[Bug 66726] [PNV Regression]*ERROR* conflict detected with stolen region: [0x7f800000 - 0x80000000]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66726

--- Comment #4 from Daniel Vetter <daniel at ffwll.ch> ---
(In reply to comment #3)
> In this case, the memory region should be reserved I think by
> 
> [    0.766505] pci_bus 0000:00: root bus resource [mem 0x7f700000-0xffffffff]
> 
> So it is a genuine busy, and we should try and filter this warning. Or
> somehow make a child resource of it.

The following explicit resources are in that range:

  7f700000-7f8fffff : PCI Bus 0000:01
  7f900000-7f900fff : Intel Flush Page
  7f904000-7f907fff : i915 MCHBAR

That feels like a real conflict, or alternatively our flush page setup in
intel-gtt.c is totally bogus. I'll attach the patch to rework the stolen
detection to check this.

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