[Bug 87726] [BDW Bisected] OglDrvCtx performance reduced by ~30% after use true PPGTT in Gen8+

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87726

--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
It's expected, atm. Deferred pagetable allocation should improve matters,
hopefully to the point where the VM creation overhead is negligible.

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