On 09/14/2018 03:00 PM, Gerd Hoffmann wrote:
On Fri, Sep 14, 2018 at 02:00:30PM +0200, Tomeu Vizoso wrote:
On 09/14/2018 08:37 AM, Gerd Hoffmann wrote:
Hi,
Well, no. This is *not* about 3D, it's about software rendering, for
example cairo doing its work for gtk apps. So the workflow wou
On Fri, Sep 14, 2018 at 02:00:30PM +0200, Tomeu Vizoso wrote:
> On 09/14/2018 08:37 AM, Gerd Hoffmann wrote:
> >Hi,
> >
> > > > Well, no. This is *not* about 3D, it's about software rendering, for
> > > > example cairo doing its work for gtk apps. So the workflow would be
> > > > along these
On 09/14/2018 08:37 AM, Gerd Hoffmann wrote:
Hi,
Well, no. This is *not* about 3D, it's about software rendering, for
example cairo doing its work for gtk apps. So the workflow would be
along these lines:
(1) guest app allocates dumb drm buffer from virtio-gpu, renders to it.
Why not le
Hi,
> > Well, no. This is *not* about 3D, it's about software rendering, for
> > example cairo doing its work for gtk apps. So the workflow would be
> > along these lines:
> >
> > (1) guest app allocates dumb drm buffer from virtio-gpu, renders to it.
> > (2) guest app passes the buffer to way
On Wed, Sep 12, 2018 at 11:44 PM Gerd Hoffmann wrote:
>
> On Wed, Sep 12, 2018 at 08:24:00PM -0700, Gurchetan Singh wrote:
> > On Wed, Sep 12, 2018 at 12:03 AM Yann Droneaud wrote:
> > >
> > > Hi,
> > >
> > > Le lundi 27 août 2018 à 11:34 +0200, Gerd Hoffmann a écrit :
> > > > A driver to let use
On Wed, Sep 12, 2018 at 08:24:00PM -0700, Gurchetan Singh wrote:
> On Wed, Sep 12, 2018 at 12:03 AM Yann Droneaud wrote:
> >
> > Hi,
> >
> > Le lundi 27 août 2018 à 11:34 +0200, Gerd Hoffmann a écrit :
> > > A driver to let userspace turn memfd regions into dma-bufs.
> > >
> > > Use case: Allows
On Wed, Sep 12, 2018 at 12:03 AM Yann Droneaud wrote:
>
> Hi,
>
> Le lundi 27 août 2018 à 11:34 +0200, Gerd Hoffmann a écrit :
> > A driver to let userspace turn memfd regions into dma-bufs.
> >
> > Use case: Allows qemu create dmabufs for the vga framebuffer or
> > virtio-gpu ressources. Then t
Hi,
Le lundi 27 août 2018 à 11:34 +0200, Gerd Hoffmann a écrit :
> A driver to let userspace turn memfd regions into dma-bufs.
>
> Use case: Allows qemu create dmabufs for the vga framebuffer or
> virtio-gpu ressources. Then they can be passed around to display
> those guest things on the host.
> > >> +if (WARN_ON(vmf->pgoff >= ubuf->pagecount))
> > >> +return VM_FAULT_SIGBUS;
> > >
> > > Just curious, when do you expect this to happen ?
> >
> > It should not. If it actually happens it would be a bug somewhere,
> > thats why the WARN_ON.
>
> But you seem to con
On Tue, Sep 11, 2018 at 11:50 AM, Laurent Pinchart
wrote:
> Hi Gerd,
>
> On Tuesday, 11 September 2018 09:50:14 EEST Gerd Hoffmann wrote:
>> Hi,
>>
>> >> +#define UDMABUF_CREATE _IOW('u', 0x42, struct udmabuf_create)
>> >
>> > Why do you start at 0x42 if you reserve the 0x40-0x4f range ?
>
Hi Gerd,
On Tuesday, 11 September 2018 09:50:14 EEST Gerd Hoffmann wrote:
> Hi,
>
> >> +#define UDMABUF_CREATE _IOW('u', 0x42, struct udmabuf_create)
> >
> > Why do you start at 0x42 if you reserve the 0x40-0x4f range ?
>
> No particular strong reason, just that using 42 was less boring
Hi,
> > +#define UDMABUF_CREATE _IOW('u', 0x42, struct udmabuf_create)
>
> Why do you start at 0x42 if you reserve the 0x40-0x4f range ?
No particular strong reason, just that using 42 was less boring than
starting with 0x40.
> > +#define UDMABUF_CREATE_LIST _IOW('u', 0x43, struct udma
Hi Gerd,
Thank you for the patch.
CC'ing the linux-api mailing list as this creates a new userspace API.
On Monday, 27 August 2018 12:34:44 EEST Gerd Hoffmann wrote:
> A driver to let userspace turn memfd regions into dma-bufs.
>
> Use case: Allows qemu create dmabufs for the vga framebuffer o
On Mon, Aug 27, 2018 at 11:34:44AM +0200, Gerd Hoffmann wrote:
> A driver to let userspace turn memfd regions into dma-bufs.
>
> Use case: Allows qemu create dmabufs for the vga framebuffer or
> virtio-gpu ressources. Then they can be passed around to display
> those guest things on the host. T
A driver to let userspace turn memfd regions into dma-bufs.
Use case: Allows qemu create dmabufs for the vga framebuffer or
virtio-gpu ressources. Then they can be passed around to display
those guest things on the host. To spice client for classic full
framebuffer display, and hopefully some d
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