Re: [Xen-users] not enough resources

[Gordan Bobic <gordan@xxxxxxxxxx>]

The only time I have seen the GPU not initialize due to
"not enough resources" in device manager, it was fixed
by disabling the emulated VGA device in device manager.

I have two passthrough VMs, passing a modified 780Ti
to each, and they work fine. I never tried passing
more than one GPU to a single VM.

Gordan

On 2014-06-30 18:48, jacek burghardt wrote:
> Was anyone able to pass two video cards ? I installed 14.2 amd drivers
> and wolfenstein plays good on my HD 6450. I just ordered R7 270 for 80
> andÂ
>
>  On Sat, Jun 28, 2014 at 3:46 PM, jacek burghardt
> <jaceksburghardt@xxxxxxxxx> wrote:
>
> > no go for me ÂI bet there is need for more patching may be the
> > address issue of vga card missing,
> >
> > On Sat, Jun 28, 2014 at 2:16 PM, Matthias
> > <matthias.kannenberg@xxxxxxxxxxxxxx> wrote:
> >
> > Can you post your domU config?
> >
> > I tried several things but couldn't get my domU running with vga
> > passthrough on upstream qemu. without vnc or splice, the domU is not
> > created, as you noted, but with splice, i got the same error
> > message. the only way i could get it running was with vnc, but in
> > this case and with vga=none the domU would not even get to the boot
> > screen and would sit idling at 2,5% cpu in xl top while my first cpu
> > core (exclussivly for dom0) will go to 100% constant in htop. with
> > vnc and stvga, i would get past the boot screen but would get the
> > same behaviour 2 seconds into the boot process.
> >
> > So I am wondering if you do something else differently then I do
> > (like viridian, pci_power_management, pci_permissive,
> > xen_platform_pci etc).
> >
> > 2014-06-28 16:21 GMT+02:00 jacek burghardt
> > <jaceksburghardt@xxxxxxxxx>:
> >
> > Well it is strange that it still needs vnc or spice to start. I had
> > disable both and xl failed to start new instance of hvm
> >
> > On Sat, Jun 28, 2014 at 7:18 AM, Matthias
> > <matthias.kannenberg@xxxxxxxxxxxxxx> wrote:
> >
> > This is great to hear because this abbility is in fact already
> > there:
> http://xenbits.xen.org/gitweb/?p=xen.git;a=commitdiff;h=2e5738ff47b9d2e1948024100f87b1a25fcf004a
> > [1]
> >
> > Thanks for the info. Will do some test runs later. :)
> >
> > 2014-06-28 15:12 GMT+02:00 jacek burghardt
> > <jaceksburghardt@xxxxxxxxx>:
> >
> > Well i just pass my 6450 to 8.1 as a secondary video card and i can
> > reboot without having to reject the card first.Â
> > kvm just tells qemu to turnoff vga with vga=0 I think that a simple
> > solutions would be to add ability to pass vga=0 to qemu.
> >
> > On Sat, Jun 28, 2014 at 1:49 AM, Matthias
> > <matthias.kannenberg@xxxxxxxxxxxxxx> wrote:
> >
> > No, qemu traditional does not support spice.. this was something
> > introduced to qemu upstream.
> >
> > But great to heare that both this now works for you and that the
> > 4GB bug is finally fixed in xen unstable!
> >
> > Would you mind sharing your domU config? I never got primary
> > passthrough running with qemu upstream and had to always fall back
> > to qemu-traditional. Iirc, you were one of the guys who used nvidia
> > cards with the extra patches, weren't you? Can you successfully
> > reboot your domU without rebooting the dom0 (basically my last big
> > issue with vga passthrough with AMD).
> >
> > Thanks
> >
> > 2014-06-28 7:57 GMT+02:00 jacek burghardt
> > <jaceksburghardt@xxxxxxxxx>:
> >
> > I added more memory and I was abel to get 8gb of ramÂ
> >
> > On Fri, Jun 27, 2014 at 5:35 PM, jacek burghardt
> > <jaceksburghardt@xxxxxxxxx> wrote:
> >
> > I just compiled xen-git 4.5 and it works.Â
> >
> > On Fri, Jun 27, 2014 at 1:51 PM, jacek burghardt
> > <jaceksburghardt@xxxxxxxxx> wrote:
> >
> > I run xen 4.4 on arch linux with qemu upstream. I tried to use
> > qemu-traditional with direct passing of video card but it sits at 0
> > log show something about no cpu. I guess qemu traditional does not
> > support spice ?Â
> >
> > On Fri, Jun 27, 2014 at 1:14 PM, Austin S Hemmelgarn
> > <ahferroin7@xxxxxxxxx> wrote:
> >
> > On 2014-06-27 14:21, jacek burghardt wrote:
> > > Well I can bootup with 3.5GB
> > >
> > >
> > > On Fri, Jun 27, 2014 at 11:11 AM, Austin S Hemmelgarn
> > > <ahferroin7@xxxxxxxxx <mailto:ahferroin7@xxxxxxxxx>> wrote:
> > >
> > > Â Â On 2014-06-27 12:43, jacek burghardt wrote:
> > > Â Â > So my xen desktop has only 8gb of ram. I had assigned 2gb
> > of ram
> > > Â Â to dom0
> > > Â Â > and 3gb to win8 with assigned 6450. I was trying to
> > assign 4GB of ram
> > > Â Â > and then HD 6450 has an error with 4gb not enough
> > resource. with 3gb
> > > Â Â > everything works great.
> > > Â Â > Is this bug in xen or I need more ram?
> > > Â Â >
> > > Â Â >
> > > Â Â > _______________________________________________
> > > Â Â > Xen-users mailing list
> > > Â Â > Xen-users@xxxxxxxxxxxxx <mailto:Xen-users@xxxxxxxxxxxxx>
> > > Â Â > http://lists.xen.org/xen-users [2]
> > > Â Â >
> > > Â Â It's probably an issue with how Windows lays out it's
> > memory.
> > >
> > The only reason I'm thinking it's a issue in Windows is because 4GB
> > is
> > the per-process (and per-driver, and also on the really basic
> > versions,
> > system) memory limit, and there are known issues with some drivers
> > when
> > you approach this limit. ÂMy guess is that there is some amount of
> > memory that the driver is mapping from the card, and it is also
> > trying
> > to map space equal to the physical RAM size for the CPU, which in
> > turn
> > adds up to more than 4G.
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