Konrad, could you please review? So, I can send v5 with Hans'
comments addressed
Thank you,
Oleksandr
On 1/23/19 10:14 AM, Oleksandr Andrushchenko wrote:
Any comments from Xen community?
Konrad?
On 1/15/19 4:44 PM, Hans Verkuil wrote:
Hi Oleksandr,
Just two remaining comments:
On 1/
On 2/5/19 3:02 PM, Hans Verkuil wrote:
On 2/5/19 1:30 PM, Oleksandr Andrushchenko wrote:
Sorry for paying so much attention to this, but I think it is important that
this is documented precisely.
Thank you for helping with this - your comments are really
important and make the description
On 2/5/19 2:14 PM, Hans Verkuil wrote:
On 2/5/19 12:44 PM, Oleksandr Andrushchenko wrote:
On 2/5/19 12:53 PM, Hans Verkuil wrote:
On 2/5/19 11:44 AM, Oleksandr Andrushchenko wrote:
On 2/5/19 11:34 AM, Hans Verkuil wrote:
On 2/5/19 9:48 AM, Oleksandr Andrushchenko wrote:
On 1/23/19 10:14 AM
On 2/5/19 12:53 PM, Hans Verkuil wrote:
On 2/5/19 11:44 AM, Oleksandr Andrushchenko wrote:
On 2/5/19 11:34 AM, Hans Verkuil wrote:
On 2/5/19 9:48 AM, Oleksandr Andrushchenko wrote:
On 1/23/19 10:14 AM, Oleksandr Andrushchenko wrote:
Any comments from Xen community?
Konrad?
While I am still
On 2/5/19 11:34 AM, Hans Verkuil wrote:
On 2/5/19 9:48 AM, Oleksandr Andrushchenko wrote:
On 1/23/19 10:14 AM, Oleksandr Andrushchenko wrote:
Any comments from Xen community?
Konrad?
While I am still looking forward to any comments from Xen community...
On 1/15/19 4:44 PM, Hans Verkuil wrote
On 1/23/19 10:14 AM, Oleksandr Andrushchenko wrote:
Any comments from Xen community?
Konrad?
While I am still looking forward to any comments from Xen community...
On 1/15/19 4:44 PM, Hans Verkuil wrote:
Hi Oleksandr,
Just two remaining comments:
On 1/15/19 10:38 AM, Oleksandr
Konrad, could you please review?
Thank you,
Oleksandr
On 1/15/19 11:38 AM, Oleksandr Andrushchenko wrote:
> From: Oleksandr Andrushchenko
>
> Hello!
>
> At the moment Xen [1] already supports some virtual multimedia
> features [2] such as virtual display, sound. It
Any comments from Xen community?
Konrad?
On 1/15/19 4:44 PM, Hans Verkuil wrote:
> Hi Oleksandr,
>
> Just two remaining comments:
>
> On 1/15/19 10:38 AM, Oleksandr Andrushchenko wrote:
>> From: Oleksandr Andrushchenko
>>
>> This is the ABI for the two halve
On 1/15/19 4:44 PM, Hans Verkuil wrote:
> Hi Oleksandr,
Hello, Hans!
> Just two remaining comments:
>
> On 1/15/19 10:38 AM, Oleksandr Andrushchenko wrote:
>> From: Oleksandr Andrushchenko
>>
>> This is the ABI for the two halves of a para-virtualized
>> cam
From: Oleksandr Andrushchenko
Hello!
At the moment Xen [1] already supports some virtual multimedia
features [2] such as virtual display, sound. It supports keyboards,
pointers and multi-touch devices all allowing Xen to be used in
automotive appliances, In-Vehicle Infotainment (IVI) systems
From: Oleksandr Andrushchenko
This is the ABI for the two halves of a para-virtualized
camera driver which extends Xen's reach multimedia capabilities even
farther enabling it for video conferencing, In-Vehicle Infotainment,
high definition maps etc.
The initial goal is to support most n
Hello, Hans!
Could you please take a look at my answers below and kindly let me know
if we are ready for (final?) v4 from your point of view.
Konrad, Xen-devel - do you have any objections/comments on this?
Thank you,
Oleksandr
On 12/17/18 9:37 AM, Oleksandr Andrushchenko wrote:
Hello, Hans
Hello, Hans!
Thank you for reviewing, please find my answers inline
On 12/14/18 2:14 PM, Hans Verkuil wrote:
Hi Oleksandr,
This is looking a lot better than v2. I do have a few remaining comments about
some things that are a bit unclear to me.
On 12/12/18 10:49 AM, Oleksandr Andrushchenko
PFA the diff between v2 and v3 for your convenience
On 12/12/18 11:49 AM, Oleksandr Andrushchenko wrote:
From: Oleksandr Andrushchenko
This is the ABI for the two halves of a para-virtualized
camera driver which extends Xen's reach multimedia capabilities even
farther enabling it for
From: Oleksandr Andrushchenko
This is the ABI for the two halves of a para-virtualized
camera driver which extends Xen's reach multimedia capabilities even
farther enabling it for video conferencing, In-Vehicle Infotainment,
high definition maps etc.
The initial goal is to support most n
From: Oleksandr Andrushchenko
Hello!
At the moment Xen [1] already supports some virtual multimedia
features [2] such as virtual display, sound. It supports keyboards,
pointers and multi-touch devices all allowing Xen to be used in
automotive appliances, In-Vehicle Infotainment (IVI) systems
On 09/13/2018 02:46 PM, Hans Verkuil wrote:
On 09/13/18 13:29, Oleksandr Andrushchenko wrote:
Hi, all!
Is there a way in V4L2 to get number of planes from fourcc code
or specifically I need number of planes for a given pixel format
expressed as V4L2_PIX_FMT_* value.
Sadly not. It's pa
Hi, all!
Is there a way in V4L2 to get number of planes from fourcc code
or specifically I need number of planes for a given pixel format
expressed as V4L2_PIX_FMT_* value.
I know that DRM has such a helper [1], but I am not quite sure
if I can call it with V4L2_PIX_FMT_* as argument to get w
On 06/08/2018 10:21 PM, Boris Ostrovsky wrote:
On 06/08/2018 01:59 PM, Stefano Stabellini wrote:
@@ -325,6 +401,14 @@ static int map_grant_pages(struct
grant_map
*map)
map->unmap_ops[i].handle = map->map_ops[i].handle;
if (use_ptemod)
map->kunmap_o
From: Oleksandr Andrushchenko
This work is in response to my previous attempt to introduce Xen/DRM
zero-copy driver [1] to enable Linux dma-buf API [2] for Xen based
frontends/backends. There is also an existing hyper_dmabuf approach
available [3] which, if reworked to utilize the proposed
From: Oleksandr Andrushchenko
Extend grant table module API to allow allocating buffers that can
be used for DMA operations and mapping foreign grant references
on top of those.
The resulting buffer is similar to the one allocated by the balloon
driver in terms that proper memory reservation is
From: Oleksandr Andrushchenko
Make set/clear page private code shared and accessible to
other kernel modules which can re-use these instead of open-coding.
Signed-off-by: Oleksandr Andrushchenko
---
drivers/xen/grant-table.c | 54 +--
include/xen
From: Oleksandr Andrushchenko
Memory {increase|decrease}_reservation and VA mappings update/reset
code used in balloon driver can be made common, so other drivers can
also re-use the same functionality without open-coding.
Create a dedicated module for the shared code and export corresponding
From: Oleksandr Andrushchenko
Allow mappings for DMA backed buffers if grant table module
supports such: this extends grant device to not only map buffers
made of balloon pages, but also from buffers allocated with
dma_alloc_xxx.
Signed-off-by: Oleksandr Andrushchenko
---
drivers/xen
From: Oleksandr Andrushchenko
1. Create a dma-buf from grant references provided by the foreign
domain. By default dma-buf is backed by system memory pages, but
by providing GNTDEV_DMA_FLAG_XXX flags it can also be created
as a DMA write-combine/coherent buffer, e.g. allocated with
From: Oleksandr Andrushchenko
Add UAPI and IOCTLs for dma-buf grant device driver extension:
the extension allows userspace processes and kernel modules to
use Xen backed dma-buf implementation. With this extension grant
references to the pages of an imported dma-buf can be exported
for other
From: Oleksandr Andrushchenko
1. Import a dma-buf with the file descriptor provided and export
granted references to the pages of that dma-buf into the array
of grant references.
2. Add API to close all references to an imported buffer, so it can be
released by the owner. This is only
From: Oleksandr Andrushchenko
Allow creating grant device context for use by kernel modules which
require functionality, provided by gntdev. Export symbols for dma-buf
API provided by the module.
Signed-off-by: Oleksandr Andrushchenko
---
drivers/xen/gntdev.c| 116
On 05/22/2018 09:02 PM, Boris Ostrovsky wrote:
On 05/22/2018 11:00 AM, Oleksandr Andrushchenko wrote:
On 05/22/2018 05:33 PM, Boris Ostrovsky wrote:
On 05/22/2018 01:55 AM, Oleksandr Andrushchenko wrote:
On 05/21/2018 11:36 PM, Boris Ostrovsky wrote:
On 05/21/2018 03:13 PM, Oleksandr
On 05/22/2018 05:33 PM, Boris Ostrovsky wrote:
On 05/22/2018 01:55 AM, Oleksandr Andrushchenko wrote:
On 05/21/2018 11:36 PM, Boris Ostrovsky wrote:
On 05/21/2018 03:13 PM, Oleksandr Andrushchenko wrote:
On 05/21/2018 09:53 PM, Boris Ostrovsky wrote:
On 05/21/2018 01:32 PM, Oleksandr
d you change it to something
else like... "xen_"?
Np, will rename
On Thu, May 17, 2018 at 11:26:04AM +0300, Oleksandr Andrushchenko wrote:
From: Oleksandr Andrushchenko
Signed-off-by: Oleksandr Andrushchenko
---
drivers/xen/gntdev.c | 954
On 05/21/2018 11:36 PM, Boris Ostrovsky wrote:
On 05/21/2018 03:13 PM, Oleksandr Andrushchenko wrote:
On 05/21/2018 09:53 PM, Boris Ostrovsky wrote:
On 05/21/2018 01:32 PM, Oleksandr Andrushchenko wrote:
On 05/21/2018 07:35 PM, Boris Ostrovsky wrote:
On 05/21/2018 01:40 AM, Oleksandr
On 05/21/2018 09:53 PM, Boris Ostrovsky wrote:
On 05/21/2018 01:32 PM, Oleksandr Andrushchenko wrote:
On 05/21/2018 07:35 PM, Boris Ostrovsky wrote:
On 05/21/2018 01:40 AM, Oleksandr Andrushchenko wrote:
On 05/19/2018 01:04 AM, Boris Ostrovsky wrote:
On 05/17/2018 04:26 AM, Oleksandr
On 05/21/2018 07:35 PM, Boris Ostrovsky wrote:
On 05/21/2018 01:40 AM, Oleksandr Andrushchenko wrote:
On 05/19/2018 01:04 AM, Boris Ostrovsky wrote:
On 05/17/2018 04:26 AM, Oleksandr Andrushchenko wrote:
From: Oleksandr Andrushchenko
A commit message would be useful.
Sure, v1 will have it
On 05/19/2018 01:19 AM, Boris Ostrovsky wrote:
On 05/17/2018 04:26 AM, Oleksandr Andrushchenko wrote:
From: Oleksandr Andrushchenko
Signed-off-by: Oleksandr Andrushchenko
---
drivers/xen/grant-table.c | 49 +++
include/xen/grant_table.h | 7 ++
2
On 05/19/2018 01:04 AM, Boris Ostrovsky wrote:
On 05/17/2018 04:26 AM, Oleksandr Andrushchenko wrote:
From: Oleksandr Andrushchenko
A commit message would be useful.
Sure, v1 will have it
Signed-off-by: Oleksandr Andrushchenko
for (i = 0; i < nr_pages
From: Oleksandr Andrushchenko
Signed-off-by: Oleksandr Andrushchenko
---
drivers/xen/grant-table.c | 49 +++
include/xen/grant_table.h | 7 ++
2 files changed, 56 insertions(+)
diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index
From: Oleksandr Andrushchenko
Signed-off-by: Oleksandr Andrushchenko
---
drivers/xen/balloon.c | 214 +++---
drivers/xen/xen-balloon.c | 2 +
include/xen/balloon.h | 11 +-
3 files changed, 188 insertions(+), 39 deletions(-)
diff --git a/drivers/xen
From: Oleksandr Andrushchenko
Signed-off-by: Oleksandr Andrushchenko
---
drivers/xen/gntdev.c | 954 +-
include/uapi/xen/gntdev.h | 101
include/xen/gntdev_exp.h | 23 +
3 files changed, 1066 insertions(+), 12 deletions(-)
create mode 100644
From: Oleksandr Andrushchenko
This work is in response to my previous attempt to introduce Xen/DRM
zero-copy driver [1] to enable Linux dma-buf API [2] for Xen based
frontends/backends. There is also an existing hyper_dmabuf approach
available [3] which, if reworked to utilize the proposed
On 04/16/2018 12:32 PM, Daniel Vetter wrote:
On Mon, Apr 16, 2018 at 10:22 AM, Oleksandr Andrushchenko
wrote:
On 04/16/2018 10:43 AM, Daniel Vetter wrote:
On Mon, Apr 16, 2018 at 10:16:31AM +0300, Oleksandr Andrushchenko wrote:
On 04/13/2018 06:37 PM, Daniel Vetter wrote:
On Wed, Apr 11
On 04/16/2018 10:43 AM, Daniel Vetter wrote:
On Mon, Apr 16, 2018 at 10:16:31AM +0300, Oleksandr Andrushchenko wrote:
On 04/13/2018 06:37 PM, Daniel Vetter wrote:
On Wed, Apr 11, 2018 at 08:59:32AM +0300, Oleksandr Andrushchenko wrote:
On 04/10/2018 08:26 PM, Dongwon Kim wrote:
On Tue, Apr
On 04/13/2018 06:37 PM, Daniel Vetter wrote:
On Wed, Apr 11, 2018 at 08:59:32AM +0300, Oleksandr Andrushchenko wrote:
On 04/10/2018 08:26 PM, Dongwon Kim wrote:
On Tue, Apr 10, 2018 at 09:37:53AM +0300, Oleksandr Andrushchenko wrote:
On 04/06/2018 09:57 PM, Dongwon Kim wrote:
On Fri, Apr 06
On 04/10/2018 08:26 PM, Dongwon Kim wrote:
On Tue, Apr 10, 2018 at 09:37:53AM +0300, Oleksandr Andrushchenko wrote:
On 04/06/2018 09:57 PM, Dongwon Kim wrote:
On Fri, Apr 06, 2018 at 03:36:03PM +0300, Oleksandr Andrushchenko wrote:
On 04/06/2018 02:57 PM, Gerd Hoffmann wrote:
Hi,
I fail
On 04/06/2018 09:57 PM, Dongwon Kim wrote:
On Fri, Apr 06, 2018 at 03:36:03PM +0300, Oleksandr Andrushchenko wrote:
On 04/06/2018 02:57 PM, Gerd Hoffmann wrote:
Hi,
I fail to see any common ground for xen-zcopy and udmabuf ...
Does the above mean you can assume that xen-zcopy and udmabuf
On 04/06/2018 02:57 PM, Gerd Hoffmann wrote:
Hi,
I fail to see any common ground for xen-zcopy and udmabuf ...
Does the above mean you can assume that xen-zcopy and udmabuf
can co-exist as two different solutions?
Well, udmabuf route isn't fully clear yet, but yes.
See also gvt (intel vgp
On 04/06/2018 12:07 PM, Gerd Hoffmann wrote:
I'm not sure we can create something which works on both kvm and xen.
The memory management model is quite different ...
On xen the hypervisor manages all memory. Guests can allow other guests
to access specific pages (using grant tables). In theor
On 04/06/2018 12:07 PM, Gerd Hoffmann wrote:
Hi,
* The general interface should be able to express sharing from any
guest:guest, not just guest:host. Arbitrary G:G sharing might be
something some hypervisors simply aren't able to support, but the
userspace API itself shoul
For Xen we would love to see UAPI to create a dma-buf from grant
references
provided, so we can use this generic solution to implement zero-copying
without
breaking the existing Xen protocols. This can probably be extended to other
hypervizors as well.
Thank you,
Oleksandr Andrushchenko
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