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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] Xen PV display drivers
On 11/15/19 5:13 AM, Rajagopal Aravindan wrote: Hello Oleksandr, >>BTW, just out of curiosity, what are you trying to achieve?We would like to share a single display among multiple guests, with ONLY 1 guest's GUI visible at any time. Dynamically, the user should be able to switch to any guest's GUI, through some gesture or special key stroke.Please let me know in case I am NOT clear. Well, this is all doable and the most work is NOT on Xen/PV display side:1. If you use PV display backend + Weston then every guest is a Weston client window2. From #1 - control Weston to show only 1 guest at a time, I guess you would need to write some SW to do that From the above, there is nothing left on Xen side Thanks, Rajagopal ------------------------------------------------------------------------*From:* Xen-users <xen-users-bounces@xxxxxxxxxxxxxxxxxxxx> on behalf of Oleksandr Andrushchenko <andr2000@xxxxxxxxx>*Sent:* Thursday, November 14, 2019 11:57 PM*To:* Rajagopal Aravindan <a.rajagopal.81@xxxxxxxxx>; Oleksandr Andrushchenko <Oleksandr_Andrushchenko@xxxxxxxx> *Cc:* Julien Grall <julien.grall@xxxxxxx>; xen-users@xxxxxxxxxxxxxxxxxxxx <xen-users@xxxxxxxxxxxxxxxxxxxx>*Subject:* Re: [Xen-users] Xen PV display drivers On 11/14/19 20:14, Rajagopal Aravindan wrote: > 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 you mean without passing through a display? I guess no, we are talking about para-virtual display > If yes, is it possible for a display to be switched between the > guests, dynamically ? In our setup we have Weston + display backend, so all guests are Weston clients internally (display backend creates a new Weston client for each guest). Thus, every client is just a Weston window, so you can switch as you wish BTW, just out of curiosity, what are you trying to achieve? > > Thanks, > Rajagopal Thank you, Oleksandr > > On Thu, Nov 14, 2019 at 12:25 PM Oleksandr Andrushchenko > <Oleksandr_Andrushchenko@xxxxxxxx > <mailto:Oleksandr_Andrushchenko@xxxxxxxx>> wrote: > > > 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> > <mailto: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>> > > > <mailto: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://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$>> > > _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-usersDisclaimer: "This message is intended only for the designated recipient(s). 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