[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [Notes for xen summit 2018 design session] Graphic virtualization
On Thu, 2 Aug 2018, Artem Mygaiev wrote: > On 02.08.18 18:57, Julien Grall wrote: > > Hi Artem, > > > > On 02/08/18 16:54, Artem Mygaiev wrote: > > > On 02.08.18 18:29, Lars Kurth wrote: > > > > > > > > > > > > On 02/08/2018, 16:27, "Artem Mygaiev" <artem_mygaiev@xxxxxxxx> 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. > > They do compare with Dom0 (slides 20 and onwards). Dom0 has the direct > > access to the GPU, so this is very similar to native. > > > > Did you expect other comparison? > > Yes, implementation of sharing may impact Dom0 performance. In this case it > seems that native GL applications in Dom0 are also reside in SVDM somehow > (slide 14). I am not saying it is necessary impacting, but it is always better > to have non-virtualized environment as a reference. > > Too bad I couldn't make it to XDS due to conflict with AGL/OSS events :( I took his business card, I'll try to make introductions. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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