[Bug 99948] [BDW] igt_ppgtt_shrink, OOPS gen8_ppgtt_insert_4lvl

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99948

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #6 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 9e89f9ee3b16cca56bed5fa45e63f422d3ac2c3a
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Sat Feb 25 18:11:22 2017 +0000

    drm/i915: Advance start address on crossing PML (48b ppgtt) boundary

    When advancing onto the next 4th level page table entry, we need to
    reset our indices to 0. Currently we restart from the original address
    which means we start with an offset into the next PML table.

    Fixes: 894ccebee2b0 ("drm/i915: Micro-optimise
gen8_ppgtt_insert_entries()")
    Reported-by: Matthew Auld <matthew.william.auld at gmail.com>
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99948
    Testcase: igt/drv_selftest/live_gtt
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Matthew Auld <matthew.william.auld at gmail.com>
    Tested-by: Matthew Auld <matthew.william.auld at gmail.com>
    Reviewed-by: Matthew Auld <matthew.william.auld at gmail.com>
    Link:
http://patchwork.freedesktop.org/patch/msgid/20170225181122.4788-4-chris@chris-wilson.co.uk

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