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Re: [Xen-users] Xen PV display drivers
Hello Oleksandr,
>>We run Weston full-screen, cannot understand what exactly the problem? Is it possible for the guest to render natively on a display ? If yes, is it possible for a display to be switched between the guests, dynamically ?
Thanks, Rajagopal
On 11/13/19 7:07 PM, Rajagopal Aravindan wrote:
> Hello Oleksandr,
>
Hi,
> >>This should be all you need
>
> Is it possible to render a Xen guest's GUI directly on a display,
> without PCI pass-through ?
PCI pass-through is not needed for PV display to work
> When I say directly, I mean in full-screen, just like how native OS's
> GUI is rendered.
We run Weston full-screen, cannot understand what exactly the problem?
>
> Any pointers will be helpful.
>
> Looking forward to your reply.
>
> Thanks,
> Rajagopal
>
>
>
> On Thu, Oct 17, 2019 at 2:04 PM Oleksandr Andrushchenko
> <andr2000@xxxxxxxxx <mailto:andr2000@xxxxxxxxx>> wrote:
>
> Hi, sorry for late reply
>
> On 10/17/19 11:27 AM, Rajagopal Aravindan wrote:
> > Hello Oleksandr,
> >
> > >>We do not use framebuffer drivers in our setups, but PV display
> > (Linux KMS).
> > >>Please let me know if you need details on that.
> > Yes, could you please share some details, to consolidate whatever
> > little study we have carried out so far ?
> >
> In order to run Xen PV display you need:
> 1. PV display front kernel driver [1]
> 2. PV display backend - user-space backend which runs either as
> a Weston client or can run as DRM KMS client.
> 3. Configure your domain, for examples please see [3] and of
> course [4]
>
> This should be all you need
> > Look forward to your reply.
> >
> > Thanks,
> > Rajagopal
> Thank you,
> Oleksandr
> >
> > On Fri, Sep 6, 2019 at 10:58 AM Oleksandr Andrushchenko
> > <Oleksandr_Andrushchenko@xxxxxxxx
> <mailto:Oleksandr_Andrushchenko@xxxxxxxx>
> > <mailto:Oleksandr_Andrushchenko@xxxxxxxx
> <mailto:Oleksandr_Andrushchenko@xxxxxxxx>>> wrote:
> >
> > Hi,
> > On 9/5/19 9:47 PM, Julien Grall wrote:
> > > Hi,
> > >
> > > I am adding Oleksandr who has been looking after PV
> display driver
> > > recently.
> > >
> > We do not use framebuffer drivers in our setups, but PV display
> > (Linux KMS).
> > Please let me know if you need details on that.
> >
> > > Cheers,
> > >
> > > On 8/28/19 6:49 PM, Rajagopal Aravindan wrote:
> > >> Hello Julien,
> > >>
> > >> I am trying to understand how a Dom-U's GUI desktop is
> viewable
> > >> through vncviewer.
> > >> While I see a fbfront driver in Ubuntu running as Dom-U, I
> > don't see
> > >> a fbback driver or equivalent.
> > >>
> > fbfront is a kernel driver and its counterpart (fbback) is a
> part of
> > QEMU [1]
> >
> > >> Can you please provide me some info or links on this ?
> > OFFTOP: I am not subscribed on xen-users@, so I miss all the
> mails
> > there
> > >>
> > >> Thanks,
> > >> Rajagopal
> > >
> > [1]
> >
> https://xenbits.xen.org/gitweb/?p=qemu-xen.git;a=blob;f=hw/display/xenfb.c;h=3c79913b31a67d162299f598002133881e064c87;hb=HEAD
> <https://urldefense.com/v3/__https://xenbits.xen.org/gitweb/?p=qemu-xen.git;a=blob;f=hw*display*xenfb.c;h=3c79913b31a67d162299f598002133881e064c87;hb=HEAD__;Ly8!K6dmGCEab4ueJg!j9cYW5SDDMpbQgDU4fEoDSV6yFKY_aAAgigiDgIXgR2EDwZV9aWLE4YrzkEfpgnqcI3mhmjNEQ$>
> >
> [1]
> https://elixir.bootlin.com/linux/v5.4-rc2/source/drivers/gpu/drm/xen
> <https://urldefense.com/v3/__https://elixir.bootlin.com/linux/v5.4-rc2/source/drivers/gpu/drm/xen__;!K6dmGCEab4ueJg!j9cYW5SDDMpbQgDU4fEoDSV6yFKY_aAAgigiDgIXgR2EDwZV9aWLE4YrzkEfpgnqcI0GxlIzyA$>
> [2] https://github.com/xen-troops/displ_be
> <https://urldefense.com/v3/__https://github.com/xen-troops/displ_be__;!K6dmGCEab4ueJg!j9cYW5SDDMpbQgDU4fEoDSV6yFKY_aAAgigiDgIXgR2EDwZV9aWLE4YrzkEfpgnqcI3DuTe6xg$>
> [3]
> https://github.com/xen-troops/meta-xt-prod-gen3-test/tree/master/recipes-dom0/dom0-image-thin-initramfs/files/meta-xt-prod-extra/recipes-extended/guest-addons/files
> <https://urldefense.com/v3/__https://github.com/xen-troops/meta-xt-prod-gen3-test/tree/master/recipes-dom0/dom0-image-thin-initramfs/files/meta-xt-prod-extra/recipes-extended/guest-addons/files__;!K6dmGCEab4ueJg!j9cYW5SDDMpbQgDU4fEoDSV6yFKY_aAAgigiDgIXgR2EDwZV9aWLE4YrzkEfpgnqcI2yhP65ug$>
> [4] https://xenbits.xen.org/docs/unstable/man/xl.cfg.5.html
> <https://urldefense.com/v3/__https://xenbits.xen.org/docs/unstable/man/xl.cfg.5.html__;!K6dmGCEab4ueJg!j9cYW5SDDMpbQgDU4fEoDSV6yFKY_aAAgigiDgIXgR2EDwZV9aWLE4YrzkEfpgnqcI00wih9yw$>
>
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