[Bug 90254] [BDW]Igt/gem_pwrite subcase huge-gtt causes Call trace

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90254

--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
The test checks that the object fits into ram (run with --debug to verify that
the size is indeed valid). It is probable that the huge-cpu would also fail
given enough time to allocate the full object. But it's the spurious oom that
kills us:

[  100.627668] 0 pages in swap cache
[  100.627670] Swap cache stats: add 550, delete 550, find 0/0
[  100.627671] Free swap  = 1950564kB
[  100.627673] Total swap = 1952764kB
[  100.627674] 1028502 pages RAM

Why are we not pushing others out to swap in get_pages_gtt()?

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