Re: Xen 4.6 Development Update (three months reminder)

[Jim Fehlig <jfehlig@suse.com>]

Fabio Fantoni wrote:
> 2015-04-30 18:55 GMT+02:00 Jim Fehlig <jfehlig@suse.com
> <mailto:jfehlig@suse.com>>:
>
>     Fabio Fantoni wrote:
>     > Il 29/04/2015 18:39, Jim Fehlig ha scritto:
>
>     linux-tyb8:~/ # dmesg | grep -i qxl
>     [    4.901158] [drm] qxl: 16M of VRAM memory size
>     [    4.901159] [drm] qxl: 63M of IO pages memory ready (VRAM domain)
>     [    4.951545] fb: switching to qxldrmfb from VESA VGA
>     [    4.951702] fbcon: qxldrmfb (fb0) is primary device
>     [    4.976292] qxl 0000:00:04.0: fb0: qxldrmfb frame buffer device
>     [    4.976293] qxl 0000:00:04.0: registered panic notifier
>     [    4.976296] [drm] Initialized qxl 0.1.0 20120117 for
>     0000:00:04.0 on
>     minor 0
>     linux-tyb8:~/ # hwinfo --gfxcard
>     16: PCI 04.0: 0300 VGA compatible controller (VGA)
>       [Created at pci.328]
>       Unique ID: 8otl.q8E9rb_JDj6
>       SysFS ID: /devices/pci0000:00/0000:00:04.0
>       SysFS BusID: 0000:00:04.0
>       Hardware Class: graphics card
>       Model: "Red Hat VGA compatible controller"
>       Vendor: pci 0x1b36 "Red Hat, Inc."
>       Device: pci 0x0100
>       SubVendor: pci 0x1af4 "Red Hat, Inc"
>       SubDevice: pci 0x1100
>       Revision: 0x04
>       Driver: "qxl"
>       Driver Modules: "drm"
>       Memory Range: 0xf0000000-0xf3ffffff (rw,non-prefetchable)
>       Memory Range: 0xf4000000-0xf7ffffff (rw,non-prefetchable)
>       Memory Range: 0xf9050000-0xf9051fff (rw,non-prefetchable)
>       I/O Ports: 0xc240-0xc25f (rw)
>       Memory Range: 0xf9040000-0xf904ffff (ro,non-prefetchable,disabled)
>       IRQ: 32 (150 events)
>       I/O Ports: 0x3c0-0x3df (rw)
>       Module Alias:
>     "pci:v00001B36d00000100sv00001AF4sd00001100bc03sc00i00"
>       Driver Info #0:
>         Driver Status: qxl is active
>         Driver Activation Cmd: "modprobe qxl"
>       Config Status: cfg=new, avail=yes, need=no, active=unknown
>     Primary display adapter: #16
>
>     > With driver installed should always fails with error similar a what I
>     > reported FWIK. I mean this:
>     > http://lists.xen.org/archives/html/xen-devel/2015-04/txtGtntonxpzb.txt
>     > http://lists.xen.org/archives/html/xen-devel/2015-04/msg03064.html
>
>     I'm not seeing that.
>
>     > Or you have domU with qxl driver installed, used and working? In this
>     > case we must find solution or workaround present in SLES12 and apply
>     > it also upstream if missed.
>
>     The base system is SLES12, but Xen and the tools (including qemu) are
>     fairly recent xen-unstable.  So the only thing SLES12 specific
>     would be
>     domU kernel and qxl driver.
>
>
> Thanks for your reply.
> As you told the more probable fix/workaround can be in dom0's kernel
> and/or domU's kernel or qxl driver.
> I tried to search about qxl suse package 0.1.0 repository (saw version
> in your message) but I not understand exactly what repository see.

Jan, or perhaps Olaf or Juergen, might know of a SLES12 kernel change
that allows qxl to work.

> About kernel I found this for patches added in suse:
> https://github.com/openSUSE/kernel-source/tree/SLE12-SP1
> Is it correct? With a fast look I not found patches related FWIK (but
> I had low knowledge)
> Next week probably I'll try to restrict the search field trying suse
> domU in same dom0 I used (wheezy with kernel from backports and other
> packages update manually), I can try latest opensuse or is better try
> a SLED12 trial instead?
>
> About xen I take a look here:
> https://build.opensuse.org/package/show/Virtualization/xen
> I found one patch probably related:
> https://build.opensuse.org/package/view_file/Virtualization/xen/stdvga-cache.patch?expand=1
> you used it in your test?

No.

>
> I saw also that there is a patch anymore needed:
> https://build.opensuse.org/package/view_file/Virtualization/xen/qemu-xen-enable-spice-support.patch?expand=1

Yes, agreed...

> Since this:
> http://xenbits.xen.org/gitweb/?p=xen.git;a=commit;h=9aa2cef51f3dced396a5ae10de586206956f9ffd
> is possible to use configure instead: ./configure
> --with-extra-qemuu-configure-args="--enable-spice --enable-usb-redir"

...for Xen releases containing this commit.

Regards,
Jim