Behal

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

tel.com; boris.ostrov...@oracle.com; Matt Roper > <matthew.d.ro...@intel.com> > Subject: Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy > helper DRM driver > > On 04/18/2018 01:18 PM, Paul Durrant wrote: > >> -Original Message- > >> From: Xen-d

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

.@oracle.com; Matt Roper <matthew.d.ro...@intel.com> Subject: Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver On Wed, Apr 18, 2018 at 11:01:12AM +0300, Oleksandr Andrushchenko wrote: On 04/18/2018 10:35 AM, Roger Pau Monné wrote: On Wed, Apr 18, 2018

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

m; boris.ostrov...@oracle.com; Matt Roper > <matthew.d.ro...@intel.com> > Subject: Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy > helper DRM driver > > On Wed, Apr 18, 2018 at 11:01:12AM +0300, Oleksandr Andrushchenko > wrote: > > On 04/18/2018 10:

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On Wed, Apr 18, 2018 at 11:01:12AM +0300, Oleksandr Andrushchenko wrote: > On 04/18/2018 10:35 AM, Roger Pau Monné wrote: > > On Wed, Apr 18, 2018 at 09:38:39AM +0300, Oleksandr Andrushchenko wrote: > > > On 04/17/2018 11:57 PM, Dongwon Kim wrote: > > > > On Tue, Apr 17, 2018 at 09:59:28AM +0200,

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 04/18/2018 10:35 AM, Roger Pau Monné wrote: On Wed, Apr 18, 2018 at 09:38:39AM +0300, Oleksandr Andrushchenko wrote: On 04/17/2018 11:57 PM, Dongwon Kim wrote: On Tue, Apr 17, 2018 at 09:59:28AM +0200, Daniel Vetter wrote: On Mon, Apr 16, 2018 at 12:29:05PM -0700, Dongwon Kim wrote: 3.2

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On Wed, Apr 18, 2018 at 09:38:39AM +0300, Oleksandr Andrushchenko wrote: > On 04/17/2018 11:57 PM, Dongwon Kim wrote: > > On Tue, Apr 17, 2018 at 09:59:28AM +0200, Daniel Vetter wrote: > > > On Mon, Apr 16, 2018 at 12:29:05PM -0700, Dongwon Kim wrote: > 3.2 Backend exports dma-buf to xen-front >

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 04/17/2018 11:57 PM, Dongwon Kim wrote: On Tue, Apr 17, 2018 at 09:59:28AM +0200, Daniel Vetter wrote: On Mon, Apr 16, 2018 at 12:29:05PM -0700, Dongwon Kim wrote: Yeah, I definitely agree on the idea of expanding the use case to the general domain where dmabuf sharing is used. However,

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On Tue, Apr 17, 2018 at 09:59:28AM +0200, Daniel Vetter wrote: > On Mon, Apr 16, 2018 at 12:29:05PM -0700, Dongwon Kim wrote: > > Yeah, I definitely agree on the idea of expanding the use case to the > > general domain where dmabuf sharing is used. However, what you are > > targetting with

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On 04/17/2018 10:59 AM, Daniel Vetter wrote: On Mon, Apr 16, 2018 at 12:29:05PM -0700, Dongwon Kim wrote: Yeah, I definitely agree on the idea of expanding the use case to the general domain where dmabuf sharing is used. However, what you are targetting with proposed changes is identical to the

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

On Mon, Apr 16, 2018 at 12:29:05PM -0700, Dongwon Kim wrote: > Yeah, I definitely agree on the idea of expanding the use case to the > general domain where dmabuf sharing is used. However, what you are > targetting with proposed changes is identical to the core design of > hyper_dmabuf. > > On

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

Yeah, I definitely agree on the idea of expanding the use case to the general domain where dmabuf sharing is used. However, what you are targetting with proposed changes is identical to the core design of hyper_dmabuf. On top of this basic functionalities, hyper_dmabuf has driver level

Re: [Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

Hello, all! After discussing xen-zcopy and hyper-dmabuf [1] approaches it seems that xen-zcopy can be made not depend on DRM core any more and be dma-buf centric (which it in fact is). The DRM code was mostly there for dma-buf's FD import/export with DRM PRIME UAPI and with DRM use-cases in

[Xen-devel] [PATCH 0/1] drm/xen-zcopy: Add Xen zero-copy helper DRM driver

From: Oleksandr Andrushchenko Hello! When using Xen PV DRM frontend driver then on backend side one will need to do copying of display buffers' contents (filled by the frontend's user-space) into buffers allocated at the backend side. Taking into account the