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

2018-04-09 Thread Daniel Vetter
On Fri, Apr 06, 2018 at 02:25:08PM +0300, Oleksandr Andrushchenko wrote: > On 04/03/2018 12:47 PM, Daniel Vetter wrote: > > On Thu, Mar 29, 2018 at 04:19:31PM +0300, Oleksandr Andrushchenko wrote: > > > From: Oleksandr Andrushchenko > > > +static int

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

2018-04-09 Thread Daniel Vetter
On Fri, Apr 06, 2018 at 02:25:08PM +0300, Oleksandr Andrushchenko wrote: > On 04/03/2018 12:47 PM, Daniel Vetter wrote: > > On Thu, Mar 29, 2018 at 04:19:31PM +0300, Oleksandr Andrushchenko wrote: > > > From: Oleksandr Andrushchenko > > > +static int to_refs_grant_foreign_access(struct

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

2018-04-06 Thread Oleksandr Andrushchenko
On 04/03/2018 12:47 PM, Daniel Vetter wrote: On Thu, Mar 29, 2018 at 04:19:31PM +0300, Oleksandr Andrushchenko wrote: From: Oleksandr Andrushchenko +static int to_refs_grant_foreign_access(struct xen_gem_object *xen_obj) +{ + grant_ref_t priv_gref_head;

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

2018-04-06 Thread Oleksandr Andrushchenko
On 04/03/2018 12:47 PM, Daniel Vetter wrote: On Thu, Mar 29, 2018 at 04:19:31PM +0300, Oleksandr Andrushchenko wrote: From: Oleksandr Andrushchenko +static int to_refs_grant_foreign_access(struct xen_gem_object *xen_obj) +{ + grant_ref_t priv_gref_head; + int ret, j, cur_ref,

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

2018-04-03 Thread Daniel Vetter
On Thu, Mar 29, 2018 at 04:19:31PM +0300, Oleksandr Andrushchenko wrote: > From: Oleksandr Andrushchenko > +static int to_refs_grant_foreign_access(struct xen_gem_object *xen_obj) > +{ > + grant_ref_t priv_gref_head; > + int ret, j, cur_ref, num_pages; >

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

2018-04-03 Thread Daniel Vetter
On Thu, Mar 29, 2018 at 04:19:31PM +0300, Oleksandr Andrushchenko wrote: > From: Oleksandr Andrushchenko > +static int to_refs_grant_foreign_access(struct xen_gem_object *xen_obj) > +{ > + grant_ref_t priv_gref_head; > + int ret, j, cur_ref, num_pages; > + struct sg_page_iter sg_iter;

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

2018-03-29 Thread Oleksandr Andrushchenko
From: Oleksandr Andrushchenko Introduce Xen zero-copy helper DRM driver, add user-space API of the driver: 1. DRM_IOCTL_XEN_ZCOPY_DUMB_FROM_REFS This will create a DRM dumb buffer from grant references provided by the frontend. The intended usage is: -

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

2018-03-29 Thread Oleksandr Andrushchenko
From: Oleksandr Andrushchenko Introduce Xen zero-copy helper DRM driver, add user-space API of the driver: 1. DRM_IOCTL_XEN_ZCOPY_DUMB_FROM_REFS This will create a DRM dumb buffer from grant references provided by the frontend. The intended usage is: - Frontend - creates a dumb/display