On Wed, Jun 06, 2018 at 05:51:38PM -0400, Boris Ostrovsky wrote:
> On 06/06/2018 08:46 AM, Oleksandr Andrushchenko wrote:
> > On 06/05/2018 01:36 AM, Boris Ostrovsky wrote:
> >> On 06/01/2018 07:41 AM, Oleksandr Andrushchenko wrote:
> >>> From: Oleksandr Andrushchenko
> >>>
> >>> Allow creating
On Fri, May 25, 2018 at 06:33:29PM +0300, Oleksandr Andrushchenko wrote:
> 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
On Fri, May 25, 2018 at 06:33:24PM +0300, Oleksandr Andrushchenko wrote:
> 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
> ---
>
Still need more time to review the whole code changes but I noticed one thing.
We've been using the term "hyper_dmabuf" for hypervisor-agnostic linux dmabuf
solution and we are planning to call any of our future solution for other
hypervisors the same name. So having same name for this
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-z
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 hy
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
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, 20
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,
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
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
Thanks for your comment, Roger
I will try to polish this doc and resubmit.
(I put some comments below as well.)
On Fri, Feb 23, 2018 at 04:15:00PM +, Roger Pau Monné wrote:
> On Tue, Feb 13, 2018 at 05:50:01PM -0800, Dongwon Kim wrote:
> > Reference document for hyper_DMAB
On Mon, Feb 19, 2018 at 06:01:29PM +0100, Daniel Vetter wrote:
> On Tue, Feb 13, 2018 at 05:49:59PM -0800, Dongwon Kim wrote:
> > This patch series contains the implementation of a new device driver,
> > hyper_DMABUF driver, which provides a way to expand the boundary of
> >
: comm ch management and ISRs for incoming messages.
>
> hyper_dmabuf/xen/hyper_dmabuf_xen_comm_list.c
> : Database (linked-list) for keeping information about
> existing comm channels among VMs
>
> Signed-off-by: Dongwon Kim <dongwon@intel.com>
> Signed-off-by: Mat
N".
Signed-off-by: Dongwon Kim <dongwon@intel.com>
Signed-off-by: Mateusz Polrola <mateuszx.potr...@intel.com>
---
drivers/dma-buf/hyper_dmabuf/Kconfig | 20 +++
drivers/dma-buf/hyper_dmabuf/Makefile | 1 +
drivers/dma-buf/hyper_d
r exporter hyper_DMABUF
include/uapi/linux/hyper_dmabuf.h
- Contains definition of data types and structures referenced by user
application to interact with driver
Signed-off-by: Dongwon Kim <dongwon@intel.com>
Signed-off-by: Mateusz Polrola <mateuszx.potr...@intel.com>
---
dr
Reference document for hyper_DMABUF driver
Documentation/hyper-dmabuf-sharing.txt
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
Documentation/hyper-dmabuf-sharing.txt | 734 +
1 file changed, 734 insertions(+)
create mode 100644 Documentation
_rbuf,
.init_tx_ch = xen_be_init_tx_rbuf,
.send_req = xen_be_send_req,
};
A section for Hypervisor Backend has been added to
"Documentation/hyper-dmabuf-sharing.txt" accordingly
Signed-off-by: Dongwon Kim <dongwon@intel.com>
Signed-off-by: Mateusz Polrola <mateuszx.potr...
Use threaded interrupt intead of regular one because most part of ISR
is time-critical and possibly sleeps
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
.../hyper_dmabuf/backends/xen/hyper_dmabuf_xen_comm.c | 19 +++
1 file changed, 11 insertions(+), 8 deletions(-)
till valid but will be unexported soon)
HYPER_DMABUF_QUERY_PRIV_INFO_SIZE - size of private information (given by
user application on exporter's side) attached to hyper_DMABUF
HYPER_DMABUF_QUERY_PRIV_INFO - private information attached to hyper_DMABUF
Signed-off-by: Dongwon Kim <dongwon@intel.co
and so on) will be mimicked on this shadowed DMA-BUF for tracking
and synchronization purpose (e.g. +-reference count to check the status).
Signed-off-by: Dongwon Kim <dongwon@intel.com>
Signed-off-by: Mateusz Polrola <mateuszx.potr...@intel.com>
---
drivers/dma-buf/hyper_dma
15-rc2
https://github.com/downor/linux_hyper_dmabuf.git hyper_dmabuf_integration_v4
Dongwon Kim, Mateusz Polrola (9):
hyper_dmabuf: initial upload of hyper_dmabuf drv core framework
hyper_dmabuf: architecture specification and reference guide
MAINTAINERS: adding Hyper_DMABUF dri
Hyper_DMABUF DRIVER
M: Dongwon Kim <dongwon@intel.com>
M: Mateusz Polrola <mateuszx.potr...@intel.com>
L: linux-ker...@vger.kernel.org
L: xen-devel@lists.xenproject.org
S: Maintained
F: drivers/dma-buf/hyper_dmabuf*
F: include/uapi/linux/hype
On Wed, Dec 20, 2017 at 09:17:07AM +0100, Juergen Gross wrote:
> On 20/12/17 00:27, Dongwon Kim wrote:
> > I forgot to include this brief information about this patch series.
> >
> > This patch series contains the implementation of a new device driver,
> > hyper_dmab
Yes, I will post a test application.
Thanks
On Wed, Dec 20, 2017 at 10:38:08AM +0200, Oleksandr Andrushchenko wrote:
>
> On 12/20/2017 01:27 AM, Dongwon Kim wrote:
> >This patch series contains the implementation of a new device driver,
> >hyper_dmabuf, which provides a
On Wed, Dec 20, 2017 at 10:59:57AM +0100, Daniel Vetter wrote:
> On Tue, Dec 19, 2017 at 03:27:31PM -0800, Dongwon Kim wrote:
> > I forgot to include this brief information about this patch series.
> >
> > This patch series contains the implementation of a new device dri
I forgot to include this brief information about this patch series.
This patch series contains the implementation of a new device driver,
hyper_dmabuf, which provides a method for DMA-BUF sharing across
different OSes running on the same virtual OS platform powered by
a hypervisor.
Detailed
Fixing all styling problems caught by checkpatch.pl
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c| 53 ++--
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.h| 6 +-
drivers/xen/hyper_dmabuf/hyper_dmabuf_event.c
Adding ID check to make sure a dma-buf is exported externally
since hyper_dmabuf only allows to export a dmabuf to a different
VM.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 6 ++
1 file changed, 6 insertions(+)
diff
le between two VMs.
When upstream channel is removed (e.g. unloading driver), VM on the
other side is notified and "xenstore watch" callback is invoked.
Via this callback, VM can remove corresponding downstream channel.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hy
,
DMABUF_QUERY_UNEXPORTED,
DMABUF_QUERY_DELAYED_UNEXPORTED,
};
Also, actual querying part of the function is moved to hyper_dmabuf_query.c
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/Makefile | 1 +
drive
Now, released hyper_dmabuf_ids are stored in a stack -
(hyper_dmabuf_private.id_queue) for reuse. This is to prevent
overflow of ids for buffers. We also limit maximum number for
the id to 1000 for the stability and optimal performance.
Signed-off-by: Dongwon Kim <dongwon@intel.
;
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c
b/drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c
index f2731bf..bbb3414 100644
Now, use CONFIG_HYPER_DMABUF_XEN as a configuration option
for building hyper_dmabuf for Xen hypervisor.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drive
Use workqueue mechanism to delay message parsing done
after exiting from ISR to reduce ISR execution time.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c| 13 ++
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.h| 5 +
drive
From: Mateusz Polrola <mateuszx.potr...@intel.com>
Wrong vmid is used in case of sending HYPER_DMABUF_EXPORT_FD_FAILED
message. Instead of vmid, hypder dmabuf id is being used.
Signed-off-by: Mateusz Polrola <mateuszx.potr...@intel.com>
Signed-off-by: Dongwon Kim <dongwo
Reordering clean-up procedure
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 37 +--
1 file changed, 24 insertions(+), 13 deletions(-)
diff --git a/drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c
b/drive
From: Mateusz Polrola <mateuszx.potr...@intel.com>
If shared pages of buffer were already mapped on importer side, do
not map them again on next request to export fd.
Signed-off-by: Mateusz Polrola <mateuszx.potr...@intel.com>
Signed-off-by: Dongwon Kim <dongwon@intel.com>
rng_key[3];
} hyper_dmabuf_id_t;
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c| 2 +-
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.h| 3 +-
drivers/xen/hyper_dmabuf/hyper_dmabuf_id.c | 57 --
drive
To make type's name compact, *_backend_ops is changed to '*_bknd_ops'. Also
'ops' is now changed to 'bknd_ops' to clarify it is a data structure with
entry points of 'backend' operations.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf
-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c | 23 ++---
drivers/xen/hyper_dmabuf/hyper_dmabuf_event.c| 8 +--
drivers/xen/hyper_dmabuf/hyper_dmabuf_event.h| 2 +-
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c
To make hyper_dmabuf_export_remote_ioctl more compact and readable,
a new function call, 'fastpath_export' is created to replace a routine
in hyper_dmabuf_export_remote_ioctl for the case requested buffer for
exporting is already in the LIST (exported previously).
Signed-off-by: Dongwon Kim
From: Mateusz Polrola <mateuszx.potr...@intel.com>
Replaces printk to debug macros
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c| 4 +-
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.h| 4 ++
drivers/xen/
s
some of export_remote_ioctl to make it more readable and
compact.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 110 ++---
drivers/xen/hyper_dmabuf/hyper_dmabuf_struct.h | 6 +-
2 files changed, 65 insertions(+),
).
Only limitation is it currently checks domain ID 0 to 10.
We could increase this range if needed.
With this patch, we don't have to call comm channel
setup IOCTL on importer side anymore. For example,
we can remove ioctl call in init_hyper_dmabuf from
vmdisplay.
Signed-off-by: Dongwon Kim <dong
hyper_dmabuf driver on importing domain now generates event
every time new hyper_dmabuf is available (visible) to the
importer.
Each event comes with 128 byte private data, which can
contain any meta data or user data specific to the originator
of DMA BUF.
Signed-off-by: Dongwon Kim <dong
in func names in the backend.
3. some minor clean-ups
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_conf.h | 2 -
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c| 91 +++---
drivers/xen/hyper_dmabuf/hyper_dmabuf
modifications, changing type
of function calls to static and correcting some of error code.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c | 38 +--
drivers/xen/hyper_dmabuf/hyper_dmabuf_event.c | 15 +--
d
,where private data will be copied in case query item is
'HYPER_DMABUF_QUERY_PRIV_INFO'.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c | 7 +-
drivers/xen/hyper_dmabuf/hyper_dmabuf_event.c | 6 ++
drivers/xen/hyper_dmabuf/hyper_dmabuf_
isting comm channels among VMs
Signed-off-by: Dongwon Kim <dongwon@intel.com>
Signed-off-by: Mateusz Polrola <mateuszx.potr...@intel.com>
---
drivers/xen/Kconfig| 2 +
drivers/xen/Makefile | 1 +
drivers/xen/hy
From: Mateusz Polrola <mateuszx.potr...@intel.com>
When error occurs while sharing pages, all pages already shared
needs to be un-shared and proper error code has to be returned.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl
From: Mateusz Polrola <mateuszx.potr...@intel.com>
Extending DMA bitmask of hyper_dmabuf device to cover whole
address space driver may access.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 2 +-
1 file changed, 1 insertion(+)
) is also put in the a new file,
'hyper_dmabuf_sgt_proc.c'. hyper_dmabuf_imp.c and hyper_dmabuf_imp.h
are removed as a result.
3. Header files and Makefile are also updated accordingly.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/Makefile
blocks back ring irq until communication channel is
initialized and fully active to prevent a race condition.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
.../xen/hyper_dmabuf/xen/hyper_dmabuf_xen_comm.c | 24 +++---
1 file changed, 21 insertions(+), 3 deleti
n sgt_info as an indicator
for usage of buffer on the importer.
3. num of pages is added (nents) to hyper_dmabuf_sgt_info
to keep the size info in EXPORT list.
3. more minor changes and clean-ups.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
Signed-off-by: Mateusz Polrola <mateusz
From: Mateusz Polrola <mateuszx.potr...@intel.com>
Using a word, 'private' is not recommended because of conflict
with language keyword when compiling with C++.
So changing those to 'priv'.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf
erface under
include/uapi/xen/
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c| 21 ++---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 17 +++-
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.h | 74 +
Redefined nents_last, which means # of gref in the last page
of lvl2 table in any situation even if it is same as REFS_PER_PAGE.
With this, loop can be simplified with less condition check.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/xen/hyper_dmabuf_xen
r is still valid (not unexported) on expoter VM's side before
importer VM starts to use it.
"delayed_ms" attribute is added to unexport ioctl, used for hardcoding
delay from userspace.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c|
Cleaned up and corrected error codes and condition in various
error check routines. Also added proper err messages when func
returns error.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c| 14 +++--
drivers/xen/hyper_
of this is to get DMA_BUF synchronized
eventually between the original creator of DMA_BUF and the
end consumer of it running on the importer VM.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/Makefile | 1 +
drivers/xen/hyper_dmabuf/hyper_dmabuf
From: Mateusz Polrola <mateuszx.potr...@intel.com>
Added error checking on the result of function call,
dma_buf_map_attachment
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 5 +
1 file changed, 5 insertions(+)
diff --g
Set the license of the driver to "GPL and MIT-X dual" and owner
to "Intel". Also attached license term to all source and header
files
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_conf.h | 26 ++
Kernel.
This patch also addresses possible memory leaks in various
places.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/Kconfig | 1 +
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c| 17 ++--
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.h
rt"
routine, that is executed automatically when all of file pointers
opened for accessing hyper_dmabuf driver are closed.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c| 6 ++-
drivers/xen/hyper_dmabuf/hype
From: Mateusz Polrola <mateuszx.potr...@intel.com>
It is needed to freeing already-mapped pages if it gets error
before finishing mapping all pages.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
.../xen/hyper_dmabuf/xen/hyper_dmabuf_xen_shm.c| 43 ++
n exported to the target domain.
This patch also Includes changes in printk calles for debugging.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c | 28 +--
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 17 -
uf can be enabled by setting a new config
option, "CONFIG_HYPER_DMABUF_SYSFS" to 'yes'.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/Kconfig | 7 +++
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c | 12 -
drivers/xen/hyper_dmabuf/hy
hyper_dmabuf_importer_ring_setup creates new channel only if
there is no existing downstream communication channel previously
created for the exporter VM.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c | 13 +++--
drive
cation channel
to prevent req_pending override by another caller.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c | 2 ++
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.h | 1 +
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c
Make sure list of mapping/attaching activities on impoter VM is not
empty before doing unmapping/detaching shadow DMA BUF for indirect
synchronization.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
.../xen/hyper_dmabuf/hyper_dmabuf_remote_sync.c| 68 +-
ned by how "FORCED_UNEXPORING"
is defined.
Also, the word "destroy" in IOCTL commands and several functions
have been modified to "unexport", which sounds more reasonable.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dma
From: Mateusz Polrola <mateuszx.potr...@intel.com>
Checking whether buffer has more than two pages should be done
by evaluating nents > 1 instead of i > 1 to properly cover the
case when nents == 2.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
driver
Need a new index, k in hyper_dmabuf_extract_pgs function for
picking up a correct n-th page in contigous memory space.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c | 11 ++-
1 file changed, 6 insertions(+), 5 deletions(-)
diff
an entry.
Signed-off-by: Dongwon Kim <dongwon@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 1 +
drivers/xen/hyper_dmabuf/hyper_dmabuf_list.c | 2 ++
drivers/xen/hyper_dmabuf/xen/hyper_dmabuf_xen_comm.c | 2 ++
drivers/xen/h
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