ase" which
adds device specific release ops is for making the virtio_gpu fence freed
upon the last dma_fence_put call.
The 2nd patch "drm/virtio: fence created per cursor/plane update" contains
the main implementation of per-plane fence.
Dongwon Kim (2):
drm/virtio: .release ops f
virtio_gpu_fence_release is added to free virtio-gpu-fence
upon release of dma_fence.
Cc: Gurchetan Singh
Cc: Gerd Hoffmann
Cc: Vivek Kasireddy
Signed-off-by: Dongwon Kim
---
drivers/gpu/drm/virtio/virtgpu_fence.c | 8
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm
oid uninitialzed
ptr problem (Reported by Dan Carpenter/kernel-test-robot)
Reported-by: kernel test robot
Reported-by: Dan Carpenter
Cc: Gurchetan Singh
Cc: Gerd Hoffmann
Cc: Vivek Kasireddy
Signed-off-by: Dongwon Kim
---
drivers/gpu/drm/virtio/virtgpu_drv.h | 1 -
drivers/gpu/drm/vir
On Thu, Jun 09, 2022 at 06:24:43AM +0200, Gerd Hoffmann wrote:
> On Fri, Jun 03, 2022 at 02:18:49PM -0700, Dongwon Kim wrote:
> > Having one fence for a vgfb would cause conflict in case there are
> > multiple planes referencing the same vgfb (e.g. Xorg screen covering
> > two
virtio_gpu_fence_release is added to free virtio-gpu-fence
upon release of dma_fence.
Cc: Gurchetan Singh
Cc: Gerd Hoffmann
Cc: Vivek Kasireddy
Signed-off-by: Dongwon Kim
---
drivers/gpu/drm/virtio/virtgpu_fence.c | 8
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm
not required anymore with the suggested code change so
both prepare_fb and cleanup_fb are removed since only fence creation/
freeing are done in there.
Cc: Gurchetan Singh
Cc: Gerd Hoffmann
Cc: Vivek Kasireddy
Signed-off-by: Dongwon Kim
---
drivers/gpu/drm/virtio/virtgpu_drv.h | 1 -
driv
Trying to use the fence to make plane update to wait for the host to
consume the buffer for better synchronization in all cases
Cc: Gurchetan Singh
Cc: Gerd Hoffmann
Cc: Vivek Kasireddy
Signed-off-by: Dongwon Kim
---
drivers/gpu/drm/virtio/virtgpu_plane.c | 7 +--
1 file changed, 1
This series is for fixing some issues regarding scanout synchronization with
host (e.g. QEMU/KVM) that uses virtio-gpu. This series replaces the previously
submitted one, "[PATCH v2 0/2] drm/virtio: fence handling in case of multi
scanouts".
Dongwon Kim (3):
drm/virtio: .release ops f
virtio_gpu_fence_release is added to free virtio-gpu-fence
upon release of dma_fence.
Cc: Gurchetan Singh
Cc: Gerd Hoffmann
Cc: Vivek Kasireddy
Signed-off-by: Dongwon Kim
---
drivers/gpu/drm/virtio/virtgpu_fence.c | 8
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm
flushed again
consecutively.
Cc: Gurchetan Singh
Cc: Gerd Hoffmann
Cc: Vivek Kasireddy
Signed-off-by: Dongwon Kim
---
drivers/gpu/drm/virtio/virtgpu_drv.h | 7 +++
drivers/gpu/drm/virtio/virtgpu_plane.c | 76 +++---
2 files changed, 51 insertions(+), 32 deletions(-)
dif
This helper is needed for framebuffer synchronization. Old framebuffer data
is often displayed on the guest display without this helper.
Cc: Gurchetan Singh
Cc: Gerd Hoffmann
Cc: Vivek Kasireddy
Signed-off-by: Dongwon Kim
---
drivers/gpu/drm/virtio/virtgpu_plane.c | 4
1 file changed, 4
.
Second patch is the implementation of virtio-gpu resource restoration machanism
that
is needed for the synchronization of resources between the host and the guest
when
suspend(and hibernation) and resume happens.
Dongwon Kim (2):
drm/virtio: freeze and restore hooks to support suspend and
virtqueue needs to be flushed and removed before VM goes into sleep or
hibernation then should be reinitialized again upon wake-up.
Cc: Gerd Hoffmann
Cc: Vivek Kasireddy
Signed-off-by: Dongwon Kim
---
drivers/gpu/drm/virtio/virtgpu_drv.c | 53 +++-
drivers/gpu/drm
ed as a new function, "virtio_gpu_object_pin".
Cc: Gerd Hoffmann
Cc: Vivek Kasireddy
Signed-off-by: Dongwon Kim
---
drivers/gpu/drm/virtio/virtgpu_drv.c| 6 ++
drivers/gpu/drm/virtio/virtgpu_drv.h| 10 ++
drivers/gpu/drm/virtio/virtgpu_kms.c| 1 +
drivers/gpu/drm/vir
by Gerd and DW)
>
> Cc: Gerd Hoffmann
> Signed-off-by: Vivek Kasireddy
> Signed-off-by: Dongwon Kim
> ---
> drivers/dma-buf/udmabuf.c | 51 +--
> 1 file changed, 44 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/dma-buf/udmabuf
Render clients should be able to create/destroy dumb object to import
and use it as render buffer in case the default DRM device is different
from the render device (i.e. kmsro).
Signed-off-by: Dongwon Kim
---
drivers/gpu/drm/drm_ioctl.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions
are
now defined as module parameters so that those can be optionally configured
by root with proper values to remove these constraints.
Cc: Gerd Hoffmann
Signed-off-by: Dongwon Kim
---
drivers/dma-buf/udmabuf.c | 9 +++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/
I think I should
look into kmsro to make the client app to get the render buffer from
ro-device instead. Thanks
On Fri, Jun 11, 2021 at 11:39:46AM +0100, Emil Velikov wrote:
> On Fri, 11 Jun 2021 at 10:47, Daniel Vetter wrote:
> >
> > On Thu, Jun 10, 2021 at 02:36:59PM -0700, Dongwo
ion is at
https://lists.freedesktop.org/archives/dri-devel/2022-September/373782.html
And very first version that has some feedbacks can be found here:
https://www.spinics.net/lists/dri-devel/msg349641.html
Dongwon Kim (3):
drm/virtio: .release ops for virtgpu fence release
drm/virtio: new fence
virtio_gpu_fence_release is added to free virtio-gpu-fence
upon release of dma_fence.
Cc: Gerd Hoffmann
Cc: Vivek Kasireddy
Signed-off-by: Dongwon Kim
---
drivers/gpu/drm/virtio/virtgpu_fence.c | 8
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/virtio/virtgpu_fence.c
This helper is needed for framebuffer synchronization. Old framebuffer data
is often displayed on the guest display without this helper.
Cc: Gerd Hoffmann
Cc: Vivek Kasireddy
Signed-off-by: Dongwon Kim
---
drivers/gpu/drm/virtio/virtgpu_plane.c | 4
1 file changed, 4 insertions(+)
diff
ushed again
consecutively.
Cc: Gerd Hoffmann
Cc: Vivek Kasireddy
Signed-off-by: Dongwon Kim
---
drivers/gpu/drm/virtio/virtgpu_drv.h | 7 +++
drivers/gpu/drm/virtio/virtgpu_plane.c | 76 +++---
2 files changed, 51 insertions(+), 32 deletions(-)
diff --git a/drivers/gpu/d
bo->global_name should be updated first before a hash value
for the entry is calculated with it by HASH_ADD macro.
Signed-off-by: Dongwon Kim
---
intel/intel_bufmgr_gem.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/intel/intel_bufmgr_gem.c b/intel/intel_bufmgr_ge
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 xen-specifi
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
> ---
> driver
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 a
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 gr
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 double-c
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
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-zcop
running on Intel 12th Gen.
Guest: Ubuntu VM running Xorg w/ 2~3 virtual displays using blob scanouts
Dongwon Kim (1):
drm/virtio: new fence for every plane update
drivers/gpu/drm/virtio/virtgpu_drv.h | 7 +++
drivers/gpu/drm/virtio/virtgpu_plane.c | 66 +-
2 fi
oy_state does the same.
Cc: Dmitry Osipenko
Cc: Gerd Hoffmann
Cc: Vivek Kasireddy
Signed-off-by: Dongwon Kim
---
drivers/gpu/drm/virtio/virtgpu_drv.h | 7 +++
drivers/gpu/drm/virtio/virtgpu_plane.c | 66 +-
2 files changed, 51 insertions(+), 22 deletions(-)
diff --g
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
> >>can co-exist as two differen
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,
> &g
(changed subject and decoupling from udmabuf thread)
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,
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
inter-doma
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
>
inal Message-
> >>>>From: Xen-devel [mailto:xen-devel-boun...@lists.xenproject.org] On Behalf
> >>>>Of Roger Pau Monné
> >>>>Sent: 18 April 2018 11:11
> >>>>To: Oleksandr Andrushchenko
> >>>>Cc: jgr...@suse.
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 d
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
GEN".
Signed-off-by: Dongwon Kim
Signed-off-by: Mateusz Polrola
---
drivers/dma-buf/hyper_dmabuf/Kconfig | 20 +++
drivers/dma-buf/hyper_dmabuf/Makefile | 1 +
drivers/dma-buf/hyper_dmabuf/hyper_dmabuf_drv.c | 146 ++
drivers/dma-buf/hyper_
_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
Signed-off-by: Mateusz Polrola
---
drivers/dma-buf/hyper_dmabuf/Kconfig |
structures of importer or 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
Signed-off-by: Mateusz Polrola
---
drivers/dma-buf/Kconfig
Use threaded interrupt intead of regular one because most part of ISR
is time-critical and possibly sleeps
Signed-off-by: Dongwon Kim
---
.../hyper_dmabuf/backends/xen/hyper_dmabuf_xen_comm.c | 19 +++
1 file changed, 11 insertions(+), 8 deletions(-)
diff --git a/drivers/dma
Define a private data (e.g. meta data for the buffer) attached to
each hyper_DMABUF structure. This data is provided by userapace via
export_remote IOCTL and its size can be up to 192 bytes.
Signed-off-by: Dongwon Kim
Signed-off-by: Mateusz Polrola
---
drivers/dma-buf/hyper_dmabuf
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
Signed-off-by: Mateusz Polrola
---
drivers/dma-buf/hyper_dmabuf/Makefile | 1 +
drivers/dma-buf/hyper_dmabuf
/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 driver section in MAINTAINERS
hyper_dmab
Hyper_DMABUF DRIVER
M: Dongwon Kim
M: Mateusz Polrola
L: linux-ker...@vger.kernel.org
L: xen-de...@lists.xenproject.org
S: Maintained
F: drivers/dma-buf/hyper_dmabuf*
F: include/uapi/linux/hyper_dmabuf.h
F: Documentation/hyper-dmabuf-sharing.txt
T
ted (still 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
Signe
Reference document for hyper_DMABUF driver
Documentation/hyper-dmabuf-sharing.txt
Signed-off-by: Dongwon Kim
---
Documentation/hyper-dmabuf-sharing.txt | 734 +
1 file changed, 734 insertions(+)
create mode 100644 Documentation/hyper-dmabuf-sharing.txt
diff
omm.c
> : 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
> Signed-off-by: Mateusz Polrola
>
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
> >
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
n about
existing comm channels among VMs
Signed-off-by: Dongwon Kim
Signed-off-by: Mateusz Polrola
---
drivers/xen/Kconfig| 2 +
drivers/xen/Makefile | 1 +
drivers/xen/hyper_dmabuf/Kconfig | 14 +
drivers/
High-level description of hyper_dmabuf driver has been added
to "Documentation" directory.
Signed-off-by: Dongwon Kim
---
Documentation/hyper-dmabuf-sharing.txt | 734 +
1 file changed, 734 insertions(+)
create mode 100644 Documentation/hyper-dmabuf-s
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
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c | 11 ++-
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/xen
ted to the target domain.
This patch also Includes changes in printk calles for debugging.
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c | 28 +--
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 17
drivers/xen/hy
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
---
.../xen/hyper_dmabuf/hyper_dmabuf_remote_sync.c| 68 +-
1 file changed, 53 insertions
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
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c | 13 +++--
drivers/xen/hyper_dmabuf
Use workqueue mechanism to delay message parsing done
after exiting from ISR to reduce ISR execution time.
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c| 13 ++
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.h| 5 +
drivers/xen/hyper_dmabuf
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
---
drivers/xen/hyper_dmabuf/Makefile | 1 +
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c| 90
el 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
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c| 11 +-
drivers/xe
From: Mateusz Polrola
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
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 20 +++-
1 file changed, 11
xported in 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
Signed-off-by: Mateusz Polrola
---
drivers/xen/hyper_
termined 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
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.h | 8 +--
From: Mateusz Polrola
Replaces printk to debug macros
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c| 4 +-
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.h| 4 ++
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c| 46 +-
drivers/xen
From: Mateusz Polrola
In hyper_dmabuf_export_remote, page_info->pages needs to
be freed before freeing page_info.
Also, info_entry in hyper_dmabuf_remove_exported/imported
and hyper_dmabuf_remove_exporter/importer_ring needs to
be freed after removal of an entry.
Signed-off-by: Dongwon
.
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c| 37 ++--
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 34 +++
drivers/xen/hyper_dmabuf/hyper_dmabuf_msg.c| 49 +++---
drivers/xen/hyper_dmabuf
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
---
drivers/xen/hyper_dmabuf
config
option, "CONFIG_HYPER_DMABUF_SYSFS" to 'yes'.
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/Kconfig | 7 +++
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c | 12 -
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c | 2 +-
drivers/xen/hyper_dmabuf/hype
whole driver for a new hypervisor.
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/Makefile | 11 +-
drivers/xen/hyper_dmabuf/hyper_dmabuf_conf.h | 1 -
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c| 33 +-
drivers/xen/hyper_dmabuf/hyper_dmabuf_d
communication channel is
initialized and fully active to prevent a race condition.
Signed-off-by: Dongwon Kim
---
.../xen/hyper_dmabuf/xen/hyper_dmabuf_xen_comm.c | 24 +++---
1 file changed, 21 insertions(+), 3 deletions(-)
diff --git a/drivers/xen/hyper_dmabuf/xen
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
---
drivers/xen/hyper_dmabuf/xen/hyper_dmabuf_xen_shm.c | 8 +---
1 file
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
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_conf.h | 26 ++
drivers/xen/hyper_dmabu
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
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c| 14 +++--
drivers/xen/hyper_dmabuf/hyper_dmabuf_id.c | 2
From: Mateusz Polrola
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
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c | 2 +-
1 file changed, 1 insertion
override by another caller.
Signed-off-by: Dongwon Kim
---
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| 6 ++
drivers/xen/hyper_dmabuf/xen
d automatically when all of file pointers
opened for accessing hyper_dmabuf driver are closed.
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c| 6 ++-
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 73 ++
drivers/xen/hyper_dmabuf/hyper
rng_key[3];
} hyper_dmabuf_id_t;
Signed-off-by: Dongwon Kim
---
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 --
drivers/xen/hyper_dmabuf/hyper_dmabuf_id.h
From: Mateusz Polrola
Added error checking on the result of function call,
dma_buf_map_attachment
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c
b/drivers/xen
ce in func names in the backend.
3. some minor clean-ups
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_conf.h | 2 -
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c| 91 +++---
drivers/xen/hyper_dmabuf/hyper_dmabuf_msg.c| 2 -
..
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
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_imp.c| 4 +
drivers/xen/hyper_dmabuf/hyper_
Reordering clean-up procedure
Signed-off-by: Dongwon Kim
---
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/drivers/xen/hyper_dmabuf
memory leaks in various
places.
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/Kconfig | 1 +
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c| 17 ++--
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.h| 1 +
drivers/xen/hyper_dmabuf/hyper_dmabuf_id.c
From: Mateusz Polrola
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
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 8
include/uap
,
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
---
drivers/xen/hyper_dmabuf/Makefile | 1 +
drivers/xen/hyper_dmabuf
From: Mateusz Polrola
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
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 6 ++-
.../xen/hyper_dmabuf/xen/hyper_dmabuf_xen_shm.c
Now, use CONFIG_HYPER_DMABUF_XEN as a configuration option
for building hyper_dmabuf for Xen hypervisor.
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c
i/xen/
Signed-off-by: Dongwon Kim
---
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 +
drivers/xen/hyper_dmabuf/hyper_dmabuf_msg.c
All shared pages need to be read-only from importer's
point of view to prevent the buffer from being corrupted.
This patch may need to be reverted if we find a better
way to protect the original content in this sharing
model.
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabu
From: Mateusz Polrola
Extending DMA bitmask of hyper_dmabuf device to cover whole
address space driver may access.
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/xen/hyper_dmabuf
From: Mateusz Polrola
It is needed to freeing already-mapped pages if it gets error
before finishing mapping all pages.
Signed-off-by: Dongwon Kim
---
.../xen/hyper_dmabuf/xen/hyper_dmabuf_xen_shm.c| 43 +++---
1 file changed, 38 insertions(+), 5 deletions(-)
diff --git a
Make sure to free buffers before returning to prevent memory leaks
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 19 +++-
drivers/xen/hyper_dmabuf/hyper_dmabuf_msg.c| 9 +++-
drivers/xen/hyper_dmabuf/hyper_dmabuf_ops.c| 6 ++-
drivers
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
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/drivers/xen/hyper_dmabuf
Fixing all styling problems caught by checkpatch.pl
Signed-off-by: Dongwon Kim
---
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 | 12 +-
drivers/xen/hyper_dmabuf
ome of export_remote_ioctl to make it more readable and
compact.
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 110 ++---
drivers/xen/hyper_dmabuf/hyper_dmabuf_struct.h | 6 +-
2 files changed, 65 insertions(+), 51 deletions(-)
diff --git a/d
From: Mateusz Polrola
Need to update random keys when reusing hyper_dmabuf_id
in the list to increase security
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_id.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/xen/hyper_dmabuf
missing errors and warnings in hyper_dmabuf_list.c and
hyper_dmabuf_list.h.
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c| 9 +-
drivers/xen/hyper_dmabuf/hyper_dmabuf_event.c | 6 +-
drivers/xen/hyper_dmabuf/hyper_dmabuf_id.c | 9 +-
drivers/xen/
core management) 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
---
drivers/xen/hyper_dmabuf/Makefile
From: Mateusz Polrola
Introduced additional init and cleanup routines in the backend
API structure that might be useful for hypervisors other than Xen.
Signed-off-by: Mateusz Polrola
Signed-off-by: Dongwon Kim
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_drv.c | 14
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