drm/i915/gtt: Allocate va range only if vma is not bound

When we have bound vma into an address space, the layout
of page table structures is immutable. So we can be absolutely
certain that if vma is already bound, there is no need to
(re)allocate a virtual address range for it.

v2: - add sanity checks and remove superfluous GLOBAL_BIND set
    - we might do update for an unbound vma (Chris)

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=90224
Testcase: igt/gem_exec_big #bdw
Reported-by: Chris Wilson <[email protected]>
Cc: Chris Wilson <[email protected]>
Cc: Michel Thierry <[email protected]>
Cc: Daniel Vetter <[email protected]>
Signed-off-by: Mika Kuoppala <[email protected]>
Reviewed-by: Chris Wilson <[email protected]>
Signed-off-by: Jani Nikula <[email protected]>

0 files changed, 0 insertions, 0 deletions