Il 19/05/2014 08:44, Gerd Hoffmann ha scritto:
Hi,
+ /*
+ * Some video bioses and gfx drivers will assume the bdf of IGD is 00:02.0.
+ * So user need to set it to 00:02.0 in Xen configure file explicitly,
+ * otherwise IGD will fail to work.
+ */
+ pci_reserve_pci_devfn(b, PCI_DEVFN(2, 0));
That is asking for trouble. Slot 2 is used by the qemu vga cards by
default, and for quite a while (before memory api was merged) it even
was impossible to change it. libvirt still places the vga card at slot
2 for that reason -> boom. I wouldn't be surprised if you find that
assumption in other management libs / apps too.
Why do you need that patch in the first place? It should be possible to
configure qemu to not occupy slot 2 if you need it that way. Just pass
'-vga none' to qemu. Which you probably want anyway if you pass-through
a vga to the guest. And explicitly configure a slot (via addr=
property) for all your pci devices. Doing it only for the IGD works too
if you list the device before any other pci device on the qemu command
line.
cheers,
Gerd
I already added vga none support on libxl, useful also for this cases:
http://xenbits.xen.org/gitweb/?p=xen.git;a=commit;h=2e5738ff47b9d2e1948024100f87b1a25fcf004a
This patch is already tested and working, for now I not tested and I
can't test with intel gpu passthrough, someone can test it with intel
gpu passthrough?
Thanks for any reply and sorry for my bad english.
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