Hi Lars
On 02.08.18 18:29, Lars Kurth wrote:
On 02/08/2018, 16:27, "Artem Mygaiev" <artem_myga...@epam.com> wrote:
Hello Julien
On 02.08.18 12:56, Julien Grall wrote:
> Hi,
>
> Sorry for the late posting. The notes were taken by Stefano Stabellini.
> Thank you.
>
> This has some clarifications requested from EPAM regarding PowerVR.
>
> The existing graphics solutions on Xen today are:
> - PV DRM:
> * Supports multiple displays per VM
> * Based on Grant-tables.
> * Improvement of Xen FB which is based on foreign mapping
>
Frontend driver will be part of LK starting 4.18
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/gpu/drm/xen?h=v4.18-rc7
> - Intel GVT: https://01.org/igvt-g
> * Based on IOREQ server infrastructure
> * Performance is 70% of direct assigned hardware
>
> - NVIDIA:
> * Much more virtualizable
> * Provide mappable chunk of PCI BARs.
> * Userspace component emulates PCI config space
>
> Current effort for graphic virtualization on Arm:
> - Samsung: They have a PV OpenGL solution. This seems to be fast.
This is interesting. Do you know if there is any open benchmark data?
The presentation and recording is at
https://www.slideshare.net/xen_com_mgr/design-and-implementation-of-automotive-xpdds18-virtualization-based-on-xen-sungmin-lee-samsung-electronics
https://www.youtube.com/watch?v=mBD8o9X32fA&index=14&list=PLYyw7IQjL-zFlQYbY9BgsLhxqp1Ui67W7
Thanks for pointing to XDS materials. Unfortunately, there is no
comparison with "native" GPU performance (non-virtualized)... I guess I
need to ask Samsung folks for details.
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