[Bug 90537] radeonsi bo/va conflict on RADEON_GEM_VA (rscreen->ws->buffer_from_handle returns NULL)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90537

--- Comment #2 from Michel Dänzer <michel at daenzer.net> ---
Created attachment 115936
  --> https://bugs.freedesktop.org/attachment.cgi?id=115936&action=edit
winsys/radeon: Unmap VA when destroying BO

I think this is most likely because we're not unmapping the virtual address
range when closing a GEM handle.

Does this Mesa patch help? Note that you'll also need the kernel fixes in
4.0.3, or this patch will likely cause kernel hangs.

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